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Singh AK, Mahto SK, Sinha R, Alibakhshikenari M, Al-Gburi AJA, Ahmad A, Kouhalvandi L, Virdee BS, Dalarsson M. Low-Loss Paper-Substrate Triple-Band-Frequency Reconfigurable Microstrip Antenna for Sub-7 GHz Applications. Sensors (Basel) 2023; 23:8996. [PMID: 37960695 PMCID: PMC10648291 DOI: 10.3390/s23218996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/31/2023] [Accepted: 11/01/2023] [Indexed: 11/15/2023]
Abstract
In this paper, a low-cost resin-coated commercial-photo-paper substrate is used to design a printed reconfigurable multiband antenna. The two PIN diodes are used mainly to redistribute the surface current that provides reconfigurable properties to the proposed antenna. The antenna size of 40 mm × 40 mm × 0.44 mm with a partial ground, covers wireless and mobile bands ranging from 1.91 GHz to 6.75 GHz. The parametric analysis is performed to achieve optimized design parameters of the antenna. The U-shaped and C-shaped emitters are meant to function at 2.4 GHz and 5.9 GHz, respectively, while the primary emitter is designed to operate at 3.5 GHz. The proposed antenna achieved peak gain and radiation efficiency of 3.4 dBi and 90%, respectively. Simulated and measured results of the reflection coefficient, radiation pattern, gain, and efficiency show that the antenna design is in favorable agreement. Since the proposed antenna achieved wideband (1.91-6.75 GHz) using PIN diode configuration, using this technique the need for numerous electronic components to provide multiband frequency is avoided.
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Affiliation(s)
- Ajit Kumar Singh
- Indian Institute of Information Technology, Ranchi 834010, India
| | | | - Rashmi Sinha
- National Institute of Technology, Jamshedpur 831014, India
| | - Mohammad Alibakhshikenari
- Department of Signal Theory and Communications, Universidad Carlos III de Madrid, 28911 Leganés, Madrid, Spain
| | - Ahmed Jamal Abdullah Al-Gburi
- Center for Telecommunication Research & Innovation (CeTRI), Fakulti Teknologi dan Kejuruteraan Elektronik dan Komputer (FTKEK), Universiti Teknikal Malaysia Melaka (UTeM), Ayer Keroh 75450, Malaysia
| | - Ashfaq Ahmad
- Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Lida Kouhalvandi
- Department of Electrical and Electronics Engineering, Dogus University, Istanbul 34775, Turkey
| | - Bal S. Virdee
- Center for Communications Technology, London Metropolitan University, London N7 8DB, UK
| | - Mariana Dalarsson
- Department of Electrical Engineering, School of Electrical Engineering and Computer Science, KTH Royal Institiute of Technology, 100 44 Stockholm, Sweden
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Kaveripakam S, Chinthaginjala R, Anbazhagan R, Alibakhshikenari M, Virdee B, Khan S, Pau G, Hwang See C, Dayoub I, Livreri P, Abd‐Alhameed R. Enhancement of Precise Underwater Object Localization. Radio Science 2023; 58. [DOI: 10.1029/2023rs007782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 07/21/2023] [Indexed: 09/02/2023]
Abstract
AbstractUnderwater communication applications extensively use localization services for object identification. Because of their significant impact on ocean exploration and monitoring, underwater wireless sensor networks (UWSN) are becoming increasingly popular, and acoustic communications have largely overtaken radio frequency broadcasts as the dominant means of communication. The two localization methods that are most frequently employed are those that estimate the angle of arrival and the time difference of arrival. The military and civilian sectors rely heavily on UWSN for object identification in the underwater environment. As a result, there is a need in UWSN for an accurate localization technique that accounts for dynamic nature of the underwater environment. Time and position data are the two key parameters to accurately define the position of an object. Moreover, due to climate change there is now a need to constrain energy consumption by UWSN to limit carbon emission to meet net‐zero target by 2050. To meet these challenges, we have developed an efficient localization algorithm for determining an object position based on the angle and distance of arrival of beacon signals. We have considered the factors like sensor nodes not being in time sync with each other and the fact that the speed of sound varies in water. Our simulation results show that the proposed approach can achieve great localization accuracy while accounting for temporal synchronization inaccuracies. When compared to existing localization approaches, the mean estimation error (MEE) (MEE) and energy consumption figures, the proposed approach outperforms them. The MEEs is shown to vary between 84.2154 and 93.8275 m for four trials, 61.2256 and 92.7956 m for eight trials, and 42.6584 and 119.5228 m for 12 trials. Comparatively, the distance‐based measurements show higher accuracy than the angle‐based measurements.
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Affiliation(s)
- Sathish Kaveripakam
- School of Electronics Engineering Vellore Institute of Technology Vellore India
| | | | - Rajesh Anbazhagan
- School of Electrical and Electronics Engineering SASTRA University Thanjavur India
| | | | - Bal Virdee
- Center for Communications Technology London Metropolitan University London UK
| | - Salahuddin Khan
- College of Engineering King Saud University Riyadh Saudi Arabia
| | - Giovanni Pau
- Faculty of Engineering and Architecture Kore University of Enna Enna Italy
| | - Chan Hwang See
- School of Computing, Engineering and the Built Environment Edinburgh Napier University Edinburgh UK
| | - Iyad Dayoub
- Université Polytechnique Hauts‐de‐France Institut d’Électronique de Microélectronique et de Nanotechnologie (IEMN) CNRS UMR 8520 ISEN Centrale Lille University of Lille Valenciennes France
- INSA Hauts‐de‐France Valenciennes France
| | - Patrizia Livreri
- Department of Engineering University of Palermo Palermo Sicily Italy
| | - Raed Abd‐Alhameed
- Faculty of Engineering and Informatics University of Bradford Bradford UK
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Al-Hasan M, Alibakhshikenari M, Virdee BS, Sharma R, Iqbal A, Althuwayb AA, Falcone F. Metamaterial inspired electromagnetic bandgap filter for ultra-wide stopband screening devices of electromagnetic interference. Sci Rep 2023; 13:13347. [PMID: 37587167 PMCID: PMC10432565 DOI: 10.1038/s41598-023-40567-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 08/13/2023] [Indexed: 08/18/2023] Open
Abstract
Presented here is a reactively loaded microstrip transmission line that exhibit an ultra-wide bandgap. The reactive loading is periodically distributed along the transmission line, which is electromagnetically coupled. The reactive load consists of a circular shaped patch which is converted to a metamaterial structure by embedded on it two concentric slit-rings. The patch is connected to the ground plane with a via-hole. The resulting structure exhibits electromagnetic bandgap (EBG) properties. The size and gap between the slit-rings dictate the magnitude of the reactive loading. The structure was first theoretically modelled to gain insight of the characterizing parameters. The equivalent circuit was verified using a full-wave 3D electromagnetic (EM) solver. The measured results show the proposed EBG structure has a highly sharp 3-dB skirt and a very wide bandgap, which is substantially larger than any EBG structure reported to date. The bandgap rejection of the single EBG unit-cell is better than - 30 dB, and the five element EBG unit-cell is better than - 90 dB. The innovation can be used in various applications such as biomedical applications that are requiring sharp roll-off rates and high stopband rejection thus enabling efficient use of the EM spectrum. This can reduce guard band and thereby increase the channel capacity of wireless systems.
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Affiliation(s)
- Muath Al-Hasan
- Department of Network and Communications Engineering, Al Ain University, 64141, Al Ain, United Arab Emirates.
| | - Mohammad Alibakhshikenari
- Department of Signal Theory and Communications, Universidad Carlos III de Madrid, 28911, Leganes, Madrid, Spain.
| | - Bal S Virdee
- Center for Communications Technology, School of Computing and Digital Media, London Metropolitan University, London, N7 8DB, UK
| | - Richa Sharma
- Center for Communications Technology, School of Computing and Digital Media, London Metropolitan University, London, N7 8DB, UK
| | - Amjad Iqbal
- Department of Network and Communications Engineering, Al Ain University, 64141, Al Ain, United Arab Emirates
- Institut National de la Recherche Scientifique (INRS), Montreal, QC, H5A1K6, Canada
| | - Ayman A Althuwayb
- Department of Electrical Engineering, College of Engineering, Jouf University, 72388, Sakaka, Aljouf, Saudi Arabia
| | - Francisco Falcone
- Department of Electric, Electronic and Communication Engineering and the Institute of Smart Cities, Public University of Navarre, 31006, Pamplona, Spain.
- School of Engineering and Sciences, Tecnologico de Monterrey, 64849, Monterrey, Mexico.
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4
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Ud Din I, Alibakhshikenari M, Virdee BS, Jayanthi RKR, Ullah S, Khan S, See CH, Golunski L, Koziel S. Frequency-Selective Surface-Based MIMO Antenna Array for 5G Millimeter-Wave Applications. Sensors (Basel) 2023; 23:7009. [PMID: 37571792 PMCID: PMC10422479 DOI: 10.3390/s23157009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/29/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023]
Abstract
In this paper, a radiating element consisting of a modified circular patch is proposed for MIMO arrays for 5G millimeter-wave applications. The radiating elements in the proposed 2 × 2 MIMO antenna array are orthogonally configured relative to each other to mitigate mutual coupling that would otherwise degrade the performance of the MIMO system. The MIMO array was fabricated on Rogers RT/Duroid high-frequency substrate with a dielectric constant of 2.2, a thickness of 0.8 mm, and a loss tangent of 0.0009. The individual antenna in the array has a measured impedance bandwidth of 1.6 GHz from 27.25 to 28.85 GHz for S11 ≤ -10 dB, and the MIMO array has a gain of 7.2 dBi at 28 GHz with inter radiator isolation greater than 26 dB. The gain of the MIMO array was increased by introducing frequency-selective surface (FSS) consisting of 7 × 7 array of unit cells comprising rectangular C-shaped resonators, with one embedded inside the other with a central crisscross slotted patch. With the FSS, the gain of the MIMO array increased to 8.6 dBi at 28 GHz. The radiation from the array is directional and perpendicular to the plain of the MIMO array. Owing to the low coupling between the radiating elements in the MIMO array, its Envelope Correlation Coefficient (ECC) is less than 0.002, and its diversity gain (DG) is better than 9.99 dB in the 5G operating band centered at 28 GHz between 26.5 GHz and 29.5 GHz.
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Affiliation(s)
- Iftikhar Ud Din
- Telecommunication Engineering Department, University of Engineering and Technology, Mardan 23200, Pakistan; (I.U.D.); (S.U.)
| | - Mohammad Alibakhshikenari
- Department of Signal Theory and Communications, Universidad Carlos III de Madrid, 28911 Leganés, Madrid, Spain
| | - Bal S. Virdee
- Center for Communications Technology, London Metropolitan University, London N7 8DB, UK; (B.S.V.); (R.K.R.J.)
| | | | - Sadiq Ullah
- Telecommunication Engineering Department, University of Engineering and Technology, Mardan 23200, Pakistan; (I.U.D.); (S.U.)
| | - Salahuddin Khan
- College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia;
| | - Chan Hwang See
- School of Computing, Engineering and the Built Environment, Edinburgh Napier University, 10 Colinton Rd., Edinburgh EH10 5DT, UK;
| | - Lukasz Golunski
- Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, 80-233 Gdansk, Poland
| | - Slawomir Koziel
- Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, 80-233 Gdansk, Poland
- Engineering Optimization & Modeling Center, Reykjavik University, 101 Reykjavik, Iceland
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5
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Amar AS, Parchin NO, Alibakhshikenari M, Abd-Alhameed RA, Ghareeb MF. Low-Profile Monopole Antenna Design with Dual Notch Bands and Ultra-Wide Impedance Bandwidth. 2023 International Telecommunications Conference (ITC-Egypt) 2023. [DOI: 10.1109/itc-egypt58155.2023.10206384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
- Ahmed S.I. Amar
- Alexandria University,Air Defense College,Department of Electronics and Communication,Alexandria,Egypt
| | - Naser Ojaroudi Parchin
- Edinburgh Napier University,School of Computing, Engineering & the Built Environment,Edinburgh,UK
| | - Mohammad Alibakhshikenari
- Universidad Carlos III de Madrid,Department of Signal Theory and Communications,Leganés, Madrid,Spain,28911
| | - Raed A. Abd-Alhameed
- University of Bradford,Faculty of Engineering and Informatics,Bradford,UK,BD7 1DP
| | - M. Fathi Ghareeb
- Alexandria University,Air Defense College,Department of Electronics and Communication,Alexandria,Egypt
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6
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Ullah A, Parchin NO, Alibakhshikenari M, Abd-Alhameed RA, Amar AS, Salem AI. A Circularly-Polarized Patch Antenna Design for 3.6 GHz Applications in 5G Systems. 2023 International Telecommunications Conference (ITC-Egypt) 2023. [DOI: 10.1109/itc-egypt58155.2023.10206122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
- Atta Ullah
- University of Bradford,Faculty of Engineering and Informatics,Bradford,UK,BD7 1DP
| | - Naser Ojaroudi Parchin
- Edinburgh Napier University,School of Computing, Engineering & the Built Environment,Edinburgh,UK
| | - Mohammad Alibakhshikenari
- Universidad Carlos III de Madrid,Department of Signal Theory and Communications,Leganés,Madrid,Spain,28911
| | - Raed A. Abd-Alhameed
- University of Bradford,Faculty of Engineering and Informatics,Bradford,UK,BD7 1DP
| | - Ahmed S.I. Amar
- Alexandria University,Air Defense College,Department of Electronics and Communication,Alexandria,Egypt
| | - Ahmed Ibrahim Salem
- Alexandria University,Air Defense College,Department of Electronics and Communication,Alexandria,Egypt
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7
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Ullah R, Asif M, Shah WA, Anjam F, Ullah I, Khurshaid T, Wuttisittikulkij L, Shah S, Ali SM, Alibakhshikenari M. Speech Emotion Recognition Using Convolution Neural Networks and Multi-Head Convolutional Transformer. Sensors (Basel) 2023; 23:6212. [PMID: 37448062 DOI: 10.3390/s23136212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 05/26/2023] [Accepted: 06/04/2023] [Indexed: 07/15/2023]
Abstract
Speech emotion recognition (SER) is a challenging task in human-computer interaction (HCI) systems. One of the key challenges in speech emotion recognition is to extract the emotional features effectively from a speech utterance. Despite the promising results of recent studies, they generally do not leverage advanced fusion algorithms for the generation of effective representations of emotional features in speech utterances. To address this problem, we describe the fusion of spatial and temporal feature representations of speech emotion by parallelizing convolutional neural networks (CNNs) and a Transformer encoder for SER. We stack two parallel CNNs for spatial feature representation in parallel to a Transformer encoder for temporal feature representation, thereby simultaneously expanding the filter depth and reducing the feature map with an expressive hierarchical feature representation at a lower computational cost. We use the RAVDESS dataset to recognize eight different speech emotions. We augment and intensify the variations in the dataset to minimize model overfitting. Additive White Gaussian Noise (AWGN) is used to augment the RAVDESS dataset. With the spatial and sequential feature representations of CNNs and the Transformer, the SER model achieves 82.31% accuracy for eight emotions on a hold-out dataset. In addition, the SER system is evaluated with the IEMOCAP dataset and achieves 79.42% recognition accuracy for five emotions. Experimental results on the RAVDESS and IEMOCAP datasets show the success of the presented SER system and demonstrate an absolute performance improvement over the state-of-the-art (SOTA) models.
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Affiliation(s)
- Rizwan Ullah
- Wireless Communication Ecosystem Research Unit, Department of Electrical Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Muhammad Asif
- Department of Electrical Engineering, Main Campus, University of Science & Technology, Bannu 28100, Pakistan
| | - Wahab Ali Shah
- Department of Electrical Engineering, Namal University, Mianwali 42250, Pakistan
| | - Fakhar Anjam
- Department of Electrical Engineering, Main Campus, University of Science & Technology, Bannu 28100, Pakistan
| | - Ibrar Ullah
- Department of Electrical Engineering, Kohat Campus, University of Engineering and Technology Peshawar, Kohat 25000, Pakistan
| | - Tahir Khurshaid
- Department of Electrical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Lunchakorn Wuttisittikulkij
- Wireless Communication Ecosystem Research Unit, Department of Electrical Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Shashi Shah
- Wireless Communication Ecosystem Research Unit, Department of Electrical Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Syed Mansoor Ali
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mohammad Alibakhshikenari
- Department of Signal Theory and Communications, Universidad Carlos III de Madrid, Leganés, 28911 Madrid, Spain
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8
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Parchin NO, Alibakhshikenari M, See CH, Abd-Alhameed RA, Limiti E. Phased Array with Radiation-mode Reconfigurability for 28 GHz Cognitive Cellular Communications. 2023 Photonics & Electromagnetics Research Symposium (PIERS) 2023. [DOI: 10.1109/piers59004.2023.10221274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
- Naser Ojaroudi Parchin
- School of Engineering and the Built Environment, Edinburgh Napier University,Edinburgh,U.K
| | - Mohammad Alibakhshikenari
- Universidad Carlos III de Madrid,Department of Signal Theory and Communications,Leganés,Madrid,Spain,28911
| | - Chan Hwang See
- School of Engineering and the Built Environment, Edinburgh Napier University,Edinburgh,U.K
| | - Raed A. Abd-Alhameed
- University of Bradford,Faculty of Engineering and Informatics,Bradford,U.K.,BD7 1DP
| | - Ernesto Limiti
- University of Rome “Tor Vergata”,Electronic Engineering Department,Rome,Italy,00133
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9
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Alibakhshikenari M, Virdee BS, Elwi TA, Lubangakene ID, Jayanthi RKR, Al-Behadili AA, Hassain ZAA, Ali SM, Pau G, Livreri P, Aïssa S. Design of a Planar Sensor Based on Split-Ring Resonators for Non-Invasive Permittivity Measurement. Sensors (Basel) 2023; 23:s23115306. [PMID: 37300033 DOI: 10.3390/s23115306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/28/2023] [Accepted: 05/30/2023] [Indexed: 06/12/2023]
Abstract
The permittivity of a material is an important parameter to characterize the degree of polarization of a material and identify components and impurities. This paper presents a non-invasive measurement technique to characterize materials in terms of their permittivity based on a modified metamaterial unit-cell sensor. The sensor consists of a complementary split-ring resonator (C-SRR), but its fringe electric field is contained with a conductive shield to intensify the normal component of the electric field. It is shown that by tightly electromagnetically coupling opposite sides of the unit-cell sensor to the input/output microstrip feedlines, two distinct resonant modes are excited. Perturbation of the fundamental mode is exploited here for determining the permittivity of materials. The sensitivity of the modified metamaterial unit-cell sensor is enhanced four-fold by using it to construct a tri-composite split-ring resonator (TC-SRR). The measured results confirm that the proposed technique provides an accurate and inexpensive solution to determine the permittivity of materials.
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Affiliation(s)
- Mohammad Alibakhshikenari
- Department of Signal Theory and Communications, Universidad Carlos III de Madrid, 28911 Leganés, Madrid, Spain
| | - Bal S Virdee
- School of Computing and Digital Media, Center for Communications Technology, London Metropolitan University, 166-220 Holloway Road, London N7 8DB, UK
| | - Taha A Elwi
- Communication Engineering Department, Al-Ma' Moon University College, Baghdad 1004, Iraq
- International Applied and Theoretical Research Centre (IATRC), Baghdad 10001, Iraq
| | - Innocent D Lubangakene
- School of Computing and Digital Media, Center for Communications Technology, London Metropolitan University, 166-220 Holloway Road, London N7 8DB, UK
| | - Renu K R Jayanthi
- School of Computing and Digital Media, Center for Communications Technology, London Metropolitan University, 166-220 Holloway Road, London N7 8DB, UK
| | - Amer Abbood Al-Behadili
- Electrical Engineering, College of Engineering, Mustansiriyah University, Baghdad 10052, Iraq
| | - Zaid A Abdul Hassain
- Electrical Engineering, College of Engineering, Mustansiriyah University, Baghdad 10052, Iraq
| | - Syed Mansoor Ali
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Giovanni Pau
- Faculty of Engineering and Architecture, Kore University of Enna, 94100 Enna, Italy
| | - Patrizia Livreri
- Department of Engineering, University of Palermo, viale delle Scienze BLDG 9, 90127 Palermo, Italy
| | - Sonia Aïssa
- Institut National de la Recherche Scientifique (INRS), University of Québec, Montréal, QC H5A 1K6, Canada
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10
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Sathish K, Hamdi M, Chinthaginjala Venkata R, Alibakhshikenari M, Ayadi M, Pau G, Abbas M, Shukla NK. Acoustic Wave Reflection in Water Affects Underwater Wireless Sensor Networks. Sensors (Basel) 2023; 23:s23115108. [PMID: 37299834 DOI: 10.3390/s23115108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/13/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023]
Abstract
The phenomenon of acoustic wave reflection off fluid-solid surfaces is the focus of this research. This research aims to measure the effect of material physical qualities on oblique incidence acoustic attenuation across a large frequency range. To construct the extensive comparison shown in the supporting documentation, reflection coefficient curves were generated by carefully adjusting the porousness and permeability of the poroelastic solid. The next stage in determining its acoustic response is to determine the pseudo-Brewster angle shift and the reflection coefficient minimum dip for the previously indicated attenuation permutations. This circumstance is made possible by modeling and studying the reflection and absorption of acoustic plane waves encountering half-space and two-layer surfaces. For this purpose, both viscous and thermal losses are taken into account. According to the research findings, the propagation medium has a significant impact on the form of the curve that represents the reflection coefficient, whereas the effects of permeability, porosity, and driving frequency are relatively less significant to the pseudo-Brewster angle and curve minima, respectively. This research additionally found that as permeability and porosity increase, the pseudo-Brewster angle shifts to the left (proportionally to porosity increase) until it reaches a limiting value of 73.4 degrees, and that the reflection coefficient curves for each level of porosity exhibit a greater angular dependence, with an overall decrease in magnitude at all incident angles. These findings are given within the framework of the investigation (in proportion to the increase in porosity). The study concluded that when permeability declined, the angular dependence of frequency-dependent attenuation reduced, resulting in iso-porous curves. The study also discovered that the matrix porosity largely affected the angular dependency of the viscous losses in the range of 1.4 × 10-14 m2 permeability.
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Affiliation(s)
- Kaveripakam Sathish
- School of Electronics Engineering, Vellore Institute of Technology, Vellore 632014, India
| | - Monia Hamdi
- Department of Information Technology, College of Computer and Information Sciences, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | | | - Mohammad Alibakhshikenari
- Department of Signal Theory and Communications, Universidad Carlos III de Madrid, 28911 Leganés, Madrid, Spain
| | - Manel Ayadi
- Department of Information Systems, College of Computer and Information Sciences, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Giovanni Pau
- Faculty of Engineering and Architecture, Kore University of Enna, 94100 Enna, Italy
| | - Mohamed Abbas
- Electrical Engineering Department, College of Engineering, King Khalid University, Abha 61421, Saudi Arabia
| | - Neeraj Kumar Shukla
- Electrical Engineering Department, College of Engineering, King Khalid University, Abha 61421, Saudi Arabia
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11
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Parchin NO, Alibakhshikenari M, See CH, Dayoub I, Abd-Alhameed R. CPW-Fed MIMO Smartphone Antenna Array with Radiation/Polarization Diversity for 5G Applications. 2023 IEEE IAS Global Conference on Emerging Technologies (GlobConET) 2023. [DOI: 10.1109/globconet56651.2023.10150147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
- Naser Ojaroudi Parchin
- Edinburgh Napier University,School of Computing, Engineering and the Built Environment,Edinburgh,U.K.,EH10 5DT
| | - Mohammad Alibakhshikenari
- Universidad Carlos III de Madrid,Department of Signal Theory and Communications,Leganés, Madrid,Spain,28911
| | - Chan Hwang See
- Edinburgh Napier University,School of Computing, Engineering and the Built Environment,Edinburgh,U.K.,EH10 5DT
| | - Iyad Dayoub
- University of Lille,Université Polytechnique Hauts-de-France, Institut d’Électronique de Microélectronique et de Nanotechnologie (IEMN) CNRS UMR 8520, ISEN, Centrale Lille,Valenciennes,France,59313
| | - Raed Abd-Alhameed
- University of Bradford,Faculty of Engineering and Informatics,Bradford,U.K.,BD7 1DP
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12
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Sehrai DA, Khan J, Abdullah M, Asif M, Alibakhshikenari M, Virdee B, Shah WA, Khan S, Ibrar M, Jan S, Ullah A, Falcone F. Design of high gain base station antenna array for mm-wave cellular communication systems. Sci Rep 2023; 13:4907. [PMID: 36966201 PMCID: PMC10039908 DOI: 10.1038/s41598-023-31728-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 03/16/2023] [Indexed: 03/27/2023] Open
Abstract
Millimeter wave (mm-Wave) wireless communication systems require high gain antennas to overcome path loss effects and thereby enhance system coverage. This paper presents the design and analysis of an antenna array for high gain performance of future mm-wave 5G communication systems. The proposed antenna is based on planar microstrip technology and fabricated on 0.254 mm thick dielectric substrate (Rogers-5880) having a relative permittivity of 2.2 and loss tangent of 0.0009. The single radiating element used to construct the antenna array is a microstrip patch that has a configuration resembling a two-pronged fork. The single radiator has a realized gain of 7.6 dBi. To achieve the gain required by 5G base stations, a 64-element array antenna design is proposed which has a bore side gain of 21.2 dBi at 37.2 GHz. The 8 × 8, 8 × 16, and 8 × 32 antenna array designs described here were simulated and optimized using CST Microwave Studio, which is a 3D full-wave electromagnetic solver. The overall characteristics of the array in terms of reflection-coefficient and radiation patterns makes the proposed design suitable for mm-Wave 5G and other communication systems.
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Affiliation(s)
- Daniyal Ali Sehrai
- Department of Electrical Engineering, University of Oviedo, 33203, Gijon, Spain
| | - Jalal Khan
- Telecommunication Engineering Department, University of Engineering and Technology, Mardan, 23200, Pakistan
| | - Mujeeb Abdullah
- College of Aeronautical Engineering, National University of Sciences and Technology, Risalpur (Campus), Nowshera, 24100, Pakistan
| | - Muhammad Asif
- Electrical Engineering Department, University of Science and Technology, Bannu, 23200, Pakistan.
| | - Mohammad Alibakhshikenari
- Department of Signal Theory and Communications, Universidad Carlos III de Madrid, 28911, Leganes, Madrid, Spain.
| | - Bal Virdee
- Center for Communications Technology, London Metropolitan University, London, UK
| | - Wahab Ali Shah
- Department of Electrical Engineering, Namal University, Mianwali, 42250, Pakistan
| | - Salahuddin Khan
- College of Engineering, King Saud University, P.O.Box 800, Riyadh, 11421, Saudi Arabia
| | - Muhammad Ibrar
- Department of Physics, Islamia College, Peshawar, 25000, Pakistan
| | - Saeedullah Jan
- Department of Physics, Islamia College, Peshawar, 25000, Pakistan
| | - Amjad Ullah
- Department of Electrical Engineering, University of Engineering and Technology, Peshawar, 25000, Pakistan
| | - Francisco Falcone
- Department of Electric, Electronic and Communication Engineering and the Institute of Smart Cities, Public University of Navarre, 31006, Pamplona, Spain.
- Tecnologico de Monterrey, School of Engineering and Sciences, 64849, Monterrey, Mexico.
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13
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Karamirad M, Pouyanfar N, Alibakhshikenari M, Ghobadi C, Nourinia J, See CH, Falcone F. Low-loss and dual-band filter inspired by glide symmetry principle over millimeter-wave spectrum for 5G cellular networks. iScience 2022; 26:105899. [PMID: 36691624 PMCID: PMC9860387 DOI: 10.1016/j.isci.2022.105899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/28/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022] Open
Abstract
This paper focuses on designing a dual-band, bandpass filter configuration inspired by glide-symmetric structures in a single plane. Geometry configuration of elliptical slots on both sides of single substrate generally affects electromagnetic fields as well as rejection bands. Easy fabrication with misalignment avoidance during assembly procedure unlike conventional structures based on gap waveguide technology, make them appropriate to use in electromagnetic devices. Parametric study on dispersion characteristics is carried out in this article to find out how rejection-bands are offered through breaking the symmetry. A method for producing symmetry is also suggested, which may be helpful for reconfigurable devices. Moreover, equivalent circuit model is demonstrated to get insight of the mechanism of the presented glide symmetry scheme. The transmission frequency ranges of two passbands with center frequencies of 19.74 GHz and 28.233 GHz are shown by the measured and calculated S- parameters of five unit-cell structures.
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Affiliation(s)
- Mohsen Karamirad
- Department of Electrical Engineering, Urmia University, Urmia, Iran
| | - Negin Pouyanfar
- Department of Electrical Engineering, Urmia University, Urmia, Iran
| | - Mohammad Alibakhshikenari
- Department of Signal Theory and Communications, Universidad Carlos III de Madrid, Leganés, 28911 Madrid, Spain,Corresponding author
| | - Changiz Ghobadi
- Department of Electrical Engineering, Urmia University, Urmia, Iran
| | - Javad Nourinia
- Department of Electrical Engineering, Urmia University, Urmia, Iran
| | - Chan Hwang See
- School of Engineering and the Built Environment, Edinburgh Napier University, 10 Colinton Road, Edinburgh EH10 5DT, UK
| | - Francisco Falcone
- Department of Electric, Electronic and Communication Engineering and the Institute of Smart Cities, Public University of Navarre, and the Tecnologico de Monterrey, School of Engineering and Sciences, 31006 Pamplona, Spain
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14
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Parchin NO, Ullah A, Alibakhshikenari M, Abd-Alhameed RA. UWB Band-Pass Filter with Dual Notched Bands Using Electromagnetic Band Gap Structure. 2022 4th IEEE Middle East and North Africa COMMunications Conference (MENACOMM) 2022. [DOI: 10.1109/menacomm57252.2022.9998262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
- Naser Ojaroudi Parchin
- Edinburgh Napier University,School of Engineering and the Built Environment,Edinburgh,UK
| | - Atta Ullah
- University of Bradford,Faculty of Engineering and Informatics,Bradford,UK,BD7 1DP
| | - Mohammad Alibakhshikenari
- Universidad Carlos III de Madrid,Department of Signal Theory and Communications,Leganés, Madrid,Spain,28911
| | - Raed A. Abd-Alhameed
- University of Bradford,Faculty of Engineering and Informatics,Bradford,UK,BD7 1DP
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15
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Parchin NO, Ullah A, Alibakhshikenari M, Abd-Alhameed RA. A Broadband Beam-Steerable Antenna Array for Future Hand-Portable Devices. 2022 4th IEEE Middle East and North Africa COMMunications Conference (MENACOMM) 2022. [DOI: 10.1109/menacomm57252.2022.9998293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
- Naser Ojaroudi Parchin
- Edinburgh Napier University,School of Engineering and the Built Environment,Edinburgh,UK
| | - Atta Ullah
- University of Bradford,Faculty of Engineering and Informatics,Bradford,UK,BD7 1DP
| | - Mohammad Alibakhshikenari
- Universidad Carlos III de Madrid,Department of Signal Theory and Communications,Leganés, Madrid,Spain,28911
| | - Raed A. Abd-Alhameed
- University of Bradford,Faculty of Engineering and Informatics,Bradford,UK,BD7 1DP
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16
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Ullah A, Parchin NO, Alibakhshikenari M, Abd-Alhameed RA. Frequency Reconfigurable MIMO Antenna Design for Sub 6 GHz Smartphone Applications. 2022 4th IEEE Middle East and North Africa COMMunications Conference (MENACOMM) 2022. [DOI: 10.1109/menacomm57252.2022.9998256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
- Atta Ullah
- University of Bradford,Faculty of Engineering and Informatics,Bradford,UK,BD7 1DP
| | - Naser Ojaroudi Parchin
- Edinburgh Napier University,School of Engineering and the Built Environment,Edinburgh,UK
| | - Mohammad Alibakhshikenari
- Universidad Carlos III de Madrid,Department of Signal Theory and Communications,Leganés, Madrid,Spain,28911
| | - Raed A. Abd-Alhameed
- University of Bradford,Faculty of Engineering and Informatics,Bradford,UK,BD7 1DP
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17
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Hussain M, Ali EM, Awan WA, Hussain N, Alibakhshikenari M, Virdee BS, Falcone F. Electronically reconfigurable and conformal triband antenna for wireless communications systems and portable devices. PLoS One 2022; 17:e0276922. [PMID: 36454808 PMCID: PMC9714694 DOI: 10.1371/journal.pone.0276922] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 10/14/2022] [Indexed: 12/02/2022] Open
Abstract
This paper presents the design of a triband antenna that can be electronically configured to operate at different frequencies. The proposed antenna is design to operate at sub-6GHz bands at 2.45 GHz (ISM, Wi-Fi, and WLAN), 3.3, 3.5 & 3.9 GHz (WiMAX), and 4.1 & 4.9 GHz (4G & 5G). This is achieved by connecting two open-ended stubs to a modified triangular patch radiator using PIN diodes. The antenna's performance was optimized using a 3D electromagnetic solver and its performance was verified through measurements. Moreover, the conformal analysis done on the antenna shows that the proposed technique can be used in moderately flexible wireless devices without compromising the antenna's gain, radiation efficiency and radiation patterns. These characteristics makes the proposed antenna applicable for various wireless communication systems and devices.
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Affiliation(s)
- Musa Hussain
- Department of Electrical Engineering, Bahria University, Islamabad Campus, Islamabad, Pakistan
| | - Esraa Musa Ali
- Faculty of Aviation Sciences, Amman Arab University, Amman, Jordan
- * E-mail: (EMA); (NH); (MA)
| | - Wahaj Abbas Awan
- Department of Information and Communication Engineering, Chungbuk National University, Cheongju, South Korea
| | - Niamat Hussain
- Department of Smart Device Engineering, Sejong University, Seoul, South Korea
- * E-mail: (EMA); (NH); (MA)
| | - Mohammad Alibakhshikenari
- Department of Signal Theory and Communications, Universidad Carlos III de Madrid, Leganés, Madrid, Spain
- * E-mail: (EMA); (NH); (MA)
| | - Bal S. Virdee
- Center for Communications Technology, School of Computing and Digital Media, London Metropolitan University, London, United Kingdom
| | - Francisco Falcone
- Department of Electric, Electronic and Communication Engineering and the Institute of Smart Cities, Public University of Navarre, Pamplona, Spain
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, Mexico
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18
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Anjum N, Alibakhshikenari M, Rashid J, Jabeen F, Asif A, Mohamed EM, Falcone F. IoT-Based COVID-19 Diagnosing and Monitoring Systems: A Survey. IEEE Access 2022; 10:87168-87181. [PMID: 36345377 PMCID: PMC9454266 DOI: 10.1109/access.2022.3197164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 08/03/2022] [Indexed: 05/28/2023]
Abstract
To date, the novel Coronavirus (SARS-CoV-2) has infected millions and has caused the deaths of thousands of people around the world. At the moment, five antibodies, two from China, two from the U.S., and one from the UK, have already been widely utilized and numerous vaccines are under the trail process. In order to reach herd immunity, around 70% of the population would need to be inoculated. It may take several years to hinder the spread of SARS-CoV-2. Governments and concerned authorities have taken stringent measurements such as enforcing partial, complete, or smart lockdowns, building temporary medical facilities, advocating social distancing, and mandating masks in public as well as setting up awareness campaigns. Furthermore, there have been massive efforts in various research areas and a wide variety of tools, technologies and techniques have been explored and developed to combat the war against this pandemic. Interestingly, machine learning (ML) algorithms and internet of Things (IoTs) technology are the pioneers in this race. Up till now, several real-time and intelligent IoT-based COVID-19 diagnosing, and monitoring systems have been proposed to tackle the pandemic. In this article we have analyzed a wide range of IoTs technologies which can be used in diagnosing and monitoring the infected individuals and hotspot areas. Furthermore, we identify the challenges and also provide our vision about the future research on COVID-19.
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Affiliation(s)
- Nasreen Anjum
- Department of Cyber and Technical Computing, School of Computing and EngineeringUniversity of Gloucestershire, Park Campus, CheltenhamGloucestershireGL50 2RHU.K.
| | - Mohammad Alibakhshikenari
- Department of Signal Theory and CommunicationsUniversidad Carlos III de Madrid, 28911 LeganésMadridSpain
| | - Junaid Rashid
- Department of Computer and EngineeringKongju National UniversityCheonan31080South Korea
| | - Fouzia Jabeen
- Department of Computer ScienceShaheed Benazir Bhutto Women University PeshawarPeshawar00384Pakistan
| | - Amna Asif
- Department of Computer ScienceShaheed Benazir Bhutto Women University PeshawarPeshawar00384Pakistan
| | - Ehab Mahmoud Mohamed
- Department of Electrical EngineeringCollege of Engineering in Wadi AddawasirPrince Sattam Bin Abdulaziz UniversityWadi Addawasir11991Saudi Arabia
- Department of Electrical EngineeringAswan UniversityAswan81542Egypt
| | - Francisco Falcone
- Department of Electric, Electronic and Communication Engineering and the Institute of Smart CitiesPublic University of Navarre31006PamplonaSpain
- Tecnológico de MonterreySchool of Engineering and SciencesMonterrey64849Mexico
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19
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Bouknia ML, Zebiri C, Sayad D, Elfergani I, Matin M, Alibakhshikenari M, Alharbi AG, Hu YF, Abd-Alhameed R, Rodriguez J, Falcone F, Limiti E. Analysis of gyrobianisotropic media effect on the input impedance, field distribution and mutual coupling of a printed dipole antenna. Sci Rep 2022; 12:10355. [PMID: 35725734 PMCID: PMC9209530 DOI: 10.1038/s41598-022-13410-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 05/16/2022] [Indexed: 11/09/2022] Open
Abstract
In this paper, we present an analytical study for the investigation of the effects of the magnetoelectric elements of a reciprocal and nonreciprocal bianisotropic grounded substrate on the input impedance, resonant length of a dipole antenna as well as on the mutual coupling between two element printed dipole array in three configuration geometries: broadside, collinear and echelon printed on the same material. This study examines also the effect of the considered bianisotropic medium on the electric and magnetic field distributions that has been less addressed in the literature for antenna structures. Computations are based on the numerical resolution, using the spectral method of moments, of the integral equation developed through the mathematical derivation of the appropriate spectral Green's functions of the studied dipole configuration. Original results, for chiral, achiral, Tellegen and general bi-anisotropic media cases, are obtained and discussed with the electric and magnetic field distributions for a better understanding and interpretation. These interesting results can serve as a stepping stone for further works to attract more attention to the reciprocal and non-reciprocal Tellgen media in-depth studies.
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Affiliation(s)
- Mohamed Lamine Bouknia
- Laboratoire d'Electronique de Puissance et Commande Industrielle (LEPCI), Department of Electronics, University of Ferhat Abbas, Sétif -1, 19000, Sétif, Algeria
| | - Chemseddine Zebiri
- Laboratoire d'Electronique de Puissance et Commande Industrielle (LEPCI), Department of Electronics, University of Ferhat Abbas, Sétif -1, 19000, Sétif, Algeria
| | - Djamel Sayad
- Laboratoire d'Electrotechnique de Skikda (LES), University 20 Aout 1955-Skikda, 21000, Skikda, Algeria
| | - Issa Elfergani
- Instituto de Telecomunicações, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal.,School of Engineering and Informatics, University of Bradford, Bradford, BD7 1DP, UK
| | - Mohammad Matin
- Department of Electrical and Computer Engineering, North South University (NSU), Dhaka, 1229, Bangladesh
| | - Mohammad Alibakhshikenari
- Department of Signal Theory and Communications, Universidad Carlos III de Madrid, 28911, Leganés, Madrid, Spain.
| | - Abdullah G Alharbi
- Department of Electrical Engineering, Faculty of Engineering, Jouf University, Sakaka, 42421, Saudi Arabia
| | - Yim Fun Hu
- School of Engineering and Informatics, University of Bradford, Bradford, BD7 1DP, UK
| | - Raed Abd-Alhameed
- School of Engineering and Informatics, University of Bradford, Bradford, BD7 1DP, UK
| | - Jonathan Rodriguez
- Instituto de Telecomunicações, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Francisco Falcone
- Electric, Electronic and Communication Engineering Department, Public University of Navarre, 31006, Pamplona, Spain.,Institute of Smart Cities, Public University of Navarre, 31006, Pamplona, Spain
| | - Ernesto Limiti
- Electronic Engineering Department, University of Rome "Tor Vergata", Via del Politecnico 1, 00133, Rome, Italy
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20
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Alibakhshikenari M, Virdee BS, Benetatos H, Ali EM, Soruri M, Dalarsson M, Naser-Moghadasi M, See CH, Pietrenko-Dabrowska A, Koziel S, Szczepanski S, Limiti E. An innovative antenna array with high inter element isolation for sub-6 GHz 5G MIMO communication systems. Sci Rep 2022; 12:7907. [PMID: 35550585 PMCID: PMC9098627 DOI: 10.1038/s41598-022-12119-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 05/03/2022] [Indexed: 12/02/2022] Open
Abstract
A novel technique is shown to improve the isolation between radiators in antenna arrays. The proposed technique suppresses the surface-wave propagation and reduces substrate loss thereby enhancing the overall performance of the array. This is achieved without affecting the antenna’s footprint. The proposed approach is demonstrated on a four-element array for 5G MIMO applications. Each radiating element in the array is constituted from a 3 × 3 matrix of interconnected resonant elements. The technique involves (1) incorporating matching stubs within the resonant elements, (2) framing each of the four-radiating elements inside a dot-wall, and (3) defecting the ground plane with dielectric slots that are aligned under the dot-walls. Results show that with the proposed approach the impedance bandwidth of the array is increased by 58.82% and the improvement in the average isolation between antennas #1&2, #1&3, #1&4 are 8 dB, 14 dB, 16 dB, and 13 dB, respectively. Moreover, improvement in the antenna gain is 4.2% and the total radiation efficiency is 23.53%. These results confirm the efficacy of the technique. The agreement between the simulated and measured results is excellent. Furthermore, the manufacture of the antenna array using the proposed approach is relatively straightforward and cost effective.
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Affiliation(s)
- Mohammad Alibakhshikenari
- Department of Signal Theory and Communications, Universidad Carlos III de Madrid, 28911, Leganés, Madrid, Spain.
| | - Bal S Virdee
- School of Computing and Digital Media, Center for Communications Technology, London Metropolitan University, London, N7 8DB, UK
| | - Harry Benetatos
- School of Computing and Digital Media, Center for Communications Technology, London Metropolitan University, London, N7 8DB, UK
| | - Esraa Mousa Ali
- Faculty of Aviation Sciences, Amman Arab University, Amman, 11953, Jordan
| | - Mohammad Soruri
- Technical Faculty of Ferdows, University of Birjand, Birjand, 9717434765, Iran
| | - Mariana Dalarsson
- School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, 100-44, Stockholm, Sweden
| | - Mohammad Naser-Moghadasi
- Department of Electrical and Computer Engineering, Science and Research Branch, Islamic Azad University, Tehran, 14778-93855, Iran
| | - Chan Hwang See
- School of Engineering and the Built Environment, Edinburgh Napier University, 10 Colinton Rd., Edinburgh, EH10 5DT, UK
| | - Anna Pietrenko-Dabrowska
- Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, 80-233, Gdansk, Poland
| | - Slawomir Koziel
- Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, 80-233, Gdansk, Poland.,Engineering Optimization and Modeling Center, Reykjavik University, 101, Reykjavik, Iceland
| | - Stanislaw Szczepanski
- Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, 80-233, Gdansk, Poland
| | - Ernesto Limiti
- Electronic Engineering Department, University of Rome "Tor Vergata", Via del Politecnico 1, 00133, Rome, Italy
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21
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Fakharian MM, Alibakhshikenari M, See CH, Abd-Alhameed R. A high gain multiband offset MIMO antenna based on a planar log-periodic array for Ku/K-band applications. Sci Rep 2022; 12:4044. [PMID: 35260692 PMCID: PMC8904477 DOI: 10.1038/s41598-022-07866-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 02/25/2022] [Indexed: 12/01/2022] Open
Abstract
An offset quad-element, two-port, high-gain, and multiband multiple-input multiple-output (MIMO) planar antenna based on a log-periodic dipole array (LPDA) for Ku/K-band wireless communications is proposed, in this paper. A single element antenna has been designed starting from Carrel’s theory and then optimized with a 50-Ω microstrip feed-line with two orthogonal branches that results mainly in a broadside radiation pattern and improves diversity parameters. For experimental confirmation, the designed structure is printed on an RT-5880 substrate with a thickness of 1.57 mm. The total substrate dimensions of the MIMO antenna are 55 × 45 mm2. According to the measured results, the designed structure is capable of working at 1.3% (12.82–12.98 GHz), 3.1% (13.54–13.96 GHz), 2.3% (14.81–15.15 GHz), 4.5% (17.7–18.52 GHz), and 4.6% (21.1–22.1 GHz) frequency bands. Additionally, the proposed MIMO antenna attains a peak gain of 4.2–10.7 dBi with maximum element isolation of 23.5 dB, without the use of any decoupling structure. Furthermore, the analysis of MIMO performance metrics such as the envelope correlation coefficient (ECC) and mean effective gain (MEG) validates good characteristics, and field correlation performance over the operating band. The proposed design is an appropriate option for multiband MIMO applications for various wireless systems in Ku/K-bands.
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Affiliation(s)
| | - Mohammad Alibakhshikenari
- Department of Signal Theory and Communications, Universidad Carlos III de Madrid, 28911, Leganés, Madrid, Spain
| | - Chan Hwang See
- School of Engineering and the Built Environment, Edinburgh Napier University, Edinburgh, EH10 5DT, UK
| | - Raed Abd-Alhameed
- Faculty of Engineering and Informatics, University of Bradford, Bradford, BD7 1DP, UK
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22
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Elkorany AS, Mousa AN, Ahmad S, Saleeb DA, Ghaffar A, Soruri M, Dalarsson M, Alibakhshikenari M, Limiti E. Implementation of a Miniaturized Planar Tri-Band Microstrip Patch Antenna for Wireless Sensors in Mobile Applications. Sensors (Basel) 2022; 22:s22020667. [PMID: 35062628 PMCID: PMC8777920 DOI: 10.3390/s22020667] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/11/2022] [Accepted: 01/13/2022] [Indexed: 01/27/2023]
Abstract
Antennas in wireless sensor networks (WSNs) are characterized by the enhanced capacity of the network, longer range of transmission, better spatial reuse, and lower interference. In this paper, we propose a planar patch antenna for mobile communication applications operating at 1.8, 3.5, and 5.4 GHz. A planar microstrip patch antenna (MPA) consists of two F-shaped resonators that enable operations at 1.8 and 3.5 GHz while operation at 5.4 GHz is achieved when the patch is truncated from the middle. The proposed planar patch is printed on a low-cost FR-4 substrate that is 1.6 mm in thickness. The equivalent circuit model is also designed to validate the reflection coefficient of the proposed antenna with the S11 obtained from the circuit model. It contains three RLC (resistor-inductor-capacitor) circuits for generating three frequency bands for the proposed antenna. Thereby, we obtained a good agreement between simulation and measurement results. The proposed antenna has an elliptically shaped radiation pattern at 1.8 and 3.5 GHz, while the broadside directional pattern is obtained at the 5.4 GHz frequency band. At 1.8, 3.5, and 5.4 GHz, the simulated peak realized gains of 2.34, 5.2, and 1.42 dB are obtained and compared to the experimental peak realized gains of 2.22, 5.18, and 1.38 dB at same frequencies. The results indicate that the proposed planar patch antenna can be utilized for mobile applications such as digital communication systems (DCS), worldwide interoperability for microwave access (WiMAX), and wireless local area networks (WLAN).
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Affiliation(s)
- Ahmed Saad Elkorany
- Department of Electronics and Electrical Communication Engineering, Faculty of Electronic Engineering, Menoufia University, Menouf 32952, Egypt; (A.S.E.); (A.N.M.)
| | - Alyaa Nehru Mousa
- Department of Electronics and Electrical Communication Engineering, Faculty of Electronic Engineering, Menoufia University, Menouf 32952, Egypt; (A.S.E.); (A.N.M.)
| | - Sarosh Ahmad
- Department of Electrical Engineering and Technology, Government College University Faisalabad (GCUF), Faisalabad 38000, Pakistan
- Department of Signal Theory and Communications, Universidad Carlos III de Madrid, Leganés, 28911 Madrid, Spain
- Correspondence: (S.A.); (M.D.); (M.A.)
| | | | - Adnan Ghaffar
- Department of Electrical and Electronic Engineering, Auckland University of Technology, Auckland 1010, New Zealand;
| | - Mohammad Soruri
- Technical Faculty of Ferdows, University of Birjand, Birjand 9717434765, Iran;
| | - Mariana Dalarsson
- School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, SE 100-44 Stockholm, Sweden
- Correspondence: (S.A.); (M.D.); (M.A.)
| | - Mohammad Alibakhshikenari
- Department of Signal Theory and Communications, Universidad Carlos III de Madrid, Leganés, 28911 Madrid, Spain
- Correspondence: (S.A.); (M.D.); (M.A.)
| | - Ernesto Limiti
- Electronic Engineering Department, University of Rome “Tor Vergata”, Vial Del Politecnico 1, 00133 Rome, Italy;
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23
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Alibakhshikenari M, Virdee BS, Althuwayb AA, Azpilicueta L, Parchin NO, See CH, Abd-Alhameed RA, Falcone F, Huynen I, Denidni TA, Limiti E. Bandwidth and gain enhancement of composite right left handed metamaterial transmission line planar antenna employing a non foster impedance matching circuit board. Sci Rep 2021; 11:7472. [PMID: 33811233 PMCID: PMC8018970 DOI: 10.1038/s41598-021-86973-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 03/22/2021] [Indexed: 11/23/2022] Open
Abstract
The paper demonstrates an effective technique to significantly enhance the bandwidth and radiation gain of an otherwise narrowband composite right/left-handed transmission-line (CRLH-TL) antenna using a non-Foster impedance matching circuit (NF-IMC) without affecting the antenna’s stability. This is achieved by using the negative reactance of the NF-IMC to counteract the input capacitance of the antenna. Series capacitance of the CRLH-TL unit-cell is created by etching a dielectric spiral slot inside a rectangular microstrip patch that is grounded through a spiraled microstrip inductance. The overall size of the antenna, including the NF-IMC at its lowest operating frequency is 0.335λ0 × 0.137λ0 × 0.003λ0, where λ0 is the free-space wavelength at 1.4 GHz. The performance of the antenna was verified through actual measurements. The stable bandwidth of the antenna for |S11|≤ − 18 dB is greater than 1 GHz (1.4–2.45 GHz), which is significantly wider than the CRLH-TL antenna without the proposed impedance matching circuit. In addition, with the proposed technique the measured radiation gain and efficiency of the antenna are increased on average by 3.2 dBi and 31.5% over the operating frequency band.
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Affiliation(s)
- Mohammad Alibakhshikenari
- Electronic Engineering Department, University of Rome "Tor Vergata", Via Del Politecnico 1, 00133, Rome, Italy.
| | - Bal S Virdee
- Center for Communications Technology, London Metropolitan University, London, N7 8DB, UK
| | - Ayman A Althuwayb
- Department of Electrical Engineering, Jouf University, Sakaka, 72388, Aljouf, Saudi Arabia
| | - Leyre Azpilicueta
- School of Engineering and Sciences, Tecnologico de Monterrey, 64849, Monterrey, Mexico
| | - Naser Ojaroudi Parchin
- Faculty of Engineering and Informatics, University of Bradford, Bradford, BD7 1DP, West Yorkshire, UK
| | - Chan H See
- School of Engineering and the Built Environment, Edinburgh Napier University, 10 Colinton Rd, Edinburgh, EH10 5DT, UK
| | - Raed A Abd-Alhameed
- Faculty of Engineering and Informatics, University of Bradford, Bradford, BD7 1DP, West Yorkshire, UK
| | - Francisco Falcone
- Electronic and Communication Engineering Department, Public University of Navarre, 31006, Pamplona, Spain.,Institute of Smart Cities, Public University of Navarre, 31006, Pamplona, Spain
| | - Isabelle Huynen
- Institute of Information and Communication Technologies, Electronics and Applied Mathematics, Université Catholique de Louvain, 1348, Louvain-la-Neuve, Belgium
| | - Tayeb A Denidni
- Institut National de La Recherche Scientifique (INRS), University of Quebec, Montréal, Québec, H5A 1K6, Canada
| | - Ernesto Limiti
- Electronic Engineering Department, University of Rome "Tor Vergata", Via Del Politecnico 1, 00133, Rome, Italy
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Althuwayb AA, Alibakhshikenari M, Virdee BS, Shukla P, Limiti E. Realizing UWB Antenna Array with Dual and Wide Rejection Bands Using Metamaterial and Electromagnetic Bandgaps Techniques. Micromachines (Basel) 2021; 12:mi12030269. [PMID: 33800803 PMCID: PMC8001207 DOI: 10.3390/mi12030269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/04/2021] [Accepted: 03/04/2021] [Indexed: 11/16/2022]
Abstract
This research article describes a technique for realizing wideband dual notched functionality in an ultra-wideband (UWB) antenna array based on metamaterial and electromagnetic bandgap (EBG) techniques. For comparison purposes, a reference antenna array was initially designed comprising hexagonal patches that are interconnected to each other. The array was fabricated on standard FR-4 substrate with thickness of 0.8 mm. The reference antenna exhibited an average gain of 1.5 dBi across 5.25-10.1 GHz. To improve the array's impedance bandwidth for application in UWB systems metamaterial (MTM) characteristics were applied it. This involved embedding hexagonal slots in patch and shorting the patch to the ground-plane with metallic via. This essentially transformed the antenna to a composite right/left-handed structure that behaved like series left-handed capacitance and shunt left-handed inductance. The proposed MTM antenna array now operated over a much wider frequency range (2-12 GHz) with average gain of 5 dBi. Notched band functionality was incorporated in the proposed array to eliminate unwanted interference signals from other wireless communications systems that coexist inside the UWB spectrum. This was achieved by introducing electromagnetic bandgap in the array by etching circular slots on the ground-plane that are aligned underneath each patch and interconnecting microstrip-line in the array. The proposed techniques had no effect on the dimensions of the antenna array (20 mm × 20 mm × 0.87 mm). The results presented confirm dual-band rejection at the wireless local area network (WLAN) band (5.15-5.825 GHz) and X-band satellite downlink communication band (7.10-7.76 GHz). Compared to other dual notched band designs previously published the footprint of the proposed technique is smaller and its rejection notches completely cover the bandwidth of interfering signals.
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Affiliation(s)
- Ayman A. Althuwayb
- Department of Electrical Engineering, College of Engineering, Jouf University, Sakaka, Aljouf 72388, Saudi Arabia
- Correspondence: (A.A.A.); (M.A.)
| | - Mohammad Alibakhshikenari
- Electronic Engineering Department, University of Rome “Tor Vergata”, Via del Politecnico 1, 00133 Rome, Italy;
- Correspondence: (A.A.A.); (M.A.)
| | - Bal S. Virdee
- Center for Communications Technology, London Metropolitan University, London N7 8DB, UK; (B.S.V.); (P.S.)
| | - Pancham Shukla
- Center for Communications Technology, London Metropolitan University, London N7 8DB, UK; (B.S.V.); (P.S.)
| | - Ernesto Limiti
- Electronic Engineering Department, University of Rome “Tor Vergata”, Via del Politecnico 1, 00133 Rome, Italy;
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Alibakhshikenari M, Virdee BS, Shukla P, See CH, Abd-Alhameed RA, Falcone F, Limiti E. Improved adaptive impedance matching for RF front-end systems of wireless transceivers. Sci Rep 2020; 10:14065. [PMID: 32826943 PMCID: PMC7442656 DOI: 10.1038/s41598-020-71056-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Accepted: 07/28/2020] [Indexed: 11/24/2022] Open
Abstract
In this paper an automatic adaptive antenna impedance tuning algorithm is presented that is based on quantum inspired genetic optimization technique. The proposed automatic quantum genetic algorithm (AQGA) is used to find the optimum solution for a low-pass passive T-impedance matching LC-network inserted between an RF transceiver and its antenna. Results of the AQGA tuning method are presented for applications across 1.4 to 5 GHz (satellite services, LTE networks, radar systems, and WiFi bands). Compared to existing genetic algorithm-based tuning techniques the proposed algorithm converges much faster to provide a solution. At 1.4, 2.3, 3.4, 4.0, and 5.0 GHz bands the proposed AQGA is on average 75%, 49.2%, 64.9%, 54.7%, and 52.5% faster than conventional genetic algorithms, respectively. The results reveal the proposed AQGA is feasible for real-time application in RF-front-end systems.
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Affiliation(s)
- Mohammad Alibakhshikenari
- Electronic Engineering Department, University of Rome "Tor Vergata", Via del Politecnico 1, 00133, Rome, Italy.
| | - Bal S Virdee
- Center for Communications Technology, School of Computing & Digital Media, London Metropolitan University, London, N7 8DB, UK
| | - Pancham Shukla
- Center for Communications Technology, School of Computing & Digital Media, London Metropolitan University, London, N7 8DB, UK
| | - Chan H See
- School of Engineering & the Built Environment, Edinburgh Napier University, Merchiston Campus, 10 Colinton Road, Edinburgh, EH10 5DT, UK.,School of Engineering, University of Bolton, Deane Road, Bolton, BL3 5AB, UK
| | - Raed A Abd-Alhameed
- Faculty of Engineering and Informatics, University of Bradford, Bradford, BD7 1DP, West Yorkshire, UK
| | - Francisco Falcone
- Electric and Electronic Engineering Department, Universidad Pública de Navarra, Pamplona, Spain
| | - Ernesto Limiti
- Electronic Engineering Department, University of Rome "Tor Vergata", Via del Politecnico 1, 00133, Rome, Italy
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Alibakhshikenari M, Virdee BS, See CH, Abd-Alhameed RA, Falcone F, Limiti E. Impedance Matching Network Based on Metasurfaces (2-D Metamaterials) for Electrically Small Antennas. 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting 2020. [DOI: 10.1109/ieeeconf35879.2020.9330460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
| | - Bal S. Virdee
- London Metropolitan University, Center for Communications Technology & Mathematics,London,UK
| | - Chan H. See
- School of Engineering, University of Bolton,Bolton,UK
| | | | - Francisco Falcone
- Public University of Navarre,Electrical and Electronic Engineering Department,Pamplona,SPAIN
| | - Ernesto Limiti
- University of Rome “Tor Vergata”,Electronic Engineering Department,Rome,ITALY
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Alibakhshikenari M, Virdee BS, See CH, Abd-Alhameed RA, Falcone F, Limiti E. Energy Harvesting Circuit with High RF-to-DC Conversion Efficiency. 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting 2020. [DOI: 10.1109/ieeeconf35879.2020.9329604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
| | - Bal Singh Virdee
- London Metropolitan University, Center for Communications Technology & Mathematics,London,UK
| | | | | | - Francisco Falcone
- Public University of Navarre,Electrical and Electronic Engineering Department,Pamplona,SPAIN
| | - Ernesto Limiti
- University of Rome “Tor Vergata”,Electronic Engineering Department,Rome,ITALY
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Alibakhshikenari M, Virdee BS, See CH, Shukla P, Salekzamankhani S, Abd-Alhameed RA, Falcone F, Limiti E. Study on improvement of the performance parameters of a novel 0.41-0.47 THz on-chip antenna based on metasurface concept realized on 50 μm GaAs-layer. Sci Rep 2020; 10:11034. [PMID: 32620940 PMCID: PMC7335188 DOI: 10.1038/s41598-020-68105-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 06/16/2020] [Indexed: 12/03/2022] Open
Abstract
A feasibility study is presented on the performance parameters of a novel on-chip antenna based on metasurface technology at terahertz band. The proposed metasurface on-chip antenna is constructed on an electrically thin high-permittivity gallium arsenide (GaAs) substrate layer. Metasurface is implemented by engraving slot-lines on an array of 11 × 11 circular patches fabricated on the top layer of the GaAs substrate and metallic via-holes implemented in the central patch of each row constituting the array, which connects the patch to the leaky-wave open-ended feeding slot-lines running underneath the patches. The slot-lines are connected to each other with a slit. A waveguide port is used to excite the array via slot-lines that couple the electromagnetic energy to the patches. The metasurface on-chip antenna is shown to exhibit an average measured gain in excess of 10 dBi and radiation efficiency above 60% over a wide frequency range from 0.41 to 0.47 THz, which is significant development over other on-chip antenna techniques reported to date. Dimensions of the antenna are 8.6 × 8.6 × 0.0503 mm3. The results show that the proposed GaAs-based metasurface on-chip antenna is viable for applications in terahertz integrated circuits.
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Affiliation(s)
- Mohammad Alibakhshikenari
- Electronic Engineering Department, University of Rome "Tor Vergata", Via del Politecnico 1, 00133, Rome, Italy.
| | - Bal S Virdee
- Center for Communications Technology, School of Computing and Digital Media, London Metropolitan University, London, N7 8DB, UK
| | - Chan H See
- School of Engineering and The Built Environment, Edinburgh Napier University, Merchiston Campus, 10 Colinton Road, Edinburgh, EH10 5DT, UK.,School of Engineering, University of Bolton, Deane Road, Bolton, BL3 5AB, UK
| | - Pancham Shukla
- Center for Communications Technology, School of Computing and Digital Media, London Metropolitan University, London, N7 8DB, UK
| | - Shahram Salekzamankhani
- Center for Communications Technology, School of Computing and Digital Media, London Metropolitan University, London, N7 8DB, UK
| | - Raed A Abd-Alhameed
- Faculty of Engineering and Informatics, University of Bradford, Bradford, BD7 1DP, West Yorkshire, UK
| | - Francisco Falcone
- Electric and Electronic Engineering Department, Universidad Pública de Navarra, Pamplona, Spain
| | - Ernesto Limiti
- Electronic Engineering Department, University of Rome "Tor Vergata", Via del Politecnico 1, 00133, Rome, Italy
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Alibakhshikenari M, Parchin NO, Virdee BS, See CH, Abd-Alhameed RA, Falcone F, Limiti E. High Performance Metasurface-Based On-Chip Antenna for Terahertz Integrated Circuits. 2020 Third International Workshop on Mobile Terahertz Systems (IWMTS) 2020. [DOI: 10.1109/iwmts49292.2020.9166324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Alibakhshikenari M, Virdee BS, See CH, Abd-Alhameed RA, Falcone F, Limiti E. Metasurface for Controlling Polarization of Scattered EM Waves. 2020 4th Australian Microwave Symposium (AMS) 2020. [DOI: 10.1109/ams48904.2020.9059504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Alibakhshikenari M, Babaeian F, Virdee BS, AISSA SONIA, Azpilicueta L, See CH, Althuwayb AA, Huynen I, Abd-Alhameed RA, Falcone F, Limiti E. A Comprehensive Survey on “Various Decoupling Mechanisms With Focus on Metamaterial and Metasurface Principles Applicable to SAR and MIMO Antenna Systems”. IEEE Access 2020; 8:192965-193004. [DOI: 10.1109/access.2020.3032826] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Alibakhshikenari M, Virdee BS, See CH, Abd-Alhameed R, Falcone F, Limiti E. A Novel 0.3-0.31 THz GaAs-Based Transceiver with On-Chip Slotted Metamaterial Antenna Based on SIW Technology. 2019 IEEE Asia-Pacific Microwave Conference (APMC) 2019. [DOI: 10.1109/apmc46564.2019.9038371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Alibakhshikenari M, Virdee BS, See CH, Abd-Alhameed RA, Falcone F, Limiti E. Automated Reconfigurable Antenna Impedance for Optimum Power Transfer. 2019 IEEE Asia-Pacific Microwave Conference (APMC) 2019. [DOI: 10.1109/apmc46564.2019.9038260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Alibakhshikenari M, Virdee BS, See CH, Abd-Alhameed RA, Limiti E. High Performance On-Chip Array Antenna Based on Metasurface Feeding Structure for Terahertz Integrated Circuits. 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) 2019. [DOI: 10.1109/irmmw-thz.2019.8874127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Alibakhshikenari M, Singh BS, See CH, Abd-alhameed RA, Falcone F, Limiti E. Super-Wide Impedance Bandwidth Planar Antenna Based on Metamaterial Concept for Microwave and Millimetre-Wave Applications.. [DOI: 10.20944/preprints201904.0220.v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
A novel configuration for a super-wide impedance planar antenna is presented based on a 2 × 2 microstrip patch antenna (MPA). The antenna comprises a symmetrical arrangement of four-square patches that are interconnected to each other with cross-shaped high impedance microstrip lines. The antenna array is exciting through a single feedline connected to one of the patches. The proposed antenna array configuration overcomes the main drawback of conventional MPA of narrow bandwidth that is typically <5%. The antenna exhibits a super-wide frequency bandwidth from 20 GHz to 120 GHz for S11<−15 dB, which corresponds to a fractional bandwidth of 142.85%. The antenna’s performance of bandwidth, impedance match, and radiation gain were enhanced by etching slots on the patches. The slotted microstrip patch essentially acts like a left-handed capacitance to exhibit metamaterial properties over a given frequency range. With the inclusion of the slot the maximum radiation gain and efficiency of the MPA have increased to 15.11 dBi and 85.79% at 80 GHz, which show an improvement of 2.58 dBi and 12.54%, respectively. The dimension of each patch antenna is 30 × 30 mm2. The results show that the proposed MPA is useful for various communications existing and emerging systems such as ultra-wideband (UWB) communications, RFID systems, massive multiple-output multiple-input (MIMO) for 5G, and radar systems.
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Alibakhshikenari M, Virdee BS, Parchin NO, Shukla P, Quazzane K, See CH, Abd-Alhameed R, Falcone F, Limiti E. Isolation enhancement of densely packed array antennas with periodic MTM-photonic bandgap for SAR and MIMO systems. IET Microwaves, Antennas & Propagation 2019. [DOI: 10.1049/iet-map.2018.5747] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Alibakhshikenari M, Virdee BS, Khalily M, See CH, Abd-Alharueed R, Falcone F, Limiti E. A New Study to Suppress Mutual-Coupling Between Waveguide Slot Array Antennas Based on Metasurface Bulkhead for MIMO Systems. 2018 Asia-Pacific Microwave Conference (APMC) 2018. [DOI: 10.23919/apmc.2018.8617287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Alibakhshikenari M, Virdee BS, See CH, Abd-Alhameed R, Falcone F, Andujar A, Anguera J, Limiti E. Study on Antenna Mutual Coupling Suppression Using Integrated Metasurface Isolator for SAR and MIMO Applications. 2018 15th European Radar Conference (EuRAD) 2018. [DOI: 10.23919/eurad.2018.8546596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Alibakhshikenari M, Virdee BS, See ICH, Abd-Alhameed R, Falcone F, Andujar A, Anguera J, Limiti E. Study on Antenna Mutual Coupling Suppression Using Integrated Metasurface Isolator for SAR and MIMO Applications. 2018 48th European Microwave Conference (EuMC) 2018. [DOI: 10.23919/eumc.2018.8541373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Alibakhshikenari M, Virdee BS, See CH, Abd-alhameed R, Falcone F, Limiti E. Antenna Mutual Coupling Suppression Over Wideband Using Embedded Periphery Slot for Antenna Arrays.. [DOI: 10.20944/preprints201808.0359.v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
This paper presents a new approach to suppress interference between neighbouring radiating elements resulting from surface wave currents. The proposed technique will enable the realization of low-profile implementation of highly dense antenna configuration necessary in SAR and MIMO communication systems. Unlike other conventional techniques of mutual coupling suppression where decoupling slab is located between the radiating antennas the proposed technique is simpler and only requires embedding linear slots near the periphery of the patch. Attributes of this technique are (i) significant improvement in the maximum isolation between the adjacent antennas by 26.7 dB in X-band, & >15 dB in Ku and K-bands; (ii) reduction in edge-to-edge gap between antennas to 10 mm (0.37λ); and (iii) improvement in gain by >40% over certain angular directions, which varies between 4.5 dBi to 8.2 dBi. The proposed technique is simple to implement at low-cost.
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