Huang Z, Wu H, Mahmoud SS, Fang Q. Design of a Novel Compact MICS Band PIFA Antenna for Implantable Biotelemetry Applications.
SENSORS (BASEL, SWITZERLAND) 2022;
22:8182. [PMID:
36365880 PMCID:
PMC9655306 DOI:
10.3390/s22218182]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 10/09/2022] [Accepted: 10/15/2022] [Indexed: 06/16/2023]
Abstract
An implantable stacked planar inverted-F antenna (PIFA) for biotelemetric communication in the 402-405 MHz Medical Implant Communications Service (MICS) frequency band is designed and fabricated. With the proposed PIFA structure, a slot on each radiating patch was embedded, resulting in a size reduction of 0.013 λ and a compact size of 10 × 10 × 1.905 mm3. Both in vitro and in vivo experiments verified the simulation performance with characteristics of -10 dB bandwidth of 29 MHz, radiation efficiency of 0.9%, and a maximum far-field gain of -18.8 dB. We calculated the safety power delivered to the antenna using the specific absorption rate (SAR) limitation standard. Compared to other implantable antennas for biotelemetry, this antenna performs comparably and has a smaller size. This design would further develop implantable medical devices that communicate in the MICS band.
Collapse