Bandwidth enhancement and size reduction of an implantable PIFA antenna for biotelemetry devices

✍ Scribed by Wen-Chung Liu; Ssu-Hung Chen; Chao-Ming Wu

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 156 KB
• Volume: 51
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.24142

✦ Synopsis

Abstract

By means of embedding hook‐shaped slots at the edges of the radiating patches for a stacked planar inverted‐F antenna (PIFA), functions of bandwidth enhancement and size reduction can be achieved for suitable use in implantable biotelemetry devices. The designed antenna with overall size of only 8 × 8 × 1.9 mm^3^ provides a monopole‐like radiation pattern, a radiation efficiency of 0.55%, and a wide −10 dB impedance bandwidth of 122 MHz covering the 402–405 MHz medical‐implant‐communication‐service (MICS) frequency band. Comparing with the reported most compact antennas, the proposed design obtains not only 144% wider bandwidth but also 36% more compact structure size. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 755–757, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24142