Dielectric Loaded Impedance Matching for Wideband Implanted Antennas

被引：84

作者：

Dissanayake, Tharaka ^{[1
]}

Esselle, Karu P. ^{[2
]}

Yuce, Mehmet R. ^{[1
]}

机构：

[1] Univ Newcastle, Sch Elect Engn & Comp Sci, Callaghan, NSW 2308, Australia

[2] Macquarie Univ, Ctr Witeless Applicat, Sydney, NSW 2109, Australia

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2009年 / 57卷 / 10期

关键词：

Biomedical electronic; biomedical engineering; implanted device; ultra-wideband (UWB) antenna; TRANSIENT RADIATION; DESIGN;

D O I：

10.1109/TMTT.2009.2029664

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

in implanted biomedical devices, due to the presence of surrounding dissipative biological tissue, the antenna stirrers poor impedance matching. This causes degradation in the performance of a wideband or ultra-wideband (UWB) implanted device. Moreover, the electrical properties of tissue change front organ to organ, and possibly from time to time. In this paper, it is shown that loading of antennas with suitable insulators can deliver broadband matching across a range of dissipative medium properties. An impedance-matched UWB antenna designed to operate inside a lossy medium, which has varying electromagnetic properties within the range expected in biological tissues, is presented. The operating bandwidth of the proposed design is 3.5-4.5 GHz, which is an interference-free subset of the unlicensed UWB hand in the US. It is demonstrated that once the dielectric loading is applied, the conventional procedure For antenna design in free space can be followed. The proposed implantable small capsule-shaped slot antenna has been characterized using numerical simulations. Details of a proof-of-concept experiment are presented.

引用

页码：2480 / 2487

页数：8

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