Circularly Polarized Implantable Antenna With Improved Impedance Matching
| Autor: | Zhao-Jun Chu, Shuo Liu, Jin-Peng Xu, Xiao-Wei Zhu, Lijie Xu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Patch antenna Acoustics Bandwidth (signal processing) Impedance matching 020206 networking & telecommunications 02 engineering and technology Input impedance Lossy compression 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Electrical impedance Working environment Circular polarization |
| Zdroj: | IEEE Antennas and Wireless Propagation Letters. 19:876-880 |
| ISSN: | 1548-5757 1536-1225 |
| DOI: | 10.1109/lawp.2020.2983216 |
| Popis: | This letter proposes a circularly polarized patch antenna with a compact volume of 91.9 mm3 for implantable applications. Foremost, the input impedance of patch antenna with reduced ground inside lossy muscle tissue is analyzed. Then following the traditional way of realizing circular polarization (CP) performance, crossed slots are introduced into the patch center. However, as the working environment is lossy tissue rather than traditional air, additional LC elements are needed to meet the impedance matching of 50 Ω. Thus, besides crossed slots in the center, arc-shaped slots and shorting pins are loaded on the antenna edge. Simulated results show that a CP bandwidth of 18.3% is obtained, proving the antenna is suitable for biomedical devices. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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