平面植入式天线在ISM波段的辐射效率

2014 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS) Pub Date : 2014-06-09 DOI:10.1109/BIOWIRELESS.2014.6827724

M. Tofighi, Shi-Min Huang

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引用次数: 6

摘要

关于可植入天线的性能，大多数关注集中在反射系数(S11相对于50 Ω)、带宽和远场辐射方向图上，而在植入设计过程中对辐射效率的研究很少。本文分析了2.4 GHz ISM频段内嵌入肌肉的两种槽型(环形和弯曲)和两种条形(环形和弯曲)PIFA天线。结果表明，槽型在辐射效率方面具有优越的性能。此外，通过远离共振(主要是导纳是电感的地方)来提高辐射效率。根据天线及其谐振点的选择，辐射效率可能变化超过一个数量级或更多，这一事实值得进一步注意。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Radiation efficiency of planar implantable antennas at ISM band

Most attentions regarding the performance of implantable antennas have been paid to the reflection coefficient (S11 with respect to 50 Ω), bandwidth, and far-field radiation pattern, while little effort has been dedicated to investigate the radiation efficiency during the implant design process. Analysis of two slot-type (annular and meandered) and two strip-type (ring and meandered PIFA) antennas embedded in muscle is presented in this paper at 2.4 GHz ISM band. It reveals that the slot types have superior performance in terms of their radiation efficiency. Also, the radiation efficiency is improved by operating away from the resonance, mostly where the admittance is inductive. The radiation efficiency may vary over an order of magnitude or more depending on the choice of the antenna and its resonance point, a fact that deserves further attention.

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来源期刊

2014 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)

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