A Miniaturized Circularly-Polarized Antenna for In-Body Wireless Communications

被引：12

作者：

Fan, Yi ^{[1
]}

Liu, Xiongying ^{[2
]}

Li, Jiming ^{[2
]}

Chang, Tianhai ^{[2
]}

机构：

[1] Guangdong Polytech Normal Univ, Sch Elect & Informat, Guangzhou 510665, Guangdong, Peoples R China

[2] South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510641, Guangdong, Peoples R China

来源：

MICROMACHINES | 2019年 / 10卷 / 01期

基金：

中国国家自然科学基金;

关键词：

circular polarization; implantable antenna; reactive loading; slow wave effect; BAND IMPLANTABLE ANTENNA; DESIGN; TELEMETRY; TRANSMISSION; ENHANCEMENT; MICS;

D O I：

10.3390/mi10010070

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel miniaturized single-fed circularly-polarized (CP) microstrip patch antenna operating in the Industrial, Scientific, Medical (ISM) band of 2.40-2.48 GHz, is comprehensively proposed for implantable wireless communications. By employing reactive loading in the arrow-shaped slotted patch to form slow wave effect and embedding V-shaped slots into patch to lengthen the current path, the proposed implantable antenna is minimized with the overall dimensions of 9.2 mm x 9.2 mm x 1.27 mm. The radiation patterns of the proposed antenna illustrate the performance of left-handed circular polarization. The simulated results show that an impedance bandwidth of 7.2% (2.39-2.57 GHz) and an axial ratio bandwidth of 3.7% (2.39-2.48 GHz) at the ISM band are achieved, respectively. Ex vivo measured results are in good agreement with the corresponding simulated ones.

引用

页数：11

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