Dual band low profile antenna for body centric communications with a split ring resonator

2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO) Pub Date : 2013-12-01 DOI:10.1109/IMWS-BIO.2013.6756228

Zhenguo Liu, Yong-xin Guo

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引用次数: 6

Abstract

A dual band low profile antenna for wireless body centric communications is presented in this paper. It is composed of a zeroth-order loop loaded periodically with mu-negative transmission line (MNG-TL) and a circular patch located in the center of loop. The MNG-TL loop based on the fundamental infinite wavelength property allows current along the loop to remain in phase and same magnitude so that a highly efficient and miniature loop antenna with omni-directional pattern in azimuth plane at low frequency band for on-body communications is generated. On the other hand, a unidirectional pattern in elevation plane at upper frequency band for off-body communications is also obtained by circular patch simultaneously. In order to improve the pattern in azimuth plane, a split ring resonator (SRR) element is used to direct the electromagnetic field propagation. By placing a single SRR at the near field of the loop in different location, the mechanic of function between SRR and loop is also presented.

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双波段低轮廓天线，用于身体中心通信，带有分裂环谐振器

提出了一种用于无线身体中心通信的双频段低轮廓天线。它由一个零阶环路和一个位于环路中心的圆形贴片组成，环路周期性地加载mu负传输线(MNG-TL)。基于基本无限波长特性的MNG-TL环路允许沿环路的电流保持相位和相同的幅度，从而在低频段产生具有方位平面全向方向图的高效微型环路天线，用于身体通信。另一方面，在离体通信的高频带仰角平面上，圆形贴片也同时获得了单向方向图。为了改善方位面方向图，采用了劈裂环谐振器(SRR)元件来引导电磁场的传播。通过在不同位置的环路近场放置单个SRR，给出了SRR与环路之间的作用机理。

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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来源期刊

2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)

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