On the Study of the Near-Fields of Electric and Magnetic Small Antennas in Lossy Media

被引：51

作者：

Manteghi, Majid ^{[1
]}

Ahmed, Ali ^{[1
]}

Ibraheem, Younis ^{[1
]}

机构：

[1] Virginia Polytech Inst & State Univ, Elect & Comp Engn Dept, Blacksburg, VA 24060 USA

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2014年 / 62卷 / 12期

关键词：

Antenna theory; lossy systems; near-field loss; small antenna; COUPLED LOOP ANTENNA; FUNDAMENTAL LIMITS;

D O I：

10.1109/TAP.2014.2359499

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 this communication, the near-field radiation characteristics of electric and magnetic antennas when surrounded by a lossy dielectric medium are described. This study is relevant for cases such as implanted antennas, submarine or underground communications where the antenna's near field consists of lossy dielectric media such as human tissues, minerals or saline water. Theoretical results for both types of small antennas are presented and expressions to show the differences in stored energy and radiated power in the radian sphere around the antenna are formulated. It is found that magnetic antennas give much better performance when surrounded by a lossy dielectric.

引用

页码：6491 / 6495

页数：5

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