Theoretical and experimental study of a cavity-backed annular-slot antenna

被引：20

作者：

Nikolic, N ^{[1
]}

Kot, JS ^{[1
]}

Bird, TS ^{[1
]}

机构：

[1] CSIRO, Epping, NSW 2121, Australia

来源：

IEE PROCEEDINGS-MICROWAVES ANTENNAS AND PROPAGATION | 1997年 / 144卷 / 05期

关键词：

antennas; annular-slot antennas; analysis; integration; cavity-backed ring-slot antennas;

D O I：

10.1049/ip-map:19971188

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：

A simple and accurate analysis of an annular-slot antenna backed by an inhomogeneously filled cavity is described. The analysis is based on a magnetic-field integral equation, which is solved approximately using a variational formulation. The results obtained from the analysis are compared with experimental measurements on a 5 GHz annular-slot antenna fabricated on a Duroid 5880 substrate. It is found that only three terms of a series expansion are needed for an accurate solution. Measured results for input impedance and far-field radiation patterns for an annular slot backed by different-sized cavities are presented.

引用

页码：337 / 340

页数：4

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