Axial ratio improvement of an Archimedean spiral antenna over a radial AMC reflector

被引：8

作者：

Grelier, M. ^{[1
,2
]}

Djoma, C. ^{[1
,2
]}

Jousset, M. ^{[2
]}

Mallegol, S. ^{[2
]}

Lepage, A. C. ^{[1
]}

Begaud, X. ^{[1
]}

机构：

[1] Telecom ParisTech, LTCI CNRS UMR 5141, Inst Mines Telecom, F-75634 Paris 13, France

[2] Thales Syst Aeroportes, F-29238 Brest 3, France

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2012年 / 109卷 / 04期

关键词：

Reflection - Bandwidth - Microwave antennas - Antenna reflectors;

D O I：

10.1007/s00339-012-7401-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents a method to improve the circular polarization of an Archimedean spiral antenna placed over a radial Artificial Magnetic Conductor (AMC). Results have been compared with the same radiating element over a more classical AMC reflector. A prototype of an Archimedean two-wire spiral antenna has been built to operate from 0.5 GHz to 6 GHz. Measurement results with this radial AMC give a relative bandwidth of 79 %, in which the broadside RHCP gain is improved. In this bandwidth the axial ratio of Archimedean spiral antenna placed over a radial AMC is less than 2 dB whereas it is higher than 3 dB with a classical cartesian shape of AMC reflector.

引用

页码：1081 / 1086

页数：6

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