A Circularly Polarized Antenna With Wide Axial Ratio Beamwidth

被引：155

作者：

Mak, Ka Ming ^{[1
]}

Luk, Kwai Man ^{[1
]}

机构：

[1] City Univ Hong Kong, Dept Elect Engn, Kowloon Tong 111, Hong Kong, Peoples R China

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2009年 / 57卷 / 10期

关键词：

Antenna radiation patterns; antennas; circular polarization; magnetic dipoles; MICROSTRIP ANTENNA;

D O I：

10.1109/TAP.2009.2029370

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 novel circularly polarized (CP) antenna with wide angular coverage is presented. The proposed antenna is formed by two bowtie patch antennas and two electric dipoles. It can achieve an impedance bandwidth (SWR < 1.6) of 41% and a 3-dB axial ratio bandwidth of 33%. For this design, very stable and symmetrical radiation patterns are obtained. In the axial ratio passband, the 3-dB beamwidth is 85 degrees +/- 2 degrees with a gain of 6.3 dBi +/- 0.3 dBi. The cross polarization is lower than -15 dB over a wide range of angles. For the entire half-power beamwidth, the axial ratio can be kept below 3 dB.

引用

页码：3309 / 3312

页数：4

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