Wideband Circularly Polarized Microstrip Antenna With Wide Beamwidth

被引：58
|
作者：
Chen, Lei [1 ]
Zhang, Tian-Ling [1 ]
Wang, Chao [1 ]
Shi, Xiao-Wei [1 ]
机构：
[1] Xidian Univ, Natl Lab Sci & Technol Antennas & Microwaves, Xian 710071, Peoples R China
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2014年 / 13卷
基金：
中国国家自然科学基金;
关键词：
Circular polarization; semi-open metal cavity; wide beamwidth; wideband; SLOT ANTENNA;
D O I：
10.1109/LAWP.2014.2341241
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 wideband circularly polarized antenna for S-band satellite communications with wide beamwidth is presented. The wide impedance bandwidth is achieved by using the modified inverted-L feeds and stacked patches. The wide beamwidth is obtained by the semi-open metal cavity. A prototype of the antenna is implemented, and the measured bandwidth is 30.1% with the reflection coefficient <= -10 dB, axial ratio <= 3 dB, half-power beamwidth (HPBW) >= 100 degrees and gain >= 3 dBic. Experimental results show that the proposed antenna has good impedance matching, circular polarization, and wide beamwidth characteristics.
引用
收藏
页码：1577 / 1580
页数：4
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