Wideband Circularly Polarized Square Slot Array Fed by Slotted Waveguide for Satellite Communication

被引：2
|
作者：
Wang, Min [1 ]
Hu, Lei [1 ]
Chen, Jingjing [1 ]
Qi, Shishan [1 ]
Wu, Wen [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Minist Key Lab JGMT, Nanjing 210094, Jiangsu, Peoples R China
来源：
PROGRESS IN ELECTROMAGNETICS RESEARCH LETTERS | 2016年 / 61卷
基金：
中国国家自然科学基金;
关键词：
D O I：
10.2528/PIERL16030603
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 wideband circularly polarized (CP) slot array with high radiation efficiency is proposed. The cavity-backed square slots are designed to achieve wideband CP radiation with a unidirectional pattern. The slotted waveguide is adopted to feed the array with high efficiency. The square slot, cavity and feeding slot in the waveguide can be viewed as a radiating element. A CP slot array can be conveniently designed as traditional waveguide slot arrays, once the element admittance characteristic is determined. A 1-by-8 CP array operating at 12.5GHz has been developed. Measured impedance bandwidth of 6.9%, axial-ratio (AR) bandwidth of 8.8% and a gain of 15.4 dBi have been achieved. This array can be conveniently expanded to a larger wideband CP array with a higher gain, which is preferred for the specific satellite communication applications.
引用
收藏
页码：111 / 118
页数：8
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