Compact Hybrid Choke Rings for Dual-Band Circularly Polarized GPS Antenna

被引：5
|
作者：
Sun, Mengmeng [1 ]
Qian, Jingyi [1 ]
Bai, Xudong [2 ]
Zhou, Liguo [2 ]
Lv, Yanting [1 ]
Kong, Fanwei [1 ]
Zhu, Weiren [3 ]
Jin, Ronghong [3 ]
机构：
[1] Shanghai Aerosp Elect Co Ltd, Res & Dev Ctr, Shanghai 201821, Peoples R China
[2] Northwestern Polytech Univ, Sch Microelect, Suzhou 215400, Peoples R China
[3] Shanghai Jiao Tong Univ, Dept Elect Engn, Shanghai 200240, Peoples R China
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2023年 / 22卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Inductors; Antenna measurements; Antennas; Global Positioning System; Dual band; Frequency measurement; Antenna radiation patterns; Center-fed; choke rings; circularly polarized; GNSS ANTENNA; MULTIPATH; SURFACE; SYSTEM;
D O I：
10.1109/LAWP.2022.3195204
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：
This letter presents the compact hybrid choke rings for the dual-band circularly polarized global positioning system (GPS) antenna, in order to suppress the surface wave propagation and reduce the back lobe levels. The designed dual-band circularly polarized antenna is center-fed and composed of two radiation patches. The novel compact hybrid choke rings are introduced to reduce the radiation back lobes and improve the front to back ratio effectively. The measured results show that the return loss of the antenna is greater than 10 dB and the bandwidth covers GPS L2 from 1.168 to 1.238 GHz and GPS L1 from 1.543 to 1.599 GHz. In the working bands, the front to back ratio of the proposed antenna is greater than 30 dB.
引用
收藏
页码：9 / 13
页数：5
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