Dual-Band Circularly Polarized Annular-Ring Microstrip Antenna for GNSS Applications

被引：49
作者：
Zhang, Y. -Q. [1 ]
Li, X. [1 ]
Yang, L. [1 ]
Gong, S. -X. [1 ]
机构：
[1] Xidian Univ, Natl Key Lab Sci & Technol Antennas & Microwaves, Xian 710071, Peoples R China
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2013年 / 12卷
关键词：
Broadband feed network; circularly polarized (CP); coupling feed; dual-band patch antenna; Global Navigation Satellite System (GNSS);
D O I：
10.1109/LAWP.2013.2260521
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 dual-band circularly polarized antenna fed by four apertures that covers the bands of GPS (L1, L2, L5), Galileo (E5a, E5b, E1, E2, L1), and GLONASS (L1, L3) is introduced. A lotus-shaped aperture is added to optimize the coupling between the microstrip lines and the rings. Three wideband planar baluns are used to achieve good axial ratio (lower than 2.1 dB in both bands) and VSWR (41.2%). The measured results of the annular-ring microstrip antenna show good performance of a dual-band operation, and they confirm the validity of this design, which meets the requirement of Global Navigation Satellite System (GNSS) applications.
引用
收藏
页码：615 / 618
页数：4
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