C/X Dual-Band Circularly Polarized Shared-Aperture Antenna

被引：18
作者：
Ji, Shuosheng [1 ]
Dong, Yuandan [1 ]
Wen, Sichao [1 ]
Fan, Yong [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 611731, Peoples R China
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2021年 / 20卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Antennas; Aperture antennas; Slot antennas; Patch antennas; C-band; Antenna radiation patterns; Antenna measurements; Circular polarization; dual-band antenna; high aperture reuse efficiency; shared-aperture antenna; ARRAY;
D O I：
10.1109/LAWP.2021.3110529
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 dual-band circularly polarized (CP) shared-aperture antenna is proposed in this letter. The overall structure consists of a substrate-integrated waveguide (SIW) slot antenna working in the X-band, which also serves as the top patch of a C-band microstrip-like antenna. The SIW slot antenna achieves CP radiation by etching a circular slot on the top surface of a dual-mode SIW cavity. The patch antenna realizes CP radiation by loading two pairs of asymmetric shorting vias. With this design method, the proposed antenna can achieve dual-band CP operation and high aperture reuse efficiency. Besides, the feeding pin of the SIW slot antenna inserts through one of the asymmetric shorting vias, that is, the shorting vias serves as both perturbations for the C-band operation and a feeding path for the X-band operation. This new feeding scheme can prevent signal crosstalk between the two bands.
引用
收藏
页码：2334 / 2338
页数：5
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