Low-Profile Wideband High-Gain and Low-RCS Circularly Polarized Array Using Checkerboard Polarization Rotators

被引：1
|
作者：
Zheng, Qi [1 ]
Guo, Chenjiang [1 ]
Ding, Jun [1 ]
Vandenbosch, Guy A. E. [2 ]
机构：
[1] Northwestern Polytech Univ, Sch Elect & Informat, Xian, Peoples R China
[2] Katholieke Univ Leuven, Dept Elect Engn, Leuven, Belgium
来源：
2020 INTERNATIONAL WORKSHOP ON ANTENNA TECHNOLOGY (IWAT) | 2020年
关键词：
Circular polarization; antenna array; polarization rotators; checkerboard arrangement; radar cross section (RCS); BROAD-BAND; CONVERSION; ANTENNA;
D O I：
10.1109/iWAT48004.2020.1570613994
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：
In this paper, a circularly polarized (CP) array based on checkerboard polarization rotators (PRs) with wideband and low radar cross section (RCS) is presented. The proposed array is formed by 2 x 2 CP element antennas fed with a sequential feeding network. On the one hand, the CP array has a wide axial ratio (AR) bandwidth of 22.5% (AR <= 3 dB), an impedance bandwidth of 37.3% (S11 <= -10 dB), and a 3 -dB gain bandwidth of 18.4% with a maximum of 13 dBic. On the other hand, the checkerboard arrangement of the PRs generates both an in-band and a partial out-band RCS reduction under normal incidence for both x- and y-polarizations.
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页数：3
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