Cavity-Backed Circularly Polarized Cross-Dipole Phased Arrays

被引：13
|
作者：
Zhang, Ling-Kai [1 ]
Wang, Yue-Xian [1 ]
Li, Jian-Ying [1 ]
Feng, Yao [1 ]
Zhang, Wei [2 ]
机构：
[1] Northwestern Polytech Univ, Sch Elect & Informat, Xian 710129, Peoples R China
[2] Northwest Univ, Sch Informat Sci & Technol, Kirkland, WA 98033 USA
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2021年 / 20卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Cavity-backed (CB); circularly polarized (CP); cross-dipole antenna; Ku-band; phased array; WIDE-BAND; ANTENNA;
D O I：
10.1109/LAWP.2021.3092148
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 letter, a 16 x 16 Ku-band circularly polarized phased array is proposed. The antenna element comprises a cross dipole, a metal cavity, and a threaded SMP connector. The metal cavity makes the gain of the antenna increased and the mutual coupling between the array elements is reduced, thus ensuring good impedance matching and axis ratio (AR) during the two-dimensional beam scanning. The mutual coupling of the center element at center frequency is -26.6 dB when the cavity is added. The proposed phased array achieves the impedance bandwidth (vertical bar S-11 vertical bar <= -10 dB) of 10.1% (13.1-14.5GHz) when scanning +/- 40 degrees in the xz plane and yz plane. AR of themain lobe is less than 2 dB in the total scanning range. The gain fluctuation is less than 3 dB during scanning. This letter presents the measurement and simulation results, verifying that the phased array has good performance.
引用
收藏
页码：1656 / 1660
页数：5
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