Cross-Band Mutual Coupling Reduction in Dual-Band Base-Station Antennas With a Novel Grid Frequency Selective Surface

被引：32
|
作者：
Zhu, Yufeng [1 ]
Chen, Yikai [1 ]
Yang, Shiwen [1 ]
机构：
[1] Univ Elect Sci & Technol China, Dept Microwave Engn, Chengdu 611731, Peoples R China
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2021年 / 69卷 / 12期
关键词：
Antenna arrays; Antennas; Frequency selective surfaces; Mutual coupling; Dual band; Metals; Surface impedance; Dual-band antenna; grid frequency selective surface (GFSS); shared-aperture antenna array; BROAD-BAND; SUPPRESSION; SCATTERING;
D O I：
10.1109/TAP.2021.3098514
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 communication, a grid frequency selective surface (GFSS) is developed for cross-band near-field mutual coupling suppression. The unit cell of the GFSS consists of a break metal strip and a parallel LC resonator. The GFSS realizes low-stop property at 1.7-2.4 GHz (B1 band) and high-pass property at 3.3-3.8 GHz (B2 band). The novel GFSS is applied in a 5G dual-band antenna array with one B1 band antenna and four B2 band antennas. The cross-band mutual coupling coefficients are reduced from -14 dB to lower than -35 dB at the B1 band. Meanwhile, the radiation patterns of the B2 band antenna element are not affected due to the nonscattering feature of the GFSS. The dual-band base-station antenna array prototype is fabricated and measured to demonstrate the effectiveness of the proposed design in cross-band mutual coupling reduction.
引用
收藏
页码：8991 / 8996
页数：6
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