Wideband circularly polarized array antenna based on sequential phase feeding metasurfaces for 5G (sub-6G) applications

Shuqi Wang, Han Hao, Xia Ma, Houyuan Cheng and Xiaojun Huang

Journal of Electromagnetic Waves and Applications, 2023, vol. 37, issue 1, 15-24

Abstract: In this paper, a broadband circularly polarized array antenna is presented, which consists of four loop slot antennas based on metasurfaces. The antenna element is a loop slot antenna fed by a microstrip line. Cross slots are added to the loop slot to improve the antenna bandwidth, and four corner-cut square metasurfaces are loaded above it, thus generating circularly polarized radiation. The antenna adopts a sequential phase (SP) feed network to realize broadband characteristics. The antenna has been fabricated and experimented. The overall size of the antenna is 78 × 78 × 10.1 mm3 (approximately 1.22 λ0 × 1.22 λ0 × 0.15 λ0), the antenna array has a measured |S11|

Date: 2023
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DOI: 10.1080/09205071.2022.2110948

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