High gain and circularly polarized substrate integrated waveguide cavity antenna array based on metasurface

doi:10.1088/1674-1056/ac6b22

中国物理B ›› 2023, Vol. 32 ›› Issue (1): 14101-014101.doi: 10.1088/1674-1056/ac6b22

High gain and circularly polarized substrate integrated waveguide cavity antenna array based on metasurface

Hao Bai(白昊), Guang-Ming Wang(王光明)^†, and Xiao-Jun Zou(邹晓鋆)

Air and Missile Defend College, Air Force Engineering University of China, Xi'an 710051, China

收稿日期:2022-02-11 修回日期:2022-04-24 接受日期:2022-04-28 出版日期:2022-12-08 发布日期:2022-12-27
通讯作者: Guang-Ming Wang E-mail:wgming01@sina.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61871394).

High gain and circularly polarized substrate integrated waveguide cavity antenna array based on metasurface

Hao Bai(白昊), Guang-Ming Wang(王光明)^†, and Xiao-Jun Zou(邹晓鋆)

Air and Missile Defend College, Air Force Engineering University of China, Xi'an 710051, China

Received:2022-02-11 Revised:2022-04-24 Accepted:2022-04-28 Online:2022-12-08 Published:2022-12-27
Contact: Guang-Ming Wang E-mail:wgming01@sina.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61871394).

摘要/Abstract

摘要： Two substrate integrated waveguide (SIW) cavity antenna arrays based on metasurface are proposed in this paper. By rotating the metasurface element, circularly polarized and high gain antennas are achieved respectively. Firstly, multi-mode resonance theory is employed to broaden the bandwidth of the slot antenna. And then, an SIW cavity composed of 4×4 cornercut elements is added on the top of the slot antenna to achieve the circular polarization and improve the front-to-back ratio. Thirdly, the metasurface elements are sequentially rotated and a high gain antenna with 2-dBi enhancement on average in the operation band is obtained. Based on the two antenna units, two 2×2 antenna arrays are designed. The circularly polarized and high gain antenna arrays are both fabricated to verify the correctness. Furthermore, the novel wideband phase shifter is employed in the circularly polarized antenna to obtain an operating bandwidth of 38% (4.05 GHz-5.95 GHz) and AR bandwidth of 24.9% (4.4 GHz-5.65 GHz). The bandwidth of the high gain antenna can reach 42.7% (3.95 GHz-6.1 GHz) and with the gain enhancement of 2 dBi compared with that of the circularly polarized antenna. The gain remains steady in most of operating band within a variation of 1 dBi. It is remarkable that the rotating of the metasurface element has a great influence on the antenna performance, which provides a new explication for the multi-function antenna design.

关键词: substrate integrated waveguide (SIW), cavity antenna, metasurface, high gain, circularly polarized

Abstract: Two substrate integrated waveguide (SIW) cavity antenna arrays based on metasurface are proposed in this paper. By rotating the metasurface element, circularly polarized and high gain antennas are achieved respectively. Firstly, multi-mode resonance theory is employed to broaden the bandwidth of the slot antenna. And then, an SIW cavity composed of 4×4 cornercut elements is added on the top of the slot antenna to achieve the circular polarization and improve the front-to-back ratio. Thirdly, the metasurface elements are sequentially rotated and a high gain antenna with 2-dBi enhancement on average in the operation band is obtained. Based on the two antenna units, two 2×2 antenna arrays are designed. The circularly polarized and high gain antenna arrays are both fabricated to verify the correctness. Furthermore, the novel wideband phase shifter is employed in the circularly polarized antenna to obtain an operating bandwidth of 38% (4.05 GHz-5.95 GHz) and AR bandwidth of 24.9% (4.4 GHz-5.65 GHz). The bandwidth of the high gain antenna can reach 42.7% (3.95 GHz-6.1 GHz) and with the gain enhancement of 2 dBi compared with that of the circularly polarized antenna. The gain remains steady in most of operating band within a variation of 1 dBi. It is remarkable that the rotating of the metasurface element has a great influence on the antenna performance, which provides a new explication for the multi-function antenna design.

Key words: substrate integrated waveguide (SIW), cavity antenna, metasurface, high gain, circularly polarized

中图分类号: (Electromagnetic wave propagation; radiowave propagation)

41.20.Jb

73.20.Mf (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))

Hao Bai(白昊), Guang-Ming Wang(王光明), and Xiao-Jun Zou(邹晓鋆). High gain and circularly polarized substrate integrated waveguide cavity antenna array based on metasurface[J]. 中国物理B, 2023, 32(1): 14101-014101.

Hao Bai(白昊), Guang-Ming Wang(王光明), and Xiao-Jun Zou(邹晓鋆). High gain and circularly polarized substrate integrated waveguide cavity antenna array based on metasurface[J]. Chin. Phys. B, 2023, 32(1): 14101-014101.

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High gain and circularly polarized substrate integrated waveguide cavity antenna array based on metasurface

High gain and circularly polarized substrate integrated waveguide cavity antenna array based on metasurface

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