A high-gain dual-beam folded transmit-reflect-array antenna based on phase-shifting surface

Min Zhang; Baiqing Tang; Xin Li; Peng Jiang; Wei Hu; Wen Jiang; Steven Gao

doi:10.1515/freq-2023-0023

Artikel

A high-gain dual-beam folded transmit-reflect-array antenna based on phase-shifting surface

Min Zhang , Baiqing Tang , Xin Li , Peng Jiang , Wei Hu , Wen Jiang und Steven Gao

Veröffentlicht/Copyright: 25. August 2023

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Abstract

In this paper, a high-gain dual-beam folded transmit-reflect-array antenna is designed based on the shared aperture method. It consists of the top transmit-reflect-array, the bottom transmitarray, and the feed horn located at the center of the bottom transmitarray. A phase-shifting surface is proposed as the transmission unit cell capable of transmitting incident waves while providing adequate transmission phase shift. The designed transmission unit cell is improved into the transmit-reflect unit cell by adding polarization grids to realize the reflection function. The bottom transmitarray is constructed by transmission unit cells. The top transmit-reflect-array is composed of transmit-reflect unit cells and polarization grids vertical to the unit cell. The x-polarized wave transmits through the top transmit-reflect-array and forms a pencil beam in the forward direction. In addition, the y-polarized wave is reflected by the top transmit-reflect-array and transmits through the bottom transmitarray to form a pencil beam in the backward direction. The tested realized gains of the transmitted beam and reflected beam at 10 GHz are 19.87 dBi with an aperture efficiency of 48.27 % and 23.95 dBi with an aperture efficiency of 30.88 %, respectively. With its low profile and ease of manufacture, it has great prospects for navigation and radar communication.

Keywords: high-gain; dual-beam; transmit-reflect-array; phase-shifting surface; shared aperture

Corresponding author: Baiqing Tang, National Key Laboratory of Antennas and Microwave Technology, Xidian University, Xi’an, 710071, China, E-mail: 21021210769@stu.xidian.edu.cn

Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
Research funding: None declared.

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Received: 2023-01-20

Accepted: 2023-08-09

Published Online: 2023-08-25

Published in Print: 2023-12-15

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https://doi.org/10.1515/freq-2023-0023

Schlagwörter für diesen Artikel

high-gain; dual-beam; transmit-reflect-array; phase-shifting surface; shared aperture