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

IF 0.8 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Frequenz Pub Date : 2023-08-25 DOI:10.1515/freq-2023-0023

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

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Abstract

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.

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一种基于移相表面的高增益双波束折叠发射反射阵列天线

摘要本文基于共孔径法设计了一种高增益双波束折叠发射反射阵列天线。它由顶部发射反射阵列、底部发射阵列和位于底部发射阵列中心的馈电喇叭组成。提出了一种相移表面作为传输单元，该传输单元能够传输入射波，同时提供足够的传输相移。通过增加偏振栅来实现反射功能，将设计的透射晶胞改进为透射反射晶胞。底部发射阵列由发射单元构成。顶部发射反射阵列由发射反射晶胞和垂直于晶胞的偏振栅格组成。x偏振波透射通过顶部透射反射阵列，并在正向上形成笔形光束。此外，y偏振波被顶部发射反射阵列反射，并通过底部发射阵列发射，以在向后方向上形成笔形光束。在10GHz下，发射光束和反射光束的测试实现增益分别为19.87dBi和23.95dBi，孔径效率分别为48.27%和30.88%。它外形小巧，易于制造，在导航和雷达通信方面具有广阔的应用前景。

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来源期刊

Frequenz 工程技术-工程：电子与电气

CiteScore

2.40

自引率

18.20%

发文量

审稿时长

3 months

期刊介绍： Frequenz is one of the leading scientific and technological journals covering all aspects of RF-, Microwave-, and THz-Engineering. It is a peer-reviewed, bi-monthly published journal. Frequenz was first published in 1947 with a circulation of 7000 copies, focusing on telecommunications. Today, the major objective of Frequenz is to highlight current research activities and development efforts in RF-, Microwave-, and THz-Engineering throughout a wide frequency spectrum ranging from radio via microwave up to THz frequencies. RF-, Microwave-, and THz-Engineering is a very active area of Research & Development as well as of Applications in a wide variety of fields. It has been the key to enabling technologies responsible for phenomenal growth of satellite broadcasting, wireless communications, satellite and terrestrial mobile communications and navigation, high-speed THz communication systems. It will open up new technologies in communications, radar, remote sensing and imaging, in identification and localization as well as in sensors, e.g. for wireless industrial process and environmental monitoring as well as for biomedical sensing.