宽带CATR用紧密耦合偶极子发射阵列设计

2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2022-08-12 DOI:10.1109/ICMMT55580.2022.10022547

Yan Zhang, Chaochao Zhao, Tianyang Jia, Quan Shaohui, Shanwei Lü

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引用次数: 0

摘要

本文提出了一种基于紧密耦合偶极子的宽带发射阵列天线，用于CATR(紧凑型天线测试范围)。发射阵列天线由宽带馈电天线和宽带传输超表面组成。馈源是一种改进的超宽带维瓦尔第天线。宽带传输超表面由30×15单元组成，每个单元由紧密耦合的偶极子天线和平行金属线组成。将等效延迟距离的概念引入到发射阵列的设计中。为了验证设计，制作并测量了工作频率为3 ~ 9 GHz的原型机。模拟结果与实测结果吻合良好。测量结果表明，该天线在工作频段内具有稳定的辐射方向图。天线增益为13.9 ~ 22.2dB，孔径效率大于21%。基于其近场特性，这也有望用于CATR。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Design of Tightly-Coupled-Dipole Transmitarray for Broadband CATR Application

In this paper, a wideband transmitarray antenna based on tightly coupled dipole is proposed for CATR (compact antenna test range) application. The transmitarray antenna is composed of a wideband feed antenna and a wideband transmission metasurface. The feed is an improved ultrawide band Vivaldi antenna. The wideband transmission metasurface consists of 30×15 cells, each of which consists of a tightly coupled dipole antenna and parallel metal lines. The concept of equivalent delay distance is introduced to design the transmitarray. To validate the design, a prototype operating from 3 to 9 GHz are fabricated and measured. Good agreement between simulated and measured results is observed. The measured results show that the antenna has a stable radiation pattern in the operating frequency band. The antenna gain is from 13.9dB to 22.2dB, and the aperture efficiency is greater than 21%. This can also hopefully be used for CATR based on its near-field properties.

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2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)

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