Wideband Shared-Aperture Circularly Polarized Antenna With Large Frequency Ratio Based on Fabry-Perot Cavity

IF 1.1 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Microwave and Optical Technology Letters Pub Date : 2026-10-01 DOI:10.1002/mop.70797

Jin-Jin Lin, Zhi-Hong Tu, Yun Wang

引用次数: 0

Abstract

This letter presents a wideband shared-aperture circularly polarized antenna with a large frequency ratio. The wideband circularly polarized millimeter-wave Fabry-Perot cavity (FPC) antenna is composed of a 2 × 2 circularly polarized patch feeding array and a partially reflective surface (PRS). The PRS can also be excited orthogonally when used as a circularly polarized microwave patch antenna. Experiments show that the −10 dB impedance bandwidths of the antenna are 2.9–4.65 GHz and 24.6–32.8 GHz, respectively, and its 3 dB axial ratio bandwidths are 3.72–4.4 GHz and 25.2–27.2 GHz, respectively. Furthermore, the measured peak gains are 6.3 and 12.3 dBi, respectively, and the antenna's isolation exceeds 40 dB across the operating bands.

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基于法布里-珀罗腔的宽带大频率比共孔径圆极化天线

本文提出了一种大频率比的宽带共孔径圆极化天线。宽带圆极化毫米波法布里-珀罗腔（FPC）天线由2 × 2圆极化贴片馈电阵列和部分反射面（PRS）组成。当用作圆极化微波贴片天线时，也可以进行正交激励。实验结果表明，该天线−10 dB阻抗带宽分别为2.9 ~ 4.65 GHz和24.6 ~ 32.8 GHz， 3db轴比带宽分别为3.72 ~ 4.4 GHz和25.2 ~ 27.2 GHz。此外，测得的峰值增益分别为6.3和12.3 dBi，天线的隔离度在工作频带上超过40 dB。

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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来源期刊

Microwave and Optical Technology Letters 工程技术-工程：电子与电气

CiteScore

3.40

自引率

20.00%

发文量

371

审稿时长

4.3 months

期刊介绍： Microwave and Optical Technology Letters provides quick publication (3 to 6 month turnaround) of the most recent findings and achievements in high frequency technology, from RF to optical spectrum. The journal publishes original short papers and letters on theoretical, applied, and system results in the following areas. - RF, Microwave, and Millimeter Waves - Antennas and Propagation - Submillimeter-Wave and Infrared Technology - Optical Engineering All papers are subject to peer review before publication