Difference-Beam Operation in a Center-Fed Dual-Polarized Parallel-Plate Waveguide Slot Array Antenna

IF 0.3 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC IEICE Communications Express Pub Date : 2024-07-09 DOI:10.23919/comex.2024XBL0100

Huanqian Xiong;Jiro Hirokawa;Takashi Tomura

引用次数: 0

Abstract

This letter deals with the difference-beam operation in a centerfeed dual-polarized parallel-plate waveguide slot array antenna at 24.5GHz, which consists of two orthogonally arranged 20×19 arrays of radiating slot pairs. A center-feeding scheme is employed in this design. Each rectangular feeding waveguide, fed by a probe, can feed half of the radiating panel, enabling easy control of the phase difference. Experimental results show that the monopulse antenna array has a bandwidth of 12.8% for reflections below −10 dB while it produces the sum beams, and 13.3% to produce the difference beams. Port isolation between the sum mode and difference mode is above 15 dB within the working frequency band. The measured realized gain of the sum beam is 31.3 dBi at 24.5 GHz, and the measured null-depth is below −33.9 dB for both polarizations.

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中心馈电双极化平行板波导槽阵列天线中的差分波束工作原理

这封信讨论了中心馈电双极化平行板波导槽阵列天线在 24.5GHz 频率下的差分波束工作原理，该天线由两个正交排列的 20×19 辐射槽对阵列组成。该设计采用了中心馈电方案。每个由探针馈电的矩形馈电波导可馈电一半的辐射板，从而轻松控制相位差。实验结果表明，单脉冲天线阵列在产生和波束时，反射带宽为 12.8%，低于-10 dB；在产生差波束时，反射带宽为 13.3%。在工作频段内，和模式与差模式之间的端口隔离度高于 15 dB。在 24.5 GHz 时，和波束的实测增益为 31.3 dBi，两个极化的实测无效深度均低于 -33.9 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

IEICE Communications Express ENGINEERING, ELECTRICAL & ELECTRONIC-

自引率

33.30%

发文量

114