Dual-Frequency Dual-Polarized Shared-Aperture Filtering Waveguide Slot Antenna Array for Satellite Communications

IF 4.6 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-07-31 DOI:10.1109/LAWP.2026.3719289

Qi Zheng;Judao Wang;Jinyu Ma;Linghui Kong;Yan Qu;Kai Zhang;Xiaoyan Pang;Zhen-Xing Xia;Xue-Xia Yang

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Abstract

Multiband, multipolarization, anti-interference, and high efficiency antenna array have emerged for satellite communications. In this letter, a dual-frequency dual-polarized shared-aperture filtering waveguide slot antenna array is proposed for X -band satellite communications. The array consists of 4 × 12 vertically polarized (VP) and 4 × 16 circularly polarized (CP) subarrays working at two closely frequency bands with a high signal interference suppression. First of all, the lower band VP antenna element is a longitudinal slot located on the top of a ridged waveguide, whereas the higher band CP antenna element consists of a pair of tilted and longitudinal slots grooved on the edge and top of a second U-shaped ridged waveguide. The CP is obtained by independently controlling the tilted and longitudinal slots. Moreover, the ridged waveguides integrated with filtering capability are proposed to suppress the signal interference and reduce the mutual coupling between the two closely bands. The measured results show that the proposed array has the advantages of dual-band, VP and CP polarizations, low sidelobe levels, low cross-polarization levels, stable gain variation, and low signal interference, which can be applied for highly integrated CP satellite communication and VP remote sensing applications.

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卫星通信用双频双极化共孔径滤波波导缝隙天线阵列

卫星通信中出现了多波段、多极化、抗干扰、高效的天线阵。本文提出了一种用于X波段卫星通信的双频双极化共孔径滤波波导缝隙天线阵列。该阵列由4 × 12垂直极化（VP）子阵列和4 × 16圆极化（CP）子阵列组成，工作在两个紧密的频段，具有很高的信号干扰抑制能力。首先，低频段VP天线单元是位于脊波导顶部的纵向槽，而高频段CP天线单元由位于第二个u型脊波导边缘和顶部的一对倾斜和纵向槽组成。通过对倾斜槽和纵向槽的独立控制来获得CP。此外，还提出了集成滤波功能的脊波导来抑制信号干扰，降低两个紧密波段之间的相互耦合。实测结果表明，该阵列具有双频、VP和CP极化、低副瓣电平、低交叉极化电平、增益变化稳定、信号干扰小等优点，可用于高集成度CP卫星通信和VP遥感应用。

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

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.