A Dual-Band Dual-Circularly Polarized Transmit-Array Antenna and Its Application for Four-Color Scheme Multibeam Generation

IF 4.6 1区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-16 DOI:10.1109/TAP.2024.3456963

Xuanfeng Tong;Weimin Zeng;Yuan Li;Fan Wu;Zhi Hao Jiang;Ronan Sauleau;Wei Hong

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Abstract

A dual-band dual-circularly polarized (dual-CP) multibeam transmit-array (TA) system providing the four-color scheme at both the low- and high-frequency bands is proposed and demonstrated. The TA cells are in the form of antenna-filter-antenna (AFA) structures with reduced laminating complexity, behaving as transmissive half-wave plates. For the feeding source, a compact dual-band dual-CP array, based on a broadband stripline feeding network and four dual-band dual-linearly polarized (LP) aperture-coupled double-layered segmented patches, is designed and validated. The measured joint -10 dB impedance matching, 2-dB gain, and 3-dB axial ratio bandwidths are about 15.5% and 8.9% at the two bands, respectively, for the feeding source. The dual-band dual-CP TA and feed array are further integrated to form a TA antenna with four degrees of freedom of beamforming. Finally, two feed clusters, each containing four dual-band dual-CP feed arrays, and two dual-band dual-CP TAs—one operating at 18/28 GHz and the other working at 19.5/29.5 GHz, are integrated to produce a total of 32 beams for covering a certain area in a four-color scheme at both the low- and high-frequency bands. The dual-band dual-CP TA system is fabricated and characterized, showing a good agreement between the measured and simulated results. The demonstrated TA antenna system can be a promising candidate for point-to-multipoint communications, satellite communications, and so on.

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一种双波段双圆极化发射阵列天线及其在四色方案多波束发生中的应用

本文提出并演示了一种双波段双圆极化（dual-CP）多波束发射阵列（TA）系统，可在低频和高频段提供四色方案。发射阵列单元采用天线-滤波器-天线（AFA）结构形式，降低了叠层复杂性，表现为透射半波板。在馈电源方面，设计并验证了基于宽带带状馈电网络和四个双波段双线性极化（LP）孔径耦合双层分段式贴片的紧凑型双波段双 CP 阵列。对于馈电源，测得的联合 -10 dB 阻抗匹配、2 dB 增益和 3 dB 轴向比带宽在两个频段分别约为 15.5% 和 8.9%。双波段双 CP TA 和馈电阵列进一步集成，形成具有四个波束成形自由度的 TA 天线。最后，两个馈电集群（每个集群包含四个双频双 CP 馈电阵列）和两个双频双 CP TA（一个工作频率为 18/28 GHz，另一个工作频率为 19.5/29.5 GHz）被集成在一起，产生总共 32 个波束，以四色方案覆盖低频和高频段的一定区域。双频双 CP TA 系统的制造和特性分析表明，测量结果与模拟结果之间具有良好的一致性。所演示的 TA 天线系统有望用于点对多点通信、卫星通信等。

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 Transactions on Antennas and Propagation 工程技术-电信学

CiteScore

10.40

自引率

28.10%

发文量

968

审稿时长

4.7 months

期刊介绍： IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques