基于间隙波导技术特征模理论的ka波段滤波天线设计

IF 3.7 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-02-13 DOI:10.1109/LAWP.2025.3541237

Xun Jiang;Shujun He;Tingting Zhang;Kexin Yang;Wenjie Feng;Yongrong Shi

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引用次数: 0

摘要

本文提出了一种基于缝隙波导（GWG）的ka波段滤波天线。首先，利用特征模理论（CMT）对带内增益平坦、带外抑制良好的滤波器天线进行了分析。其次，给出了具有四个金属化过孔的新型蘑菇胞的色散图。第三，添加基于高质量基板集成波导的谐振器，以及GWG馈线，以激发所需的模式。最后，出于集成和测量的考虑，设计了从GWG到微带线（MSL）和从MSL到耦合槽的过渡结构，得到了工作在Ka波段的滤波天线。测量结果表明，该滤波器天线的阻抗带宽范围为34.3 GHz ~ 36.9 GHz，带内增益约为8.5 dBi，低空区和高频空区带外抑制分别约为45 dB和32 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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Design of Ka-Band Filter-Antenna Based on Characteristic Mode Theory Using Gap Waveguide Technology

In this letter, a Ka-band filter-antenna based on gap waveguide (GWG) is proposed. First, a patch of the filter-antenna with a flat in-band gain and good out-of-band rejection, is analyzed using characteristic mode theory (CMT). Second, a dispersion diagram of a novel mushroom unit cell with four metalized vias is presented. Third, a resonator based on a substrate-integrated waveguide with high quality, along with a GWG feeding line, is added to excite the desired modes. Finally, for integration and measurement considerations, transition structures are designed from the GWG to the microstrip line (MSL) and from the MSL to the coupling slot, and the proposed filter-antenna worked at Ka band is obtained. The measurement results show that the impedance bandwidth of the proposed filter-antenna ranges from 34.3 GHz to 36.9 GHz and the in-band gain is about 8.5 dBi, while the out-of-band rejection levels at the low and high-frequency nulls are about 45 dB and 32 dB, respectively.

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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.