Design and Synthesis of a High-Selectivity and Wide Stopband Suppression Filtering Antenna With Symmetric Coupling Structure

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

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-11-27 DOI:10.1109/LAWP.2024.3506626

Xinwei Chen;Li Zhao;Runbo Ma;Jinrong Su;Wenmei Zhang

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引用次数: 0

Abstract

A fourth-order high-selectivity and wide stopband suppression filtering antenna with a symmetric coupling structure is presented. By incorporating resonant units with different structures, harmonics are effectively suppressed due to the resonators’ identical fundamental modes and distinct second-order harmonics. By introducing a cross-coupling path, two controllable radiation nulls are achieved, further enhancing the antenna's selectivity. Additionally, the symmetric coupling structure is employed to minimize cross-polarization. Finally, the theory of coupling matrix is utilized in the synthesis of the filtering antenna, and the relevant physical parameters are obtained. The results demonstrate that the proposed filtering antenna exhibits a bandwidth of 2.40 GHz to 2.66 GHz for |S₁₁| < −10 dB, a peak gain of 6.1 dBi, and two radiation nulls at 1.98 GHz and 3.12 GHz, resulting in enhanced selectivity with suppression levels exceeding 37.5 dB and cross-polarization levels below −38.1 dB.

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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.