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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2025-09-09
Single-Cavity Triple-Mode Bandpass Filter Based on a Novel Combined-Type Rectangular Patch Resonator
By
Yaoran Yue,

    Dr. Yaoran Yue

    Sichuan University-Pittsburgh Institute

    Sichuan University

    China

    Homepage

Yang Liu

    Prof. Yang Liu

    Sichuan University-Pittsburgh Institute

    Sichuan University

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 127, 45-49, 2025
doi:10.2528/PIERL25080306 | Google Scholar

Abstract
A novel single-cavity triple-mode combined-type rectangular patch resonator (CRPR) is proposed in this paper, which is realized by integrating the rectangular patch structure with the rectangular substrate integrated waveguide (RSIW) structure. By cleverly designing the length-to-width ratios of both the RSIW structure and the patch structure, as well as the size ratio between them, the three higher-order modes of the CRPR can be resonance. Then, a highly selective bandpass filter (BPF) is realized through a special feeding structure. To demonstrate the method, an instance of a BPF is designed, synthesized, fabricated, and measured. The consistency of all results validates the effectiveness of the proposed design method. The proposed filter offers advantages such as relatively compact size, easy integration, and high selectivity.
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Citation
Yaoran Yue, and Yang Liu, "Single-Cavity Triple-Mode Bandpass Filter Based on a Novel Combined-Type Rectangular Patch Resonator," Progress In Electromagnetics Research Letters, Vol. 127, 45-49, 2025.
doi:10.2528/PIERL25080306
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