基于小型半模扇形谐振器的单频和双频滤波器设计

打开文本图片集

关键词：小型化；半模；基片集成波导；双频；径向槽

中图分类号：TN713

文献标识码：A

DOI：10.14106/j.cnki.1001-2028.2025.1324

引用格式：张胜，武禧龙，刘海，等.基于小型半模扇形谐振器的单频和双频滤波器设计 [J]. 电子元件与材料， 2025， 44（1）： 57-62.

Reference format：  ZHANG Sheng， WU Xilong， LIU Hai， et al. Design of single-and dual-band filters based on miniaturized half-mode fan-shaped resonator [J]. Electronic Components and Materials， 2025， 44（1）： 57-62.

Design of single- and dual-band filters based on miniaturized

half-mode fan-shaped resonator

ZHANG Sheng， WU Xilong， LIU Hai， ZHAO Enhui， QIAO Hongliang

（School of Information and Control Engineering，China University of Mining and Technology， Xuzhou 221116， Jiangsu

Province， China）

Abstract：  Based on a compact half-mode substrate integrated waveguide resonator， a single-band bandpass filter and a dual-band bandpass filter were designed. First， by introducing two radial slots on the surface of the resonator， the resonant frequencies of the four modes can be independently controlled， and a single-band filter with a stopband width of up to 3.3 GHz can be achieved. Second， by introducing cross stubs between the source and load， a dual-band filter can be realized with adjustable center frequencies. Both filters have transmission zeros， which significantly improve their out-of-band rejection performance. Finally， the dual-band filter was fabricated and measured at center frequencies of 0.94/2.1 GHz. It has insertion losses of 1.07/1.31 dB respectively. The return loss is better than 22.3 dB， which agrees well with the simulation results.

Keywords： miniaturized; half-mode; substrate integrated waveguide; dual-band; radial slot

现代无线通信系统亟需结构紧凑和性能优越的带通滤波器[1-2]，基片集成波导（Substrate Integrated Waveguide，SIW）由于具有高品质因数、低成本、低插损等优点，被广泛用于高性能滤波器的设计[3-9]。（剩余6375字）