基于小型半模扇形谐振器的单频和双频滤波器设计  

Design of single-and dual-band filters based on miniaturized half-mode fan-shaped resonator

作　　者：张胜 武禧龙 刘海 赵恩惠 乔红亮 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)

机构地区：[1]中国矿业大学信息与控制工程学院,江苏徐州221116

出　　处：《电子元件与材料》2025年第1期57-62,共6页Electronic Components And Materials

基　　金：国家重点研发计划(2021YFC2902701)。

摘　　要：基于一种小型半模扇形基片集成波导谐振器,分别设计出一种单频带通滤波器和一种双频带通滤波器。首先,通过在谐振器表面引入两个径向槽,它们能够独立控制四个模式的谐振频率,实现了阻带带宽达3.3 GHz的单频滤波器。其次,在源和负载之间引入交叉枝节,从而实现了中心频率可调的双频滤波器。两种滤波器均具有传输零点,极大地提高了滤波器的带外抑制特性。最后,对双频滤波器进行了加工和测量,实测中心频率为0.94 GHz/2.1 GHz,插入损耗为1.07 dB/1.31 dB,回波损耗优于22.3 dB,与仿真结果基本吻合。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.

关 键 词：小型化 半模 基片集成波导 双频 径向槽 

分 类 号：TN713[电子电信—电路与系统]