基于菱形SIW的小型化双频可控带通滤波器  

A Miniaturized Dual⁃band Controllable Bandpass Filter Based on Rhombic Substrate Integrated Waveguide

作　　者：张胜 佘金川 仝梦寒 ZHANG Sheng;SHE Jinchuan;TONG Menghan(School of Information and Control Engineering,China University of Mining and Technology,Xuzhou,Jiangsu,221116,CHN)

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：《固体电子学研究与进展》2021年第2期115-119,共5页Research & Progress of SSE

基　　金：中央高校基本科研业务费专项资金资助项目(2019GF12)。

摘　　要：提出了一种四分之一模菱形基片集成波导谐振腔,设计并制作了一款小型化的双频带通滤波器。引入了T型槽线结构,实现了滤波器双通带中心频率的调节。利用间隙耦合、高低阶模式耦合和源负载耦合,在带外产生了7个传输零点,提高了滤波器的频率选择特性。滤波器双通带中心频率分别为4.4和7.7 GHz,3 dB带宽分别为517和405 MHz。测试与仿真结果基本一致。A quarter-mode rhombus substrate integrated waveguide resonant cavity was pro⁃posed,and a miniaturized dual-band bandpass filter was designed and fabricated.The T-shaped slot structure was introduced to adjust the center frequencies of two passbands.By utilizing gap coupling,high-and-low order mode coupling and source-load coupling,seven transmission zeros are generated out of band,which improve the frequency selectivity.The center frequencies of the filter are 4.4 and 7.7 GHz,and the 3dB bandwidths are 517 and 405 MHz respectively.The measured results are basi⁃cally consistent with the simulated results.

关 键 词：1/4模菱形基片集成波导 T型槽线结构 小型化 可控双频带通滤波器 

分 类 号：TN713[电子电信—电路与系统]