基于慢波半模基片集成波导的超宽带陷波带通滤波器设计  

Compact UWB BPF with Notch Band Based on SW-HMSIW

作　　者：李姣 Li Jiao(No.39 Research Institute of CETC, Xi＇an 710065 China)

机构地区：[1]中国电子科技集团公司第39研究所,西安710065

出　　处：《测控与通信》2018年第3期19-23,共5页

摘　　要：提出1种基于慢波半模基片集成波导的超宽带陷波带通滤波器。慢波半模基片集成波导具有高通特性，但是相比慢波基片集成波导尺寸减少50％左右。为了得到超宽带带通滤波器，在慢波半模基片集成波导结构上刻蚀3个紧凑型螺旋微带谐振单元，同时加入L型1／4波长短路谐振器实现陷波功能。为了验证设计理论，设计加工并测试了该滤波器，测试结果与仿真结果吻合一致性较好。A compact ultra-wideband （UWB） bandpass filter （BPF） with a notch band based on a slow-wave half-mode substrate-integrated waveguide （SW-HMSIW） is proposed. Similar to the slow-wave substrate-integrated waveguide （SW-SIW） , SW-HMSIWs can achieve highpass characteristics, while the lateral width is reduced by about 50%. To obtain the UWB response, three spiral compact microstrip resonant cells （SCMRCs） are etched on the SW-HMSIW as a lowpass filter. Moreover, a short-circuited quarter wavelength L-type resonator is used to achieve a notch band. To validate the design theory, a compact UWB BPF is designed and fabricated. The simulated results are compared with the measured results, and good agreement is reported.

关 键 词：慢波半模基片集成波导 紧凑型螺旋微带谐振单元 超宽带 滤波器 

分 类 号：TN713[电子电信—电路与系统]