集成宽带折叠半模基片集成波导带通滤波器

Compact Wideband Folded Half Mode Substrate Integrated Waveguide Bandpass Filters

本文提出并设计了一种新型的折叠半模基片集成波导(Folded Half-Mode Substrate Integrated Waveguide:FHMSIW)宽带带通滤波器,并给出了FHMSIW上层金属层槽缝式和中间金属层槽缝式宽带滤波器的仿真和测试结果.相对于半模基片集成波导(Half-Mode Substrate Integrated Waveguide:HMSIW)槽缝式滤波器,由双层PCB制作的FHMSIW槽缝式滤波器的尺寸减小了约一半.同时测试结果和仿真结果表明该宽带滤波器具有损耗小、带外抑制好等特性.

This paper presents the design and experiment of the folded half mode substrate integrated waveguide（FHMSIW） slot bandpass filters.Top layer and middle layer slot super-wide-band FHMSIW filters are simulated and fabricated based on double layer standard printed circuit board（PCB） process.The size of the FHMSIW filter is reduced nearly by 50% compared with half-mode substrate integrated waveguide（HMSIW） filter.Performances of these super-wide bandpass filters with low insertion loss and sharp out-of-band characteristics are observed from both simulated and measured results.