Compact Wideband Bandstop Filter With Directly Controlled Rejection

Liang Liu,Xianling Liang,Haijun Fan,Ronghong Jin,Xudong Bai,Junping Geng

IEEE Transactions on Circuits and Systems II: Express Briefs（2021）

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摘要

This brief presented a wideband bandstop filter (WBBSF) with compact size and five transmission zeros, which is based on a symmetrical three-layer ring structure comprising equivalently high-impedance phase-shift section, coupled lines, and short-stubs. The WBBSF based on multi-mode resonators can be directly synthesized from the desired rejection, and its transmission zeros and bandwidth are cont...

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关键词

Impedance,Shunts (electrical),Filtering theory,Wideband,Resonators,Couplings,Equivalent circuits

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