Vol. 93

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2020-09-22

Analysis and Design of a New Ring Bandstop Filter Using Lumped Equivalent Circuit

By Chaoyue Yang and Chengfang Fu
Progress In Electromagnetics Research Letters, Vol. 93, 81-87, 2020
doi:10.2528/PIERL20073004

Abstract

A new ring wideband bandstop filter (BSF) and its exact design method is proposed and investigated in this letter. The BSF is devised by introducing an additional transmission line to a traditional hairpin bandstop filter in parallel, hence giving enhanced selectivity and attenuation performance. A lumped lowpass equivalent circuit is introduced to explain the mechanism of the filter. Rigorous correspondence between the BSF and its equivalent circuit is established by comparing their even- and odd-mode input admittances. This enables the BSF to be synthesized the same way as lumped filters. Both the BSF and the method have been documented by a design example.

Citation


Chaoyue Yang and Chengfang Fu, "Analysis and Design of a New Ring Bandstop Filter Using Lumped Equivalent Circuit," Progress In Electromagnetics Research Letters, Vol. 93, 81-87, 2020.
doi:10.2528/PIERL20073004
http://www.jpier.org/PIERL/pier.php?paper=20073004

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