ANALYSIS AND DESIGN OF A NEW RING BANDSTOP FILTER USING LUMPED EQUIVALENT CIRCUIT

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...

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Veröffentlicht in:Progress in electromagnetics research. Letters 2020-01, Vol.93, p.81-87
Hauptverfasser: Yang, Chaoyue, Fu, Chengfang
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:1937-6480
1937-6480
DOI:10.2528/pierl20073004