Quasi-Elliptic Wideband Bandstop Filter Using Stepped-Impedance Coupled Line
作者： Si-Wei Ren , Lin-Sheng Wu , Hong-Li Peng , Jun-Fa Mao
DOI: 10.1109/LMWC.2015.2421343
关键词: Wideband 、 Band-stop filter 、 Stopband 、 Physics 、 Electronic engineering 、 Electrical impedance 、 Passband 、 Topology 、 Prototype filter 、 Microstrip 、 Stub (electronics)
摘要: A cross-coupled wideband bandstop filter (BSF) with a 5th-order quasi-elliptic response is proposed and investigated in this letter. The BSF composed of stepped-impedance coupled line connected by an open-circuited shunt stub. An enhanced selectivity stopband rejection can be achieved as result two new transmission zeros, generated from the line. Based on derived rigorous correspondence between its lumped prototype, design handled same to network. example given measured attenuation 34.4 dB over fractional bandwidth 113.4%.
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