A Novel Tuning Structure for Bandstop Filter

This paper gives a novel structure design for bandstop filter. In narrow bandstop filter design, reactance slope is very critical and sensitive to the response, so we need to design suitable L and C which will resonate on the needed frequency and reactance slope. This structure can help to tune both the L and C of the coaxial cavities which are connected to the main line, so the tuning of reactance slope is possible, which makes the filter tuning easier