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Roll-off Improvement of Open-circuited Stub Bandstop Filter
Abstract
This paper presents an alternative implementation of a shunt open-circuited stub bandstop filter for microwave circuit. By making use of the proposed implementation, a simple and compact bandstop filter with distinct bandstop characteristics is designed at 1.25 cutoff frequency and FBW of 1.2. This paper also focuses on how to increase the roll-off of bandstop filter by increasing the number of the shunt stub. A shunt open-circuited stub is the simplest band stop structure for microwave circuit design, and roll-off is a term commonly used to describe the steepness of a transmission function with frequency.
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PDFDOI: https://doi.org/10.37591/joedt.v4i1.4880
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