Mechanically tunable coupled resonator waveguide bandpass filter

This paper proposes a novel mechanically tunable waveguide filter design, based on a coupled resonator topology. The resonator geometry consists of a rectangular waveguide cavity and a dielectric cylinder. Unlike conventional cylindrical resonators which are made out of a single part, here the cylin...

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Published in2019 IEEE Microwave Theory and Techniques in Wireless Communications (MTTW) Vol. 1; pp. 52 - 56
Main Authors Kimsis, Karlis, Semenjako, Janis, Shestopalov, Y. V.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2019
Subjects
Band-pass filters
coupled resonator filters
Fasteners
Filtering theory
Microwave filters
Resonant frequency
Resonator filters
tunable filters
Tuning
waveguide filters
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Summary:This paper proposes a novel mechanically tunable waveguide filter design, based on a coupled resonator topology. The resonator geometry consists of a rectangular waveguide cavity and a dielectric cylinder. Unlike conventional cylindrical resonators which are made out of a single part, here the cylinders are cut in half. By changing the distance between these two parts, the resonating frequency of the resonator can be changed, which allows for a tunable filter design. A filter using the proposed geometry has a large tuning bandwidth as well as relatively constant passband frequencies. The performance of the proposed filter is demonstrated by evaluating the filter using 3D simulation software CST Studio Suite.
ISBN:1728144728
9781728144726
DOI:10.1109/MTTW.2019.8897240