Mechanically Tunable Coupled Resonator Waveguide Bandpass Filter

2019 IEEE Microwave Theory and Techniques in Wireless Communications (MTTW 2019) 2019
Kārlis Ķimsis, Jānis Semeņako, Yury Shestopalov

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.

Keywords
Microwave filters, tunable filters, waveguide filters, coupled resonator filters
DOI
10.1109/MTTW.2019.8897240
Hyperlink
https://ieeexplore.ieee.org/document/8897240

Ķimsis, K., Semeņako, J., Shestopalov, Y. Mechanically Tunable Coupled Resonator Waveguide Bandpass Filter. In: 2019 IEEE Microwave Theory and Techniques in Wireless Communications (MTTW 2019), Latvia, Riga, 1-2 October, 2019. Piscataway: IEEE, 2019, pp.1-6. ISBN 978-1-7281-4472-6. e-ISBN 978-1-7281-4473-3. Available from: doi:10.1109/MTTW.2019.8897240

Publication language
English (en)