Interdigital Resonators in Wideband Ridged-Waveguide Filters

An interdigital resonator approach for wideband filter applications in ridged-waveguide technology is presented. The interdigital arrangement of the ridged-waveguide resonators ensures stronger coupling between the resonators. As the coupling sections are consequently enlarged by the interdigital ar...

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Bibliographic Details
Published in:Advances in radio science 2023-03, Vol.20, p.29-35
Main Authors: Weindl, Jonas, Ehrnsperger, Matthias G, Prasetiadi, Ananto, Eibert, Thomas F
Format: Article
Language:English
Subjects:
Broadband
Coupling
Electromagnetic wave filters
Resonators
Waveguide filters
Waveguides
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Summary:An interdigital resonator approach for wideband filter applications in ridged-waveguide technology is presented. The interdigital arrangement of the ridged-waveguide resonators ensures stronger coupling between the resonators. As the coupling sections are consequently enlarged by the interdigital arrangement of the resonators, more feasible filter structures are possible at increasing frequencies. The approach itself can be easily implemented with conventional filter synthesis formulas, which is demonstrated by two 20 GHz examples with a bandwidth of 2 GHz and 100 MHz, respectively. The designed filters are subsequently compared to the standard implementation of ridged-waveguide filters.
ISSN:1684-9973
1684-9965
1684-9973
DOI:10.5194/ars-20-29-2023