Articles | Volume 20
21 Mar 2023
 | 21 Mar 2023

Interdigital Resonators in Wideband Ridged-Waveguide Filters

Jonas Weindl, Matthias G. Ehrnsperger, Ananto Prasetiadi, and Thomas F. Eibert

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Cited articles

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Arndt, F., Beyer, R., Reiter, J., Sieverding, T., and Wolf, T.: Automated Design of Waveguide Components Using Hybrid Mode-Matching/Numerical EM Building-Blocks in Optimization-Oriented CAD Frameworks-State of the Art and Recent Advances, IEEE Trans. Microw. Theory Technol., 45, 747–760, 1997. a
Bornemann, J. and Arndt, F.: Modal-S-Matrix Design of Optimum Stepped Ridged and Finned Waveguide Transformers, IEEE Trans. Microw. Theory Technol., 35, 561–567, 1987. a
Cameron, R. J., Kudsia, C. M., and Mansour, R. R.: Microwave Filters for Communication Systems: Fundamentals, Design, and Applications, John Wiley & Sons, ISBN 1118274342, Hoboken, New Jersey, 2018. a, b, c
Collin, R. E.: Field Theory of Guided Waves, Wiley, ISBN 978-0-87942-237-0, Hoboken, New Jersey, 1990. a
Short summary
The technology of ridged-waveguide filters provides high midband frequencies as well as the suppression of spurious passbands up until very high frequencies. Due to the concept of these filters, broad bandwidths lead to reduced filter dimensions that are very difficult to fabricate. The interdigital arrangement of resonators guarantees a more reliable fabrication of these filters. The research was done in order to supply filters for the different frequency bands in the 5G communication standard.