Full-wave design of canonical ridge waveguide filters

TitleFull-wave design of canonical ridge waveguide filters
Publication TypeConference Paper
Year of Publication2004
AuthorsRuiz-Cruz, J. A., M. A. El Sabbagh, K. A. Zaki, and J. M. Rebollar
Conference Name2004 IEEE MTT-S International Microwave Symposium Digest
Date PublishedJune
Keywordsband-pass filters, coupling matrix, elliptic filters, elliptic function filter, filtering theory, full-wave design, full-wave optimization, mode matching, mode-matching, waveguide filters canonical ridge waveguide filters, wide bandwidth, wide spurious free stop band
AbstractA new physical realization of an elliptic function filter response is proposed for achieving compact size, wide bandwidth, wide spurious free stop band and high selectivity performance. The canonical ridge waveguide filter configuration is analyzed using rigorous mode-matching. To validate the concept, a prototype that realizes the coupling matrix of a canonical four cavity elliptic filter is designed following a systematic procedure. Approximate synthesis is used to obtain initial dimensions of the filter and the desired optimum response is obtained by means of a final full-wave optimization. The results are verified with other numerical method and a prototype will be built for testing.