Ridge Waveguide Elliptic Filters in Narrow-Wall Canonical Configuration

TitleRidge Waveguide Elliptic Filters in Narrow-Wall Canonical Configuration
Publication TypeConference Paper
Year of Publication2006
AuthorsRuiz-Cruz, J. A., Y. Zhang, M. M. Fahmi, and K. A. Zaki
Conference NameProc. 36th European Microwave Conference
Date PublishedSept.
Keywordscircuit synthesis, elliptic filters, four-pole filter, full-wave optimization, metallic strips, mode matching, mode matching method, narrow-wall canonical configuration, negative cross couplings, network synthesis, nonadjacent cavities, positive cross couplings, rectangular waveguides, ridge waveguide elliptic filters, ridge waveguides, waveguide filtersHFSS software
AbstractA new canonical ridge waveguide structure is proposed to design elliptic filter responses. The non-adjacent cavities are coupled by windows situated at the common narrow-wall of the ridge waveguide enclosures. This new configuration provides positive and negative cross couplings using evanescent rectangular waveguides and metallic strips, respectively. The full-wave analysis of the structure is carried out by a rigorous mode matching method. The design is based on circuit synthesis and full-wave optimization. Finally, the proposed structure is elucidated with the design of a four-pole filter and it is validated with the commercial HFSS software