LTCC wide-band canonical ridge waveguide filters

TitleLTCC wide-band canonical ridge waveguide filters
Publication TypeConference Paper
Year of Publication2005
AuthorsFahmi, M. M., J. A. Ruiz-Cruz, K. A. Zaki, and A. J. Piloto
Conference Name2005 IEEE MTT-S International Microwave Symposium Digest
Date PublishedJune
Keywordscanonical ridge waveguide filters, ceramic packaging, coupling scheme, coupling sections, full-wave analysis, mode matching, mode matching method, narrow ridge waveguide, optimisation, ridge waveguides, six pole filter, waveguide filters LTCC, wide-band filters
AbstractA canonical LTCC ridge waveguide filter for wide-band application is proposed. A new coupling scheme is employed to achieve the values of the cross couplings needed to increase the bandwidth. The change of the realization of the coupling sections from rectangular to narrow ridge waveguide is shown to eliminate detrimental undesired cross coupling. To validate the concept, rigorous mode matching method is used for full-wave analysis and optimization of a six pole filter. The response is verified with another numerical method, and a prototype is constructed for testing.