Ultra-Wideband LTCC Ridge Waveguide Filters

TitleUltra-Wideband LTCC Ridge Waveguide Filters
Publication TypeJournal Article
Year of Publication2007
AuthorsRuiz-Cruz, J. A., Y. Zhang, K. A. Zaki, A. J. Piloto, and J. Tallo
JournalIEEE Microwave and Wireless Components Letters
Date PublishedFeb.
Keywordsband-pass filters, bandpass filter, filter coupling scheme, low temperature co fired ceramic, LTCC, metal filled vias, mode matching method, nine order filter, planar conductors, ridge waveguide filters, ridge waveguide resonators, ridge waveguides, stripline transitions, ultra wideband filter, waveguide filters3 to 9 GHz
AbstractThe design and experimental validation of an ultra-wideband (UWB) filter in a low temperature co-fired ceramic (LTCC) is presented. The bandpass filter uses ridge waveguide resonators realized in LTCC by printing parallel planar conductors for the top and bottom walls and closely spaced metal filled vias for the lateral walls. Filter coupling scheme and stripline transitions are developed for the UWB requirement. The mode-matching method is used in their design. The LTCC via effect and the measurement setup are also addressed. Finally, experimental results of a nine-order filter (design passband from 3 to 9GHz) are presented