Ridge waveguide branch-line directional couplers for wideband applications and LTCC technology

TitleRidge waveguide branch-line directional couplers for wideband applications and LTCC technology
Publication TypeConference Paper
Year of Publication2005
AuthorsRuiz-Cruz, J. A., Y. Zhang, K. A. Zaki, A. J. Piloto, and J. M. Rebollar
Conference Name2005 IEEE MTT-S International Microwave Symposium Digest
Date PublishedJune
Keywordsbranch-line directional couplers, chip module integration, directional couplers, equivalent circuits, finite element analysis, finite element method, full-wave optimization, mode matching, mode-matching method, optimisation, ridge waveguides, ridge waveguidesLTCC technology, wide monomode band
AbstractA new branch-line directional coupler is proposed for achieving wide bandwidth. The device is implemented in ridge waveguide to exploit its wide monomode band. It can be physically realized either in empty ridge waveguide or in LTCC for integration in a chip module. Two prototypes of two and five branches are designed following a systematic procedure. An appropriate equivalent circuit provides initial dimensions and the desired optimum response is obtained by means of a final full-wave optimization based on the rigorous and efficient mode-matching method. The results are verified with the finite element method of the HFSS software and a prototype will be manufactured for testing
URLhttp://ieeexplore.ieee.org/iel5/10171/32491/01516896.pdf?tp=&isnumber=&arnumber=1516896
DOI10.1109/MWSYM.2005.1516896