TEM Mode-Matching Analysis of Multi-coupled Strip-line Filters

TitleTEM Mode-Matching Analysis of Multi-coupled Strip-line Filters
Publication TypeConference Paper
Year of Publication2007
AuthorsRuiz-Cruz, J. A., Y. Zhang, J. M. Rebollar, K. A. Zaki, J. R. Montejo-Garai, and A. J. Piloto
Conference Name2007 IEEE MTT-S International Microwave Symposium Digest
Date PublishedJune
Keywordsmicrowave filters, mode matching, multicoupled strip-line filter design, optimum structure segmentation, strip line filtersTEM mode-matching analysis
AbstractThe analysis of multi-coupled strip-line filters by the mode-matching method is studied for different input/output excitations. The aim is to compare the computational effort of two different options and to propose the most suitable formulation for the design of some strip-line filters. It is shown that a suitable segmentation of the structure is essential for obtaining good numerical results. In fact, if the optimum segmentation is selected, a mode-matching analysis using only TEM modes can resemble the full-wave response, with shorter computation time. Hence, this approach can be very useful in design and different examples are shown to validate it, using other numerical methods and measurements of a ten order filter.