Couplings of microstrip square open-loop resonators for cross-coupled planar microwave filters

Jia-Sheng Hong, Michael J. Lancaster

Research output: Contribution to journalArticle

706 Citations (Scopus)

Abstract

A new type of cross-coupled planar microwave filter using coupled microstrip square open-loop resonators is proposed. A method for the rigorous calculation of the coupling coefficients of three basic coupling structures encountered in this type of filter is developed. Simple empirical models are derived for estimation of the coupling coefficients. Experiments are performed to verify the theory. A four-pole elliptic function filter of this type is designed and fabricated. Both the theoretical and experimental performance is presented
Original languageEnglish
Pages (from-to)2099-2109
JournalIEEE Transactions on Microwave Theory and Techniques
Volume44
Issue number11
DOIs
Publication statusPublished - Nov 1996

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