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Journal Articles IEEE Transactions on Microwave Theory and Techniques Year : 2010

Theory of Coupled Resonator Microwave Bandpass Filters of Arbitrary Bandwidth

Abstract

This paper presents a new approach to the design of canonical dual-mode cavity filters within representation theory. Instead of the folded canonical coupling matrix, which results from using the resonances of the empty cavities as a basis, a representation based on the resonances of the cavities with all perturbations present is used. The resulting coupling matrix takes the form of a cul-de-sac configuration. For canonical dual-mode filters with a symmetric response, it allows direct design of the entire structure, except of the input cavity that requires optimization. A sixth-order filter with two symmetrically located transmission zeros is presented to document the validity of the approach. A sixth-order filter with two transmission zeros above the passband is also presented.
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Dates and versions

hal-00663513 , version 1 (20-01-2020)

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Smain Amari, Fabien Seyfert, M. Bekheit. Theory of Coupled Resonator Microwave Bandpass Filters of Arbitrary Bandwidth. IEEE Transactions on Microwave Theory and Techniques, 2010, 58 (8), pp.2188 -2203. ⟨10.1109/TMTT.2010.2052874⟩. ⟨hal-00663513⟩

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