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Deembedding of filters' responses from diplexer measurements

Abstract : In this paper we present a method capable of computing the characteristic polynomials of two filters embedded in a diplexer for which a set of measured external scattering parameters is given. Such a method works under general hypotheses without particular assumptions on the junction or the loss-less nature of the filters. The technique is based on a polynomial approximation scheme derived in an analytic manner from the algebraic structure of the diplexer's response. The presented procedure is typically meant as a deembeding step, eventually yielding the coupling matrices of the two filters that can be used during the tuning process of the diplexer.
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Contributor : Fabien Seyfert <>
Submitted on : Friday, January 27, 2012 - 12:50:39 PM
Last modification on : Tuesday, August 13, 2019 - 11:10:04 AM




Matteo Oldoni, Fabien Seyfert, Giuseppe Macchiarella, Damien Pacaud. Deembedding of filters' responses from diplexer measurements. Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International, 2011, Baltimore, United States. pp.1 -4, ⟨10.1109/MWSYM.2011.5972691⟩. ⟨hal-00663515⟩



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