Deembedding of filters in multiplexers via rational approximation and interpolation

Fabien Seyfert 1 Matteo Oldoni 2 Martine Olivi 1 Sanda Lefteriu 1 Damien Pacaud 3
1 APICS - Analysis and Problems of Inverse type in Control and Signal processing
CRISAM - Inria Sophia Antipolis - Méditerranée
2 Dipartimento di Elettronica e Informazione
3 Thales Alenia Space - TAS (Toulouse, France)
Abstract : In this paper we present a method to recover electrical parameters of filters embedded in a multiplexer for which scattering measurements are given. Unlike other approaches proposed for this problem, this method does not require a priori knowledge of the scattering parameters of the junction. This feature renders the procedure well suited for tuning purposes or for fault diagnosis. Technically the algorithm starts with a rational approximation step, in order to derive a rational representation of certain scattering parameters of the multiplexer. This representation is then used in a second step to identify the electrical model of each filter. This second step relies on a rational interpolation technique used to extract the filter's responses.
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Communication dans un congrès
IMS - IEEE International Microwave Symposium, Jun 2014, Tampa Bay, Florida, United States. 2014
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Fabien Seyfert, Matteo Oldoni, Martine Olivi, Sanda Lefteriu, Damien Pacaud. Deembedding of filters in multiplexers via rational approximation and interpolation. IMS - IEEE International Microwave Symposium, Jun 2014, Tampa Bay, Florida, United States. 2014. <hal-01052718>

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