A Modified Vector Fitting Technique to Extract Coupling Matrix from S-parameters
Loading...
Date
2023-09
Authors
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Altmetrics
Abstract
In this paper, a modified vector fitting technique to extract coupling matrix from S-parameters is introduced. This work allows designers to extract the coupling matrix of different or any pre-defined topologies from the simulated or measured S-parameter data. A study on vector fitting (VF) equations that can extract the rational polynomial of bandpass filter responses is carried out. The rational polynomials are formed by applying the VF process to S-parameter responses without having to remove the phase offset and de-embedding the transmission lines. The desired coupling matrix configuration is generated directly from the extracted polynomials using unconstrained and finitely bounded non-linear polynomials (NLP) optimization. Without the need for matrix transformation, the matrix elements are still able to show a one-to-one relationship in coupling values of resonators. Two bandpass filters are shown as examples to illustrate the performance of the new variation of VF.
Description
Citation
Radioengineering. 2023 vol. 32, č. 3, s. 325-331. ISSN 1210-2512
https://www.radioeng.cz/fulltexts/2023/23_03_0325_0331.pdf
https://www.radioeng.cz/fulltexts/2023/23_03_0325_0331.pdf
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en