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Chebyshev collocation and Newton-type optimization methods for the inverse problem on nonuniform transmission lines
KTH, Skolan för elektro- och systemteknik (EES), Elektroteknisk teori och konstruktion.ORCID-id: 0000-0001-9241-8030
2005 (engelsk)Inngår i: IEEE transactions on microwave theory and techniques, ISSN 0018-9480, E-ISSN 1557-9670, Vol. 53, nr 5, s. 1561-1568Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A frequency-domain inverse problem for the nonuniform LCRG transmission line is considered. The parameters of the nonuniform line are interpolated by Chebyshev polynomials, and the Telegraphers equations are solved by a collocation method using the same polynomials. The interpolation coefficients for the unknown parameters are reconstructed by means of Newton-type optimization methods for which the Jacobian matrix has been calculated explicitly. For the reconstruction of one or two parameters, the algorithm is tested on synthetic data, and the necessity to use regularization is discussed. Finally, the algorithm is tested with measured reflection data to reconstruct shunt capacitances with piecewise constant profiles.

sted, utgiver, år, opplag, sider
2005. Vol. 53, nr 5, s. 1561-1568
Emneord [en]
collocation, inverse problem, optimization, transmission line, simultaneous reconstruction, frequency-domain
Identifikatorer
URN: urn:nbn:se:kth:diva-14741DOI: 10.1109/tmtt.2005.847045ISI: 000229053600001Scopus ID: 2-s2.0-19544389852OAI: oai:DiVA.org:kth-14741DiVA, id: diva2:332782
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QC 20100525Tilgjengelig fra: 2010-08-05 Laget: 2010-08-05 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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