NDLI: Nonuniform transmission line simulation with circuit simulator

Content Provider	IEEE Xplore Digital Library
Author	Izydorczyk, J.
Copyright Year	2010
Description	Author affiliation: Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland (Izydorczyk, J.)
Abstract	In the present article a method of lossless nonuniform transmission line (NUTL) analysis is proposed. The method reduces analysis of the NUTL to the analysis of cascaded sections of linear varied transmission line (LNTL). Frequency response of each section is described by Bessel functions. Therefore direct implementation of the method in circuit simulator is usually impossible. LNTL input-output relations can be approximated by rational function in frequency domain. It is a form of Padé approximation. The model can be implemented in circuit simulator as an active circuit. Unfortunately circuit input reflection coefficient is distorted in unacceptable manner. Input reflection coefficient is equal for DC to one irrespectively of order of Padé approximation. Author proposed a method which deforms rational approximation residua slightly so frequency response of the model is disturbed minimally and passivity of the circuit is preserved. Synthesis of the passive modeling circuit was conducted for broad range of LNTL slope parameter. The circuit was a cascade connection of Darlington C-type sections. Parameters of the sections were approximated by polynomial regression functions. The specific insensitivity of cascaded circuits on parameter changes assures high accuracy of the model despite inevitable errors in process of parameter regression.
Starting Page	549
Ending Page	552
File Size	271194
Page Count	4
File Format	PDF
ISBN	9781424457939
e-ISBN	9781424457953
DOI	10.1109/MELCON.2010.5476034
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-04-26
Publisher Place	Malta
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Circuit simulation Distributed parameter circuits Frequency response Reflection Propagation losses Frequency domain analysis Active circuits Deformable models Circuit synthesis Polynomials
Content Type	Text
Resource Type	Article

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