Title :
Circuit model of coupled transmission lines with frequency-dependent transformations
Author :
Yu, Qingjian ; Wing, Omar
Author_Institution :
Dept. of Autom. Control, Nanjing Univ. of Sci. & Technol., China
fDate :
30 May-2 Jun 1994
Abstract :
A system of coupled transmission lines with frequency-dependent parameters is decoupled into separate, uncoupled lines by a linear transformation, in which each element, being a function of frequency, is modeled as a transfer function of a lumped circuit. Each decoupled line is modeled by its characteristic 2-port. Lumped models of the characteristic impedance and the propagation function are given. For lines with skin effects, we present a new lumped model of √s which is scalable, exact at zero frequency and accurate over a wide frequency range. The model of the entire system of coupled lines can be implemented in SPICE using existing circuit elements
Keywords :
SPICE; circuit analysis computing; coupled circuits; distributed parameter networks; skin effect; transient analysis; transient response; SPICE; characteristic impedance; characteristic two-port; circuit elements; circuit simulators; coupled transmission lines; frequency-dependent transformations; linear transformation; lumped circuit; propagation function; skin effects; transient response; uncoupled lines; Coupling circuits; Distributed parameter circuits; Frequency; Impedance; SPICE; Skin effect; Symmetric matrices; Transfer functions; Transmission line matrix methods; Voltage;
Conference_Titel :
Circuits and Systems, 1994. ISCAS '94., 1994 IEEE International Symposium on
Conference_Location :
London
Print_ISBN :
0-7803-1915-X
DOI :
10.1109/ISCAS.1994.409288
