A. Cheldavi et G. Rezai-rad, Modeling of nonuniform coupled transmission lines interconnect using genetic algorithms, IEICE T FUN, E83A(10), 2000, pp. 2023-2034
Citations number
36
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES
Based on genetic algorithm (GA) in this paper we present a simple method to
extract distributed circuit parameters of a multiple coupled nonuniform mi
crostrip transmission lines from it's measured or computed S-parameters. Th
e lines may be lossless or lossy, with frequency dependent parameters. Firs
t a sufficient amount of information about the system is measured or comput
ed over an specified frequency range. Then this information is used as an i
nput for a GA to determine the inductance and capacitance matrices of the s
ystem. The theory used for fitness evaluation is based on the steplines app
roximation of the nonuniform transmission lines and quasi-TEM assumptions.
Using steplines approximation the system of coupled nonuniform transmission
lines is subdivided into arbitrary large number of coupled uniform lines (
steplines) with different characteristics. Then using modal decomposition m
ethod the system of coupled partial differential equations for each step is
decomposed to a number of uncoupled ordinary wave equations which are then
solved in frequency-domain.