Title :
Transient analysis of distortion and coupling in lossy coupled microstrips
Author :
Gilb, Jame P K ; Balanis, Constantine A.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
fDate :
12/1/1990 12:00:00 AM
Abstract :
The transient response of lossy coupled microstrips is studied using the spectral-domain approach (SDA) to rigorously compute the dielectric losses. The dielectric loss coefficient is computed using the SDA with a complex dielectric constant, and results are compared with those obtained by the formula advanced by M.V. Schneider (1969) using a finite-difference approximation for the partial derivative. Transient coupling is formulated in the frequency domain by an even/odd mode approach, showing how differences in either the modal loss coefficients or modal propagation constants can be responsible for coupling between lines. Results for pulse distortion on a semiconductor substrate are presented, showing how losses reduce the signal amplitude without significantly distorting the shape
Keywords :
dielectric losses; frequency-domain analysis; strip lines; transient response; waveguide theory; complex dielectric constant; coupling; dielectric loss coefficient; dielectric losses; even/odd mode approach; frequency domain; lossy coupled microstrips; modal loss coefficients; modal propagation constants; pulse distortion; semiconductor substrate; spectral-domain approach; transient response; Dielectric constant; Dielectric losses; Distortion; Finite difference methods; Frequency domain analysis; Microstrip; Propagation constant; Propagation losses; Transient analysis; Transient response;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
