Author :
Yin, W.Y. ; Guo, B. ; Dong, X.T. ; Gan, Y.B.
Abstract :
The effect of anisotropy in multilayer superstrate-substrates on the propagation of a Gaussian pulse and a sinusoidally modulated Gaussian pulse in shielded microstrip lines (MLs) has been examined. Such multilayer superstrate-substrates are made of sapphire, ferrite and perhaps biaxially anisotropic materials, characterised by both tensorial permittivity and permeability. Mathematical treatments used were based on Galerkin´s method in the spectral domain and fast Fourier transformation (FFT). Parametric studies were performed to show the effects of various diverse anisotropic occurrences in the superstrate-substrates on pulse distortion, including time delay, ringing and crosstalk between signal and sensing strips. It was shown that pulse distortion could be reduced effectively by combining different anisotropies in superstrates and substrates
Keywords :
Galerkin method <diverse anisotropy, multilayer superstrate-substrs., pulse propag., shielded microstrip lines, effect>; coupled transmission lines <diverse anisotropy, multilayer superstrate-substrs., pulse propag., shielded microstrip lines, effect>; crosstalk <diverse anisotropy, multilayer superstrate-substrs., pulse propag., shielded microstrip lines, effect>; electromagnetic coupling <diverse anisotropy, multilayer superstrate-substrs., pulse propag., shielded microstrip lines, effect>; fast Fourier transforms <diverse anisotropy, multilayer superstrate-substrs., pulse propag., shielded microstrip lines, effect>; microstrip lines <diverse anisotropy, multilayer superstrate-substrs., pulse propag., shielded microstrip lines, effect>; multilayers <diverse anisotropy, multilayer superstrate-substrs., pulse propag., shielded microstrip lines, effect>; permeability <diverse anisotropy, multilayer superstrate-substrs., pulse propag., shielded microstrip lines, effect>; permittivity <diverse anisotropy, multilayer superstrate-substrs., pulse propag., shielded microstrip lines, effect>; spectral-domain analysis <diverse anisotropy, multilayer superstrate-substrs., pulse propag., shielded microstrip lines, effect>; waveguide theory <diverse anisotropy, multilayer superstrate-substrs., pulse propag., shielded microstrip lines, effect>; FFT; Galerkin´s method; Gaussian pulse propagation; biaxially anisotropic materials; crosstalk; diverse anisotropy; electromagnetic coupling; fast Fourier transformation; ferrite; multilayer superstrate-substrates; pulse distortion; ringing; sapphire; sensing strips; shielded microstrip lines; sinusoidally modulated Gaussian pulse; spectral domain; tensorial permeability; tensorial permittivity; time delay;
