Title :
Microstrip lines on substrates with segmented or continuous permittivity profiles
Author_Institution :
Dept. of Electr. Eng., Nat. Chung-Hsing Univ., Taichung, Taiwan
fDate :
2/1/1997 12:00:00 AM
Abstract :
The propagation properties of microstrip lines on a substrate with inhomogeneous permittivity and conductivity profiles are analyzed. The eigenmodes in each inhomogeneous layer are obtained by solving an eigen equation. These eigenmodes are then used to formulate the Green´s function of the stratified medium. An integral equation is next derived in terms of the surface current on the strip. Galerkin´s method is then applied to obtain a determinantal equation to be solved for the propagation constant. The effect of several permittivity and conductivity profiles are analyzed
Keywords :
Galerkin method; Green´s function methods; eigenvalues and eigenfunctions; electrical conductivity; electromagnetic wave propagation; integral equations; microstrip lines; mode matching; permittivity; Galerkin´s method; Green´s function; continuous permittivity profiles; determinantal equation; eigen equation; eigenmodes; inhomogeneous conductivity profiles; inhomogeneous permittivity profiles; integral equation; microstrip lines; mode-matching technique; normalized phase constant; propagation constant; propagation properties; segmented permittivity profiles; stratified medium; substrates; surface current; Capacitance; Conductivity; Dielectric substrates; Integral equations; Microstrip; Moment methods; Permittivity; Propagation constant; Stripline; Strips;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
