Analysis of shielding effects on the microstrip effective dielectric constant by the finite‐element method

Abstract

Structures having symmetrically centered microstrip lines enclosed in a metallic waveguide are analyzed by the finite‐element method. Single and combined shielding effects on the microstrip effective dielectric constant due to a top cover and two side walls are investigated. A finite‐element computer program has been written in Fortran for a supercomputer to obtain very accurate numerical results by means of the solution of a very large system of linear equations. In addition, a new set of accurate empirical equations adequate for CAD to take both effects into account has been developed. Results are compared with other numerical and empirical methods, and discussions are also presented. © 1994 John Wiley & Sons, Inc.

Effective permittivity and attenuation coefficient of microstrip transmission line determined by 1-port and 2-port measuring methods

“…In the literature there are reports of several measuring methods to determine the frequency-dependent effective permittivity, ε re (f ), of microstrip transmission lines [2][3][4]. Basically, the measuring methods can be divided into two categories.…”