Contents Introduction
Rigorous full-wave integral equation formulations for printed-circuit transmission lines are traditionally based on the method of moments (MoM) solutions. A large number of papers are devoted to the applications of MoM to the analysis of microstrip transmission lines. Most of those papers implement subdomain-basis MoM solutions. Due to its great flexibility, subdomain-basis method of moments is widely used in various electromagnetic field solvers. However, this method requires considerable computational time costs to obtain desired accuracy. In [1], an entire-domain basis MoM solution of the integral equation formulation is involved in the full-wave spectral-domain analysis of laterally opened microstrip lines. The proper choice of basis functions taken into account physical effects at the strip edges makes it possible to limit solutions for currents to a few number of basis functions and obtain good accuracy with substantial computational time savings. In the present paper, an entire-domain basis method of moments solution of rigorous electric field integral equation formulation is applied to the full-wave analysis of a shielded microstrip transmission line. An electric-type dyadic Green's function for a multilayered shielded domain served as a kernel of MoM integral equations enables us to analyze various shielded layered microstrip transmission line structures for applications in modern microwave monolithic integrated circuits (MMIC).
