Computation of Passive Finite Three Dimensional Mmic Structures Using a Global Method of Moments Approach

—In the present work a general approach to compute three-dimensional Monolithic Microwave Integrated Circuit (MMIC) structures is presented. The MMIC is taken to be of arbitrary geometry, described by orthogonal parallelepiped brick shape "cells", each characterized by finite permittivity and conductivity values. The analysis is based on a full wave approach using integral equation techniques and Method of Moments, while a Galerkin technique is implemented to compute the electromagnetic fields of the structure. Then, transformation of the integral equation system into a linear one takes place, while a Green function is used to take into account the boundary conditions as well. The unknown electric field inside the cells is expanded in terms of plane waves' superposition using entire domain basic functions. The incident, reflected and transferred waves in the circuit's input and output microstrip transmission lines are described in terms of current distribution. The calculation of the unknown coefficients ...