Three dimensional finite element analysis of high power microwave devices

Abstract

A three-dimensional nodal-based finite element formulation for electric or magnetic fields is presented. The formulation includes open boundary problems and conductor interfaces. The open boundary is modeled using the Engquist-Majda absorbing boundary condition. Current sheet excitation is used to excite modes in the waveguide. A validation using an infinitesimal current dipole is shown, and an example of modeling a circular waveguide illustrates the use of the method.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>