Computer Simulation of 3-Dimensional Waveguide by Electrilc Field Integral Equation

In this paper we perform computer simulations of a 3-dimensional waveguide by the method of moment based on an electric field integral equation (EFIE). The EFIE is derived in the similar way to derive the guided-mode extracted integral equation for a 2-dimensional waveguide. The EFIE can be solved with no use of mode expansion technique. Concentric step discontinuity structures are simulated. The numerical results are compared with numerical and experimental results.