Three-dimensional split-step-fourier and finite difference time domain-based rectangular waveguide filter simulators: Validation, verification, and calibration

Abstract

The split-step-Fourier-based three-dimensional wave propagation prediction and finite-difference time-domain-based simulators are developed to show network scattering parameters of rectangular waveguide filters with horizontal and/or vertical windows as capacitive and/or inductive irises, respectively. The three-dimensional-split-step parabolic equation simulator is applied to rectangular waveguide filters, and the results are compared with finite-difference time-domain model through tests inside a rectangular waveguide. (c) 2016 Wiley Periodicals, Inc. Int J RF and Microwave CAE 26:660-667, 2016.