Scattering parameter simulation of microwave window with conformai FDTD method

A code was developed to simulate the scattering parameter of microwave windows. In the code, the conformai Finite Differential in Time Domain (FDTD) method was applied. A coaxial waveguide window was simulated as an example. And the scattering parameter calculated by the conformal FDTD method is compared with the result by the standard FDTD method. The result with the conformal FDTD method is much closer to the CST MWS result.