FDTD 2D TM Wave Simulation Program

The FDTD 2D TM Wave Simulation Program is a digital simulation method for calculating electromagnetic wave propagation in two-dimensional space. This program employs the Finite-Difference Time-Domain (FDTD) algorithm to solve Maxwell's equations numerically, implementing key components such as Yee cell discretization, perfectly matched layer (PML) boundary conditions, and source excitation mechanisms. The code structure typically includes field update loops for Ez, Hx, and Hy components using central difference approximations, with material properties defined through epsilon and mu arrays. It can simulate various physical phenomena including reflection, refraction, and interference patterns through proper implementation of boundary handling and material interface conditions. Additionally, the program enables researchers to study wave propagation characteristics and material electromagnetic properties by analyzing field distribution outputs and implementing frequency-domain transforms. Applications span multiple domains including antenna design (through radiation pattern calculation), optical device modeling, and electromagnetic imaging systems. When using the program, appropriate computational parameters (time step, spatial resolution) and geometric structures must be selected to ensure numerical stability and accuracy through Courant condition validation. Therefore, this program serves as a fundamental tool in electromagnetic wave research and engineering applications.