FDTD Method for Three-Dimensional Structure Computation

The Finite-Difference Time-Domain (FDTD) method serves as a fundamental numerical approach for solving Maxwell's equations in time domain. This MATLAB implementation employs Yee's algorithm with staggered grid discretization to simulate electromagnetic wave propagation, scattering phenomena, and absorption characteristics across diverse 3D geometries. The codebase features modular design with key functions including: - Field update equations implementing central difference approximations - Perfectly Matched Layer (PML) boundary conditions for absorption - Material property assignment through 3D parameter matrices - Visualization modules for near-field and far-field analysis The program architecture ensures computational efficiency through vectorized operations and supports customizable grid resolution, time step configuration, and multi-parameter material definitions. Its object-oriented structure allows straightforward extension for specialized applications while maintaining robust error handling and validation checks for physical consistency.