FDTD Algorithm Source Code for Electromagnetic Wave Radiation - C++ Implementation

This article presents a C++ implemented FDTD (Finite-Difference Time-Domain) program source code designed for simulating electromagnetic wave radiation behavior. The program utilizes advanced numerical methods including Yee's grid algorithm for spatial discretization and leapfrog time-stepping scheme for temporal evolution. Key implementation features include optimized memory management through structured grid arrays, boundary condition handling using PML (Perfectly Matched Layer) absorption, and parallel computation capabilities for large-scale simulations. Through this program, researchers can investigate electromagnetic wave propagation patterns across various environments and perform further optimization and enhancements. The source code incorporates efficient algorithms and data structures such as sparse matrix operations and field component interleaving to ensure high performance and accuracy in large-scale simulations. For researchers interested in electromagnetic radiation studies, this C++ based FDTD program serves as an essential tool with comprehensive documentation and modular architecture facilitating customization and extension.