3D FDTD Implementation using MATLAB with Structural Reference Capabilities

This article presents a 3D FDTD (Finite-Difference Time-Domain) code implementation developed using MATLAB, which can serve as a reference template for analyzing other electromagnetic structures. The code employs Yee's algorithm for spatial discretization, implementing leapfrog time-stepping for electric and magnetic field updates with Perfectly Matched Layer (PML) boundary conditions. Through VIP access, users can obtain additional resources including optimized material libraries, advanced visualization tools, and technical support. Key implementation features include: - Three-dimensional grid generation with customizable spatial resolution - Maxwell's equations discretization using central-difference approximations - PML absorption boundaries for minimizing numerical reflections - Material property assignment through dielectric constant and conductivity matrices The code development followed rigorous validation procedures against analytical solutions for canonical structures. Primary characteristics include modular architecture for easy parameter modification, parallel computing capabilities for large-scale simulations, and integrated field visualization modules. Potential applications span: - Antenna radiation pattern analysis - Photonic crystal modeling - Metamaterial property verification - Electromagnetic compatibility studies VIP access enables deeper investigation through extended feature sets, including frequency-domain transformation tools, nonlinear material support, and dedicated optimization algorithms for specific structural configurations. This access facilitates comprehensive research opportunities in computational electromagnetics and advanced FDTD methodology development.