FDTD Calculation of Two-Dimensional Electromagnetic Pulses

This source code implements the Finite-Difference Time-Domain (FDTD) method for calculating two-dimensional electromagnetic pulses. The implementation features Gaussian-modulated pulses, which are particularly useful in various electromagnetic applications. The code structure includes key components for electromagnetic simulation: - Yee grid implementation for spatial discretization of electric and magnetic fields - Gaussian pulse generation function with customizable amplitude, center frequency, and modulation parameters - Perfectly Matched Layer (PML) boundary conditions to minimize reflections - Field update equations based on Maxwell's curl equations By modifying pulse parameters such as amplitude, frequency, and phase through input variables, users can observe how these changes affect electromagnetic wave propagation and system response. The code also supports visualization of field distributions over time, enabling detailed analysis of pulse behavior and interactions. This implementation serves as a valuable tool for designing and optimizing electromagnetic pulse-related devices and systems, including antennas, waveguides, and microwave components. The modular code structure allows for easy extension to include additional features like different source types or material properties. Key functions include: - initialize_grid() for setting up computational domain parameters - update_electric_field() and update_magnetic_field() for time-stepping field components - gaussian_source() for generating modulated pulse excitation - boundary_conditions() for implementing absorbing boundaries The source code provides significant value for electromagnetic research and practical applications, offering a foundation for studying pulse propagation characteristics in complex media and structures.