FDTD (Finite-Difference Time-Domain) method

The Finite-Difference Time-Domain (FDTD) method is a computational technique used to simulate how electromagnetic waves, like light or radio signals, propagate through different materials. It works by breaking down space and time into small grids and steps, then calculating wave behavior at each point over time. This allows engineers and scientists to predict how waves interact with objects (like antennas or circuits), helping design better devices. FDTD is widely used because it handles complex shapes and materials effectively, providing detailed insights into wave phenomena in a manageable, step-by-step manner.