Title Band-Limited Angular Spectrum Method for Numeric al Simulation of Free-Space Propagation in Far a nd Near Fields

A novel method is proposed for simulating free-space propagation. This method is an improvement of the angular spectrum method (AS). The AS does not include any approximation of the propagation distance, because the formula thereof is derived directly from the Rayleigh-Sommerfeld equation. However, the AS is not an all-round method, because it produces… CONTINUE READING