Numerical Simulation of An Unidirectional Dielectric Radiator

An unidirectional dielectric radiator for antenna is simulated with FDTD method on PC. The radiation pattern is calculated, and numerical results agree with experimental results. The simulation results indicate that this type of model with broad beam-width and good gain gives off radiation only in forward direction, so it can be used in mobile communication handset, anti-collision radar and space power combining circuits.