Numerical investigation of the effect of a rod dielectric lens on the electromagnetic wave strength using two dimensional FDTD method

Abstract

This paper presents an overview of the performance of a dielectric lens that can be used in wireless broadband communication systems. Dielectric-lens is effective at generating highly shaped beams which enhance the wireless communication systems performance. Beam shaping is used to reduce multipath interference and to enhance gain, so that the received power level is compatible with the requirements of high-data-rate transmission. To investigate the gain, two dimensional Finite Difference Time Domain method (FDTD) was performed. The rods dielectrics are arranged in shape of semi circles and located in the physical domain to act as dielectric lens with permittivity constant 2. The result shows that when a plane wave propagates in free space and passing through rod dielectrics lens, the wave is reshaped and more concentrated.