Improving the Efficiency of Small Planar Dipole Antenna with the Crescent-Shaped Corner Reflector based on Epsilon Negative Medium using Particle Swarm Optimization

摘要

This paper presents the improvement of the directivity of a small planar dipole antenna (SPDA) operating in X band at 10 GHz with a crescent-shaped corner reflector using particle swarm optimization. The corner reflector is designed by using Epsilon Negative Medium concept. The simulation results using High Frequency Structure Simulator (HFSS) show that, by particle swarm optimization, the gain of small planar dipole antennas with crescent-shaped Corner Reflector increases by 4.6639 dB. The mainbeam is in the direction of theta =phi = 0 degree, with Front to Back Ratio is 5.7318. The return loss of a SPDA is lower than -20 dB by -22.5936 dB.