DESIGN OF SMALL ACS-FED BANDNOTCH UWB MONOPOLE ANTENNA USING PARTICLE SWARM OPTIMIZATION

摘要

This article presents, asymmetric coplanar strip fed half monopole UWB antenna to cover the ultra-wideband frequency operation. The antenna has staircase shape and very small volume (12 × 21 × 1 (mm)~3). The band-rejection operation achieve at the WLAN (5.15-5.85 GHz) band by adding spiral defected radiator structure. Particle swarm optimization algorithm is employed to achieve ultra-wide band and band-rejection characteristics. The measured frequency response shows an impedance bandwidth of 9 GHz or 120% over 3-12 GHz for VSWR < 2.