Directive array based pattern reconfigurable antenna

In this paper, a high-gain pattern reconfigurable antenna system is presented. It consists of one driven monopole antenna at the centre, which is surrounded by six parasitic elements. Each parasitic element made up of metallic strip, loaded with switch and backed by dielectric layer. Parasitic elements will behave like transparent and opaque surface to a vertically polarized incident wave for OFF and ON states of switch respectively. Therefore entire assembly becomes reconfigurable and beam steering is achieved. Proposed antenna offers a high and uniform gain of ~ 8 dBi with beam steering along the entire azimuth plane. The simulation has been carried out for ISM band (fr=2.45 GHz) using CST Microwave studio software.