Design of a Open loop resonator based filter Antenna for WiFi applications

In this paper, an Open loop resonator based filter Antenna is presented. The proposed antenna is a combination of Square open loop resonator with a rectangular patch. The filter is designed to have a pass band at 2.45GHz. The influence of geometric parameters on filter characteristics is studied in detail. The antenna is placed as a second resonator, thus combining filtering and radiating functions. As the antenna resonant frequency encompasses with the filter band pass, the antenna characteristics are not altered. The proposed structure is of reduced size and cost effective as two components are combined together. The variation of filter and antenna characteristics with geometric parameters are analyzed and optimized results are obtained.