Filtering antenna for Wlan application

Abstract

This project presents the performance enhancement of an integrated circular filter antenna with resonator at operating frequency of 5.8 GHz. The integrated circular filter antenna with resonator provided the better selectivity as well as in bandwidth compared to the conventional microstrip patch antenna. A T-shape radiating patch is utilized as resonator. The integration of T-shape filter and circular microstrip antenna achieved the improvement of the selectivity and the gain. The simulation of the integrated circular filter antenna is done by using CST Microwave Simulation software tool. The result obtained for the value of the reflection coefficient is below the -10dB within the rage of frequencies 5.70 GHz to 5.88 GHz. The integrated circular filter antenna is suitable use in the modern radar and wireless communication devices.