Design of Reconfigurable Microstrip Patch Antenna for WLAN Application
In this paper we propose a rectangular microstrip patch antenna with inset fed which can operate at 2.4 GHz (IEEE 802.11b) & 5.8 GHz (IEEE 802.11a) WLAN applications. Various slot is cut into the antenna structure which changes the surface current path resulting in dual resonant frequency. Further by embedding any switch into a slot, reconfiguration can be achieved i.e. the antenna can only be used in unlicensed 2.4 GHz band. The achieved directivity is greater than 5db and the bandwidth obtained is much greater than the required bandwidth. The proposed antenna is simulated using High Frequency Structure Simulator. KeywordsReconfigurable microstrip patch antenna, slots, switches, dual band, resonant frequency.