A COMPACT G-SHAPED DUAL-BAND ANTENNA FOR WLAN/WI-MAX AND RFID APPLICATIONS

In this paper a G-shaped dual-band monopole antenna with a shorted strip fed by a coupling microstrip line for wireless communication in the wireless local-area network (WLAN) band is studied. The proposed antenna can provide two separate impedance bandwidths of 510MHz (2.29GHz-2.8GHz) and 1.9GHz (4.73GHz-6.65GHz) respectively. Consistent omniderectional radiation patterns have been observed in both the frequency bands 2.4GHz and 5.5GHz. The proposed antenna is simple in design and compact in size. It exhibits broadband impedance matching, consistent omnidirectional patterns and appropriate gain characteristics (>2.8dBi) in the RFID and WLAN/Wi-MAX frequency regions