Compact Dual – Band Antenna for 2.4/5.2/5.8-GHz WLAN Applications

A compact dual – band antenna for 2.4/5.2/5.8-GHz wireless local area network (WLAN) applications ispresented. The antenna consists of two elements, a C shapedelement and a E shaped element. Both of these elements result inexcitation of two resonant modes for dual – band operation. TheC shaped element is fed directly with coaxial probe. The Eshaped element is coupled with ground plane using a connectingcylindrical via. A thorough parametric study is performed tooptimize the antenna performance. The designed antennaprovides bandwidths of about 114MHz (2.32GHz – 2.46GHz) over the lower band and 2.58GHz (4.48GHz – 7.46GHz) over theupper band covering the WLAN frequencies. The antennaradiation pattern shows a broadside pattern over entirebandwidth with maximum gain of about 1.5dBi. The size of theantenna is reduced by 50% in terms of area compared to theprevious research.