Abstract
Most of the communications in the century is accomplished through the wireless medium. There are various standards for simultaneous running of different applications. WLAN (Wireless Local Area Network) is a common wireless communication standard. Among the five bands announced by IEEE in 802.11 standards for wireless LAN, two most common bands are 2.4 GHz and 5.2 GHz. In this paper, an antenna is designed for 5.2 GHz WLAN applications. To remove the problem of mismatching at coaxial feeding, an approach of improving the matching performance is studied. The requirement of impedance matching, gain and bandwidth are studied and performance of the proposed antenna is analysed on the HFSS (High Field Structural Simulator). The proposed antenna has the bandwidth of 223 MHz (5.1005.323 GHz) at -10 dB reflection coefficient and the maximum gain achievable is 5.1719dB. Soft-computing technique is used to optimize the best impedance match at 5.2 GHz.
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