Abstract: A design of dual-band monopole antenna fed by a coplanar waveguide (CPW) for wireless local area network(WLAN) applications is presented. The antenna has resonances at 2.45 and 5.5 GHz with (10 dB) impedance bandwidths from2.40-2.52 GHz and from 4.80-7.30 GHz which cover the 2.4/5.2/5.8 GHz WLAN operating bands. Also, good omni-directionalradiation patterns and antenna gains over the operating bands have been obtained.