A novel design for a coplanar waveguide (CPW) fed folded slot antenna for
wireless local area network (WLAN) application is proposed. The antenna adopted a capacitive-coupled CPW including a cross-shaped feeding line to achieve good impedance matching for dual-resonance mode. The prototype of the antenna design has been constructed and experimentally studied. The measured results show excellent impedance bandwidth (-10dB) at resonant frequencies of 2.4 and 5.6 GHz, respectively, suitable for applications in
the 2.4/5.2/5.8 GHz WLAN communication systems. The result is in good agreement with the simulated data. Also, nearly omni-directional radiation patterns and sufficient antenna gains over the operating bands have been obtained.