COMPACT DUAL-WIDEBAND ANTENNA FOR WLAN/WiMAX APPLICATIONS

A compact CPW-fed dual-wideband antenna formed by a rectangular ring monopole and a rectangular monopole is presented. The measured 10 dB bandwidths for return loss are achieved to be 46.3% (2.36-3.78 GHz) and 31.4% (5.1-7 GHz) in the lower and upper band, respectively, covering all the 2.415.215.8 GHz WLAN bands and the 2.5/3.5/5.5 GHz WiMAX bands. Further, the proposed antenna has a simple planar structure and occupies a small size of 28 x 36 mm(2), including the finite ground CPW feeding mechanism. Good monopole-like radiation characteristic are obtained over the operating bands. (C) 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1228-1231, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25156