Shu, P.-L.; Feng, Q. Y.
December 2012
Progress in Electromagnetics Research C;2012, Vol. 32, p53
Academic Journal
A compact coplanar waveguide (CPW)-fed printed monopole antenna comprising of two symmetrical C-shaped radiating elements, a parasitic E-shaped strip, and a truncated CPW ground for WLAN/WiMAX applications is proposed. By embedding a parasitic E-shaped strip inside the two symmetrical C-shaped radiating elements, four resonant frequencies and three operating bands are obtained. By etching two quarter-circles in the CPW ground, impedance matching condition of the third operating band is significantly improved. A prototype of the proposed antenna has been constructed and experimentally studied. The measured results show that three distinct operating bandwidths with 10 dB return loss are about 500MHz (2.33-2.83GHz), 700MHz (3.27-3.97GHz) and 2.37GHz (4.3-6.67GHz), covering all the 2.4/5.2/5.8GHz WLAN and 2.5/3.5/5.5GHz WiMAX bands. Furthermore, the antenna has a simple planar structure and a small volume of only 31 x 21 x 1:6mm³. Good radiation characteristics and acceptance peak realized gains are obtained over the operating bands.


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