Abstract
A novel tri-band printed monopole antenna with an etched \-shaped slot and a parasitic ring resonator is proposed for satisfying wireless local area network (WLAN) and worldwide interoperability for microwave access (WiMAX) applications simultaneously. The proposed antenna comprises a rectangular radiation patch with an arc- shaped edge and an embedded \-shaped slot on the top and a parasitic ring resonator on the opposite side. The measured results show that the impedance bandwidths of the proposed antenna, deflned by voltage standing wave ratio (VSWR) • 1:5, are 350MHz (2370{2720MHz), 680MHz (3390{4070MHz) and 1080MHz (4920{6000MHz), which cover the required bandwidths for both WLAN (2400{2480MHz, 5150{5350MHz, 5725{5825MHz) and WiMAX (2500{2690MHz, 3400{3690MHz, 5250{5850MHz) applications. Furthermore, good monopole-like radiation characteristics with moderate peak gains are obtained over the operating bands.
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