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2010-09-27
Compact Wide-Slot Tri-Band Antenna for WLAN/WiMAX Applications
By
Progress In Electromagnetics Research Letters, Vol. 18, 9-18, 2010
Abstract
In this paper, a wide-slot triple band antenna fed by a coplanar waveguide (CPW) for WLAN/WiMAX applications is proposed. The antenna mainly comprises a ground with a wide square slot in the center, a rectangular feeding strip and two pairs of planar inverted L strips (PIL) connecting with the slotted ground. By introducing the two pairs of PIL's, three resonant frequencies, 2.4/5.5 GHz for WLAN, and 3.5 GHz for WiMAX, are excited. Prototypes of the antenna are fabricated and tested. The simulated and measured results show that the proposed antenna has three good impedance bandwidths (S11 better than -10 dB) of 300 MHz (about 12.6% centered at 2.39 GHz), 280 MHz (about 8% centered at 3.49 GHz) and 790 MHz (about 14.5% centered at 5.43 GHz), which make it easily cover the required bandwidths for WLAN band (2.4--2.48 GHz, 5.15--5.35 GHz, and 5.725--5.825 GHz) and WiMAX (3.4--3.6 GHz) applications. Moreover, the obtained radiation patterns demonstrate that the proposed antenna has figure-eight patterns in E-plane, and is omni-directional in H-plane. The gains of the antenna at operation bands are stable.
Citation
Qing Zhao, Shu-Xi Gong, Wen Jiang, Bin Yang, and Jun Xie, "Compact Wide-Slot Tri-Band Antenna for WLAN/WiMAX Applications," Progress In Electromagnetics Research Letters, Vol. 18, 9-18, 2010.
doi:10.2528/PIERL10081601
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