A Compact CPW-Fed Tri-Band Antenna for WLAN/WiMAX Applications
[1]
Jun Li, Ministerial Key Laboratory of JGMT, Nanjing University of Science and Technology, Nanjing 210094, China, Huawei Technologies Co., Ltd., Shanghai 200121, China.
[2]
Shan Shan Huang, Ministerial Key Laboratory of JGMT, Nanjing University of Science and Technology, Nanjing 210094, China, Spreadtrum Communications Inc., Shanghai 201203, China.
[3]
Jian Zhong Zhao, Ministerial Key Laboratory of JGMT, Nanjing University of Science and Technology, Nanjing 210094, China.
In this paper, A novel compact co-planar waveguide (CPW)-fed tri-band antenna with dual band-notched characteristic is proposed. This antenna consists of a circular element, two inverted L-shaped slots, and a T-shaped slot etched into the circular element, which lead to the desired high attenuation at the two notch frequencies: 2.56 GHz – 3.25 GHz and 3.8 GHz – 4.96 GHz. The proposed tri-band antenna is CPW-fed and printed on an low-cost FR-4 substrate with only 20 mm × 28 mm surface area. The antenna is successfully simulated by the full-wave electromagnetic (EM) simulator HFSS and measured to cover the bandwidth for WLAN and WiMAX (2.40 GHz – 2.54 GHz, 3.24 GHz – 3.76 GHz, 4.96 GHz – 6.65 GHz) applications. Experimental results show that, the proposed tri-band antenna is obtained with promising performances, including omnidirectional radiation patterns and stable gains across its whole operation bands.
CPW-Fed, Microstrip Antenna, Tri-Band Antenna, WLAN/WiMAX
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