Design of triple-band T-U-shaped CPW-FED slot antennas

A triple-band coplanar waveguide (CPW)-fed slot antenna design for wireless/mobile communication applications is proposed. This antenna is designed on single-layer PCB FR4 substrate with permittivity epsilon(r) = 4.4, loss tangent tan delta = 0.0245, and thickness h = 1.6 mm. The antenna consists of T-shaped signal strip and U-shaped conducting strip in the upper side of T-shaped signal strip. With the simple tuning slot parameters of the ground plane, the proposed antenna is suitable for WLAN 2.4/5.2/5.8, WiMAX 2.5/5.5, and WCDMA 1.92-2.17 GHz operations. The -10 dB bandwidth of the proposed antenna from measurement is 0.85 GHz (1.9-2.75 GHz) in the lower frequency band and 3.1 GHz (3.65-6.75 GHz) in the upper frequency band. The detailed analysis of geometrical parameter has been studied to optimize the performance of the designed antenna. The antenna size of radiation area and ground plane is 50 x 50 mm(2). The measured results show a good agreement with the simulated results. (c) 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:844-848, 2014