Abstract
The article reveals the design of a metamaterial cell inspired triple band antenna for DCS 1800, PCS 1900, WCDMA, Bluetooth, WLAN 2400, WiMAX 2.5, and WLAN 5 GHz frequency band applications. The overall antenna size is 48 x 48 x 1.575 mm(3) where the electrical dimension is 0.26 x 0.26 x 0.0084 at 1.6 GHz lower frequency band. The proposed antenna consists of a microstrip feed line and metamaterial unit cell providing a negative index of refraction, which indicates both negative magnetic value of permeability and negative electrical value of permittivity. The proposed antenna achieves triple -10 dB measured impedance bandwidth of 370 MHz (1.6-1.97), 380 MHz (2.34-2.72), and 1.48 GHz (3.89-5.37). The measured gain of the proposed antenna at 1.9 GHz is 1.64 dB, 2.45 GHz is 2.07 dB, and 5 GHz is 4.06 dB with radiation efficiency of 66.2%, 77.15%, and 87.6%, respectively. (c) 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:263-267, 2016