Dual-band planar inverted-F antenna for application in ISM, HIPERLAN, UNII, and WiMAX

In this paper, the simulation and measurement results of dual-band planar inverted-F antenna for application in ISM, HIPERLAN, UNII, and WiMAX bands were presented. The dual-band planar inverted-F antenna was fabricated on a FR4 substrate. The lower band was associated with the longer open strip while the upper band was associated with the shorter open strip of the proposed dual-band planar inverted-F antenna. The proposed antenna had good agreement between the measurement and simulation results in return loss. The proposed antenna had a 10 dB return loss with bandwidth 350 MHz (2, 294-2,644 MHz) in the lower band and 1,237 MHz (4,694-5,931 MHz) in the upper band. The proposed dual-band planar inverted-F antenna covered the ISM, HIPERLAN, UNII, and WiMAX bands. The maximum antenna efficiencies are -0.83 dB and -1.49 dB at 2.45 and 5.45 GHz, respectively.