Dual-band Planar Inverted F Antenna with parasitic element for LTE and WiMAX mobile communication

In this paper, a new conception of dual-band Planar Inverted F Antenna (PIFA) for mobile communication application purposes have been staged. The dual- band antenna is designed by introducing a rectangular form of parasitic element which is located under the main radiating patch of the PIFA in order to attain a dual-band operating frequencies. This dual-band PIFA can be operated at two different operating frequencies which are 2600 MHz for Long Tem Evolution (LTE) Band 7and 3500 MHz for WiMAX application. The antenna is made up from rectangular planar element located above the Flame Retardant 4 (FR4) dielectric substrate and the shorting plate that connect between the top radiating patch to the ground plane. The ground plane is positioned along the bottom side of the substrate. The overall dimension of this antenna is 17.8 mm × 16.5 mm and the height of the antenna is 5 mm. The simulated radiation pattern shows nearly omni-directional with obtaining a gain antenna of 4 to 5 dBi at two different operating frequencies. The antenna design in term of antenna structure, return loss, far field radiation pattern,VSWR and antenna gain are presented in this paper.