Wideband antenna using unsymmetrical planar elements and performance

The wideband antenna applied to PCMCIA card terminal for WiMAX and wireless PAN has been successfully developed. This antenna consists of the unsymmetrical planar elements, which is made of the printed circuit board, and can be operated from 2.5 GHz to 4.8 GHz. The radiation patterns are appropriately formed omnidirectional. This paper introduces its novel construction and the performances of the trial antenna.