Planar Compact Inverted-F Antenna for Wireless Wide Area Network Operation in the Laptop Computer

A compact antenna capable of generating two wide operating bands to cover the GSM850/900 (824-960MHz) and GSM1800/1900/UMTS (1710-2170MHz) systems is presented. The antenna occupies just 81.5(L)×7(W)×0.5(H)mm3 on the top edge of the supporting metal frame of the display panel, and is therefore easily embedded in the ultra-thin laptop computers as an internal antenna. The antenna is implemented using a ceramic substrate and consists of multi-branch strips. Based on the principle of the inverted-F antenna, our design yields two operating bands covering 816-983MHz and 1703-2196MHz can be achieved with good radiation performance for our design. The proposed antenna is thus suitable to be installed in the ultra-thin laptop computers for Wireless Wide Area Network applications.