Multi-element patch antenna integration into laptops for multi-standard applications

In this paper we present an integration procedure of low profile microstrip planar antennas into laptop computers. An antenna system has been designed to be accommodated in the space available behind the LCD matrix of a 14" screen size laptop. A prototype of a multi-element antenna arrangement with a total of 19 elements has been designed, fabricated and tested. It can be used in the GSM1800, UMTS, IEEE 802.11b/Bluetooth and HiperLAN2 standards. The radiation pattern, the input reflection coefficient and the mutual coupling between elements indicate that such a system can be used for multi-standard operation.