Internal cellular/WLAN combo antenna for laptop-computer applications

Two internal antennas for cellular (GSM/DCS) and WLAN dual-network operations are combined in an arrangement with optimized isolation for laptop-computer applications. The two antennas are formed into a combo antenna and can be mounted at the top edge of the supporting metal frame of the display of a laptop computer as internal antennas. The impedance and isolation characteristics of the proposed cellular/WLAN combo antenna with various possible arrangements are studied, and the optimized isolation for frequencies over the GSM (890–960 MHz), DCS (1710–1880 MHz), and WLAN (2400–2484/5150–5350/5725–5825 MHz) bands is analyzed. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 402–406, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21182