WWAN antenna for handset application

In this study, a hexa-band antenna for mobile phone has been developed for low specific absorption rate. The proposed antenna has a simple structure comprising of two folded strips and a rectangular ground plane. The antenna has been designed to cover six bands which are GSM850/900 (824-960 MHz), DCS 1800 (1710-1880 MHz), PCS 1900 (1850-1990 MHz), UMTS (1920-2170 MHz), and ISM 2450 (2400-2485 MHz). The designed antenna only occupies a small area of 50×20 mm² on the system circuit board. By adjusting the strip length, the SAR is effectively reduced over all of the bands. The antenna is a promising candidate for incorporation into smart phones.