Design of a Triple Band Folded Dipole Antenna with Low SAR for GPS/WLAN Application

This paper presents a triple band folded dipole antenna with low SAR for 1.6 GHz GPS and 2.4/5.8 GHz WLAN applications. The antenna is composed of a monopole, via, two folded dipoles, a slit etched on the folded dipole and a reflector. To obtain the optimized parameters, we used the simulator, Sim4Life and the antenna shows an acceptable radiation pattern along with -10 dB return loss at all three bands. When the input power is 1 W, the maximum value of the SAR
_1g
(1 g-averaged SAR) for 1.6 GHz, 2.4GHz, and 5.8 GHz band was 0.076 W/kg, 0.071 WI kg, and 0.0381 W/kg, respectively. These values are much lower than the international standard values of SAR
_1g
(1.6 W/kg), even though the distance between antenna and head is zero.