Stepped Patch Antenna for GSM Applications

The stepped shaped patch antenna is designed for GSM applications. The proposed antenna resonates at 900 MHz with -10 dB impedance band of 874-958 MHz. The gain of proposed antenna varies from 1.6-1.9 dBi in presented band. The radiation and total efficiencies of the stepped patch antenna is more than 65% is observed in proposed band. The size of the antenna is 72.9 x 96.9 x 1..524 mm
³
. The radiation impact on biological tissues is analyzed by parameter specific absorption rate (SAR) and found the value < 1.0 W/kg near the human head and ear.