The Reduction of Specific Absorption Rate at Different Frequencies

Abstract

This Paper is about the reduction of specific absorption rate (SAR) of wearable rectangular patch antenna for 1.8GHz and 2.45GHz wireless applications. Antenna is designated on a 3mm X 3mm X 3mm resolution truncated Hugo body model in Computer simulation technology software. The ramification reveals the specific absorption rate simulated value that were reduced by 89% compared to previously achieved SAR reduction of 83.5%. A reduction of power absorption was also noticed as the space of patch antenna increased. The SAR of Patch antennas are reduced from 0.0005 to 0.00041 SAR Avg (mW/g) at frequencies of 1.8GHZ & 2.45GHZ respectively resulting in a significant improvement in antenna performance. The improvement in directivity & gain has been observed and bandwidth of about 65% has achieved with Specific absorption rate reduction.