SAR Analysis of Jute Substrate based Tri-bandAntenna for Wearable Applications

In this communication, a textile-based circularly polarized monopole antenna was developed on jute material. The propounded textile antenna functions in the tri bands of WiMAX, WLAN, and ISM bands at the frequencies of 3.5, 4.9, and 5.8 GHz. This design was also resonating with the circular polarization. The proposed antenna was fabricated on the jute fabric and has shown an excellent characteristic in terms of resonating frequencies and axial ratios. The proposed antenna aims to work in the nearness of the human; for that purpose, we also investigated the antenna’s performance by employing it on the human body. The on-body simulation analysis was performed on a three-layer body phantom model, which was developed by considering the electrical characteristics of muscle, fat, and the skin. A good agreement in terms of the operating frequencies was observed between the measurement values in stand-alone conditions and on body placement. Specific Absorption Rate (SAR) investigation was also performed on both 1 gram and 10 grams of tissue. The results obtained from the simulation are within the SAR standards’ limits, which shows the textile antenna’s excellent performance.