Analyzing Specific Absorption Rate (SAR) for a Frequency-Reconfigurable Textenna

This study thoroughly assesses a frequency-reconfigurable circularly polarized textenna crafted from jute material for on-body performance evaluation. This antenna achieves four distinct configurations by leveraging two BAR-64-03W pin diodes. In standalone conditions, In C1 mode it resonates at various frequencies of 2.4, 4.29, 5.78, and 9.39; in C2 it function at 5 and 5.9; in C3 it operates at 4.4 and 5.8 in C3; and in C4 it resonates at 3.5, 4.4, 5.3. CP occurs at frequencies of 2.4, 3.5, 5.8, and 5.9 GHz within these specified setups. SAR (Specific Absorption Rate) assessments were analysed for its performance near the human body to evaluate the antenna's effectiveness in close proximity. Using an HFSS software-based human phantom mimicking muscle, fat, and skin, SAR analysis was performed both with and without the antenna placed on the model. Impressively, the fabricated jute antenna exhibited excellent characteristics even when in contact with the human body. The correlation between the measurement and simulation was notably strong. SAR Inspection demonstrated the viability of this reconfigurable textenna for on-body communication applications, showcasing its effectiveness even at close proximity to human tissue.