Design of a fully textile dualband patch antenna using denim fabric

The design of a compact, flexible and wearable dual band monopole patch antenna is presented. The antenna has low profile and printed on common denim fabric (60 mm × 60 mm × 1 mm) with permittivity (1.7) and loss tangent (0.024). The performance of the fabricated unit is observed under different deformations in free space as well as when placed on different parts of human body. The antenna has presented durability and robustness with only slight differences in measured return losses when placed in proximity to human body. Simulations for 10 g average Specific Absorption Rate (SAR) is performed for different input powers up to 100 milliWatt. Simulated SAR is increasing by increasing the incident power, as well as the skin tissue is the most affected part of the body.