Design and Analysis of a Dual band flexible PIFA Antenna for Wearable Applications

The increasing use of antennas in the biomedical domain is transforming healthcare by facilitating advanced communication and monitoring capabilities in medical devices. Specifically, the Planar Inverted-F Antenna (PIFA) has solidified its position in diverse biomedical applications due to its compact and low-profile characteristics. This paper presents the design of a dual-band PIFA antenna. The proposed design is compact and simple in design with a size of 50×30×3 mm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup>. The antenna resonates at the frequencies of 3 GHz and 5.3 GHz. The resonant frequencies have been tuned by employing reactive loadings with the use of shorting pin and slots. Also, the ON body characterization of the antenna has been performed on human skin phantom model with pre-defined dielectric properties.