Performance analysis of swastika slot UWB antenna in vicinity of dispersive human layered tissue model

Ultra-wideband (UWB) technology, standardized by IEEE 802.15.6 TG-6 for ultra-low power consumption, is one of the fastest growing technologies for short range communications. In this paper, we propose a novel swastika slot UWB antenna for body-worn communication in Wireless Body Area Networks (WBAN). This paper investigates the effect of antenna-body gap in terms of reflection coefficient, real and imaginary part of input impedance, group delay, Voltage Standing Wave Ratio (VSWR), and radiation patterns in free space and modeled layered human body tissue phantom. The antenna designed in such a way that it can give good performance over free space as well as over modeled human tissue phantom without any prerequisite. The entire observation will carried out at three different frequencies: 5.5 GHz, 7.5 GHz and 9.5 GHz.