Swastika slot UWB antenna for body-worn application in WBAN

Advances in sensing, computing and communication technologies coupled with the need of cost reduction, and level of comfort have led to the development of Wireless Body Area Networks (WBAN). Ultra-wideband (UWB) technology is one of the fastest growing technologies for WBAN. The increasing demand of compact size, portable, body-worn, and lightweight electronic devices for the WBAN applications requires the design of miniature antennas. Therefore, in this paper, we present a novel swastika slot UWB antenna with the concept of modified ground plane. Furthermore, a swastika slot UWB antenna and its radiation characteristics over free space and body-worn (human phantom model) scenarios are simulated for WBAN applications. The antenna designed in such a way that it can give acceptable performance both over free space as well as body-worn scenarios without any prerequisite. Most importantly, we have analyzed the effect of specific absorption rate (SAR) on the human body due to the radiation of UWB antenna, considering the human body as homogeneous and layered heterogeneous phantom models.