SAR Analysis of UWB Antennas for Wireless Body Area Network Applications
This work presents the design and development of a miniaturized compact UWB antenna for wireless body area networks (WBANs). The working of ultra-wideband (UWB) antennas and their notch characteristics are explained by considering several cases. First we consider a simple rectangular micro strip patch antenna and then improve its bandwidth by applying available UWB techniques; additionally, we discuss UWB antennas in WBANs and the importance of having band rejection characteristics. We consider another fractal-based miniaturized UWB antenna with notch characterizes using metamaterial-based unit cells etched from either ground or radiating elements to act as a filter section. Comparative illustrations are given with the help of reflection curves, voltage standing wave ratio, and specific absorption rate analysis.
KeywordsWBAN Miniaturization Fractal geometry Metamaterial DGS SAR
We thank the Defense Research and Development Organisation (DRDO), India, for supporting this work through Research Grant NO.ERIP/ER/1503211/M/01/1703.