Band Notched UWB Antenna for Wireless Body Area Network

Wireless Body Area Network (WBAN) is an emerging technology that has a broad range of applications such as health care and personal entertainment. The human body is a hostile environment from radio propagation perspective and it is therefore important to design an antenna which has very less biological effects. In this paper, a simple band notched UWB antenna for WBAN is proposed which shows sufficient impedance bandwidth, high radiation efficiency and near omni directional radiation pattern. The proposed antenna operates in lower and upper Ultra-Wideband (UWB) bands and it rejects unwanted band ranging from 4.74-6.22 GHz. As a result there is no external filters required and it simplifies the UWB system design to a great extent. The geometry of the antenna is optimized. Proposed antenna has very low Specific Absorption Ratio (SAR) value(<;10dBm) and hence it has very less biological effects on the human body.