High-Directivity Antenna for Low-UWB Body Area Networks Applications

Novel antenna operating at the Low-UWB band BAN (Body Area Network) is presented in this paper. Basically, the antenna offers an omnidirectional radiation pattern without the cavity presence. However, the proposed antenna changes the radiation behavior to directional radiation pattern with 5.5 dBi increase in gain by introducing an air cavity. The antenna performances were assessed in free-space and simulations were carried out by CST Microwave Studio software. The detailed antenna study shows that the proposed antenna could be considered a good on-body antenna for Low-UWB applications, in particular for Wireless Capsule Endoscopy (WCE) localization.