CST – Computer Simulation Technology

A Compact UWB Antenna for On-Body Applications
Nacer Chahat, Maxim Zhadobov, Ronan Sauleau, Koichi Ito
IEEE Transactions on Antennas and Propagation
Volume: 59, Issue: 4, April 2011
1123 - 1131
Body-area network (BAN), body-centric wireless communications, compact antenna, printed antenna, ultra-wideband (UWB) antenna
A new compact planar ultra-wideband antenna designed for on-body communications is presented. The antenna is characterized in free space, on a homogeneous phantom modeling a human arm, and on a realistic high-resolution whole-body voxel model. In all configurations it demonstrates very satisfactory features for on-body propagation. The results are presented in terms of return loss, radiation pattern, efficiency, and E-field distribution. The antenna shows very good performance within the 3-11.2 GHz range, and therefore it might be used successfully for the 3.1-10.6 GHz IR-UWB systems. The simulation results for the return loss and radiation patterns are in good agreement with measurements. Finally, a time-domain analysis over the whole-body voxel model is performed for impulse radio applications, and transmission scenarios with several antennas placed on the body are analyzed and compared.

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