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A Compact UWB Antenna for On-Body Applications

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4 Author(s)
Chahat, N. ; Inst. of Electron. & Telecommun. of Rennes (IETR), Univ. of Rennes 1, Rennes, France ; Zhadobov, M. ; Sauleau, R. ; Ito, K.

A new compact planar ultrawideband (UWB) 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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Antennas and Propagation, IEEE Transactions on  (Volume:59 ,  Issue: 4 )