@INPROCEEDINGS {7288,
author={A. A. Moreira and N. Pires and N.  Serro and R.M. Santos},
doi={},
booktitle={European Conf. on Antennas & Propagation - EUCAP},
title={Ultra Wideband Dielectric Sandwich Loaded Antennas},
year={2009},
month={March},
volume={--},
pages={3535 -3538} 
}