@INPROCEEDINGS {2720,
author={J.R. Costa and M. G. Silveirinha and C. A. Fernandes},
doi={},
booktitle={ESA Antenna Workshop on Space Antenna Systems and Technologies},
title={Design and Analysis of Double-Shell Axial-Symmetric Integrated Lens Antennas for Space Applications},
year={2005},
month={June},
volume={2},
pages={865-872} 
}