Letizia, M.Zürcher, J-F.Fuchs, B.Mosig, J. R.Skrivervik, A. K.2011-10-122011-10-122011-10-122011https://infoscience.epfl.ch/handle/20.500.14299/71535Circularly polarized multi-beam lens antenna system for High Altitude Platforms (HAPS)text::conference output::conference proceedings::conference paper