?url_ver=Z39.88-2004&rft_id=PQ+ETD%3A593562&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=De+Witte%2C+E&rft.aulast=De+Witte&rft.aufirst=E&rft.degree=Doctoral&rft.date=31+March+2007&rft.inst=UCL+(University+College+London)&rft.tpages=323&rft.title=Design+and+development+of+spherical+array+antennas