An antenna feed system capable of simultaneously transmitting and receiving in multiple frequency bands. In one embodiment, the feed system comprises a non-collimating lens attached to the emitting end of a broad-band antenna feed. The lens is positioned to receive and focus the broad-band wireless signals...http://www.google.es/patents/US6441793?utm_source=gb-gplus-sharePatente US6441793 - Method and apparatus for wireless communications and sensing utilizing a non-collimating lens
Method and apparatus for wireless communications and sensing utilizing a non ...
