Patent ID: 6697641
Filing Date: 2004-02-24
Classification: H01Q,H04B,H04W,Y02D

Abstract:
A modular cellular wireless communication base station comprising:a plurality of pairs of respectively orthogonal polarization antennas, each pair having a respective location, a plurality of active radiator modules located each at one of said respective antenna pair locations, each module associated with antenna pair corresponding to said location, for each antenna a transmitter comprising a power amplifier, and a receiver; for each module a beam-forming network controlling relative amplitudes and phases of each of said modules; an RF front end for transmitting over a low power link with said plurality of active radiator modules via said beam forming network and for receiving over a lower power link via a low noise amplifier; and a delay diversity module, located to operate on a low power signal prior to amplification by a respective one of said power amplifiers, that provides a transmission CDMA delay diversity.