Patent ID: 6275482
Filing Date: 2001-08-14
Classification: H01Q,H04W

Abstract:
In a CDMA mobile radio communication system, a base station for communicating with a plurality of mobile transceivers comprising:a first diversity narrow beamwidth antenna element arranged to receive CDMA signals transmitted from mobile transceivers located in a predetermined geographic coverage area;a second diversity narrow beamwidth antenna element arranged to receive CDMA signals transmitted from mobile receivers located in the same predetermined geographic coverage area as said first antenna element, wherein said first and second antenna elements are oriented so that respective peak boresights form a 45 to 60.degree. angle with respect to each other while being slanted 22.5 to 30.degree. with respect to a boresight of the coverage area, and are separated in distance by a plurality of wavelengths and provide a sector crossover point between element pairs which is 3-5 Db down from a peak beam gain; anda receiver comprising a signal combiner for combining the outputs of said first and second antenna elements, wherein said signal combiner continuously provides the best qualitative signal to said receiver.