Patent ID: 6453150
Filing Date: 2002-09-17
Classification: H04B,H04W

Abstract:
A base station for a communications system of the Time Division Multiple Access/Time Division Duplex type for transmitting and receiving on a specified wavelength, comprising:a plurality of land-based antenna elements, all of which are spaced from each other at intervals greater than half of said specified wavelength; a plurality of antenna couplers, each connected to one of said antenna elements; a digital signal processor; a plurality of analog to digital converters each connected to receive an analog input from of said receivers and also connected to provide a digital output to said signal processor; and a plurality of digital to analog converters, each connected to receive a digital signal from said signal processor and each also connected to provide an analog signal output to one of said transmitters; wherein a transmission signal to be transmitted from each of said antenna elements has a power level corresponding to the power level of the signal received by said each antenna element, wherein said transmission signal to be transmitted from said each antenna element has a phase corresponding to the phase of the signal received by said each antenna element, and wherein transmission signals transmitted from said plurality of antenna elements generate an omni-directional radiation pattern.