Patent ID: 6349219
Filing Date: 2002-02-19
Classification: H01Q

Abstract:
A system for sending wireless communication signals on at least one downlink wavelength and receiving wireless communication signals on at least one uplink wavelength, wherein there is a ratio r equal to the larger divided by the smaller of said wavelengths, the system comprising:a receiver operative to receive signals imposed on a carrier having the uplink wavelength; a transmitter operative to transmit signals imposed on a carrier having the downlink wavelength; and an array of independent antenna elements, wherein: the array comprises a first sub-array and a second sub-array; one sub-array is electrically coupled to the transmitter, such that transmitted signals can be radiated therefrom; the other sub-array is electrically coupled to the receiver, such that signals to be received can be extracted therefrom; the sub-arrays are geometrically similar to each other such that they differ in corresponding inter-element spacings by a scale factor equal to r; and the sub-arrays have at least one common antenna element.