Patent ID: 11894615
Assignee: SATIXFY UK LIMITED
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A control system for controlling operation of a phased-array antenna comprising N antenna elements each comprising H and V polarization terminals, the control system comprising:
an analogue circular polarization system comprising an array of N analogue circular polarization circuits associated with said N antenna elements, respectively, each analogue circular polarization circuit being connectable to the V and H polarization terminals of the respective antenna element, and being configured and operable for receiving H and V polarization components of the respective antenna element as a circular polarization signal being either left or right circular polarization signal, and
a digital polarization control system comprising:
an array of N A/D convertors associated with said N analogue circular polarization circuits, respectively, for converting, respectively, the N analog circular polarization signals into N respective digital circular polarization signals such that each antenna element is associated with a respective single one of said N A/D convertors;
an array of N digital polarization controlled beamformers connectable respectively to said N A/D convertors, each digital polarization controlled beamformer comprising at least two beam forming channels for receiving, by the antenna element, at least two, first and second, respective beams of different beam directions and/or different polarizations, each of said at least two beam forming channels being configured and operable to apply phase shifting to the respective digital circular polarization signal based on data indicative of a beaming direction (α) of a respective beam to be received thereby and the left or right polarization of circular polarization signal, and a relative phase (ϕ) associated with the beaming direction and a location of the respective antenna element in the array, to thereby form at least two phase shifted signals corresponding to said at least two, first and second, respective beams; and
a plurality of digital signal combiners configured and operable for separately combining the phase shifted signals corresponding to respectively the at least first and second beams, wherein at least two convertors of said N A/D convertors are connected to a respective one of the digital signal combiners, and wherein each of said digital signal combiners is configured and operable for converting the digital circular polarization signals of opposite left and right circular polarizations of the at least two A/D convertors into V and H linear polarization components and combining the opposite left and right circular polarization signals of the at least two convertors.