Satixfy UK Limited

Divaydeep Sikri

Doron Rainish

Mario Rui Silveira Pereira

Janosevic Zoran

Moche Cohen

Eran Broner

A control system is presented for controlling operation of a phased-array antenna comprising N antenna elements each comprising H and V polarization terminals. The control system includes: an analogue circular polarization system (ACTS) and a digital polarization control system (DPCS). The ACPS comprises an array of N analogue circular polarization circuits (ACPCs) associated with said N antenna elements, respectively, such that each ACPC is connectable to the V and H polarization terminals of the respective antenna element. The ACPS is configured and operable with N analog circular polarization signal components each being either left or right circular polarization signal. The DPCS comprises: an array of N convertors associated with said N ACPCs, respectively, for converting between the N analog circular polarization (ACP) signals and N respective digital circular polarization (DCP) signals, such that each antenna element is associated with a respective single one of said N convertors; an array of N digital polarization controlled beamformers (DPCBs) connectable to said N convertors; and a plurality of digital signal splitters and/or combiners. Each DPCB comprises at least two beam forming channels associated with at least two, first and second, respective beams of different beam directions and/or different polarizations being operated by the antenna element, and is configured and operable to apply phase shifting to the respective DCP signal based on data indicative of a beaming direction (α) of a respective beam to be operated and the left or right polarization of circular polarization signal, and a relative phase (Φ) associated with the beaming direction (α) 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. Digital signal splitters and/or combiners operate to separately combine the phase shifted signals corresponding to respectively the at least first and second beams, wherein at least two convertors of said N convertors are connected to a respective one of the signal splitters and/or combiners, and wherein each digital splitter and/or combiner, connected to the at least two converters, converts between the DCP signals of opposite left and right circular polarizations of the at least two convertors and V and H linear polarization components and splits and/or combines the opposite left and right circular polarization signals of the at least two convertors.

Phased array antenna and system and method of antenna operation

A method and system/circuit for multi-beamforming signal processing are provided. The circuit includes a plurality of basic modules associated with a plurality of transducers. Each basic module includes a first and second processing stages operative for introducing time delays of higher and lower temporal resolutions to the signals processed thereby respectively, and a path selector multiplexer module managing the signal coupling between the first and second stages. The first processing stage is connectable to one of the transducers via a first port and includes a network of first type time delay channels defining L signal paths operative at a relatively high sampling rate and adapted for providing L respectively different time delays of high temporal resolution. The second processing stage includes an array of N second type time delay channels operable for shifting signals processed thereby by any number up-to K samples of a lower sampling rate.

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Sutton, United Kingdom

Divaydeep Sikri