ADAPTIVE RECEIVING ANTENNA SYSTEM OF ULW-SW RANGE BASED ON SDR TECHNOLOGY Russian patent published in 2022 - IPC H01Q7/06 H01Q3/24 

FIELD: radio engineering; communication.

SUBSTANCE: invention relates to radio engineering and communication; it can be used on surface ships, submarines, and coastal radio centers for provision of adaptive reception of signals in ULW-SW ranges. An adaptive receiving antenna system contains antenna elements made in the form of magnetic frames, controlled attenuators, low-noise broadband amplifiers, analogue-to-digital converters, units for formation of signal quadrature components, and optical transceivers. Together, they form N antenna units. Next, optical transceivers are connected to an optical multiplexer, which allows for transmission of digitized signals in a compressed range via one fiber-optic communication line through an optical demultiplexer to optical transceivers, which are connected to inputs of a processing module. In the processing module containing a unit for formation of an analytical signal, a unit for assessment and processing of a signal, a unit for formation of weight coefficients, a calibration unit, and a unit for formation of output interfaces, quadrature components are processed in parallel to form an analytical signal and assess an interference situation, based on which coefficients are calculated, determining formation of DD and “zeros” in the directional diagram, necessary for compensation of interference, which allows for implementation of phase shifts between antenna elements and simultaneous digital formation of several directional diagrams with rejection of interference coming directions. For implementation of management and control functions, to all units of the processing module, via bidirectional lines, a control module in the form of a tablet PC is connected, which is connected to an external computer for remote control via main and backup networks.

EFFECT: increase in interference resistance and throughput capacity of receivers of SW communication system with movable objects under conditions of strict requirements for provision of EMC with nearly located powerful radio-transmitting devices of SW range and impact of interference signals coming from random directions.

1 cl, 1 dwg