DEVICE FOR CALIBRATING RECEIVING CHANNELS OF RECEIVING-TRANSMITTING MODULES OF MULTIBEAM DIGITAL ACTIVE PHASED ANTENNA ARRAY Russian patent published in 2024 - IPC H01Q21/00 H04B17/21 G01R29/10 

FIELD: antenna equipment.

SUBSTANCE: invention relates to the field of antenna equipment for calibration of receiving multibeam digital active phased antenna arrays (DAA) used in radar stations. Disclosed is a device for calibrating the receiving channels of the RTM, which includes a control signal generator (CSG), made on the basis of a coherent heterodyne (CH), the input of which is connected to the output of the transmitting channel of the reference RTM of the multibeam digital antenna array. CH output is connected to amplitude modulator first input and to frequency divider input, which output is connected to "AND" circuit first input, which second input is connected to trigger output, the first input of which is connected to the output of the reverse clock pulse counter (RCPC), and the second input of the trigger serves to receive the “Start” command from the output of the radar station control system. Input of the RCPC is connected to the first output of the clock pulse generator, the second output of which is connected to the input of the modulating pulse generator, the output of which is in turn connected to the second input of the amplitude modulator, the output of which is connected to the output of the control signal generator via the amplitude limiter. In addition, the output of the quadrature ADC of the receiving channel of the reference RTM and the outputs of the quadrature ADCs of the receiving channels of the calibrated RTM are connected to the inputs of the accumulating coherent adders, outputs of which are connected to inputs of determining devices of deviation of amplitude-phase characteristics of receiving channels of calibrated RTM from amplitude-phase characteristics of receiving channel of reference RTM. Outputs of deviation determiners are connected through correction system to correction inputs of receiving channels of calibrated RTM.

EFFECT: high reliability and accuracy of calibrating receiving channels of receiving-transmitting modules (RTM) of a multibeam digital antenna array.

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