METHOD OF CALIBRATING ACTIVE PHASED ANTENNA ARRAY Russian patent published in 2012 - IPC G01S7/40 

FIELD: physics, radio.

SUBSTANCE: invention relates to antenna equipment and is meant for calibrating active phased antenna arrays. The method of calibrating an active phased antenna array, in which in order to calibrate the receiving part of the transmit-receive channel, a control signal is transmitted to the input of the receiving part of each channel; parameters of the received signal are measured; adjusting coefficients which are used to adjust parameters of the receiving part of the channel are formed based on the measurements; to calibrate the transmitting part of the transmit-receive channel, a control signal is transmitted to the input of the transmitting part of each channel; parameters of the transmitted signal are measured; adjusting coefficients which are then used to adjust parameters of the transmitting channel are formed based on the measurements; calibration of the receiving part of the transmit-receive channels is carried out in pairs in receive mode, wherein the control signal is picked up from the output of the receiving part of the transmit-receive channels; calibration of the transmitting part of the transmit-receive channels is carried out in pairs in transmit mode, wherein part of the signal power tapped from the output of the corresponding transmit-receive channel and passing through the receiving part of that channel is used for calibration; during calibration, phase shift and amplitude difference of the signal from the output of the calibrated channel relative the reference channel are determined; the same reference channel is used for calibrating all channels.

EFFECT: wider field of application and high accuracy of calibration.

5 dwg