| 摘要 |
A calibration apparatus of transmitting links for array antenna is provided, the calibration apparatus includes a power detection signal separating apparatus, a power detection signal feeder apparatus, a power detection apparatus, a signal synthesization apparatus and an array calibration apparatus; the downlink signal of the transmitting link processed by the power detection apparatus is transmitted to the power detection signal feeder apparatus, and then is transmitted to the signal synthesization apparatus; the signal synthesization apparatus separate the part of the radio frequency signal from each of the transmitting link firstly, then the separated radio frequency is synthesized and outputted to the power detection apparatus for power detection, the power detection apparatus outputs the power detection signal to the power detection signal feeder apparatus, the power detection signal is synthesized with the radio frequency signal in the power detection signal feeder apparatus, the power detection signal separating apparatus extracts the power detection signal from the above synthesized signal, and adjust the calibration weight based on the value of this signal, the adjusted calibration weight is transmitted to the array calibration apparatus to calibrate the transmitting link. The present invention does not use a dedicated calibration signal transceiver apparatus and a beacon antenna for the calibration of the array antenna, but use the method of the signal power detection to calculate the transmission gain calibration weight and transmission phase calibration weight. |
