The amplitude of multichannel wideband receiving system is inconsistent due to time-varying and time-in-variant factors.Therefore,a real-time amplitude calibration technique is proposed.The RF detector is used to detect the signal power continuously in real time.After signal conditioning and AD sampling,the colsed-loop control attenua-tor is used to adjust the amplitude of the multi-channel signal to the target power tolerance range.At the same time,the temperature sensor is used to compensate for temperature drift in different temperature zones,and the real-time calibration amplitude of the multichannel wideband receiving system is realized in the factory calibration stage or sys-tem calibration stages.
real-time calibrationbroadband receptionRF detectionin system Flash
万方数据
维普
