多通道宽带接收幅度实时校准技术  

Multi-channel Broadband Receiving Amplitude Real-time Calibration Technology

作　　者：李亮 LI Liang(Southwest China Institute of Electronic Technology,Chengdu 610036,China)

机构地区：[1]中国西南电子技术研究所,四川成都610036

出　　处：《电子质量》2024年第3期70-77,共8页Electronics Quality

摘　　要：多通道宽带接收系统由于时变与非时变因素导致多通道信号幅度不一致,对此提出了一种幅度实时校准技术。采用RF检波器连续实时检测信号功率,经信号调理和AD采样,闭环控制衰减器,将多通道的信号幅度调节到目标功率容限范围内;同时利用温度传感器对不同温区的温飘进行补偿,实现了多通道宽带接收系统在工厂校准阶段或系统校准阶段的幅度实时校准。The amplitude of multichannel wideband receiving system is inconsistent due to time-varying and time-invariant 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 attenuator 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 system calibration stages.

关 键 词：实时校准 宽带接收 射频检波 系统内闪存 

分 类 号：T[一般工业技术]