CAJ | 학술논문

为了提高幅相检测精度、简化电路、扩展频率范围,设计了一种基于AD8302高精度幅度相位检测系统。通过分析AD8302的特点以及工作原理,提出了几种提高相位检测精度的方法,并设计采用AD8302、DDS和单片机组成高精度幅相检测系统,成功地解决了AD8302相位检测过程中存在的二值性、非线性、移相以及校准问题,实现两路模拟输入信号的相位差和幅度差的精确测量。测试结果表明基于AD8302的幅相检测系统具有精度高、抗干扰能力强等优点。
위료제고폭상검측정도、간화전로、확전빈솔범위,설계료일충기우AD8302고정도폭도상위검측계통。통과분석AD8302적특점이급공작원리,제출료궤충제고상위검측정도적방법,병설계채용AD8302、DDS화단편궤조성고정도폭상검측계통,성공지해결료AD8302상위검측과정중존재적이치성、비선성、이상이급교준문제,실현량로모의수입신호적상위차화폭도차적정학측량。측시결과표명기우AD8302적폭상검측계통구유정도고、항간우능력강등우점。
In order to raise the accuracy of the magnitude and phase measuring,predigest the circuit,enlarge the range of the frequence,a kind of the magnitude and phase measuring system with high precision based on AD8302 is designed.This paper analysed the AD8302 Character and the working principle,and presented several methods to improved high-precision phase measuring.Then compose the magnitude and phase measuring system with high precision based on AD8302 DDS and MCU,It is successful to resolve problem of double value,nolinear,phase shift and calibrate in AD8302 phase measuring system,to realize the measurement of the magnitude and phase of the two simulated input signal.The results shows that magnitude and phase measuring system based on AD8302 has the advantages of precision and strong anti-jamming.