The Realization and Calibration of Active Simulation Impedance

This paper introduces the realization and calibration of complex impedance standard which is a kind of active simulation impedance. As a new calibration equipment for digital bridge, complex impedance standard can simulate any amplitude or angle of complex impedance by generating voltage and current to calibrate digital bridge in the whole complex plane, which can make up for deficiency in the calibration of digital bridge at present. At the same time, in order to ensure the calibrated environment of physical impedance, complex impedance standard is needed to track the frequency and lock the phase of digital bridge. In this paper, the realization and calibration of active simulation impedance are analyzed, and the experimental data is given in the end.