Influence of shield to impedance measurementXU Huan-rong Measuring Station of 20th Institute China Electronic Science ＆ Technology Corporation, Xi＇an 710075, ChinaAbstract:Shield is important to control the interference of electromagnetic field coupling.To research the interference of shield in impedence measurement,by the shield＇s theory and how to imply equal-potential shield,it may help engineer know the shield＇s affecting to the measurement of capacitance and inductance,resistance, in order to assure the reliability of measurement.[著者文摘]