Research on Calibration and Traceability Technology of RF Impedance Standards
Rf impedance standard is the key device to verify the measurement performance of RF impedance meas-uring instrument,which can establish the traceability relationship between the reference data stored inside the in-strument and the national impedance standard.In this paper,the structure of 10cm coaxial unsupported air line,short circuit standard,open circuit standard and 50Ω impedance matching standard is analyzed.Based on the trans-mission line theory,the RF impedance standard is fixed by using equivalent and spline interpolation algorithms,and the uncertainty of the calibration value is evaluated.The traceability relationship between the RF impedance standard quantity value,physical size and national microwave impedance standard is established,and the cross-o-verlap problem of RF impedance quantity value traceability and quantity value transmission is solved.
radio frequencyimpedance standardcalibratetraceability
万方数据
维普
