Title :
Accurate RF voltage measurements using a sampling voltage tracker
Author :
Souders, T. Michael ; Hetrick, Paul S.
Author_Institution :
NBS, Gaithersburg, MD, USA
fDate :
4/1/1989 12:00:00 AM
Abstract :
The RF voltage measurement capability of an equivalent-time sampling system has been investigated over the frequency range of 1-100 MHz. The system is easily calibrated from step response measurements, independent of thermal transfer standards. Comparison measurements made with NBS-calibrated thermal converters show agreement generally within the stated uncertainties presently provided by NBS for such calibrations. The system offers several advantages over conventional thermal transfer techniques: AC/DC transfers are not required, loading and transmission line problems are reduced, and direct measurement of voltages from 2 V to as low as 10 mV are possible. In addition, other waveform characteristics are readily obtained, e.g. average and peak values, harmonic distortion, etc
Keywords :
measurement standards; signal processing equipment; voltage measurement; 1 to 100 MHz; 2 V to 10 mV; NBS-calibrated thermal converters; RF voltage measurements; average value; equivalent-time sampling system; harmonic distortion; peak values; sampling voltage tracker; step response measurements; Calibration; Distortion measurement; Harmonic distortion; Measurement standards; NIST; Radio frequency; Sampling methods; Thermal loading; Transmission line measurements; Voltage measurement;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
