Title :
Precise Differential-Phase Generator
Author :
White, Robert A. ; Yell, Ralph W.
Abstract :
A sinewave differential-phase standard of high accuracy and repeatability has been developed for the frequency range "zero frequency" to 200 kHz. The potential accuracy is better than (0.000 36 × F) degrees, where F is in kilohertz, throughout the range. Particular attention has been given to the purity of the output sinewave and a theoretical study has been undertaken with a view to minimizing harmonic and intermodulation distortion and at the same time optimizing the digital circuit.
Keywords :
Clocks; Digital circuits; Distortion measurement; Frequency measurement; Intermodulation distortion; Passive filters; Phase measurement; Power harmonic filters; Power system harmonics; Standards development;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.1980.4314959
