Design and implementation of a high resolution phase comparator

This paper describes a novel scheme for a high resolution phase comparator and its applications. The phase resolution of traditional universal counter, using zero-crossing technique to count measurand, is about 1×10-4 Hz. The proposed scheme utilities fast analog-to-digital sampler (ADS) to detect sinusoidal signal from device under test and its analyzed resolution could reach 1× 10-6 Hz. This novel system is composed by two subsystems, including numerical controlled oscillator and integrate-and-dump subsystem.