Title :
Design and implementation of a high resolution phase comparator
Author :
Liao, C.S. ; Huang, Y.J. ; Chu, F.D. ; Lin, H.T. ; Lin, S.Y. ; Lin, C.C. ; Tu, K.Y.
Author_Institution :
Nat. Time & Freq. Stand. Lab., Chunghwa Telecom Co. Ltd., Taoyuan, Taiwan
Abstract :
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.
Keywords :
analogue-digital conversion; counting circuits; phase comparators; signal detection; ADS; analog-to-digital sampler; device under testing; high resolution phase comparator; integrate-and-dump subsystem; numerical controlled oscillator; resolution analysis; sinusoidal signal detection; universal counter; zero-crossing technique; Clocks; Numerical stability; Power system stability; Radiation detectors; Stability criteria; Time frequency analysis; Analog-to-digital sampler (ADS); frequency measurement; numerical controlled oscillator (NCO); phase comparator; software-defined radio (SDR); stability;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6251085
