Title :
Frequency deviation measurement based on two-arm Δ-Σ modulated bridge
Author :
Zrilic, Djuro G. ; Pjevalica, Nebojsa U.
Author_Institution :
Dept. of Eng., New Mexico Highlands Univ., Las Vegas, NM, USA
fDate :
4/1/2004 12:00:00 AM
Abstract :
A method of frequency deviation measurement is presented. The use of a two-arm bridge is based on the use of delta-sigma (Δ-Σ) modulation and arithmetic operations on two synchronous Δ-Σ modulated pulse streams. The simulation results indicate a good linear relationship between frequency deviation and pulse count over the operating range. Stability of the clock and components mismatch of the Δ-Σ modulator are not critical for operation. Performance comparisons with existing solutions are given.
Keywords :
frequency measurement; sigma-delta modulation; arithmetic operations; clock stability; component stability; delta-sigma modulation; delta-sigma modulator; delta-sigma pulse stream; frequency deviation measurement; pulse count; synchronous delta-sigma modulated pulse streams; two-arm bridge; Bridge circuits; Counting circuits; Delta modulation; Detectors; Frequency measurement; Power engineering and energy; Power system measurements; Pulse measurements; Pulse modulation; Pulse power systems;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2003.822709
