Precision digital phase meter

Details Precision digital phase meter Precision digital phase meter

2006-10-24

2006-10-24

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Phase comparison

C324S076520, C324S521000, C702S072000

Reexamination Certificate

active

07126324

ABSTRACT:
A method of measuring phase includes receiving an analog signal; converting the analog signal into a digital signal; representing the digital signal as N sets of samples; aligning the N sets of samples to a common time frame; removing zero bias drift from the digital signal; and calculating a phase of the analog signal based on the digital signal with the zero bias drift removed. The phase can have a time resolution substantially equal to a time between adjacent samples.

REFERENCES:
patent: 3675129 (1972-07-01), Melvin
patent: 4608553 (1986-08-01), Ormond
patent: 6738205 (2004-05-01), Moran et al.
patent: 2003/0210165 (2003-11-01), Carreau et al.
patent: 2005/0137871 (2005-06-01), Capman et al.
A.M. Goncharenko, A High Speed Precision Digital Phase Meter with Direct Calculation of the Signal Phase, Instruments and Experimental Techniques, vol. 48, No. 2, 2005, pp. 215-218.

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