Method and circuit of digital measurement of the phase of a...

Details Method and circuit of digital measurement of the phase of a... Method and circuit of digital measurement of the phase of a...

2006-12-26

2006-12-26

Fan, Chieh M. (Department: 2634)

Pulse or digital communications

Testing

C375S213000

Reexamination Certificate

active

07154943

ABSTRACT:
A method for measuring with a maximum error E the phase of a substantially sinusoidal signal, of angular frequency ω=2π/T, sampled with a sampling period T/r, in which the phase is calculated as the time at which a straight line crossing two consecutive samples located on either side of a median value of the signal reaches said value, including the step of selecting number r from a range included between a value r0and a value equal to from two to three times value r0, such that:E≥maxt∈[-Tr0,0]⁢[t-Tr0·round⁡(G·sin⁢⁢ω⁢⁢t)round⁡(sin⁡[G·ω·t+2⁢πr0])-round⁡(G·sin⁢⁢ω⁢⁢t)]round(x) being the integer closest to a real number x and G being equal to 2iG1, where i is the number of bits on which are coded the samples and where G1is a term of correction of the amplitude of the sampled signal.

REFERENCES:
patent: 0 241 974 (1987-10-01), None
patent: 1 065 622 (2001-01-01), None

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