Method and system for measuring amplitude and phase difference between two sinusoidal signals
US8564339B2 · kind B2 · utility
0Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2012 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Aug 16, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R25/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and a system for measuring amplitude and phase difference between two sinusoidal signals, using an adaptive filter. The method generally comprises measuring a sample of an output signal of a system excited by a sample of a reference signal; using an adaptive filter and the sample of the reference signal to determine a and b coefficients that minimize a prediction error on the sample of the output signal, iteratively, and determining the amplitude and/or phase of the output of the system using the a and b coefficients.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.