Calibrating reconstructed signal using multi-tone calibration signal
US8849602B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2011 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Mar 29, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R13/0272
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of calibrating a reconstructed signal from a plurality of sub-signals is provided. The method includes injecting a calibration signal having multiple tones into a received input signal; dividing the input signal into a first and second sub-signal, including an overlapping frequency band; performing a first frequency translation by converting frequency components of the second sub-signal; digitizing the first sub-signal and the frequency converted second sub-signal; performing a second frequency translation to reverse the first frequency translation to obtain a reconstructed second sub-signal; and quantifying impairments to the digital first sub-signal and reconstructed second sub-signal caused by differences in magnitude and phase of frequency components within the overlapping frequency band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.