Systems and methods for narrowband signal quadrature error correction
US9306782B2 · kind B2 · utility
3Cited by
2References
20Claims
0Family size
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Key dates
| Filing date | Mar 13, 2015 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Mar 13, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D3/009
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Apparatus and method for quadrature error correction for narrowband or tone signal are disclosed. An analog circuit receives a modulated signal and processes in-phase signal and quadrature-phase signal in in-phase and quadrature-phase signal paths respectively. A digital signal processor performs discrete Fourier transform on each of the in-phase and quadrature-phase signals and determines statistical parameters responsive to mismatch characteristics to estimate quadrature error correction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.