Calibration
US9209845B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2013 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Jan 8, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/305
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Technique for calibration of a frequency converter for reducing a leakage-based non-direct-current component at an output of the frequency converter. In an apparatus comprising a frequency converter arranged to perform frequency conversion on an input signal, a local oscillator signal generator arranged to generate an amplitude-modulated local oscillator signal of the frequency converter, and a detector arranged to detect a non-direct-current component of an output signal of the frequency converter, which results from the amplitude-modulated local oscillator signal, an amplitude modulation of an original local oscillator signal by the local oscillator signal generator is controlled, a magnitude of local oscillator leakage of the frequency converter is observed on the basis of the non-direct-current component detected by the detector, and at least one parameter influencing the non-direct-current component of the output signal of the frequency converter is adjusted such that the observed magnitude of local oscillator leakage is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.