Phase-noise reduction technique using frequency-to-current conversion with baseband integration
US8977222B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2012 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Nov 30, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/11
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A circuit for measurement of a phase noise of an oscillator may include the oscillator to generate a first signal having the same oscillation frequency as an instantaneous oscillation frequency of the oscillator. The circuit may include a first circuit that is configured to generate a second signal from the first signal. An instantaneous amplitude of the second signal may be related to the oscillation frequency of the first signal. A second circuit may be configured to integrate the second signal to generate a third signal. The third signal can be a measure of the phase noise of the oscillator. The third signal can be used to cancel some or all of the phase noise of the oscillator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.