Integrated frequency source
US6542044B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2000 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Sep 11, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/1976
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An integrated frequency source with an integrated frequency standard and an integrated frequency synthesizer is disclosed. A voltage-controlled oscillator in the frequency standard is eliminated with a resulting improvement in phase noise. A reference frequency in the frequency standard is provided directly to the frequency synthesizer. The integrated frequency source is put on frequency over temperature by storing reference frequency errors over temperature in a lookup table, measuring the temperature, and calculating in a microprocessor synthesizer control data that offsets the synthesizer to compensate for reference frequency errors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.