Step-controlled frequency synthesizer
US6239660A · kind A · utility
8Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 4, 2000 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Feb 4, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/185
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method of controlling a frequency synthesizer and a frequency synthesizer having a controllable output signal frequency and including a direct digital synthesizer whose output signal is coupled to the input of a phase-locked loop. To reduce the settling time of the synthesizer, the direct digital synthesizer includes a control circuit for controlling the frequency of the direct digital synthesizer from a first frequency to a second frequency in accordance with predetermined frequency steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.