Frequency synthesizer modulation response linearization
US4649353A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 29, 1985 |
| Grant date | Mar 10, 1987 |
| Priority date | — |
| Expiry date | Mar 29, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03C2200/0083
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In accordance with the present invention, there is provided a method of substantially flattening the modulation response in a frequency synthesizer. The method includes the steps of generating a synthesized frequency in response to a filtered control signal; scaling the synthesized frequency with a scalar; generating a control signal, having a response substantially the reciprocal of the frequency generation response, and indicative of the phase relationship between a reference frequency and the scaled, synthesized frequency; and filtering the control signal, whereby the interaction of the phase relationship control signal response and the frequency generation response approximates a flat modulation response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.