Digitally-controlled oscillator
US7132895B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 2003 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Jun 23, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/0818
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digitally-controlled oscillator comprises an input for the supply of a digital input word, an adder, a stable local oscillator and a delay circuit, comprising a delay stage with a number of serially-connected coarse delay elements and a fine delay stage with a number of serially-connected fine delay elements. The coarse delay stage and the fine delay stage are embodied such that the maximum total delay and the minimum total delay differ by at most one period of the cycle signal. The delay produced by the number of fine delay elements corresponds to the delay of one coarse delay element. Each coarse delay element and each fine delay element comprise their own controllable selector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.