Low gain voltage-controlled oscillator
US5757240A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1996 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Jul 1, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S331/02
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A voltage controlled-oscillator ring oscillator having an adjustable high-frequency reference and an adjustable low-frequency reference. A mixer and a plurality of delay elements comprise a delay interpolating oscillator ring. The mixer receives a high-frequency reference input signal from a first multiplexer which selects the output of one of several delay elements having relatively short delay loop paths. The mixer receives a low-frequency reference input signal from a second multiplexer which selects the output of one of several delay elements having relatively long delay loop paths. The frequency of the mixer output is continually adjustable between the high-frequency reference and the low-frequency reference. As operating conditions change the first and second multiplexers can select the outputs of different delay elements in order to change the frequency of the high-frequency and low-frequency references.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.