Low-noise multiple phase oscillator
US9419634B1 · kind B1 · utility
0Cited by
5References
16Claims
0Family size
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Key dates
| Filing date | Jun 26, 2015 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Jun 26, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L1/02
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A multiple phase oscillator includes a master oscillator that injection locks a first ring oscillator. The free-running frequency of the first ring oscillator is adjustable through a control signal. A second ring oscillator has a same structure as the first ring oscillator and is connected to operate in a free-running mode. The free-running frequency of the second ring oscillator is adjustable through the control signal. A control loop senses the output of the second ring oscillator and adjusts the control signal so that the free-running frequency of the second ring oscillator matches a desired value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.