Quadrature-based injection locking of ring oscillators
US9219486B2 · kind B2 · utility
1Cited by
12References
23Claims
0Family size
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Key dates
| Filing date | Sep 5, 2014 |
| Grant date | Dec 22, 2015 |
| Priority date | — |
| Expiry date | Sep 5, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B2201/038
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Technologies are generally described for quadrature-based injection-locking of ring oscillators. In some examples, an external signal may be injected into a ring oscillator. Phase signals may be measured from within the ring oscillator and used to determine a mean quadrature error (MQE) that characterizes the difference in frequency between the external signal and the ring oscillator's natural frequency. A control signal may then be generated from the MQE and used to adjust the ring oscillator natural frequency to reduce the difference between the ring oscillator natural frequency and the external signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.