Quadrature-based injection locking of ring oscillators
US9473115B2 · kind B2 · utility
1Cited by
12References
20Claims
0Family size
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Key dates
| Filing date | Nov 18, 2015 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Nov 18, 2035 |
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.