Frequency tracking loop using a scaled replica oscillator for injection locked oscillators
US11356107B1 · kind B1 · utility
5Cited by
3References
20Claims
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Key dates
| Filing date | Oct 15, 2021 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | Oct 15, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D5/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An accurate replica oscillator-based frequency tracking loop (FTL) is provided. The replica oscillator used in the FTL can be at a lower frequency and therefore can consume much lower power compared to a main oscillator, such as an injection locked oscillator (ILO). The proposed FTL accurately sets the free running frequency of an ILO across process, voltage and temperature (PVT). Techniques are also provided to compensate the gain and offset error between the replica oscillator and the ILO.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.