Ultra-low-power injection locked oscillator for IQ clock generation
US10536151B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2018 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Jul 26, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/24
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An injection locked oscillator (ILO) circuit is disclosed. The ILO circuit may include a first clock injection stage including a first programmable inverter in series with a first self-biased inverter. The first injection stage may receive a first input clock having a first frequency and generate a first injection signal. The ILO circuit may further include a second clock injection stage including a second programmable inverter in series with a second self-biased inverter. The second injection stage may receive a second input clock signal having the first frequency and to generate a second injection signal. The ILO may further include a phase locked loop (PLL) stage including a multi-stage ring oscillator. The PLL stage may receive the first injection signal and the second injection signal and to generate an output clock signal based at least in part on the first frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.