Negative-feedback four-phase generator with twenty-five percent duty cycle output
US11581877B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2021 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Nov 2, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2005/00019
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A four-phase (or multi-phase) generation circuit, related method of operation, and transceivers or other systems utilizing such a circuit, are disclosed herein. In one example embodiment, the circuit includes two input ports respectively configured to receive positive and negative differential input signals, and four output ports respectively configured to output first, second, third and fourth output signals, respectively, the second, third, and fourth output signals being respectively phase-shifted relative to the first output signal by or substantially by 90, 180, and 270 degrees. Also, the circuit includes four SR latches respectively including output terminals that are respectively coupled to the respective output ports. Further, the circuit includes two tunable delay circuits respectively coupled at least indirectly between the input ports and latches, and two comparison circuits configured to output respective feedback signals. The latches receive two delayed input signals provided by the delay circuits based upon the feedback signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.