Nonlinear and concurrent digital control for a highly digital phase-locked loop
US8432197B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2011 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Dec 23, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/1075
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A phase-locked loop circuitry includes an oscillator circuitry having an input and an output. A phase detector circuit is connected to the output of the oscillator circuitry and has outputs thereof. A digital loop filter circuit is connected to the outputs of the phase detector circuitry and has outputs thereof. The outputs of the digital loop filter circuit are coupled, through a summing circuit, to the input of the oscillator circuitry. Values associated with the outputs of the digital loop filter circuit are updated concurrently based upon values associated with the outputs of the phase detector circuitry. One output of the digital loop filter circuitry has a high-pass transfer function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.