Method and apparatus for generating random jitter
US7512177B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2007 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Sep 16, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/205
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Apparatuses and methods comprise a phase shifter, an adjustable capacitance configured to adjust a phase shift of said phase shifter, an arbitrary waveform generator configured to adjust the adjustable capacitance, and a pulse pattern generator coupled to the phase shifter, the phase shifter is configured to control the pulse pattern generator. In one aspect, an adjustable capacitance is at least one varactor diode. In another, a pair of varactor diodes are separated by λ/4 lines, an input and an output of the adjustable capacitance is AC-coupled, and the arbitrary waveform generator is configured to adjust the adjustable capacitance through a gaussian noise signal input to the pair of varactor diodes. A deterministic jitter generator may be coupled to the pulse pattern generator. An open-circuited stub line may be input to the pattern generator, a deterministic jitter content number adjustable varying stub line length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.