Nyquist band frequency translation
US6636569B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 2000 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Feb 23, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D7/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
There is disclosed a method of processing a signal which comprises sampling the signal at a sampling frequency. Discrete time components at the sampling interval are thereby generated. Inverting alternate ones of the discrete time components thereby translates a frequency component of the sampled signal in one part of the Nyquist band to another part of the Nyquist band. The step of inverting alternate ones of the discrete time components is shown to comprise multiplying the sampled signal by a reference signal at half the sampling frequency and having discrete time components at the sampling interval. Circuitry for implementing the method is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.