Downconversion of comb spectrum
US8718590B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 2012 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Dec 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/0086
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A downconverter mixes a first comb spectrum with a local oscillator signal to generate a second comb spectrum in a lower frequency range. The first comb spectrum comprises frequency components separated from each other according to a frequency spacing interval, and the LO signal has a frequency offset relative to the first comb spectrum, where the frequency offset is a rational fraction of the frequency spacing interval. The second comb spectrum comprises lower and upper sideband responses corresponding to respective lower and upper sideband signals of the first comb spectrum. The lower and upper sideband responses in the second comb spectrum can be distinguished from each other based on the frequency offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.