Method for recovering a baseband signal from an RF signal
US7924946B2 · kind B2 · utility
1Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2007 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Nov 20, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/0082
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
By shifting an RF signal to IQ components of a modulated baseband signal directly, the zero-IF technology and IQ interface are applied in ATSC, NTSC, and PAL systems, and VSB and SSB modulations. The mathematic calculations are based on Fourier transform for shifting the RF signal and for recovering a baseband signal from the modulated baseband signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.