Method for reducing complex frequency down-conversion impairments
US6792054B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2000 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Mar 30, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D3/009
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An improved receiver is provided having a voltage controlled amplifier for adjusting the gain of a first input signal, a comparator and integrator for controlling the voltage controlled amplifier and connected to the output of the voltage controlled amplifier and connected to a second input signal, a cross-correlator connected to the output of the voltage controlled amplifier and the second input signal, first auto correlator connected to the output of the voltage controlled amplifier, a second auto correlator connected to the second input signal, a first mixer connected to the cross-correlator and the output of the voltage controlled amplifier for providing a correction signal to the signal output by the second auto correlator, and a second mixer connected to the cross-correlator and the second input signal for providing a correction signal to the signal output by the first auto correlator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.