Data receiver
US5081650A · kind A · utility
9Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1990 |
| Grant date | Jan 14, 1992 |
| Priority date | — |
| Expiry date | Jun 26, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/1525
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A data receiver includes first and second mixers mixing an input RF signal and a local oscillator signal and generating first and second quadrature baseband-frequency output signals. A phase shifter shifts a phase of the first baseband-frequency output signal by 90 degrees. A third mixer mixes an output signal from the phase shifter and the first baseband-frequency output signal. A fourth mixer mixes the first and second baseband-frequency output signals. A demodulator performs data demodulation by use of output signals from the third and fourth mixers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.