Data receiver

Details Data receiver Data receiver

1990-06-26

1992-01-14

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

329302, 329303, 375 82, H04L 2714

Patent

active

050816500

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.

REFERENCES:
patent: 4156194 (1979-05-01), Mueller
patent: 4462107 (1984-07-01), Vance
patent: 4518922 (1985-05-01), Luecke
patent: 4752742 (1988-06-01), Akaiwa
patent: 4870659 (1989-09-01), Oishi et al.

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