Quadrature FSK receiver with compensation for frequency offset.
摘要
<p>A data receiver includes a pair of first and second mixers mixing an input RF signal and a local oscillator signal and generating a pair of 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 mixing the first and second baseband-frequency output signals. demodulator performing data demodulation by use of output signals from the third and fourth mixers.</p>
