APPARATUS AND METHOD FOR GENERATING QUENCH WAVE FOR ON-OFF KEYING MODULATION AND ON-OFF KEYING RECEIVER USING THE SAME

摘要

An on-off modulation receiving apparatus according to an embodiment of the present invention includes a voltage controlled oscillator driven by a bias current having a quadrature waveform to receive and output an RF signal to output an oscillation signal, an envelope detector for detecting an envelope of an oscillation signal, A comparator that compares the envelope with a predetermined determination reference voltage to generate a demodulation symbol, and a quadrature waveform generation device that generates a bias current having a quadrature waveform. The apparatus for generating a quench waveform includes a first comparator for comparing a relatively large peak size of an envelope generated by a first training symbol sequence composed of different symbols and a first threshold for minimizing a difference between a first reference voltage and a peak average of a relatively small peak size, And a second threshold current that minimizes the difference between the peak magnitude of the envelope generated by the second training symbol sequence comprised of the symbol "0" and the second reference voltage or ground voltage level after the coarse correction is completed And combine the first threshold current and the second threshold current to generate a bias current having a quench waveform based on the corrected threshold current.