Harmonic quadrature demodulation apparatus and method thereof

Details Harmonic quadrature demodulation apparatus and method thereof Harmonic quadrature demodulation apparatus and method thereof

2011-01-25

2011-01-25

Kinkead, Arnold (Department: 2817)

Demodulators

Phase shift keying or quadrature amplitude demodulator

C600S443000, C600S458000

Reexamination Certificate

active

07876149

ABSTRACT:
Disclosed herein is a harmonic quadrature demodulation apparatus and method. The harmonic quadrature demodulation apparatus includes an input terminal for externally receiving an input focused signal, a harmonic phase estimation unit for estimating a second-order harmonic phase component from the input focused signal. The second-order harmonic detection unit includes an in-phase component extractor, a quadrature component extratctor, a Hilbert transformer, an adder and a low pass filter. The in-phase component extractor extracts an in-phase component of the input focused signal. The quadrature component extractor extracts a quadrature component of the input focused signal.

REFERENCES:
patent: 6540684 (2003-04-01), Averkiou et al.

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