Demodulator and address information extractor

Details Demodulator and address information extractor Demodulator and address information extractor

2008-01-22

2008-01-22

Payne, David C. (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C369S044130, C375S316000

Reexamination Certificate

active

10513149

ABSTRACT:
In a demodulator for demodulating a BPSK modulated signal, demodulation performance degradation caused by analog circuits such as fabrication variation is suppressed, and furthermore, frequency variation in the BPSK modulated signal is followed by the demodulator. A multiplication circuit105multiplies a carrier, generated from a BPSK modulated signal by a carrier information extraction circuit101and a carrier generation circuit102, by a digital BPSK modulated signal obtained by digitizing the BPSK modulated signal by an A/D converter104via a LPF103. A carrier period integration circuit106integrates the multiplication result with respect to the period of the carrier, and the integration result is then binarized in a discriminator107, thereby realizing demodulation.

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