Direct demodulation method and apparatus

Details Direct demodulation method and apparatus Direct demodulation method and apparatus

1996-09-18

2000-01-04

Chin, Wellington

Pulse or digital communications

Receivers

Angle modulation

375326, 329300, 329301, H04L 2722

Patent

active

060118164

ABSTRACT:
A demodulation circuit providing for detection of multiple zero-crossings in an FSK signal. High data rate signals are demodulated by generating, for each pair of baseband signals I and Q, additional I and Q pairs which are phase shifted from the original I and Q pair. By generating zero crossing signals for the original baseband signals and for the phase shifted signals, additional zero crossings may be detected allowing demodulation of relatively high data rate modulated signals.

REFERENCES:
patent: 4038686 (1977-07-01), Baker
patent: 4570125 (1986-02-01), Gibson
patent: 4878029 (1989-10-01), Saunier et al.
patent: 5293408 (1994-03-01), Takahashi et al.
patent: 5402446 (1995-03-01), Minami
patent: 5438692 (1995-08-01), Mohindra
patent: 5446762 (1995-08-01), Ohba et al.
patent: 5450032 (1995-09-01), Mimura et al.
patent: 5463664 (1995-10-01), Nakaya
patent: 5469112 (1995-11-01), Lee
patent: 5633895 (1997-05-01), Powell, II et al.
patent: 5635876 (1997-06-01), Gerrits et al.

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