Digital quadrature discriminator for demodulation of frequency-m

Details Digital quadrature discriminator for demodulation of frequency-m Digital quadrature discriminator for demodulation of frequency-m

1998-12-04

2000-06-27

Grimm, Siegfried H.

Demodulators

Frequency modulation demodulator

Input signal split into plural signals

329341, 329343, 375328, H03K 906, H03D 302

Patent

active

060811552

ABSTRACT:
A circuit is designed with a delay circuit (102) coupled to receive a frequency-modulated data signal (100) at a delay input terminal. The delay circuit produces the data signal (103) after a predetermined delay at a delay output terminal. An exclusive OR circuit (104) has a first input terminal coupled to the delay input terminal and has a second input terminal coupled to the delay output terminal.

REFERENCES:
patent: 3980824 (1976-09-01), Lamb et al.
patent: 4435682 (1984-03-01), Boudault et al.
patent: 5200835 (1993-04-01), Sakamoto
patent: 5910752 (1999-06-01), Filipovic et al.

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