Digital frequency demodulator

Details Digital frequency demodulator Digital frequency demodulator

1996-08-23

1998-10-06

Le, Amanda

Pulse or digital communications

Receivers

Angle modulation

329303, 329343, 455337, H04L 27156

Patent

active

058188819

ABSTRACT:
A digital frequency demodulator includes a first counter and a second counter measuring the instantaneous and mean values of the period of a frequency modulated signal. A comparator compares the values measured and creates a binary signal of the same frequency as the modulation signal. The measurement of the instantaneous value of the frequency modulated signal is effected by counting the number of reference clock pulses during a period of the modulated signal, and the measurement of the mean value is effected by counting the number of pulses of a clock signal of frequency N times lower than the reference clock during N periods of the modulated signal.

REFERENCES:
patent: 3876945 (1975-04-01), Gossel
patent: 4470296 (1984-09-01), Kobayashi et al.
patent: 4551846 (1985-11-01), Takeda et al.
patent: 4574247 (1986-03-01), Jacob
patent: 5311556 (1994-05-01), Baker
patent: 5339333 (1994-08-01), Zehngut et al.
patent: 5483193 (1996-01-01), Kennedy et al.
patent: 5550505 (1996-08-01), Gaus, Jr.

Affiliated with

Also associated with

Rating

Digital frequency demodulator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital frequency demodulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital frequency demodulator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-87348