FM demodulator system with threshold extension

Details FM demodulator system with threshold extension FM demodulator system with threshold extension

1986-08-04

1987-10-06

Grimm, Siegfried H.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329136, 329139, 329168, 358 36, 358167, 455266, 455307, H03D 300, H04B 110

Patent

active

046985980

ABSTRACT:
A FM demodulator system which provides threshold extension by frequency selective phase modulation of the input FM signal in a band pass filter to reduce phase error between the input and output of the filter. The output of the filter is applied to an FM discriminator which provides a base band signal. This base band signal is applied to a frequency selective phase compensation network to derive a signal which phase modulates the band pass filter. The filter rejects uncorrelated thermal noise so as to effect threshold extension in the demodulator system.

REFERENCES:
patent: 4101837 (1978-07-01), Clayton, Jr. et al.
patent: 4339828 (1982-07-01), Chasek
patent: 4458207 (1984-07-01), Favrean et al.
patent: 4563651 (1986-01-01), Ohta et al.
patent: 4594556 (1986-06-01), Ohta
Ref. Data Radio Eng. 5th Ed., pp. 21-12 & 13, 1985.

Affiliated with

Also associated with

Rating

FM demodulator system with threshold extension does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2120062