Frequency stabilizing device

Details Frequency stabilizing device Frequency stabilizing device

1994-05-18

1995-10-24

Chin, Stephen

Pulse or digital communications

Receivers

Automatic frequency control

4551961, 4551971, H04L 2706, H04B 126

Patent

active

054616450

ABSTRACT:
An intermediate frequency (IF) converter converts a received signal to an IF signal. A demodulator demodulates the IF signal to a demodulated signal and detects a phase error. A frequency error detector detects a frequency error based on the phase error. A modulated-carrier detector detects a modulated carrier component from the IF signal. When the modulated carrier component is detected, a controller achieves a frequency stabilizing operation based on the frequency error.

REFERENCES:
patent: 4947409 (1990-08-01), Raith et al.
patent: 5065107 (1991-11-01), Kumar et al.
patent: 5289506 (1994-02-01), Kitayama et al.

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