Radio communication terminal station

Details Radio communication terminal station Radio communication terminal station

1996-03-26

1998-08-11

Pham, Chi H.

Pulse or digital communications

Receivers

Automatic frequency control

375326, 375327, 455260, 455263, H04L 2706

Patent

active

057938199

ABSTRACT:
A radio communication terminal station, includes a demodulator for receiving a digital modulation signal and generating a reproduction carrier wave and a reproduction clock signal, an oscillator having a frequency control function, an automatic frequency controller for controlling the frequency of an oscillation signal of the oscillator with reference to the reproduction carrier wave, a frequency divider for dividing the frequency of an output signal of the oscillator and outputting a reception clock signal and a transmission clock signal, a phase comparator for comparing the phase of the reception clock signal that is the output signal of the frequency divider with the phase of the reproduction clock signal and outputting a phase difference signal, and a frequency dividing controller for controlling the frequency dividing ratio of the frequency divider corresponding to the phase difference signal.

REFERENCES:
patent: 3758720 (1973-09-01), Dinn
patent: 4932070 (1990-06-01), Waters et al.
patent: 5090025 (1992-02-01), Marshall et al.
patent: 5111162 (1992-05-01), Hietala et al.
patent: 5335348 (1994-08-01), Kono
patent: 5483686 (1996-01-01), Saka et al.
patent: 5487186 (1996-01-01), Scarpa

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