Signal processing device

Details Signal processing device Signal processing device

1991-10-30

1994-02-22

Kuntz, Curtis

Pulse or digital communications

Repeaters

Testing

332123, 332126, 455205, 329319, H03C 300, H03K 706, H04L 2712

Patent

active

052895025

ABSTRACT:
A signal processing device for processing an information signal, comprises a frequency modulator arranged to receive the information signal, to frequency-modulate the received information signal and to output a frequency-modulated information signal, a feedback signal generator arranged to receive the frequency-modulated information signal output from the frequency modulator means and to generate a feedback signal therefrom at a phase which is variable to be either in-phase or out-of-phase relative to the received frequency-modulated information signal in accordance with a duty in a high-level period of the received frequency-modulated information signal and at an amplitude which is variable within a range from a zero level to the same level as the received frequency-modulated information signal, and addition circuitry arranged to add the feedback signal output from the feedback signal generator to the information signal received by the frequency modulator.

REFERENCES:
patent: 3737585 (1973-06-01), Ghosh
patent: 4359779 (1982-11-01), Levine
patent: 4503405 (1985-03-01), Jordan et al.
patent: 4600943 (1986-07-01), Tanabe
patent: 4628286 (1986-12-01), Nossen
patent: 4839615 (1989-06-01), Sato
patent: 5091705 (1992-02-01), Hiramatsu et al.
patent: 5126699 (1992-06-01), Kabler

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