Digital FM modulating apparatus

Pulse or digital communications – Systems using alternating or pulsating current – Angle modulation

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375285, 375296, 375302, 455 43, 455 63, 455 76, 455110, 332126, 331 16, 331175, 327 39, 327 58, 327105, H03K 706, H03K 906

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active

054973996

ABSTRACT:
A digital FM modulating apparatus includes a device for restricting modulation data between a lower limit data value and an upper limit data value which respectively correspond to a minimum allowable frequency and a maximum allowable frequency value of an FM modulated signal. The apparatus also includes a device for suppressing transitional variance in the restricted modulating data and a direct digital synthesizer for receiving the suppressed data and producing synthesized data corresponding to the FM modulated signal.

REFERENCES:
patent: 4578818 (1986-03-01), Claydon
patent: 4682123 (1987-07-01), Loper et al.
patent: 4794621 (1988-12-01), Dirr
patent: 4802236 (1989-01-01), Walczak et al.
patent: 5027087 (1991-06-01), Rottinghaus
patent: 5053728 (1991-10-01), Bo/ gl
patent: 5126699 (1992-06-01), Kabler
patent: 5272454 (1993-12-01), Ikai et al.
Hamada, M., et al, "Design of a Digital FM Modulator for Satellite Broadcasting Earth Stations", 14th AIAA International Communication Satellite Systems Conference & Exhibit, Washington, D.C., Mar. 22-26, 1992, pp. 1702-1713.

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