Digital FM modulating apparatus

Details Digital FM modulating apparatus Digital FM modulating apparatus

1993-09-10

1996-03-05

Chin, Stephen

Pulse or digital communications

Systems using alternating or pulsating current

Angle modulation

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

Patent

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.

Affiliated with

Also associated with

Rating

Digital FM modulating apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1417466