Hybrid frequency shift keying modulator and method

Details Hybrid frequency shift keying modulator and method Hybrid frequency shift keying modulator and method

1988-05-27

1989-10-31

Mis, David

Modulators

Frequency shift keying modulator or minimum shift keying...

Including logic element

H03C 300

Patent

active

048780359

ABSTRACT:
A hybrid frequency shift keying modulator and method produces binary FSK by simultaneously applying a digital modulating signal to the DDS section of a frequency synthesizer along with a coordinated analog modulating signal as direct frequency modulation of the accompanying PLL section. Low frequency performance is derived from the characteristics of the DDS modulation and the high frequency performance and accurate wave shape reproduction are derived from the modulation of the direct FM section.

REFERENCES:
patent: 3801912 (1974-04-01), Ragadale
patent: 3902013 (1975-08-01), Charbonnier
patent: 3958191 (1976-05-01), Jones, Jr.
patent: 3987374 (1976-10-01), Jones, Jr.
patent: 3991389 (1976-11-01), Dwire et al.
patent: 4003001 (1977-01-01), Jones, Jr.
patent: 4083008 (1978-04-01), Eschke
patent: 4259648 (1981-03-01), Farrow
patent: 4471328 (1984-09-01), Chapman
patent: 4481489 (1984-11-01), Kurby
patent: 4492936 (1985-01-01), Albarello et al.
patent: 4556866 (1985-12-01), Gorecki
patent: 4580276 (1986-04-01), Andruzzi, Jr. et al.
patent: 4599583 (1986-07-01), Shimozono et al.
patent: 4612652 (1986-09-01), Kadin

Affiliated with

Also associated with

Rating

Hybrid frequency shift keying modulator and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hybrid frequency shift keying modulator and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hybrid frequency shift keying modulator and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-628094