Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1983-01-03
1985-12-10
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307523, 307522, 307524, H03K 906, H03K 378
Patent
active
045582823
ABSTRACT:
A digital frequency synthesizer is provided for producing a signal having a predetermined frequency. Such system includes: a computer for calculating the residue of the frequency to be synthesized modulo a predetermined frequency, f.sub.LO, and the nearest modulus frequency; an intermediate frequency generator for generating an intermediate frequency signal having a frequency equal to the determined residue; a harmonic generator section for combining the intermediate frequency signal with a plurality of harmonics of the predetermined frequency, f.sub.LO, to produce a composite signal having a plurality of frequency components separated one from another by the predetermined frequency, f.sub.LO, one of such produced plurality of frequency components having the frequency of the signal being synthesized; and, a selector section fed by the composite signal and responsive to the determined nearest modulus frequency, for coupling the one of the produced plurality of frequency components of the composite signal having the frequency of the signal being synthesized to an output while rejecting the remaining ones of the produced plurality of frequency components of the composite signal.
REFERENCES:
patent: 3464018 (1969-08-01), Cliff
patent: 3882403 (1975-05-01), Gerken
patent: 4240034 (1980-12-01), Lowenschuss
patent: 4318045 (1982-03-01), Krupa et al.
patent: 4437066 (1984-03-01), Gordon
Miller Stanley D.
Pannone Joseph D.
Raytheon Company
Roseen Richard
Sharkansky Richard M.
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