Digital frequency synthesizer having AFC and modulation applied to frequency divider

A fractional-N synthesizer realizes automatic frequency control by adding (509) a digital representation of a determined frequency offset to a digital representation of applied modulation to create the modulus control of a programmable frequency divider (203).

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Bibliographic Details
Main Authors MARRY; PATRICK J, HIETALA; ALEXANDER W
Format Patent
LanguageEnglish
Published 05.05.1992
Subjects
AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
BASIC ELECTRONIC CIRCUITRY
DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER
ELECTRICITY
MODULATION
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Summary:A fractional-N synthesizer realizes automatic frequency control by adding (509) a digital representation of a determined frequency offset to a digital representation of applied modulation to create the modulus control of a programmable frequency divider (203).
Bibliography:Application Number: US19910695120