DIGITALE SENDE-EMPFANGS-ANORDNUNG

An electronic phase locked loop circuit including a variable period sawtooth generator. The sawtooth generator receives digital reference clock signals and in response thereto generates sawtooth-shaped signals having the same period as said reference clock signals. A sample and hold circuit samples...

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Bibliographische Detailangaben
Hauptverfasser:	R. WILSON,WILLIAM, E. MERROW,THOMAS, R. CAUDEL,EDWARD, D. MERRYMAN,JERRY, J. COCHRAN,MICHAEL
Format:	Patent
Sprache:	ger
Schlagworte:	AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES BASIC ELECTRONIC CIRCUITRY DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS RESONATORS TRANSMISSION WIRELESS COMMUNICATIONS NETWORKS
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Beschreibung
Zusammenfassung:	An electronic phase locked loop circuit including a variable period sawtooth generator. The sawtooth generator receives digital reference clock signals and in response thereto generates sawtooth-shaped signals having the same period as said reference clock signals. A sample and hold circuit samples the sawtooth-shaped signals in response to one logical state of a sampling clock. A voltage controlled oscillator is coupled to the output of the sample and hold circuit and oscillates at a frequency proportional to the magnitude of the held sample. A feedback circuit generates the sampling clock by coupling the output of the voltage controlled oscillator to the sampling input of the sample and hold circuit.