DUAL EDGE-TRIGGERED PHASE DETECTOR AND PHASE LOCKED LOOP USING SAME

THERE IS DISCLOSED A PHASE DETECTO (4 ) WHICH TRIGGERS ON BOTH RISING AND FALLING EDGES OF AN INPUT PULSE SIGNAL. THIS EFFECTIVELY DOUBLES THE FREQUENCY OF THE INPUT SIGNAL. WHEN THE PHASE DETECTOR (4) IS USED IN A PHASE LOCKED LOOP, THE DOUBLED FREQUENCY MEANS THAT A LOWER DIVISION RATIO CAN BE USE...

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Bibliographische Detailangaben
Hauptverfasser:	BJORN LINDQUIST, MAGNUS NILSSON
Format:	Patent
Sprache:	eng
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 ELECTRICITY
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Beschreibung
Zusammenfassung:	THERE IS DISCLOSED A PHASE DETECTO (4 ) WHICH TRIGGERS ON BOTH RISING AND FALLING EDGES OF AN INPUT PULSE SIGNAL. THIS EFFECTIVELY DOUBLES THE FREQUENCY OF THE INPUT SIGNAL. WHEN THE PHASE DETECTOR (4) IS USED IN A PHASE LOCKED LOOP, THE DOUBLED FREQUENCY MEANS THAT A LOWER DIVISION RATIO CAN BE USED, THEREBY REDUCING ANY NOISE CONTRIBUTION INTRODUCED THEREBY.(FIGURE 1)