Digital circuit system of linear frequency modulation continuous wave phase-locked loop and phase-locked loop

The invention discloses a digital circuit system of a linear frequency modulation continuous wave phase-locked loop and the phase-locked loop, belongs to the technical field of integrated circuits, and solves the problems that digital circuits in an existing phase-locked loop are various in type, lo...

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Hauptverfasser: ZHONG RUI, YU BIN, WAN ZHUJUAN, WU BOWEN, SUN BIN
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creator ZHONG RUI
YU BIN
WAN ZHUJUAN
WU BOWEN
SUN BIN
description The invention discloses a digital circuit system of a linear frequency modulation continuous wave phase-locked loop and the phase-locked loop, belongs to the technical field of integrated circuits, and solves the problems that digital circuits in an existing phase-locked loop are various in type, long in design period and low in design efficiency. According to the technical scheme, a control signal in a corresponding mode is generated according to an input mode selection signal, a frequency sweeping maximum value, a frequency sweeping minimum value and a frequency sweeping step to control a control signal generation unit, an address code generation unit, a frequency dividing ratio searching unit, a differential integral modulator, a frequency dividing ratio decoding unit and a dual-mode frequency divider, a multi-functional frequency sweep mode with adjustable continuous frequency and fixed frequency output is realized, the requirements of different phase-locked loop systems are met, the number of types of di
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subjects AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
title Digital circuit system of linear frequency modulation continuous wave phase-locked loop and phase-locked loop
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