A PLL is an automatic control system that adjusts the Overview of PLL SimulationĪ phase-locked loop (PLL), when used in conjunction with other components, helps The amplitude variations of the input signal. ![]() ![]() These blocks produce continuous-time and discrete-time output signals, respectively.Įach block's output signal is sinusoidal, and changes its frequency in response to The Continuous-Time VCO and Discrete-Time VCO blocks implement voltage-controlled oscillators. ![]() Voltage-Controlled Oscillator BlocksĪ voltage-controlled oscillator is one part of a phase-locked loop. A phase-locked loop combines a voltage-controlled oscillator and a phase comparator asĪ feedback system to adjust the oscillator frequency or phase to track an appliedįrequency-modulated or phase-modulated signal.
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