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🎛️ Phase-Locked Loop — 2D Mixer, Loop Filter & VCO

2D phase-locked loop simulator: scope, phasor diagram and block diagram of phase detector, PI loop filter and VCO with second-order wn and zeta, lock range, cycle slips, noise bandwidth and in-page numerical checks.

Signals & Telecommunications2DAdvanced60 FPS📱 Mobile-adapted⇄ 3D version

Details

CategorySignals & Telecommunications

RenderingCanvas 2D

DifficultyAdvanced

Target FPS60

ControlsA step-size slider sets the reference-frequency jump in Hz; +Step and -Step buttons apply it immediately and 'Return to base frequency' undoes it, each showing a real lock-in transient. A loop-bandwidth slider (alpha, 0.002-0.15) sets the one-pole loop filter's response speed, trading faster lock-in against a noisier steady-state control voltage. Play/Pause toggles the simulation and Reset restores all state and history buffers.

phase-locked loopPLLVCOloop filterphase detectormixercontrol theory2d

📖 Read the articleThe maths behind Phase-Locked Loop — 2D Mixer, Loop Filter & VCO

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⚙ Under the hood

2D phase-locked loop simulator: scope, phasor diagram and block diagram of phase detector, PI loop filter and VCO with second-order wn and zeta, lock range, cycle slips and noise bandwidth with in-page numerical checks.

phase-locked loopPLLVCOloop filterphase detectormixercontrol theory2d

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install