Home▸Electromagnetism▸Antenna Radio Waves (2D)

Antenna Radio Waves (2D)

Interactive 2D dipole antenna simulator: tune transmitter frequency and receiver antenna length, watch electromagnetic wavefronts radiate outward, and match the receiver to quarter-wavelength resonance for peak signal.

Electromagnetism2DModerate60 FPS📱 Mobile-adapted⇄ 3D version

This 2D simulator draws a dipole transmitter radiating electromagnetic waves outward as expanding wavefronts and a traveling field ribbon, while a translucent doughnut-shaped lobe shows the real sin²θ radiation pattern around the antenna. Drag the frequency slider to change the wavelength (λ = c/f), move the receiver's angle around the transmitter to see the radiated power fall off toward the antenna's axis, and tune the receiver antenna's length toward the quarter-wavelength ideal to watch its signal-strength meter and LED bank light up at resonance.

⚙ Under the hood

Interactive 2D dipole antenna simulator computing real radio-wave physics: tune the transmitter frequency and receiver antenna length, and move the receiver around the sin-squared-theta radiation pattern to find peak quarter-wavelength resonance.

Radio WavesElectromagnetic PropagationAntenna Design

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