Antennas
Antenna Calculators
Antenna design calculators and interactive visualisers — from a simple dipole to a full 2D phased array. Gain, beamwidth, element dimensions and radiation patterns for every common antenna type.
Dipole / Monopole
Half-wave dipole and quarter-wave monopole length for any frequency. Feed impedance, bandwidth and radiation resistance.
Patch Antenna
Rectangular microstrip patch — width, length, inset feed, bandwidth and gain. Substrate presets for FR4, Rogers RO4350B and Duroid.
Yagi-Uda Antenna
Element lengths and spacings for 3 to 16 element Yagi. Gain, front-to-back ratio, HPBW and polar pattern. Based on Viezbicke optimised design tables.
Horn Antenna
Pyramidal, E-plane and H-plane sectoral horns. Gain, HPBW, phase error, slant lengths and optimum horn finder for maximum gain. X, Ku and Ka-band presets.
Parabolic Dish
Dish diameter and frequency to gain, HPBW, aperture efficiency, focal length, f/D ratio and G/T. Presets for Ku VSAT, Ka-band and S-band radar.
Gain & Beamwidth Calculator ★ NEW
Shape-agnostic aperture calculator for circular, square and rectangular antennas. Solve forward for gain and beamwidth, or backward for the aperture size you need to hit a target.
Sparse & Faulty Array Simulator
Per-element amplitude, phase and active/failed control for linear and rectangular arrays up to 32 elements. Beam steering, amplitude tapering, failure injection and phase noise. Polar and Cartesian pattern with ideal vs actual comparison.
ULA / URA Array Patterns
Interactive beam pattern visualiser for linear and rectangular arrays. Beam scanning, amplitude tapering, grating lobe detection, HPBW and SLL metrics.
3D Pattern Visualizer
Rotate the full 3D radiation pattern for dipole, monopole, loop and patch antennas, then take theta/phi cuts as polar and rectangular plots. Built for teaching 3D-to-2D pattern visualisation.