Antenna Design Calculators

Dipole Antenna

Calculate the physical length, wavelength, gain, radiation resistance, and 50Ω VSWR for a half-wave dipole antenna at any frequency. Supports velocity factor for insulated wire.

Patch Antenna

Calculate rectangular microstrip patch antenna dimensions (width, length) using the Transmission Line Model. Outputs effective dielectric constant, edge-feed impedance, and nominal gain for common substrates like FR4 and Rogers.

EIRP / ERP

Calculate Effective Isotropic Radiated Power (EIRP) and ERP from transmit power, cable loss, and antenna gain. Check compliance against FCC, ETSI, and ISM-band regulatory limits.

Beamwidth

Calculate antenna 3dB beamwidth from gain, aperture efficiency, and frequency for aperture antennas

Yagi-Uda Antenna

Calculate Yagi-Uda antenna element dimensions, gain, and impedance for a given frequency and number of elements

Horn Antenna

Calculate pyramidal horn antenna gain, E-plane and H-plane half-power beamwidths, and effective aperture area for microwave applications

Parabolic Dish

Calculate parabolic dish antenna gain, half-power beamwidth (HPBW), effective aperture area, and noise temperature for satellite and microwave links

Loop Antenna

Calculate small loop antenna radiation resistance, loss resistance, gain, Q factor, and operating bandwidth for HF and VHF applications