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.