Home Antenna Gain Calculator

Gain, Beamwidth, Efficiency and Aperture Metrics

Inputs

f min (GHz)

f max (GHz)

Dish diameter D (m)

Aperture area A (m²)

Beamwidth factor N

f (GHz)

Gain vs Frequency Gain vs Scan Angle (ITU main-beam)

Efficiency factors

η = 68.4%

Factor	η (%)

Outputs

Efficiency

—

Gain

—

HPBW

—

–1 dB Beamwidth

—

–6 dB Beamwidth

—

Effective Aperture A

—

Markers

type values