Antenna 3db Beamwidth Calculator

Simple electronics calculator to calculate the 3db beam width of an antenna from the values of diameter and frequency.

Calculate 3db Beamwidth

Enter Diameter meter
Enter Frequency GHz
3 dB Beamwidth degrees
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Formula:

Beamwidth = 70λ / D where, λ = Wavelength D = Diameter Antenna 3db Beamwidth is calculated easily using this electronics calculator.

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