What is beamwidth - Definition and Meaning

Beamwidth :

Antenna Beam width is the angle between the half-power of an antenna pattern or beam over which the relative power is at or above 50% of the peak power. Antenna beam width is also known as the half-power.

Formula :

Beamwidth = 70λ / D where, λ = Wavelength D = Diameter
British Thermal Unit Bandwidth

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