jamal33

Describe beamwidth and its power level.

A complete description would be greatly appreciated.

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maraiah

The angular width of the major lobe of a radiation pattern. It is usually at the half-power level, i.e., 3 dB below the peak of the major lobe. It can also be specified as the width between the nulls on either side of the major lobe (BWFN).

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anala

"Beam diameter is usually used to characterize electromagnetic beams in the optical regime, and occasionally in the microwave regime, that is, cases in which the aperture from which the beam emerges is very large with respect to the wavelength. "

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