IEVref:802-01-20ID:
Language:enStatus: Obsolete
Term: beamwidth
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Symbol: w6, w10, w20
Definition: greatest distance between two points on a specified axis perpendicular to the beam axis, where the pulse-pressure-squared integral falls below its maximum on the specified axis by a specified amount

NOTE – Commonly used beamwidths are specified at –6 dB, –10 dB and –20 dB levels below the maximum. The decibel calculation implies taking 10 times the logarithm (to the base 10) of the ratios of the integrals.


Publication date:2011-01
Sourcedefinition 3.11 of IEC 62127-1 MOD
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