Physics:Fraunhofer distance
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The Fraunhofer distance, named after Joseph von Fraunhofer, is the value of:
- [math]\displaystyle{ d = {{2D^2}\over{\lambda}}, }[/math]
where D is the largest dimension of the radiator (in the case of a magnetic loop antenna, the diameter) and [math]\displaystyle{ {\lambda} }[/math] is the wavelength of the radio wave. This distance provides the limit between the near and far field.
See also
![]() | Original source: https://en.wikipedia.org/wiki/Fraunhofer distance.
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