Near-field Diffraction Pattern
In
telecommunication
,
near-field diffraction pattern
(
Fresnel diffraction pattern
) is the
diffraction
pattern of an
electromagnetic wave
, which pattern is observed close to a source or
aperture
, as distinguished from a
far-field
diffraction pattern. The pattern in the
output
plane is called the near-field
radiation pattern
. Contrast with
far-field diffraction pattern
. Source: from
Federal Standard 1037C
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