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Definition of Near field
1. Noun. In physical acoustics, the region of space within a distance a fraction of a wavelength from a sound source. Accordingly, the outer boundary of the near-field region is closer for high-pitched sound than for low-pitched sound. ¹
2. Noun. In radio-frequency electromagnetic technology, the region within about half a wavelength from an electrically small antennaCharles Capps, [ Near field or far field?] EDN, August 16, 2001, pp. 95-102.. More specifically it is the region within the radiansphereWheeler, H.A.; "The Radiansphere around a Small Antenna"; Proceedings of the IRE Aug. 1959, Volume: 47 Issue:8 pp: 1325 - 1331. 10.1109/JRPROC.1959.287198 . ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Near Field
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