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Far field
Domain: Health and safety at work => Risk factors => Radiations
Grammatical category
Noun phrase
Grammar notes
The region where the distance from a radiating antenna exceeds the wavelength of the radiated EMF; in the far-field, field components (E and H) and the direction of propagation are mutually perpendicular, and the shape of the field pattern is independent of the distance from the source at which it is taken.
Definition source
Guidelines for limiting exposure to time-varying electric, magnetic and electro-magnetic fields (up to 300 GHz)" - International Commission on Non-Ionizing Radiation Protection (ICNIRP)
European legislation
Amendment Directive 2004/40/CE, Recommendations 1999/512/EC, 1999/519/EC
British legislation
The Ionising Radiations Regulations 1999
Related terms