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IEVref:121-12-14ID:
Language:enStatus: Standard
Term: complex relative permittivity
Synonym1: relative complex dielectric constant
[Deprecated]
Synonym2:
Synonym3:
Symbol: εr
Definition: under sinusoidal conditions in a medium where the phasors D and E representing respectively the electric flux density and the electric field strength are linearly related, complex quantity ε r defined by the relation

D = ε0ε r E

where ε0 is the electric constant

Note 1 to entry: The complex relative permittivity is generally frequency dependent. For an isotropic medium, the complex relative permittivity is a scalar quantity; for an anisotropic medium, it is a tensor quantity.

Note 2 to entry: Generally, εr is expressed as ε r = ε' r − jε''r where ε'r is the real relative permittivity and ε''r is the dielectric loss index, which represents dielectric losses.


Publication date:2019-10
Source:
Replaces:121-12-14:1998-08
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CO remarks:
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