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IEVref:121-12-14ID:
Language:enStatus: Standard
Term: complex relative permittivity
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Symbol: ε r
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 – The complex relative permittivity is generally frequency dependent. For an isotropic medium the complex relative permittivity is a scalar; for an anisotropic medium it is a tensor.

NOTE 2 – 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:1998-08
Source:705-03-04 MOD
Replaces:
Internal notes:2016-03-09: <sub>o</sub> corrected to <sub>0</sub> for the electric constant. JGO
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