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IEVref:726-05-08ID:
Language:enStatus: Standard
Term: normalized complex wave amplitude
Synonym1: (complex) wave amplitude (deprecated in this sense)
[Preferred]
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Definition: at a given point in a transmission line or waveguide, the complex ratio of a specified field vector component in an electromagnetic wave in a given mode to the same field vector component in a reference wave in the same mode

NOTE 1 – For a mode of propagation, the reference wave may be one that carries unit power and in which a specified field component has zero phase at a specified point in the reference transverse cross-section. Usually, the transverse component of the electric field vector at the centre point of the reference cross-section is chosen for that purpose.

NOTE 2 – For an evanescent mode, the power carried by the wave is zero. One can then make the integral of the longitudinal complex Poynting vector, over the reference cross-section, equal to the imaginary unit, or use any other well-defined normalization.

NOTE 3 – It is preferable to consider separately the modes of propagation and the evanescent modes because the normalized complex wave amplitude concept is mostly applied to the former.

NOTE 4 – In rare cases where the scattering matrix has to be extended to evanescent modes, it is better to give the user freedom to choose and define his own reference waves.


Publication date:1982
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