IEVref:726-03-13ID:
Language:enStatus: Standard
Term: TM<sub>mn</sub> mode (in a waveguide)
Synonym1: E<sub>mn</sub> mode (deprecated)
[Preferred]
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Definition: a normal mode where the subscripts m and n added to the abbreviations ТМ are assigned by observing the cross-sectional variation of the transverse magnetic field vector:

1 – In a rectangular waveguide subscripts m and n, in that order, indicate the number of half-period variations of the mainly transverse field vector along paths parallel to the wide and narrow walls respectively.

NOTE – The reverse notation, where the m and n paths are parallel to the narrow and wide walls respectively is deprecated.

2 – In a circular waveguide subscript m indicates the number of full-period variations of the transverse field vector along a circular path concentric with the wall, and subscript n indicates the number of reversals of the same vector along a radial path, plus one


Publication date:1982
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