For a parallel waveguide, the dominant mode for TM propagation is:

Electronics and Communication Engineering (ECE) : Microwave Communication - Quiz(MCQ)

TM3 mode

TM2 mode

TM1 mode

TM0 mode

Correct Answer : Option (C) : TM1 mode

Explanation : The mode of propagation for which the cutoff wavelength for wave propagation is maximum is called dominant mode. In TM mode of propagation, TM0 mode is similar to TEM mode of propagation. Hence, TM1 mode is the dominant mode.

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