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Justify. Rectangular waveguides do not support TEM wave.
1 Answer
written 2.3 years ago by |
Solution:
Rectangular waveguides do not support TEM waves. wave having no axial component of →E or →H - If we assume the TEM wave exists within a hallow guide of any shape, the line of →H will be a closed loop in a plane perpendicular to the axis (∇,ˉH)=0
Now according to Maxwell eq,
∮L→H⋅d→L=∫3→J⋅d→s+∫s∂ˉD/∂t⋅d→s
∵ the conductor is hollow having no inner conductor the axial current is displacement current. (Conduction current is zero.).