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Why do TEM modes need two conductors to propagate?

  1. Apr 30, 2014 #1
    Why do we need two conducting surfaces to allow TEM modes to propagate through a waveguide? Why can we not propagate TEM waves through a single conducting waveguide?
  2. jcsd
  3. Apr 30, 2014 #2


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  4. Apr 30, 2014 #3

    Meir Achuz

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    With only one conductor, the only solution that satisfies E_tangential at the conductor equal to zero is E=0 everywhere.
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