Hello,

A TM surface wave on an interface has the magnetic field perpendicular to the direction of propagation and two electric field components (one is normal to the interface and the other is in the directional of propagation parallel to the interface).

According to Collin's Field Theory of Guided Waves, a TM surface wave can propagate on a conducting plane due to the conducing plane having an inductive surface impedance. I understand this is true because he proved that a TM surface wave needs an inductive surface impedance to be supported.

The problem I am having is how can a conducting plane support a TM surface wave, when one electric field component is tangential (parallel) to the surface? Wouldn't the conducting plane short out the tangential electric field based on boundary conditions?

Thank you for your help!

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