Modeled E-Field for Surface Wave (TM) Mode on a Perfect Conductor
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The animation above shows the modeled E-field for a pair of simple, uncompensated
linearly tapered launchers mounted on a smooth, lossless conductor. The structure
is excited by coaxial drive at the input of the left launcher. Energy is converted
to surface wave, propagated along the central region of the conductor and received
by the launcher on the right where it is coaxially terminated.
Colors represent logarithmic E-Field magnitude which spans a very
large range. The highest field intensity by far is located in the red
and orange region quite close to the central (black) conductor. The other colors;
yellow, green and blue represent greatly weaker field intensity but may
help show interesting detail of the propagation mode.
The modeling was performed by taking advantage of structure symmetry and halving the model
in two axes. Even with these simplifications, this analysis required more than
ten hours on a PC with 2 GHz CPU and 2 GBytes of memory.