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Important features for Transverse Magnetic (TM) Mode |
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We can note that in this case also the fields travel in  direction however there is no component of magnetic field along the direction of the wave propagation. This mode is hence called 'TRANSVERSE MAGNETIC or TM MODE'. |
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Again,  is used as the suffix to TM to indicate the order of the mode. |
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Important Observation |
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It is important to note that for  , unlike the TE modes the fields for TM modes do not vanish and therefore the TM mode exist. |
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The propagation constant  and the fields for  mode are as follows |
 --------- (6.13) |
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| --------- (6.14) |
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| --------- (6.15) |
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It is interesting to note that for mode not only the magnetic field is transverse to the wave propagation but even |
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the electric field(which has only  component) also becomes transverse to the wave propagation. The electric and magnetic field both are transverse to the wave propagation and the mode becomes 'TRANSVERSE ELECTROMAGNETIC (TEM) MODE' |
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