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Velocity factor of lossy transmission line?

  1. Mar 2, 2014 #1
    I have been reading up on transmission lines and I was wondering:

    If a transmission line has high dielectric loss (low conductance, G) does this have any effect on the velocity factor?

    I would think that it would reduce the velocity factor because some of the energy would be absorbed by the conductance, but I'm not certain.
  2. jcsd
  3. Mar 3, 2014 #2


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    Gold Member

    Absorption does not mean reduced velocity, it means essentially amplitude becoming smaller.
    You should go back to the theory of lossy lines.
    However, there could be a subtle link.

    I have a question: what is the velocity of this wave:

    exp(- α x) exp(i(k x - ω t))

    how would you understand a complex wave velocity ( w/(k+iα) ) ?
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