Phase velocity/propagation velocity?

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SUMMARY

The discussion clarifies the distinction between phase velocity and propagation velocity in the context of transmission lines. The equation λ = v * T, where v represents the velocity of propagation, is emphasized as the correct interpretation for solving transmission line problems. Additionally, the relationship c = f * λ is noted for free space applications, reinforcing the concept of velocity in wave propagation.

PREREQUISITES
  • Understanding of wave mechanics and transmission lines
  • Familiarity with the concepts of wavelength (λ), frequency (f), and period (T)
  • Knowledge of the equations relating velocity to wavelength and frequency
  • Basic grasp of electromagnetic theory in free space
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  • Research the differences between phase velocity and group velocity in wave propagation
  • Study the applications of transmission line theory in electrical engineering
  • Learn about the impact of medium on wave propagation velocity
  • Explore the implications of the equation c = f * λ in various physical contexts
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Electrical engineers, physics students, and professionals working with transmission lines and wave propagation concepts will benefit from this discussion.

seang
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what is the difference between the two, if any?

In particular, I'm working on this transmission line problem where I'm given the time delay and the length. I can solve to find some sort of velocity--is it the phase velocity, or propagation velocity?

I also have the equation lambda = vp * T. Again, is this phase velocity or propagation velocity?

Thanks,
Sean
 
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Sounds like Velocity of Propagation...not sure though.

Lambda = v*T = v/f

where,

v = velocity of propagation
T = period
f = frequency

Also, remember that c = f*lambda for free space (which is normally assumed for some applications).
 

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