Transmission line question.

  • Thread starter seang
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  • #1
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Main Question or Discussion Point

If I have a section of transmission line, with a characteristic impedance Z0, how does the standing wave ratio in that section change as a function of the frequency of operation?

Doesn't the stading wave ratio just depend on the characteristic impedance of the line, and the load impedance?
 

Answers and Replies

  • #2
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Yes, the VSWR ratio depends only on the magnitude of the reflection coefficient, which is a function of the load impedance and characteristic impedance. However, in general, the load impedance will be a function of frequency, so the VSWR will be as well.
 
  • #3
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Finding the Input Impedance at z = 0 (the load) is equal to the load impedance, maybe? If so, don't the tan(Bl) all cancel anyway since l = 0?
 
  • #4
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Finding the Input Impedance at z = 0 (the load) is equal to the load impedance, maybe? If so, don't the tan(Bl) all cancel anyway since l = 0?
Which would make sense wouldn't it?
 

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