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Perfectly Matched Load

 
If the load is perfectly matched to the line, as it is in this example, then there will be no backwards propagating wave; the reflection coefficient is 0. 
 

Perfect Match Voltages

 
Notes:
  • For this case, the total voltage drop across the two transmission lines is the same as the forward-propagating wave.  Thus, the total voltage is a pure traveling wave.
  • The voltage and current envelopes of a pure traveling wave is constant.  No matter where you placed a meter along the line, you would measure the exact same magnitude.  Only the phases of the waves would change.
 

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