Square Wave Input:    For  omegagtb

We now examine what happens when  omegagtb    For  omegagtb our output due to a sine wave input becomes:

          p18_10

For a square wave input expressed as the sum of a series of sinusoidal inputs the output becomes:

           p17_4a    arrow    p18_11c
 
arrow p18_12c
 
arrow p18_13c


We thus expect the output due to a square wave input to be about 1.052 times the output due to a sine wave input. Expressed in decibels this becomes:

           DB   =   p18_14c
 
  =   p18_15c
 
  =   p18_16c


The output due to a square wave input is about 0.44 DB greater than it would be for a sine wave input when  omegagtb

We may conclude that the difference in response between a sine wave input and a square wave input is small. Thus, to experimentally determine the unknown parameter B we may use square waves of various frequencies and analyze the results the same as we would for a sine wave input.
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