ps5 soln - Problem 2 From the plot we see that our...

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Problem 2
Problem 3 Smith chart showing S11 and S22 after matching Output Matching Network Input Matching Network
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Problem 4 h21, U and MAG has been plotted in the graph above for the bilateral circuit. We read from the graph that, fT= 269 GHz and fmax~ 285 GHz. These values are in good agreement with our approximate calculation of fmaxusing the simplified formula.
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Problem 5 On the left is the plot of Stability Factor(K) and Stability Measure (B) against frequency. B > 0 for all the frequencies of interest. But, we see that K < 1 for frequencies less than 96 GHz. This suggests that the circuit is potentially unstable below 96 GHz and unconditionally stable above 96 GHz. At 50 GHz, the circuit is

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