ISRO Scientist or Engineer Electronics 2012 Question 17

Question 17

For a parallel RC circuit as shown in figure, R = 20 QN & C = 0.9 vF, which is to be matched to 50 Q over a bandwidth,

$$\int_{0}^{\infty} \ln \frac{1}{\mid r \mid} dw \leq \frac{\pi}{RC}$$

The circuit has to be matched over 6 GHz to 18 GHz, What is the  very best r that can be achieved:

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