Question 12.8: DISTRIBUTED AMPLIFIER PERFORMANCE Use (12.79) to calculate t...
DISTRIBUTED AMPLIFIER PERFORMANCE
Use (12.79) to calculate the gain of a distributed amplifier from 1 to 18 GHz for N = 2, 4, 8, and 16 stages. Assume Z_{d} = Z_{g} = Z_{0} = 50 Ω and the following FET parameters: R_{i} = 5 Ω, R_{ds} = 250 Ω, C_{gs} = 0.30 pF, and g_{m} = 30 mS. Find the optimum value of N that will give maximum gain at 16 GHz.
G=\frac{g_{m}^{2}Z_{d}Z_{g}}{4} \frac{(e^{-N\alpha _{g}\ell _{g}} – e^{-N\alpha _{d}\ell _{d}} )^{2}}{(e^{-\alpha _{g}\ell _{g}} – e^{-\alpha _{d}\ell _{d}} )^{2}}The "Step-by-Step Explanation" refers to a detailed and sequential breakdown of the solution or reasoning behind the answer. This comprehensive explanation walks through each step of the answer, offering you clarity and understanding.
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