The parameters of the MOSFET in the circuit shown in Figure P4.21 are (V_{T N}=0.8 mathrm{~V}, K_{n}=0.85

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The parameters of the MOSFET in the circuit shown in Figure P4.21 are \(V_{T N}=0.8 \mathrm{~V}, K_{n}=0.85 \mathrm{~mA} / \mathrm{V}^{2}\), and \(\lambda=0.02 \mathrm{~V}^{-1}\).

(a) Determine \(R_{S}\) and \(R_{D}\) such that \(I_{D Q}=0.1 \mathrm{~mA}\) and \(V_{D S Q}=5.5 \mathrm{~V}\).

(b) Find the small-signal transistor parameters.

(c) Determine the small-signal voltage gain.

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