Please solve the problem Repeat Example 2.23 if RD1 and RD2 are replaced with id

Question

Please solve the problem

Repeat Example 2.23 if RD1 and RD2 are replaced with ideal current sources are channel-length modulation is not neglected. Determine the noise figure of the circuit shown in Fig. 2.53(a). Neglect transistor capacitances, flicker noise, channel length ... and body effect. For the first stage, .. and the unloaded output noise is equal to. For the second stage the reader can show from Fig. 2.53(b) that Note that the output impedance of the first stage is included in the calculation of but the noise of RD1 is not. We now substitute these values in Eq. (2.126), bearing in mind that and

Explanation / Answer

But the solution is already given and is correct.I just checked them out.The noise is correct.

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