2. Consider the amplifier to the right. This is a common base amplifier Assume that the values of r ro, B, and gm, are known, or have bee found from the DC analysis. For the following questions, you have t show all steps of the circuit analysis. cC (a) Draw the small-signal version of this amplifier Include th Early effect resistance in the pi-model. In other words, the pi model should be: be To (b) Use the circuit of part (a) to derive an expression for the input resistance R, of this amplifier (at the (c) Derive an expression for the output resistance Ro of this amplifier (at the right arrow). Do not (d) Derive an expression for the voltage gain of this amplifier (Av -vo/vi). Do not ignore the Early Effect (e) Derive an expression for the following current gain: A e/i, where i, is the current at Ri flowing left arrow). Ignore the Early effect resistance ro for this part. ignore the Early effect resistance for this. resistance for this. from left to right, and ie is the current at Rg flowing downwards. Do not ignore the Early Effect resistance for this. Derive an expression for the acceptable signal (voltage) range of this amplifier for Vi (f)