Ok. So I have an assignment consisting of a BJT circuit, but questions about that will come later. Connected to the emitter of the BJT is a resistance R1 in parallel with capacitor C, then these are in series with resistance R2 to ground.

(I need to perform small signal analysis so C won't be treated as a short)

I know that R1 in parallel with C is just R1+Zc, and R1 in series with R2 is R1+R2. I'm just not sure what the total impedance is supposed to be. At first I thought it should just be (R1+Zc) + R2 but that doesn't seem right, since R2 is in series with C in a way. Would the equivalent impedance be (R1||R2)+Zc?

Any help is much appreciated!

(I need to perform small signal analysis so C won't be treated as a short)

I know that R1 in parallel with C is just R1+Zc, and R1 in series with R2 is R1+R2. I'm just not sure what the total impedance is supposed to be. At first I thought it should just be (R1+Zc) + R2 but that doesn't seem right, since R2 is in series with C in a way. Would the equivalent impedance be (R1||R2)+Zc?

Any help is much appreciated!

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