This problem investigates the CB confi guration as a voltage amplifi er. Assuming the collector in Fig. P6.23 is terminated on an ideal active load, sketch and label the magnitude plots of the voltage...

This problem investigates the CB confi guration as a voltage amplifi er. Assuming the collector in Fig. P6.23 is terminated on an ideal active load, sketch and label the magnitude plots of the voltage gain a(j) 5 VoyVi and the impedances Zi (j) and Zo(j) if the BJT has gm 5 25 mA/V, r5 6 kV, ro 5 100 kV, C5 10 pF, C 5 0.25 pF, and Cs 5 0.5 pF. Assume rb 5 0 for simplicity. Hint: write Zi 5 Zi1//Zi2, where Zi1 5 zand Zi2 5 Ri2 1 1y(sCi2) is the impedance presented to the driving source by the rest of the circuit. Obtain expressions for Ri2 and Ci2, and use the impedance plotting techniques described in Appendix 6A.