(a) Assuming C 5 0, show that the voltage gain of the emitter follower of has the pole-zero frequency pair where R1 5 Rsig 1 rb and R2 5 RL//ro. Hint: expand the gain expression of Eq. (6.60) and put...

(a) Assuming C 5 0, show that the voltage gain of the emitter follower of has the pole-zero frequency pair

where R1 5 Rsig 1 rb and R2 5 RL//ro. Hint: expand the gain expression of Eq. (6.60) and put it in the standard form of Eq. (6.63). (b) Show that the impedance Zi has the pole-zero frequency pair

(c) Show that the impedance Zo has the zero-pole frequency pair

How do the above expressions simplify if 0 is large?