A lateral pnp emitter follower has R S = 250 , b = 200 , =

A lateral pnp emitter follower has R_S = 250 Ω, b = 200 Ω, β = 50, I_C = −300 µA, f_T = 4 MHz, R_E = 4 kΩ, C_μ = 0, and r_o = ∞. Calculate the small-signal voltage gain as a function of frequency. Sketch the magnitude of the voltage gain in decibels from f = 10 kHz to f = 20 MHz, using a log frequency scale.