Question

(c) Determine fi and fto (d) Find fe and fr Ika 47 -F 1ka C. Ri 々 Fig. (2) e ) Question 2(10 marks) For the circuit shown in Fig. (2) assume the FET transistor is operating in the active region with g- 1.18 mS. Determine, 1- Avmid 2- fiGfis and fic 3- iu and fro 4.- The gain bandwidh product(fi-st 5- The Bandwidth at (Avmid /2)

Answer 1

A_v_mid = ? We know that A_v mis = -g_m (R_D // R_L) Given g_m = 1.18 ms From circuit we have R_D = 1 k Ohm R_L = 1.9 k Ohm A_v mid = -1.8 times 10^- 3 (1 // 1.9) = -1.1793 f_L_g = 1/2 pi (R_sig + R_i) C_G = 1/2 pi (1 k Ohm + 1 M Ohm) (0.1 times 10^- 6) cong 1.59 Hertz \r\n f_LC = 1/2 pi times (R_0 + R_L) L C = 1/2 pi (1 k Ohm + 1.9 k Ohm) (4.7 times 10^- 6) f_L C = 11.67 Hertz f_LS = 1/2 pi R_eq C_s = 1/2 pi (R_s // 1/g_m) c_s [Because R_s // 1/g_m = R_eq] = 1/2 pi (1.2 // 1/1.18 ms) (10 m F) = 39.04 Hertz f_HI & F_HO (1) leftarrow f_Hi = 1/2 pi R_th c_i