A common emitter amplifier, with the circuit shown in Figure 1, is designed to have a Bode magnitude and phase frequency response as shown in Figure 2. The BJT has the following parameters: B = 100, VA → 0, Cn = 500f F, and Cu = 10fF. Use Vr = 26mV, Rc an external capacitor used to achieve the desired frequency response. = 10kN and note that the capacitor Cx is

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A common emitter amplifier, with the circuit shown in Figure 1, is designed to have a Bode magnitude
and phase frequency response as shown in Figure 2. The BJT has the following parameters: B
VA → 0, C = 500fF, and Cu =
an external capacitor used to achieve the desired frequency response.
= 100,
= 10kN and note that the capacitor Cx is
10fF. Use Vr = 26mV, Rc
Vcc
J
VIN O
O VOUT
Сх
RC
70
195
180
60
165
150
50
135
120
105
90
30
75
60
20
45
10
30
15
1.E+05
1.E+06
1.E+07
1.E+08
1.E+09
1.E+10
1.E+11
1.E+12
1.E+13
1.E+05
1.E+06
1.E+07
1.E+08
1.E+09
1.E+10
1.E+11
1.E+12
1.E+13
Frequency, rad/sec
Frequency, rad/sec
ANSWER THE FOLLOWING:
Vout
1. Give the generalized form of the amplifier's transfer function A(w)
2. What is the value of Capacitor Cy?
(w).
Vin
X.
3. What should be the quiescent collector current of the transistor?
|A(@)], dB
ZA(@), degrees
Transcribed Image Text:A common emitter amplifier, with the circuit shown in Figure 1, is designed to have a Bode magnitude and phase frequency response as shown in Figure 2. The BJT has the following parameters: B VA → 0, C = 500fF, and Cu = an external capacitor used to achieve the desired frequency response. = 100, = 10kN and note that the capacitor Cx is 10fF. Use Vr = 26mV, Rc Vcc J VIN O O VOUT Сх RC 70 195 180 60 165 150 50 135 120 105 90 30 75 60 20 45 10 30 15 1.E+05 1.E+06 1.E+07 1.E+08 1.E+09 1.E+10 1.E+11 1.E+12 1.E+13 1.E+05 1.E+06 1.E+07 1.E+08 1.E+09 1.E+10 1.E+11 1.E+12 1.E+13 Frequency, rad/sec Frequency, rad/sec ANSWER THE FOLLOWING: Vout 1. Give the generalized form of the amplifier's transfer function A(w) 2. What is the value of Capacitor Cy? (w). Vin X. 3. What should be the quiescent collector current of the transistor? |A(@)], dB ZA(@), degrees
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