+ vi(t) t R₁ 0 a B 818 C₁ R₂ C₂ (a) Find the input impedance Z(s) = V₁(s)/I1(s) for the circuit above. Leave it in the form 1 SC Z(s) = R + What are R and C in terms of R₁, R₂, C₁, and C₂? (b) Find the transfer function H(s) = V₂(s)/V₁(s) and write it in the form H(s) = KS+B s + a 1 v₂ (t) What are K, B, and a in terms of R1, R2, C1, and C₂? (c) Choose realizable component values such the transfer function is H(s) = K Hint: Let C₁ C2 = C, pick R₂ to meet the ß constraint, then find the value of R₁ that meets the a constraint. What is your value of K? s+1000 8+100 (d) Find formulas for H(jw) and ZH (jw). (e) Explain the behavior of the circuit at the corner frequencies in terms of the input impedance Z(s) as well as the impedance R₂+1/sC2 of the output branch. What's special about Z(j100) and [R2 + 1/sC2]s=;1000? (f) Make a copy of the table below and complete the entries. Is this a frequency-selective or a frequency- shaping circuit? H(jw)| 20 log10 H(jw)| LH(jw) (deg)

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Author:Robert L. Boylestad
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R₁
it w
vi(t)
W
0
C₁
(a) Find the input impedance Z(s) = V₁(s)/I1(s) for the circuit above. Leave it in the form
1
SC
a
B
@→∞
Z(s) = R +
R₂
C₂
What are R and C in terms of R₁, R2, C₁, and C₂?
(b) Find the transfer function H(s) = V₂(s)/V₁(s) and write it in the form
s+B
H(s) = K
s+a
H(s) =
What are K, B, and a in terms of R₁, R2, C₁, and C2?
(c) Choose realizable component values such the transfer function is
v₂ (t)
.8+1000
KS
s + 100
Hint: Let C₁ C₂ = C, pick R₂ to meet the 3 constraint, then find the value of R₁ that meets the a
constraint. What is your value of K?
1
(d) Find formulas for |H(jw) and ZH (jw).
(e) Explain the behavior of the circuit at the corner frequencies in terms of the input impedance Z(s) as well
as the impedance R2+1/sC2 of the output branch. What's special about Z(j100) and [R2 + 1/sC2]s-j1000?
(f) Make a copy of the table below and complete the entries. Is this a frequency-selective or a frequency-
shaping circuit?
H(jw)| 20 log10 H(jw)| LH(jw) (deg)
Transcribed Image Text:R₁ it w vi(t) W 0 C₁ (a) Find the input impedance Z(s) = V₁(s)/I1(s) for the circuit above. Leave it in the form 1 SC a B @→∞ Z(s) = R + R₂ C₂ What are R and C in terms of R₁, R2, C₁, and C₂? (b) Find the transfer function H(s) = V₂(s)/V₁(s) and write it in the form s+B H(s) = K s+a H(s) = What are K, B, and a in terms of R₁, R2, C₁, and C2? (c) Choose realizable component values such the transfer function is v₂ (t) .8+1000 KS s + 100 Hint: Let C₁ C₂ = C, pick R₂ to meet the 3 constraint, then find the value of R₁ that meets the a constraint. What is your value of K? 1 (d) Find formulas for |H(jw) and ZH (jw). (e) Explain the behavior of the circuit at the corner frequencies in terms of the input impedance Z(s) as well as the impedance R2+1/sC2 of the output branch. What's special about Z(j100) and [R2 + 1/sC2]s-j1000? (f) Make a copy of the table below and complete the entries. Is this a frequency-selective or a frequency- shaping circuit? H(jw)| 20 log10 H(jw)| LH(jw) (deg)
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