QUESTION 3 a) Determine the Fourier series ao, an and b₁ of the periodic signal, x(t), illustrated in Figure Q3(a). Then, calculate the first 3 non-zero harmonics of the series. where wo = -T x(1) b) Knowing that the values of A = 1 and T = 4, put x(t) under the form: n=3 x(t) =+a, cos(not) + b sin(not) n=1 -A Figure Q3(a): Periodic signal ii. c) The signal x(t) as described in b) is applied to a circuit whose transfer function is given by: Y(s) H(s) = X(s) 0.25s 1+0.25s where X(s) and Y(s) are the Laplace transfer functions of the input x(t) and the output y(t) of the circuit, respectively. i. Determine the gain and the phase of the circuit. Find then the output of the circuit y(t). Explain and reflect on the results.

Introductory Circuit Analysis (13th Edition)
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Publisher:Robert L. Boylestad
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QUESTION 3
a) Determine the Fourier series ao, an and bn of the periodic signal, x(t), illustrated
in Figure Q3(a). Then, calculate the first 3 non-zero harmonics of the series.
b)
where wo =
-T
x(t) =
ii.
x(t)
an
A
Knowing that the values of A = 1 and T = 4, put x(t) under the form:
n=3
+
Σ an cos(nwot) + bn sin(nwot)
n=1
T
4
T
2
-A
Figure Q3(a): Periodic signal
c)
The signal x(t) as described in b) is applied to a circuit whose transfer function
is given by:
Y(s)
0.25s
H(s) = =
x(s) 1 +0.25s
where X(s) and Y(s) are the Laplace transfer functions of the input x(t) and the
output y(t) of the circuit, respectively.
i.
Determine the gain and the phase of the circuit.
Find then the output of the circuit y(t). Explain and reflect on the results.
Transcribed Image Text:QUESTION 3 a) Determine the Fourier series ao, an and bn of the periodic signal, x(t), illustrated in Figure Q3(a). Then, calculate the first 3 non-zero harmonics of the series. b) where wo = -T x(t) = ii. x(t) an A Knowing that the values of A = 1 and T = 4, put x(t) under the form: n=3 + Σ an cos(nwot) + bn sin(nwot) n=1 T 4 T 2 -A Figure Q3(a): Periodic signal c) The signal x(t) as described in b) is applied to a circuit whose transfer function is given by: Y(s) 0.25s H(s) = = x(s) 1 +0.25s where X(s) and Y(s) are the Laplace transfer functions of the input x(t) and the output y(t) of the circuit, respectively. i. Determine the gain and the phase of the circuit. Find then the output of the circuit y(t). Explain and reflect on the results.
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