(iv) By applying the Duality property to the result of (iii), show that the filter with the im response h(t) = shifts the input by – 90°. Express the result using signum functic tt The signum function is defined as follows:

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
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Publisher:Robert L. Boylestad
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answer (iv)

(c)
(i) Write an expression (poof not required) for the Fourier Transform of a rectangular pulse of
width 2a and height 1 (The pulse is symmetrical about the y -
ахis).
(ii) Use the Inverse Fourier Transform of the expression you have given in (i) to evaluate the
sin aw
integral
dw. Consider the two cases a > 0 and a < 0.
Transcribed Image Text:(c) (i) Write an expression (poof not required) for the Fourier Transform of a rectangular pulse of width 2a and height 1 (The pulse is symmetrical about the y - ахis). (ii) Use the Inverse Fourier Transform of the expression you have given in (i) to evaluate the sin aw integral dw. Consider the two cases a > 0 and a < 0.
(ii) Use the Inverse Fourier Transform of the expression you have given in (i) to evaluate the
r00 sin aw
integral o
dw. Consider the two cases a > 0 and a < 0.
(iii) The transfer function of a linear filter is given by H(w) =. Using the result of (ii) find the
jw
impulse response h(t) of the system.
(iv) By applying the Duality property to the result of (iii), show that the filter with the impulse
1
response h(t)
shifts the input by – 90°. Express the result using signum function.
nt
The signum function is defined as follows:
1 x > 0
sgn(x) = {-1 x < o
Transcribed Image Text:(ii) Use the Inverse Fourier Transform of the expression you have given in (i) to evaluate the r00 sin aw integral o dw. Consider the two cases a > 0 and a < 0. (iii) The transfer function of a linear filter is given by H(w) =. Using the result of (ii) find the jw impulse response h(t) of the system. (iv) By applying the Duality property to the result of (iii), show that the filter with the impulse 1 response h(t) shifts the input by – 90°. Express the result using signum function. nt The signum function is defined as follows: 1 x > 0 sgn(x) = {-1 x < o
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