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Name: v 3 l“ Student ED: ECE 202 EXAM 3
April 13, 2007 No textbooks, notes or HW solutions.
Calculators are allowed.
Exam is 50 minutes. To maximize your score on this exam, read the questions carefully and write
legibly. For those problems that allow partial credit, show your work clearly.
a Good luck. a 9 0 l. [25] Answer the following questions brieﬂy.
a) For a circuit with impulse response Mt) = e‘z’uO), ﬁnd the output to the input x(t) = u(t) using the convglution integral. t:
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to double the bandwidth without changing the center frequency? l u:
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Whether the circuit is stable or not. Explain why. pews (at weer} {Ami unset; c) For a circuit with transfer function, T (s) z , determine Mei simple Sande net at! er We WWW
art”. it“ drift? LHP. d) A voltage source of v(t) = 10 cos(lOOt) is applied to a lowpass ﬁlter with a transfer
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f() ”2 ( ) 9”; ( ) 257;; fundamental frequency in Hz. cos(500m‘) + .... Determine the meat : earls 2. [25] Given the following inverting ampliﬁer:
a) [12] Find the transfer function, T (S) . b) [13] Find the output voltage, 112 (t) , when the input is v1(t) = u(t) . l 2am“ ~ r W ":1 ._ ‘ee ” 1‘ “Law...“
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Determine Whether this is a lowpass, highpass, bandpass or bandstop ﬁlter. 3. [25] Given the network function T (s) = , construct the Bode plot l 4. [25] For the following rectangular wave with amplitude 1 V and period 1 see:
a) [5] Determine whether the signal has odd symmetry or even symmetry.
b) [20] Determine the Fourier series coefﬁcients for this signal, i.e. ﬁnd expressions for ama b n7 M' or 0.53?
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