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# FL10quiz19 - B d The frequency spectrum of a discrete-time...

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ESE 351 Quiz 19 Name: 11/11/10 Sections 11.3.1, 11.4.1 a. What is the gain at frequency ω of a continuous-time system whose transfer function is H ( s )? b. The text talks about the input of the form e i ( ωt + φ ) . What is the name given to this type of input? c. Consider a continuous-time system with a transfer function H ( s ). Suppose that the input to the system is given by u ( t ) = Ae iωt 1( t ). The steady-state output y ss ( t ) of the system takes the form: Be iωt . Find the coeﬃcient
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Unformatted text preview: B . d. The frequency spectrum of a discrete-time system repeats itself after a certain frequency θ m . So there is no new information beyond this frequency θ m . This is also the highest frequency of the discrete-time spectrum. What is the value of θ m ? e. Why does the gain | H ( iω ) | of a continuous-time physical system typically go down to zero as frequency ω goes to inﬁnity?...
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