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Unformatted text preview: EE 200 Fall 2009 (Weber) Homework 6 At the upper right corner on page 1 of all homeworks, show: Last name, First name Date EE 200, Homework # Show intermediate steps whenever possible. 1. A continuoustime LTI system has the impulse response h ( t ) = ( t ) . 1 e . 1 t u ( t ) a. What is the frequency response H ( j ) of the system? b. Plot the magnitude squared of the frequency response:  H ( j )  2 = H ( j ) H * ( j ) c. At what frequency does the magnitude squared of the frequency response reach its maximum value? At what frequency does it reach 3db below the maximum value? d. For an input of x ( t ) = 10 + 20 cos (0 . 1 t ) + ( t . 2) what is the output? Hint: Use superposition to find y ( t ) by finding the response of each part of x ( t ) the easiest way (impulse response or frequency response). 2. Problem P10.9 from the textbook. The x ( t ) input to the LTI system is the one with the frequency domain representation in Fig. P10.9. For each of the five parts of the problem figure out which of thedomain representation in Fig....
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This note was uploaded on 02/26/2010 for the course EE 30446 at USC.
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