Revision as of 11:14, 23 August 2011

Homework 1, ECE438, Fall 2011, Prof. Boutin

Due Wednesday August 31, 2011 (in class)

Before beginning this homework, review the following table of CT Fourier transform pairs and properties, which features the CT Fourier transform in terms of $ \omega $ (in radians per time unit). You should have seen each of these in ECE301. Then compare with the following table of CT Fourier transform pairs and properties, which used the CT Fourier transform in terms of frequency $ f $ in hertz. Note that we will use the latter in ECE438.

Question 1

in ECE301, you learned that the Fourier transform of a step function $ x(t)=u(t) $ is the following: $ {\mathcal X} (\omega) = \frac{1}{j \omega} + \pi \delta (\omega ). $ Use this fact to obtain an expression for the Fourier transform $X(f)$ (in terms of frequency in hertz) of the step function. (Your answer should agree with the one given in this table.) Justify all your steps.

Question 2

Discussion

Please discuss the homework below.

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