ELEC 320, Fall 2004
Prof. Rich Kozick
Homework 12
Date Assigned: Friday, October 22, 2004
Date Due: Friday, October 29, 2004
** Changed to Monday, November 1 **
 Reading:
Please continue to study Chapter 3 in the Lathi text on Fourier series,
Sections 3.53.9.
 Lab Design Project:
Please read and
browse Lab 6 on the web.
For November 1 and 2, please list some potential project ideas,
and identify your lab partners for the project.

Please solve the following
problems in Chapter 3 of the Lathi text.
Problems 3.51 (parts d and e only), 3.52, 3.53.

Develop a Matlab program to plot the time signals
using the truncated exponential Fourier series
using your results from problems 3.51 (parts d and e).
The program fstrun_exp.m
that we used in class may be a useful template for your program.
 Suppose that the signal f(t) in Figure P3.43(e)
in the Lathi text is applied to a lowpass RC circuit with
RC = 0.5 and frequency response H(w) = 1 / (1 + j (w/2)).
 Find an expression for the exponential
Fourier series of the output signal, y(t).
Use your result from Problem 3.51(e) and the frequency response, H(w).
 Develop a Matlab program to plot y(t) using a
truncated exponential Fourier series.
You may want to refer to the Matlab program
sqrfilt.m
that we used in class
to find the output of a lowpass RC circuit with frequency response
H(w) = 1 / (1 + j (w/w_{c})) to a square wave.
This program uses the compact trigonometric Fourier series.
Thank you, and have a great Fall break!