Prof. Rich Kozick
ELEC 470, Spring 1998
Homework 2
Date Assigned: Friday, January 23, 1998
Date Due: Monday, January 26, 1998
 Please read sections 2.1 through 2.5 in the
Haykin text, which provide a review of the Fourier transform.
Note that Appendix 11 contains several tables, including
tables of Fourier transform pairs and properties.

What are reasonable values for R and C if the "envelope
detector" circuit shown below is used to demodulate a commercial
AM radio station? The carrier frequencies for AM radio stations
range from approximately 550 kHz to 1.5 MHz.
Explain your reasoning.
[CIRCUIT DIAGRAM OMITTED IN HTML VERSION, BUT IS
AVAILABLE ON PAGE 130, FIGURE 3.7(a) IN THE HAYKIN TEXT]
Thank you.
Have a nice weekend.