ELEC 320, Fall 2006
Prof. Rich Kozick
Date Assigned: Monday, September 4, 2006
Date Due: Wednesday, September 6, 2006
(Homework 3 is also due on this day)
continue to study Chapter 1 in the Lathi text.
Pay special attention to the following:
what is a signal,
what is a system, continuous-time versus discrete-time,
and what does it mean for a system to be
linear, time-invariant, and causal.
- Suppose you need to design a filter for a voltage signal
that has the form
v(t) = 0.05 cos(200 t) + 10 cos (20,000 t) volts
The signal component at frequency 200 rad/s is the desired signal,
while the component at 20,000 rad/s is an undesired interference signal.
The filter should pass the 200 rad/s component with near unity gain,
and the interference at 20,000 rad/s should be attenuated by the filter
so that its amplitude is at least 10 times smaller than the desired
What order filter is required to achieve this?
Explain your reasoning.
- (a) Specify a circuit that performs as a band-stop filter.
You do not have to analyze the cutoff frequency or do a full Bode
plot, but explain why it operates as a band-stop filter.
(b) For each filter given in
Problem 5 of Homework 3,
review the filter type (low-pass, high-pass, band-pass, or
determine the filter order (first-order or second-order).