1/19/2008
Copyright 2005 – Tim Hoerning
33
Filtering Basics
•
Filters are designed to allow some frequencies
to pass unaltered (the pass band), while some
are attenuated (the stop band).
•
Filters are described by the size and location of
the bands and the attenuation possible in the
stop band
frequency
dB
frequency
dB
frequency
dB
frequency
dB
Ideal Filter types
Low Pass
High Pass
Band Pass
Band Stop