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Analog Electronics
book

Analog Electronics

by Ian Hickman
October 2013
Intermediate to advanced content levelIntermediate to advanced
342 pages
16h 43m
English
Newnes
Content preview from Analog Electronics
13 6
Analog Electronics
calculator. At ω,, = 1 the response of the second-
order section is unity since D = Q = \ , i.e. for this
value of damping the peak is entirely to the left of
the corner frequency, as can be seen in Figure 2.8b
for the curve /? = 1, corresponding to Q = \ for
our active filter. Thus the complete third-order
filter's response at the corner frequency is3 dB,
the same as the first-order section alone. However
high the order of a Butterworth filter, the
bandwidth is still defined as that frequency at
which the response is -3 dB relative to the low-
frequency response - or to the high-frequency
response in the case of a high-pas ...
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Publisher Resources

ISBN: 9781483162287