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Principles of Analog Electronics
book

Principles of Analog Electronics

by Giovanni Saggio
January 2014
Intermediate to advanced content levelIntermediate to advanced
567 pages
23h 13m
English
CRC Press
Content preview from Principles of Analog Electronics
Frequency Domain
243
The impedance Z depends on frequency and its amplitude and phase are
ZR L
C
=+
2
2
1
ω
ω
tanZ
L
C
R
=−
1
1
ω
ω
which correspond respectively to the graphs in Figures 7.25 and 7.26.
Observation
The value of the Q factor is fundamental to discriminate the carrier frequency
of just one radio station, with respect to the nearest ones. Figure 7.24 repre-
sents the situation of a high vs. low Q factor, and demonstrates how a low value
lets frequencies of carriers of adjacent stations pass, so that the nal result is
to hear more than one radio station at the same time.
freq [kHz]
9.19.2 9.39.4 9.59.6 9.79.8
high Q
low Q
FIGURE 7.
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Publisher Resources

ISBN: 9781466582026