Digital Signal Processing Reference
In-Depth Information
1.0
S
21
0.9
0.8
0.7
S
11
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
1
2
3
4
5
6
7
8
9
10
Frequency (GHz)
Figure 9-46
Figure for Problem 9-1.
S
21
(
f
)
Real
Imaginary
0.2
0.1
Frequency, GHz
3
2
1
1
2
3
−
−
−
0.1
0.2
Figure 9-47
Figure for Problem 9-2.
9-7
If a differential pair has 10% of its energy transformed into the common
mode when driven differentially, is 10% of its energy transformed into
the differential mode when driven commonly? Show the math to support
your answer.
9-8
Derive the
ABCD
matrix for the pi circuit shown in the bottom of
Table 9-2.
9-9
For the differential pair in Figure 9-49, at what frequency will the ACCM
be 100%? Assume that the effective permittivities are
ε
r,
odd
=
3
.
5 and
ε
r
=
4
.
0.
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