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CHAPTER 7: FILTER DESIGN AND REALIZATION
Impedance [kΩ]
Impedance magnitude [kΩ]
80
60
40
20
0
−20
−40
0.1 1 10
Frequency [MHz]
Model [Re]
Model [Im]
System [Re]
System [Im]
Figure 7.16: DM Inductor: matching of the measured and simulated impedance
100
90
80
70
60
50
40
30
20
10
0
0.1 1 10
Frequency [MHz]
Phase U
Phase V
Phase W
Figure 7.17: DM Inductor: matching of the measured and simulated impedance
R1
L1
C1
R2
L2
C2
Figure 7.18: Ferrite tube model
Parameter Value
L1 [µH] 4.71
L2 [µH] 0.55
R1 [Ω] 72
R2 [Ω] 123
C1 [µF] 355
C2 [µF] 110
Table 7.7: Model parameters
Once the inductors have been modelled it’s the turn of the capacitors. They have a
quite easy measured experimentally impedance to match, as it can be seen in Fig. 7.20
and 7.21. The model is just a capacitor in series to an inductor, and the values for the
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