GW Instek GRF-3300 Series Student Manual - Manual (Page 16)

GRF-3300 Manual
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We still need to consider two issues: one is that the minimum practical distance is
0.5mm, and the other one that the impedance of pin connection lines is not 50ȍ which
affects the filter frequency response. Therefore, after fine tuning, the final result becomes
as follows.
mm s
mm w
mm l
mm s s
mm w w
mm l l
9 . 0
2 . 2
17
5 . 0
1 . 1
9 . 16
2
2
2
3 1
3 1
3 1
Summarizing the above result, we get:
x L1, L3=1.1x16.9mm, gap=0.5mm
x L2=2.2x17mm, gap=0.9mm
x Lo=2.3x5mm, for 50 ȟ
x Lp=1.6x8mm, for pin connection
The entire filter is designed as Figure 16-7. The simulation results are shown in
Figure 16-8.
p
L
o
L
o
L
1
L
2
L
3
L
o
L
o
L
p
L
Figure 16-7