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Figure 1: Die Dimensions and Bonding Pad Positions
ground plane underneath the die.
In this arrangement, YAT-D series
dice perform superbly to 26.5 GHz.
At higher frequencies, however, the
attenuator performance degrades due
to parasitic effects between the die
and the ground plane.
Wire Wire Length
(mm)
Wire Loop
Height (mm)
All
wires
0.25
0.15
Table 3 Recommended Wire
Lengths
Table 3 Recommended Wire Lengths
Wire Wire Length (mm)
Wire
Loop Height (mm)
All wires
0.25 0.15
The die and the ground plane
essentially form parallel conductive
plates which create unintended
capacitance expressed by the parallel
plate capacitance equation (1) below.
Figure 2: Assembly Diagram
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