Data Sheet

Figure 2-1
For routing microstrip lines UNDERNEATH the NAD on layer 1, these ground cutouts internal
to the NAD need to be accounted for in the strip line calculation.
For example, consider the following stackup for a U2 PCB: Figure 3-1
Figure 3-1
Assume the U2 PCB Board above with a 4 layer stackup with ground cut away on layer 2 so
the microstrip lines reference ground on layer 3. The dielectric thickness from L1 to L3 is