I am using the PADs HyperLynx v9.4.1 to run a RLC repot for a board I am working on. The report states that on one trace I has a total inductance of 6.9nH. However, using a third party calculator (same variables) I am getting a total inductance on the same traces as 25.08nH.
The formula for this calculator uses is as follows:
Lms = 0.00508L[ ln (2L/(W+H) + 0.5 + 0.2235*((W+H)/L)]
Lms = Inductance of microstrip in microhenreis
W = width of strip (inches)
L = length of strip (inches)
H = distance between the strip and the ground plane
What formula does HyperLynx use to calculate the inductance on the RLC report?
I’m trying to figure out why there is such a large discrepancy.
Any advice would be greatly appreciated.