AnsweredAssumed Answered

momentum vias

Question asked by MESFET98 on Oct 24, 2003
Latest reply on Oct 26, 2003 by ALEPEREZ
Hello,

I simulated a cylindrical via in momentum with the following dimensions:

Height= 8mils
Diameter=8mils
Via pad (square)=13.5mils
Metal thickness=1.4mils

Substrate parameters are
GETEK
Dielectric constant=3.83
Loss tangent=0.008
Configuration of the substrate is:
Strip METAL
GETEK dialetric VIA
GROUND


I then simulated in ADS a VIA2 component (with the same dimensions) from the Tlines Microstrip Palette.

The inductance given by momentum was different than the inductance given by the VIA2 component.

Inductance of via (momentum)=58.7pH
Inductance VIA2 =21pH

Why is that?

I would expect them to be the same.

Any clues?

Thanks  

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