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It seems that it is not possible for Lumped port.
See details: https://www.edaboard.com/threads/how-does-the-hfss-calculate-the-impedance-of-a-lumped-port.103156/
Geometrically that structure is easy to model. Just create multiple spheres with same center point which is offset from vertical axis, then sequentially subtract inner spheres from outer ones. Take a cross section and sweep it around vertical axis.
Hello there!
In a nutshell i have successfully simulated and analyzed diff pair impedance using wave port excitations in driven terminal mode. But i faced a problem while tried to calculate same diff pair impedance using lumped ports excitations in driven terminal mode.
HFSS help says that it is...
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