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ANSYS HFSS 15.0

The industry standard for simulating 3-D, full-wave, electromagnetic fields.

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— Hello,Not sure I understand what the passivity in HFSS should be. I read the manual and it explains about the need to have positive eigenvalues.But it does not say what a range of acceptable values...

Passivity in HFSS is a measure of the stability of the system. Generally, a system is considered to be stable if the eigenvalues of the system are all positive. A range of acceptable values for passivity in HFSS is typically between 0.1 and 1.005.