hfss zpi

hello everyone

We can get several port impedances in HFSS,like Zpi,Zpv and Zvi which are usually different. But I don't know how to choose them in different ways.For instance,I want to simulate a microstrip line which's impedance is 50ohm in HFSS.which port impedances I should choose to compare?Thanks!

Best regards
Kezman

yes Zpi,Zpv and Zvi are usually different, but they are also usually not much different. people usually use Zpi when they see "much" different. There is no universal standard because the term "impedance" is ambiguous for Non-TEM wave/mode.

For further details, look for the discussion on "characteristic impedance" in this forum, IEEE or the whole internet.