site:www.edaboard.com zpi zpv zvi

Hi,

What is the exact mean of these two line in HF55 setting?
I'm puzzled with them.
Pls help me.Thanks.

In HFSS impedance line allows to calculate Zpv and Zvi.

In fact, when the mode at port is not a pure TEM, the 3 impedance definitions (Zpi, Zpv and Zvi) are different; it is possible calculate only the first kind of impedance without setting the path, the impedance line.

The calibration line allows to define polarization.

Regards

Thank you yuyu for your response.

What's the exact mean of Zpi,Zpv,Zvi?

Zvi= V/I
Zpi= P/I*I
Zpv=V*V/P

The 3 definitions are equal in the case of TEM mode. In a non TEM mode
it is not possible to define univocally the impedance because, for example, it is not possible to have a unique value for the voltage (it depends on the path chosen, it is a voltage not a potential).

Regards.

HI
The setting of impedance line is define a integral path,power (E multiply H*) and current are calculated through this path .
Caocao

The setting of impedance line is define an integral path to calculate the voltage.
Power and current are calculate also without defining the path.
In fact, HFSS default calculates Zpi=P/I*I without path defined.

Regards.