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STD
Joined: 10 Dec 2003
Posts: 78
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 20 Dec 2003 6:53 Impendance Line & Calibration Line |
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Hi,
What is the exact mean of these two line in HF55 setting?
I'm puzzled with them.
Pls help me.Thanks.
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yuyu
Joined: 27 Mar 2002
Posts: 170
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| 22 Dec 2003 15:56 Re: Impendance Line & Calibration Line |
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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
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STD
Joined: 10 Dec 2003
Posts: 78
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| 23 Dec 2003 5:47 |
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Thank you yuyu for your response.
What's the exact mean of Zpi,Zpv,Zvi?
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yuyu
Joined: 27 Mar 2002
Posts: 170
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| 23 Dec 2003 12:34 Re: Impendance Line & Calibration Line |
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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.
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caocao
Joined: 23 Nov 2003
Posts: 117
Helped: 3
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| 23 Dec 2003 14:58 Re: Impendance Line & Calibration Line |
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HI
The setting of impedance line is define a integral path,power (E multiply H*) and current are calculated through this path .
Caocao
| yuyu wrote: |
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. |
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yuyu
Joined: 27 Mar 2002
Posts: 170
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| 25 Dec 2003 20:48 Re: Impendance Line & Calibration Line |
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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.
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