[SI-LIST] Return Current
- From: Zhangkun <zhang_kun@xxxxxxxxxx>
- To: si-list <si-list@xxxxxxxxxxxxx>
- Date: Tue, 09 Dec 2003 19:40:02 +0800
Dear All:
Recently, one of my colleagur are doing some simualtion about return current of
transmission line. The simulation is very simple. Our tools is HFSS of Ansoft.
Setting that the transmission line is on the x-axis and reference is in x-y
plane. According to theory about TEM wave, on the surface of reference plane,
Hy is greater than Hx. My colleague does two simulation.
(1)The "wave ports" are place on the two terminal of transmission line. The
simulation result is Hy>>Hx. The result is right.
(2)On one terminal of transmission line, there is one "voltage drop". On the
other terminal of transmission line, there is one resistor of 50ohm. The
simulation result is Hy<<Hx. The result does not agree with theory.
We do not know why. Could you give me some advice?
Maybe this question should not be asked here. It should be send to the vendor.
But I think I could get answer more quickly here:) About one years ago, there
is one hot discussion about whether this kind of question could be asked on
si-list.
Best Regards
Zhangkun
2003.12.9
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