Hi.
I want to see if my 50 ohms track in the stripline configuration has how much impedance.
Maybe it needs to tune the width of that track.
I know I can theoretically use ads line calc.
But is anyway to get the port impedance from Layout EM Environment?
Thanks.
I think you want the line impedance, not port impedance?
Simulate a short length of line in 2-port (!) configuration. Then calculate Zline=sqrt(Z11/Y11).
Thanks so very much dear volker, that works good.
I test it for a three layer stripline.
I check the effect of line's length and see that the plotted impedance of line has very changing value over freq.
Also I check this way in the whole circuit and see a similar behaviour.
Clearly, this way is far from cst port mode information, that integrates all needed information of the port in one click in 1 window.
Thanks so very much dear volker, that works good.
I test it for a three layer stripline.
I check the effect of line's length and see that the plotted impedance of line has very changing value over freq.
I know, other tools like Sonnet can also show the line impedance very easily. But you asked how to do it in Momentum, and I described a method that can give you the desired results - if used properly.
Consider CST, Port Mode Information. the information was calculated even the whole circuit is defined. it is not necessary to open a new cst workspace and draw a line for imp. calculation.
i only want to make a comparation dear volker.
I know, other tools like Sonnet can also show the line impedance very easily. But you asked how to do it in Momentum, and I described a method that can give you the desired results - if used properly.
Consider CST, Port Mode Information. the information was calculated even the whole circuit is defined. it is not necessary to open a new cst workspace and draw a line for imp. calculation.
I see ... and agree, as far as wave ports are concerned.
That is what Sonnet also does, as a side results from port calibration.
Just for completeness: ADS Momentum also has a port mode solver option, but only for thin metal (sheet), and I don't know how to get (plot) that port impedance. For ADS FEM, I am not sure ... you should be able to get the wave port impedance, similar to CST port mode solver.