input impedance of loaded transmission line with ADS

[mitrahallaj]

anyone can help me ?
I want to calculate input gamma of a loaded transmission line with ADS .
I have connected a complex load to a 4 port line , but I don't know how to show the input gamma plot ( S-parameter)

 

[pancho_hideboo]

Simply calculate input gamma based on a definition you specify.

 

[mitrahallaj]

how to use parameter sweep to calculate entrance GAMMA in transmission line

hello,
I want to see the plot of entrance Gamma , while the load impedance is variable. how can I use S-parameter, sweep plan and parameter sweep .
I want to sweep the load then see the Gamma .

 

[pancho_hideboo]

Re: how to use parameter sweep to calculate entrance GAMMA in transmission line

I want to see the plot of entrance Gamma

What do you mean by "entrance Gamma" ?

while the load impedance is variable.
how can I use S-parameter, sweep plan and parameter sweep .
I want to sweep the load then see the Gamma.

Very easy.
(1) Use built-in sweep ability of S-parameter Analysis for load impedancce, if you do one point frequency analysis.
(2) Use Parameter sweep for load impedancce, if you do frequency sweep.

However load impedance is a complex number, so you have to sweep two variables, real and imaginary or magintude and angle.