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partly Open source replacement for ADS

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noori.re

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Hello,

I'm trying to realize a bandpass filter using a microstrip coupled line.
There is a possibility in ADS to simulate these structures (as shown below).

But I don't have ADS. Is there any open-source tool to do it for me?
Can I do it using Qucs? ( I had a look on Qucs, and it doesn't seem to be possible ).

1.PNG


2.PNG

--- Updated ---

I found the solution here in page 28.
 

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Ansys Electronics Desktop Student offer a wide range of RF components, including linear printed models and EM simulation:

 

I believe ngspice will "do stuff" with s-param models
but getting those from a layout geometry, I got nuthin'.

What is the goal and the "sandbox" - do you have the
models and just need the numerical solution(s) for
various analyses, or are you trying to what-if a physical
design through EM -> Sparam -> SPICE type feedback?

Free simulators tend to lag the $$$,$$$ ones in adding
the edgy RF / RFIC analyses that Real RF Designers
like to use (PSS, etc. are kind really analytical tools that
ride on tran; HB, I have no idea what underlies that).
And what you want for results > methods, even less idea.
 
I believe ngspice will "do stuff" with s-param models
but getting those from a layout geometry, I got nuthin'.

What is the goal and the "sandbox" - do you have the
models and just need the numerical solution(s) for
various analyses, or are you trying to what-if a physical
design through EM -> Sparam -> SPICE type feedback?

Free simulators tend to lag the $$$,$$$ ones in adding
the edgy RF / RFIC analyses that Real RF Designers
like to use (PSS, etc. are kind really analytical tools that
ride on tran; HB, I have no idea what underlies that).
And what you want for results > methods, even less idea
I wnated both synthesis and simulation. for my purpose the Qucs studio worked and did his job good.
 

Yeah, your initial question was misleading because the ADS screenshot shows the wrong circuit element. You would prefer CLIN for this (two coupled lines defined by even and odd mode) , not TLOC (one open circuited line with signal + ground pins).
 
Yeah, your initial question was misleading because the ADS screenshot shows the wrong circuit element. You would prefer CLIN for this (two coupled lines defined by even and odd mode) , not TLOC (one open circuited line with signal + ground pins).
I got it form my online course! Anyway, I think the problem is solved by now.
 

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