Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

[Help] S-parameter to Time Domain

Status
Not open for further replies.

camel_RF

Junior Member level 3
Joined
Apr 9, 2004
Messages
25
Helped
2
Reputation
4
Reaction score
1
Trophy points
1,283
Activity points
275
ads s2p circuit elements

Hi,

I have a S2P file and would like to know how can I transform it to time domain data.
Much appreciated if the explanation is given along with the formula.

I am thinking to use Matlab/ADS to convert the data.
Pls advise.

Any other comments and suggestion are welcome.

Thanks in advance
 

elkimhoc

Member level 3
Joined
Apr 24, 2004
Messages
57
Helped
12
Reputation
24
Reaction score
9
Trophy points
1,288
Activity points
370
s parameter to time domain

why do you want the S parameter in the time domain ?
 

    camel_RF

    Points: 2
    Helpful Answer Positive Rating

biff44

Advanced Member level 5
Joined
Dec 24, 2004
Messages
4,955
Helped
1,369
Reputation
2,734
Reaction score
1,045
Trophy points
1,393
Location
New England, USA
Activity points
37,223
from s parameters to time domain

Well, you need to do a fourier transform of the complex S parameters, one S parameter at a time. You need an arrange your data into an array of the desired S parameter, S11 for instance, and the more frequency points the better. Depending on the fourier transform that you pick from matlab, your data may have be arranged in a repeating frequency step size.
 
  • Like
Reactions: tony_lth

    camel_RF

    Points: 2
    Helpful Answer Positive Rating

    tony_lth

    Points: 2
    Helpful Answer Positive Rating

camel_RF

Junior Member level 3
Joined
Apr 9, 2004
Messages
25
Helped
2
Reputation
4
Reaction score
1
Trophy points
1,283
Activity points
275
convert s parameter lump element program

biff44 said:
Well, you need to do a fourier transform of the complex S parameters, one S parameter at a time. You need an arrange your data into an array of the desired S parameter, S11 for instance, and the more frequency points the better. Depending on the fourier transform that you pick from matlab, your data may have be arranged in a repeating frequency step size.


Do you have any sample program/reference/formula/method for the above transformation?
Thanks.
 

mreza1355

Member level 2
Joined
Feb 28, 2005
Messages
47
Helped
4
Reputation
8
Reaction score
1
Trophy points
1,288
Activity points
1,676
s11 time domain converter

If your s2p file is the s parameters of a passive circuit, you have to convert it to y or z parameters and then implement this two port y parameters by lumped elements at the center frequency of your design.
so around the center frequency your lumped model is valid and you can use this lumped model in time domain.

for increasing the frequency range of validity, you have to use an optmizer to match the s parameters of lumped network to your s2p file over the desired frequency range.
 

steve heazlewood

Newbie level 2
Joined
Sep 2, 2010
Messages
2
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,283
Activity points
1,291
Hi All, I know this is an old thread but i still get questions about it from my cstomers.
I am getting ready to release a commercial deployment of software to analyse s-parameters in the time domain as well as the frequency domain.

Have a look at the site if this is sill of interest, it is currently still under constructioin but it should give you an idea of what it can do.

Vector Analysis Analysis of measured S-Parameter data from Vector Network Analysers
 

steve heazlewood

Newbie level 2
Joined
Sep 2, 2010
Messages
2
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,283
Activity points
1,291
Hi All,

If you are interested in the software please go to the site and send me a mail via the secure form.

Thanks
 
Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top