Continue to Site

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.

Register Log in

How to create touchstone file?

Status
Not open for further replies.
C

cl254

Junior Member level 2
Joined
Jun 25, 2009
Messages
23
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,458
Hi All,

From ADS's .dds file, using table format, I have output a column of frequency, a column of magnitude, and a column of angle, and I have used Excel to separate them and saved as .txt file. Please let me know how to create .s1p file from this data so I can use WinCal's "Measure" to display the data.

The point is that in ADS my dataset contains many blocks, and I only want one of them to be output as .s1p file.

Thank you very much.

cl254
 

dds = data display template
ds = data file

The usual way to create Touchstone from ADS data sets is to use Tools > Data File Tool ... from the data display window.


If you want to do it manually by copy & paste from the table, you need to have the Touchstone header in your file.
For S1P with mangnitude angle and frequency unit GHZ, this is the header:

# GHZ S MA R 50.00000

Then, you have the data lines with frequency, magnitude and angle separated by spaces.
One line per frequency.

That's it.
 

volker_muehlhaus said:
dds = data display template
ds = data file

The usual way to create Touchstone from ADS data sets is to use Tools > Data File Tool ... from the data display window.


If you want to do it manually by copy & paste from the table, you need to have the Touchstone header in your file.
For S1P with mangnitude angle and frequency unit GHZ, this is the header:

# GHZ S MA R 50.00000

Then, you have the data lines with frequency, magnitude and angle separated by spaces.
One line per frequency.

That's it.
Click to expand...

Thank you for the quick reply, Volker. But Data File Tool outputs all s-param together at the same time, since the simulation has multiple terminals and each terminal gives one .s1p file, while I only want one of the .s1p file in the dataset.

Even if I manually create a file with header, how do I save it so its extension is .s1p instead of .s1p.txt, so I can use WinCal to read it.

Thank you!
 

Why not let ADS do everything for you and generate the S1P file from a new simulation. Create a simple schematic reading the dataset file (.ds) you have. Then terminate the required input pin, the one you need the S1P data for, with the Term element and the others with ideal 50 Ohm resistors. You can then simulate this with the required frequency sweep and place an SPOutput symbol on the schematic to generate the S1P datafile automatically. It will give 1-port s-parameter simulation data the required .s1p extension automatically.

The following example shows a simple case for 2-port data but it can be used for other port counts by using the necessary SNP element and additional load resistors as required.

schematic.png
 
  • Like
Reactions: Chao Gu

    V

    Points: 2
    Helpful Answer Positive Rating
    C

    Chao Gu

    Points: 2
    Helpful Answer Positive Rating
cl254 said:
Even if I manually create a file with header, how do I save it so its extension is .s1p instead of .s1p.txt, so I can use WinCal to read it.
Click to expand...

This depends on your text editor. If you use Windows notepad, set the file type listbox to "All files (*.*)" when you save. This will then use the filename as is, without adding the .txt suffix.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top