Module touchstone
source code
Module to export network parameters to the Touchstone v1.1 format.
The Touchstone file format can contain S, Y, Z, H or G parameters,
though in EMPro, it's primarily used to export simulated S parameters.
The following example retrieves the S parameters from the first
simulation of the active project (a two port), and exports it to
results.s2p. The default reference impedance is 50 ohms, and complex
numbers are always written using the real-imaginary format.
Example:
from empro.toolkit import touchstone, portparam S =
portparam.getSMatrix(sim=1) touchstone.write('results.s2p', S)
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None
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write(path,
matrix,
parameter="S" ,
reference=...=50 ,
format=...=MA)
export an frequency dependent parameter matrix to a Touchstone file: |
source code
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FORMATS = ('DB', 'MA', 'RI') |
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DB = 'DB' |
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MA = 'MA' |
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RI = 'RI' |
write(path,
matrix,
parameter="S" ,
reference=...=50 ,
format=...=MA)
| source code
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export an frequency dependent parameter matrix to a Touchstone
file:
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path: path to touchstone file, with or without the .snp extension.
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matrix: square matrix of one-dimensional datasets
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parameter: parameter indicator as written in the option line. Legal
values are: S, Y, Z, H, G. The default is S.
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reference: reference impedance (ohms) as written in the option line.
The default reference resistance is 50 ohms.
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format: format of complex data. Legal values are DB (dB-angle), MA
(magnitude-angle) and RI (real-imaginary). Angles are in degrees. The
default is MA.
- Returns: None
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