s2z

Convert S-parameters to Z-parameters

Syntax

``z_params = s2z(s_params,z0)``

Description

example

````z_params = s2z(s_params,z0)` converts the scattering parameters `s_params` into the impedance parameters `z_params`. The `s_params` input is a complex N-by-N-by-M array, representing M N-port S-parameters. `z0` is the reference impedance; its default is 50 ohms. `z_params` is a complex N-by-N-by-M array, representing M N-port Z-parameters. ```

Examples

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Convert S-parameters to Z-parameters. Define a matrix of S-parameters.

```s_11 = 0.61*exp(j*165/180*pi); s_21 = 3.72*exp(j*59/180*pi); s_12 = 0.05*exp(j*42/180*pi); s_22 = 0.45*exp(j*(-48/180)*pi); s_params = [s_11 s_12; s_21 s_22]; z0 = 50;```

Convert to Z-parameters.

`z_params = s2z(s_params,z0)`
```z_params = 2×2 complex 102 × 0.1141 + 0.1567i 0.0352 + 0.0209i 2.0461 + 2.2524i 0.7498 - 0.3803i ```

Input Arguments

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N-port- S-Parameters, specified as a complex N-by-N M array, representing M N-port S-parameters.

Reference impedance of N-port S-Parameters, specified as positive real scalar in ohms.

Note

`z0` can be a positive real scalar or vector. If `z0` is a vector, then the vector must be equal to the number of network parameter data points.

Output Arguments

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N-port Z-parameters, specified as a complex N-by-N-by-M array, representing M N-port Z-parameters.

Alternatives

You can also use network parameter objects to perform network parameter conversions. For more information, see RF Network Parameter Objects.