# z2s

Convert Z-parameters to S-parameters

## Syntax

``s_params = z2s(z_params,z0)``

## Description

example

````s_params = z2s(z_params,z0)` converts the Z-parameters to the S-parameters.```

## Examples

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Define a matrix of Z-parameters.

```Z11 = -14567.2412789287 - 148373.315116592i; Z12 = -14588.1106171651 - 148388.583516562i; Z21 = -14528.0522132692 - 148350.705757767i; Z22 = -14548.5996561832 - 148363.457002006i; z_params = [Z11,Z12; Z21,Z22];```

Convert Z-parameters to S-parameters.

`s_params = z2s(z_params)`
```s_params = 2×2 complex 0.0038 + 0.0248i 0.9964 - 0.0254i 0.9961 - 0.0250i 0.0037 + 0.0249i ```

## Input Arguments

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N-port Z-parameters, specified as an N-by-N-by-M array of complex numbers, where M represents the number of frequency points of N-port Z-parameters.

Reference impedance in ohms, specified as one of the following:

• Positive real scalar when you want to specify the same the reference impedance for all ports in the network.

• Positive real vector of length N when you want to specify a different reference impedance for each port in the N-port network. (since R2023a)

• Positive real vector of length K when you want to specify a different reference impedance for each in the K frequencies in the data. (since R2023a)

If the reference impedance is a vector and the number of ports N equals the number of data frequencies K, N == K, then the `sparameters` object will assign each element of the vector to each port of the network. To specify reference impedances for each frequency in this case, specify `Z0` as a 3-D vector of length 1-by-1-by-K.

## Output Arguments

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N-port S-parameters, returned as a N-by-N-by-M array of complex numbers, where M representing number of frequency points of N-port S-parameters.

## Version History

Introduced before R2006a

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