s2z

Convert S-parameters to Z-parameters

Syntax

z_params = s2z(s_params,z0)

Description

z_params = s2z(s_params,z0) converts the scattering parameters to the impedance parameters.

Examples

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 S-parameters 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

s_params — N-port- S-Parameters

N-by-N M array of complex numbers

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

z0 — Reference impedance

50 (default) | positive real scalar | vector

Reference impedance of an N-port S-parameters, specified as a 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

z_params — N-port Z-parameters

N-by-N-by-M array of complex numbers

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