s2y

Convert S-parameters to Y-parameters

Syntax

y_params = s2y(s_params,z0)

Description

y_params = s2y(s_params,z0) converts the scattering parameters to the admittance parameters.

Examples

Convert S-Parameters to Y-Parameters

Define the S-parameters and impedance.

s_11 = 0.61*exp(1i*165/180*pi);
s_21 = 3.72*exp(1i*59/180*pi);
s_12 = 0.05*exp(1i*42/180*pi);
s_22 = 0.45*exp(1i*(-48/180)*pi);
s_params = [s_11 s_12; s_21 s_22];
z0 = 50;

Convert the S-parameters to Y-parameters.

y_params = s2y(s_params,z0)

y_params = 2×2 complex

   0.0647 - 0.0059i  -0.0019 - 0.0025i
  -0.0826 - 0.2200i   0.0037 + 0.0145i

Input Arguments

s_params — N-port- S-Parameters

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

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

z0 — Reference impedance

50 (default) | positive real scalar

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

Note

z0 must 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 or frequency vector.

Output Arguments

y_params — N-port Y-Parameters

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

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

References

[1] Reveyrand, T. “Multiport Conversions between S, Z, Y, h, ABCD, and T Parameters.” 2018 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC), IEEE, 2018, pp. 1–3. DOI.org (Crossref), doi:10.1109/INMMIC.2018.8430023.