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s2abcd

Convert S-parameters to ABCD-parameters

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Syntax

abcd_params = s2abcd(s_params,z0)

Description

example

abcd_params= s2abcd(s_params,z0)converts the scattering parameters to the ABCD-parameters.

Examples

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Open Live Script

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 ABCD-parameters.

abcd_params = s2abcd(s_params,z0)
abcd_params =2×2 complex0.0633 + 0.0069i 1.4958 - 3.9839i 0.0022 - 0.0024i 0.0732 - 0.2664i

Input Arguments

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2N-port S-parameters, specified as a 2N-by-2N-by-Marray of complex numbers, whereMrepresents the number of frequency points of 2N-port S-Parameters.

Reference impedance of 2N-port S-parameters, specified as positive real scalar in ohms.

Note

z0must be a positive real scalar or vector. Ifz0is a vector, then the vector must be equal to the number of network parameter data points or frequency vector.

Output Arguments

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2N-port ABCD parameters, returned as a complex 2N-by-2N-by-Marray, whereMrepresents the number of frequency points of 2N-port ABCD-parameters. The output ABCD-parameters matrices have distinctA,B,C, andDsubmatrices:

[ [ A ] [ B ] [ C ] [ D ] ]

References

[1] Pozar, David M.Microwave Engineering. 3rd ed, J. Wiley, 2005.

版本历史

Introduced before R2006a

See Also