# abcd2y

Convert ABCD-parameters to Y-parameters

## Description

example

y_params = abcd2y(abcd_params) converts the ABCD-parameters to the admittance parameters.

## Examples

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Define a matrix of ABCD parameters.

A =      0.999884396265344 +  0.000129274757618717i;
B =      0.314079483671772 +      2.51935878310427i;
C = -6.56176712108866e-007 + 6.67455405306704e-006i;
D =      0.999806365547959 +  0.000247230611054075i;
abcd_params = [A,B; C,D];

Convert ABCD-parameters to Y-parameters.

y_params = abcd2y(abcd_params)
y_params = 2×2 complex

0.0488 - 0.3908i  -0.0489 + 0.3907i
-0.0487 + 0.3909i   0.0488 - 0.3908i

## Input Arguments

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2N-port- ABCD-Parameters, specified as a 2N-by-2N-by-M array of complex numbers, where M represents the number of frequency points of 2N-port ABCD-parameters.

The function assumes that the ABCD-parameter matrices have distinct A, B, C, and D submatrices:

$\left[\begin{array}{cc}\left[A\right]& \left[B\right]\\ \left[C\right]& \left[D\right]\end{array}\right]$

## Output Arguments

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2N-port Y-Parameters, returned as a 2N-by-2N-by-M array of complex numbers, where M represents the number of frequency points of 2 N-port Y-parameters.

## Version History

Introduced before R2006a