using RF tool box,How to create a matrix ABCD with 4 complex vectors A, B, C and D

Question

Joao Carlos AZEVEDO GONCALVES 2017-8-29

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/354450-using-rf-tool-box-how-to-create-a-matrix-abcd-with-4-complex-vectors-a-b-c-and-d

回答： Zhao Wang 2017-9-5

file_name = 'Mixer_150_GHz_S_param_ret_P_Vb_650_mV';
ABCD_DUT_meas = abcdparameters([file_name(1,:),'.s2p']);
Y_pad_open = yparameters('open_9fF_s2.s2p');
freq = ABCD_DUT_meas.Frequencies;
Y_11 = rfparam(Y_pad_open,1,1);
Y_12 = rfparam(Y_pad_open,1,2);
Y_21 = rfparam(Y_pad_open,2,1);
Y_22 = rfparam(Y_pad_open,2,2);
A_pad_left = complex(ones(181,1));
B_pad_left = complex(zeros(181,1));
C_pad_left = Y_11+Y_12;
D_pad_left = complex(ones(181,1));

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Answer 1

Zhao Wang 2017-9-5

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/354450-using-rf-tool-box-how-to-create-a-matrix-abcd-with-4-complex-vectors-a-b-c-and-d#answer_280363

I understand that you want to create a matrix ABCD with 4 complex vectors A, B, C and D. Based on the code snippet you posted, it appears that the admittance parameters 'y_params' are available. Using the function 'y2abcd', you are able to convert the admittance parameters y_params into the ABCD-parameters abcd_params.

For information about this function, please refer to the following link:

https://www.mathworks.com/help/rf/ug/y2abcd.html