22 lines
851 B
Python
22 lines
851 B
Python
import numpy as np
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import matplotlib.pyplot as plt
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#https://k6jca.blogspot.com/2019/12/vna-notes-on-12-term-error-model-and.html
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Gm1 = np.loadtxt('short.txt', dtype=np.complex128)
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Gm2 = np.loadtxt('load.txt', dtype=np.complex128)
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Gm3 = np.loadtxt('open.txt', dtype=np.complex128)
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G1 = -1
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G2 = 0.1
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G3 = +1
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e00 = (G1*G2*Gm1*Gm3 - G1*G3*Gm1*Gm2 - G1*G2*Gm2*Gm3 + G2*G3*Gm1*Gm2 + G1*G3*Gm2*Gm3 - G2*G3*Gm1*Gm3)/(G1*G2*Gm1 - G1*G2*Gm2 - G1*G3*Gm1 + G1*G3*Gm3 + G2*G3*Gm2 - G2*G3*Gm3)
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e11 = -(G1*Gm2 - G2*Gm1 - G1*Gm3 + G3*Gm1 + G2*Gm3 - G3*Gm2)/(G1*G2*Gm1 - G1*G2*Gm2 - G1*G3*Gm1 + G1*G3*Gm3 + G2*G3*Gm2 - G2*G3*Gm3)
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d_e = -(G1*Gm1*Gm2 - G1*Gm1*Gm3 - G2*Gm1*Gm2 + G2*Gm2*Gm3 + G3*Gm1*Gm3 - G3*Gm2*Gm3)/(G1*G2*Gm1 - G1*G2*Gm2 - G1*G3*Gm1 + G1*G3*Gm3 + G2*G3*Gm2 - G2*G3*Gm3)
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plt.plot(e00)
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plt.plot(e11)
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plt.plot(d_e)
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plt.show()
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