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Port extension test

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This commit is contained in:
Jan Käberich 2022-10-01 20:09:46 +02:00
parent 96f8b6c90a
commit b20e5598be
12 changed files with 500 additions and 56 deletions
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21
Software/PC_Application/LibreVNA-GUI/Util/util.cpp
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@ -167,3 +167,24 @@ std::complex<double> Util::findCenterOfCircle(const std::vector<std::complex<dou
return std::complex<double>(Xcenter + meanX, Ycenter + meanY);
}
std::complex<double> Util::addTransmissionLine(std::complex<double> termination_reflection, double offset_impedance, double offset_delay, double offset_loss, double frequency)
{
// nomenclature and formulas from https://loco.lab.asu.edu/loco-memos/edges_reports/report_20130807.pdf
auto Gamma_T = termination_reflection;
auto f = frequency;
auto w = 2.0 * M_PI * frequency;
auto f_sqrt = sqrt(f / 1e9);
auto Z_c = std::complex<double>(offset_impedance + (offset_loss / (2*w)) * f_sqrt, -(offset_loss / (2*w)) * f_sqrt);
auto gamma_l = std::complex<double>(offset_loss*offset_delay/(2*offset_impedance)*f_sqrt, w*offset_delay+offset_loss*offset_delay/(2*offset_impedance)*f_sqrt);
auto Z_r = std::complex<double>(50.0);
auto Gamma_1 = (Z_c - Z_r) / (Z_c + Z_r);
auto Gamma_i = (Gamma_1*(1.0-exp(-2.0*gamma_l)-Gamma_1*Gamma_T)+exp(-2.0*gamma_l)*Gamma_T)
/ (1.0-Gamma_1*(exp(-2.0*gamma_l)*Gamma_1+Gamma_T*(1.0-exp(-2.0*gamma_l))));
return Gamma_i;
}