The image contains the Transmission Line (TRL) equation. I am trying to develop a MATLAB code that matches this equation accurately. However, I need to verify that the implementation is consistent with the mathematical expression shown in the image.
Could you please review it and help ensure that the MATLAB code correctly follows the TRL equation?

Here this matlab code

clc;
clear;
% ===== Constants =====
c = 3e8; % Speed of light (m/s)
d = 2.62e-3; % Thickness in meters (example: 2.62 mm)
% ——————- Ask user to select Excel file ——————-
[filename, pathname] = uigetfile(‘*.xlsx’, ‘Select your S-parameter Excel file’);
if isequal(filename,0)
error(‘No file selected. Exiting…’);
end
filepath = fullfile(pathname, filename);
% ===== Read data from Excel =====
% Make sure your Excel file has columns: frequency(Hz), e’, e”, u’, u”
data = readmatrix(filepath); % Reads all numeric data
f = data(:,1); % Frequency in Hz
ep_real = data(:,2); % e’
ep_imag = data(:,3); % e”
mu_real = data(:,4); % u’
mu_imag = data(:,5); % u”
% ===== Complex parameters =====
eps_r = ep_real – 1i*ep_imag;
mu_r = mu_real – 1i*mu_imag;
% ===== Input impedance calculation =====
Zin = sqrt(mu_r ./ eps_r) .* tanh(-1i .* (2*pi.*f.*d./c) .* sqrt(mu_r .* eps_r));
% ===== Reflection Loss =====
RL = 20*log10(abs((Zin – 1) ./ (Zin + 1)));
% ===== Reflection coefficient =====
Gamma = abs((Zin – 1) ./ (Zin + 1));
% ===== Absorption percentage =====
Absorption = (1 – Gamma.^2) * 100;
% ===== Display results =====
Result = table(f, RL, Absorption)
% ===== Plot RL =====
figure
plot(f/1e9, RL,’LineWidth’,2)
xlabel(‘Frequency (GHz)’)
ylabel(‘Reflection Loss (dB)’)
title(‘Reflection Loss vs Frequency’)
grid onThe image contains the Transmission Line (TRL) equation. I am trying to develop a MATLAB code that matches this equation accurately. However, I need to verify that the implementation is consistent with the mathematical expression shown in the image.
Could you please review it and help ensure that the MATLAB code correctly follows the TRL equation?

Here this matlab code

clc;
clear;
% ===== Constants =====
c = 3e8; % Speed of light (m/s)
d = 2.62e-3; % Thickness in meters (example: 2.62 mm)
% ——————- Ask user to select Excel file ——————-
[filename, pathname] = uigetfile(‘*.xlsx’, ‘Select your S-parameter Excel file’);
if isequal(filename,0)
error(‘No file selected. Exiting…’);
end
filepath = fullfile(pathname, filename);
% ===== Read data from Excel =====
% Make sure your Excel file has columns: frequency(Hz), e’, e”, u’, u”
data = readmatrix(filepath); % Reads all numeric data
f = data(:,1); % Frequency in Hz
ep_real = data(:,2); % e’
ep_imag = data(:,3); % e”
mu_real = data(:,4); % u’
mu_imag = data(:,5); % u”
% ===== Complex parameters =====
eps_r = ep_real – 1i*ep_imag;
mu_r = mu_real – 1i*mu_imag;
% ===== Input impedance calculation =====
Zin = sqrt(mu_r ./ eps_r) .* tanh(-1i .* (2*pi.*f.*d./c) .* sqrt(mu_r .* eps_r));
% ===== Reflection Loss =====
RL = 20*log10(abs((Zin – 1) ./ (Zin + 1)));
% ===== Reflection coefficient =====
Gamma = abs((Zin – 1) ./ (Zin + 1));
% ===== Absorption percentage =====
Absorption = (1 – Gamma.^2) * 100;
% ===== Display results =====
Result = table(f, RL, Absorption)
% ===== Plot RL =====
figure
plot(f/1e9, RL,’LineWidth’,2)
xlabel(‘Frequency (GHz)’)
ylabel(‘Reflection Loss (dB)’)
title(‘Reflection Loss vs Frequency’)
grid on The image contains the Transmission Line (TRL) equation. I am trying to develop a MATLAB code that matches this equation accurately. However, I need to verify that the implementation is consistent with the mathematical expression shown in the image.
Could you please review it and help ensure that the MATLAB code correctly follows the TRL equation?

Here this matlab code

clc;
clear;
% ===== Constants =====
c = 3e8; % Speed of light (m/s)
d = 2.62e-3; % Thickness in meters (example: 2.62 mm)
% ——————- Ask user to select Excel file ——————-
[filename, pathname] = uigetfile(‘*.xlsx’, ‘Select your S-parameter Excel file’);
if isequal(filename,0)
error(‘No file selected. Exiting…’);
end
filepath = fullfile(pathname, filename);
% ===== Read data from Excel =====
% Make sure your Excel file has columns: frequency(Hz), e’, e”, u’, u”
data = readmatrix(filepath); % Reads all numeric data
f = data(:,1); % Frequency in Hz
ep_real = data(:,2); % e’
ep_imag = data(:,3); % e”
mu_real = data(:,4); % u’
mu_imag = data(:,5); % u”
% ===== Complex parameters =====
eps_r = ep_real – 1i*ep_imag;
mu_r = mu_real – 1i*mu_imag;
% ===== Input impedance calculation =====
Zin = sqrt(mu_r ./ eps_r) .* tanh(-1i .* (2*pi.*f.*d./c) .* sqrt(mu_r .* eps_r));
% ===== Reflection Loss =====
RL = 20*log10(abs((Zin – 1) ./ (Zin + 1)));
% ===== Reflection coefficient =====
Gamma = abs((Zin – 1) ./ (Zin + 1));
% ===== Absorption percentage =====
Absorption = (1 – Gamma.^2) * 100;
% ===== Display results =====
Result = table(f, RL, Absorption)
% ===== Plot RL =====
figure
plot(f/1e9, RL,’LineWidth’,2)
xlabel(‘Frequency (GHz)’)
ylabel(‘Reflection Loss (dB)’)
title(‘Reflection Loss vs Frequency’)
grid on transmission line theory trl equation matlab ma MATLAB Answers — New Questions

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