Hello,
As per my understanding, you are trying to plot load loadpull contour by smith chart. To plot contours on a Smith chart, you can use the “smithplot” function available in the RF Toolbox of MATLAB. Here's an example of how you can modify your code to plot contours on a Smith chart:
% Load the data from the Excel file
T = readtable('P:\MATLABData\LoadPull_HB_2640_32dbm.xlsx');
A = table2array(T);
% Extract the required data
Gvswr = A(:, 8);
Gmag = A(:, 9);
Gphase = A(:, 10);
Greal = Gmag .* cosd(Gphase);
Gimag = Gmag .* sind(Gphase);
ACLR = A(:, 17);
EVM = A(:, 13);
PAE = A(:, 14);
POUT = A(:, 11);
GAIN = A(:, 12);
CURRENT = A(:, 25);
% Create a Smith chart
figure;
smithplot;
% Plot contours on the Smith chart
hold on;
contour(Greal, Gimag, GAIN);
colorbar; % Add colorbar to show the contour values
title('Gain Contours on Smith Chart');
xlabel('Real Part');
ylabel('Imaginary Part');
hold off;
For more information you can go through following MATLAB documentation.
Hope it helps!
