A simulation file validation issue.

[youxch]

hair-an
A set of data was randomly selected and subjected to full wave simulation. But the expected results of the model were not obtained, and I don't know where the problem lies. Here's my object built by CST2022. I appreciate it if you could take your time to review the simulation file and see if you can identify the problem.
The data I choose is from file"Output_Max.txt",line 2.
7.000 71.000 40.000 -6.500 8.000 9.000 2.400 3.415 1015.000 9.002
By calculation, the actual value should be
l= 71.0 w= 40.0 wu1= 2.0 wu2= 32.0 wu4= 6.0 lu1= 3.87 wu3= 2.4 lu2= 5.81 wf= -6.5 h= 7
fL=2400MHz, fH=3415MHz Gain=9.002dBi
You can get my file by clicking this URL
https://github.com/hair-an/CST-repetition-file-of-Inverse-design-of-patch-antennas

[youxch]

Thank you for your feedback. I have conducted a simulation validation using the parameters you provided, and the actual values indeed match your calculations. Below are the model structure, reflection coefficient, and realized gain at 2.45 GHz, which show very little difference from the predicted values. Please review them.

[hair-an]

Thank you for your reply, It was my carelessness that caused errors in the simulation. After correctly placing the feeding position, although there were still some differences, a result similar to yours appeared, perhaps it may due to the size of the ground? Anyway it proves that the DLmodel is correct and your work is Inspired.