Hello,
I am doing sweep parameters in CST for my antenna simulation. As you know, during the sweep parameters procedure, the far-filed results are not available in CST and don't save and only the last far-filed results will be available after the simulation.
I need to know how to save 2D far-filed results for each frequency during the sweep parameters with the post-processing template.
Hello,
I think the procedure is1)right click on "1D Results" in the Navigation tree
2) choose "New Tree Folder"
3)add your folder name
4)copy and paste every trial in this folder
Thanks
please use the above procedure what Smrity Dwivedi says. I also work based on the above procedure
Thank you for your comment.
But As I mentioned in the above question,
1) I need to Save far-filed results instead of 1D results.
2)During each value of the variable in the sweeping parameters, The far-filed results are not available to save them lonely. (As you can see in the above picture, I did 6 passes but the far-filed results are not available until the last step finishes and the last result is just shown)
Dear John Jin
You can do it exactly like you add the S11 parameter and the gain when you have a parametric sweep. Go to the result template and far-field result exactly when you want to observe the gain, and instead of 3D, use the angle you have for E ph =90 and H ph=0 at any frequency band you want that you already set it. You will have a polar plot for far-field results at E and H, which will overload every parametric sweep process.
Best regards
How to save Farfiled 2D diagrams during sweep parameters in CST?
Antenna optimization is two step procedure
1. Antenna is optimize as circuit to get required acceptable VSWR by varying its different physical parameter (these physical parameters is represented as equivalents circuit element).
For typical acceptable VSWR value like 1:1.5 0r 1: 2.0 we get fairly uniform (regular) radiation pattern for given excitation. For example
in case of horn antenna if we take excitation of aperture as cosine function and if we have optimize it for acceptable value of VSWR we will get regular pattern. But if optimize parameters of are not collectively contributing for acceptable value of VSWR, we may not get regular radiation pattern although we are giving its aperture excitation as cosine function via waveguide excitation. Thus there no point of observing the radiation pattern in between the VSWR optimization.
Now with respect to CST simulation during sweep parameters basically we are trying to optimize the antenna as equivalents circuit element to get a acceptable VSWR by changing antenna physical parameters. Although we may be varying ( or sweeping ) the parameter indusually but it collectively effect are shown in VSWR.
During sweep parameters basically we are trying to optimize the antenna as equivalents circuit element to get an acceptable VSWR by changing antenna physical parameters.
It has been pointed out that CST put forward radiation pattern at the end of parameter sweep. This lastly computed radiation pattern is a part of the way algorithm is written. we should not look for this radiation pattern. For sensible radiation pattern we should first study the VSWR (Return loss) plot given by CST in 1D result folder and chose
the corresponding parameters which give this acceptable VSWR value and subsequently rerun the program for the optimized value. this radiation pattern will be the use-full radiation pattern of the antenna. All intermediate pattern has no bearing.
The steps given by Abdulghafor A. Abdulhameed apper to be ok. But usefulness of results are prime important.
Dear Shrivastav a.k,
I agree with you that the radiation pattern computed in CST Microwave Studio should be the last result, and it is definitely based on the S11 or VSWR of the antenna. Nevertheless, for some types of antenna design, we need to see how the radiation pattern evolves with the change of design parameters and see how it behaves for example the reconfigurable antenna factor or beamforming applications.
Best regards
Dear, Abdulghafor A. Abdulhameed
As you have pointed about reconfigurable type of antenna.
let us take the case of reconfigurable antenna. Configurability in antenna is implemented in the form of, Frequency reconfigurability, pattern reconfigurability or polarization reconfigurability. For antenna element all fore said reconfigurable parameters are realized by implementation of veractor or pin diode in conjunction with antenna element. The foresaid reconfigurability for frequency, pattern or polarization is achieved by changing the reactance value by the use of vractor diode reactance or inclusion/exclusion of passive printed strip element with antenna antenna element( antenna conductive strip) within certain range which gives the specific parameter reconfigurability range, for an acceptable range of VSWR. Before utilizing the optimized reconfigured ( for a specific parameter) antenna and during the optimization process again we look for acceptable value of VSWR for specific reconfigured parameter and within the acceptable value of VSWR range gives the reconfigurable range for specific parameter. Thus here also during optimization we first look acceptable VSWR value not the reconfigured parameter like radiation pattern. One this process is over then only usefulness of optimized antennas ( fro specific parameter like frequency reconfiguration)radiation pattern need to be observed.
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