Different steps are introduced by many researchers to plot the simulation results of Axial Ratio vs. frequency. However, the results were completely not compatible with the fundamental and mathematical results.
Therefore, those how are know a tested steps setup of CST simulation, they can share their experiences (with photos, links, or references) of plotting and specifying an antenna polarization (linear, circular, and elliptical polarization).
thank you for help.
Dear Raed
You can plot in this way by considering following steps:
Go to template based processing->Farfield and Antenna Properties-->Farfield result-->New window opened-->go to all settings--->choose E-field from Plot mode, Axial Ratio from Axis/Polarization, Broadband from Frequency Settings, Evaluation range in single direction and choose theta and phi angle--->then OK.
Generally theta = 0 degree and Phi = 0 degree consider for axial ratio for broad frequency range.
Hope you find your answer!!!!!!!!!!!!!
Thank you Prof. Ashok
But what about (Result Value ), there are several options which one I have to select ( Min value or Max. value).
Moreover, according to antenna polarization, Are there any references described how mach the specific Axial Ratio values of (linear, circular, and elliptical polarization).
Dr. Raed, I agreed with Prof. Ashok, and add a bit step
template based processing->Far-field and Antenna Properties-->Far-field result-->(here you can get AR from gain, realized gain, H or E field) . i.e., for choosing realized gain (recommended than gain) , choose AR instead of absolute value and adjust phi=theta=0 if you predict the main max beam at that direction.
Dear prof. Dr. Abdelhady
thank you for your answer
That right, I already post in my question the contradiction what I got by many demonstrated steps setup. Regarding far field Plot mode ( gain, realized gain, H or E field), which one is better and what is the different between them.
Thank you Prof. Dr Ashok and prof. Dr. Abdelhady
But what about (Result Value ), there are several options.
Have I to select ( Min value or Max. value)? see the attached photo.
Dear Dr.Raed I agreed with Prof. Ashok and Prof. Abdelhady,
Actually, I'm working about the circular polarisation of the aperture coupled slot antenna,
see attached photo of the steps given by the respected Professors,
you have to select single direction, so in this case you haven't to select Min value or Max value.
Good luck
Best Regards
Thank you for all this answers.
Dear Dr. Mohammed your photo is descried all the simulation setup thank you for shear it.
this is for 5.8 GHz only. But my design is propagated in UWB spectrum. Its a broad bandwidth 3-10.6 GHz.
@ Dr.Raed
Sir, For my related work, I got better results comparable to the measured values, while selecting the option 'Min Value'.
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