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please teach me how to see axial ratio using CST

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Hi.. can somebody tell me how to see axial ratio from CST?im designng circular polarization antenna.before im just determine the polarization from the surface current and see either the arrow is rotate in 360 deg.im just want to know where to click at the CST to see the axial ratio to conform my design.im using CST 2010.plez plez plez?..

Hi kristal,

to see the axial ratio in CST, you should look at "Farfields" section in the simulated results... there should be a drop down list after simulating the design.

if you click on that drop down list you should be able to see the axial ratio plot...

The default plot is in 3D format, if you want to plot it on polar form, you need to right click on a farfield result and select "Far field plot properties", In the "General" tab select "polar" for the "plot type" and choose the values for "Theta" & "Phi" according to the orientation of your design. Then select "apply" to see the results

regards,
per_lube

hi per_lube,
thanks for your help. but after we get the axial ration graph, how to check whether our antenna is circular or linear polarized?

to know either it is linear @circular polarization, u need to see at the axial ratio graph at your resonant frequency.if the reading is below 3dB it is circular polarztion.if 3dB and above it in linear polarization

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