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Dual polarized coaxial to circularwaveguide-simulation issues

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goroks

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Hello

I am designing a dual polarized coaxial to circular with an inner ring and a outer ring supposed to work at two different frequencies.

the ports are combined two by two (+;-) and there might by a phase sift.

I dont know how to run the simulation nor the port combining thing.

Please Help!

dual.PNG
 

This is the structure made with CST Studio.

D21.pngD21.png
D22.png

The inner ring excites the TE11 mode and the outer ring the TE21 mode; there is also something about a phase shift and all the ports not running at the same time.

Your hel would be really appreciated.

best,
 

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