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Microstrip-to-balanced stripline balun - IE3D

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ondra

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stripline balun

Hi,
I have problem with port definition. I want to simulate this balun at end-to-end connection, so I need define two unbalanced port. When I have used differential ports,
results are very good. When I have applied ground port conversion to both negative ports, results are unreasonable and configuration of ports are automatically changed.
Thanks for any suggestion.
Hi
 

ie3d stripline

Hi, ondra:

Please don't use ground port. It is an old scheme and it may not be good. Please use differential port with + and - terminals. Regards.
 

ie3d differential port

Hi jian:

Thanks you for your answer. Finally, I reached good results :)
 

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