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dual coax-feed for patch antenna in HFSS v9.2/v.10

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cbear

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Hi Everybody,

I am new to this forum. Could somebody kindly answer my question regarding dual coax-feed in HFSS v9.2 or v10?

I am simulating a patch antenna using HFSS above version, and I try to use a dual coax feed to get circular polarization. So the two coax feeds need to be orthonogal (90 degrees difference in phase), but I couldn't find setting for that when adding a lump port to the coax feed.

Does anybody know how to implement this in HFSS 9.2? Do I need to build a 90 hybrid or some circuit to realize this phase shift, if so. How can I put them together with the antenna in HFSS?

Thanks a lot!
 

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