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Please help! CST slotted bow tie patch antenna efficiency problems

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stellarlyjeska

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Im a beginner in desperate need for help. I am designing a slotted bow tie patch antenna with a back coaxial feed which I have already created in CST. When a transient simulation is run, I get a practically non existant efficiency. When looking at the surface current, it appears that very little current is flowing on the patch surface. Where am I going wrong?

It would be greatly appreciated if you could look at my design and give me some advice and help.

many thanks.

**broken link removed**
 

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