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Hi
Do you have the reference for this design such as an article, or textbook?
It seems not a regular circular patch since you are introducing shorting vias around antenna!
Dear kela3kela
To make these bends in CST, you can make a small triangle and then subtract it from the whole structure.
For spacing between elements at 60GHz, it can be more than Lambda/2 because the value of Lambda is too small at high frequencies.
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