desgining a 28GHz patch antenna

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sandeepkiranv

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Hi, I would like to design a 28 GHz patch antenna in HFSS.....i have a doubt regarding radiation box...should i keep the general lambd/4 size radiation box? or else?.....
 

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In general, I would propose using a half wave box (or sphere or cylinder). Lambda/4 is a little problematic in my view (too small). If possible, try (and error) with half wave box. Compare the results. If there is little difference in the S - Parameters (< about 5 %) it shouldn´t matter.

I had the same discussion with my professor, he also proposed half wave when structure is small and lambda/4 when structure is big. I somewhat share that view, but due to another aspect.

Seb
 

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