Increasing the height of the substrate - bad matching

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Salving

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Can anyone explain me why increasing the height of the substrate leads to a worse matching in microstrip antenna after reaching some point of height og the substrate?
 
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Salving said:
Can anyone explain me why increasing the height of the substrate leads to a worse matching in microstrip antenna after reaching some point of height og the substrate?
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No. :shock:

:idea:
There's more to the problem than what you have described. For example, if you change the substrate height without re-designing the antenna, you have detuned it. And also, even if you tune the patch back, it will almost certainly have a different 'tapping point'.

:idea:
For a good answer, you should supply a more detailed question, i think...
 

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