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z in of antenna in cst

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amntt

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i design a microstrip patch antenna how i can see in cst wether it is matched or not ?
 

Hi,
You can check by calculating port modes only to check the impedance. You can also check the return loss and if the value is at least below -10dB at your desired frequency, then the antenna is matched.
 
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    amntt

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s11 is return loss?
 

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