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Inverted F antenna(S parameters in HFSS)

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srijan.rio

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Hi all,

I intend to design a folded uniplanar inverted f antenna. I have done the design for 860 MHz but my results aren't coming correctly.(S11 photo attached). I have attached the hfss file too. It would be really helpful if someone could kindly look into it.

- - - Updated - - -

[Update]
Ok so from what I gather, this may be happening because of impedance mismatch of the feed line maybe. Is it so or is there something else wrong with the design ?
 

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  • fuifa865mhz.rar
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  • s parameters.png
    s parameters.png
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