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i have designed a Pifa antenna in CST but why its not working ,, Feeding problem ??

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RioPifa

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Hello guys
i have designed a Pifa that works in 900 MHz and i got this shape

pifa.jpg
View attachment PIFA.rar
i think the problem is in the Feed please if u have any information hot to improve the efficiency of the S Paramater
i need it to decrease to a minimum on 900 MHz
S para.jpg
Can anyone help me if u think i have other problems please :D

Best regards
Rio
 

bannay

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Hi Rio,

From my brief experience with PIFAs I noticed your lack of a ground plane and your short isn't coupled with one. Also if your going to use a coaxial type feed probe I suggest modelling that too with the use of a wave port. That said, I have modified your design with my suggestions (Find attached) ; although some further tweaks might be needed.
 

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sim4me

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Why not just use the free (evaluation version) of Antenna Magus to design your PIFA?
 

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