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Help me design a balance PIFA antenna in HFSS

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zain_malik

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Hi,
Kindly help me. I m designing a Balance PIFA antenna in HFSS for GSM and UMTS (1900,2100).

gain.jpgReturn-Loss.jpgCurrent frm Patch.jpgQ1
How to feed a Balance PIFA antenna ?
Q2
No current flows from my Patch,But gives a good Bandwidth and gain. Why no current flows ?
Q3
How to match the PIFA antenna impedance without changing the position of feed?

I m v.thankful. Hope for prompt replay
 

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