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Fabricated Patch antenna not resonating at simulated frequency

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anoop0988

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Hi,

I simulated a patch antenna with coaxial feed to resonate at 2.8 GHz with a return loss of -20 dB and no resonance elsewhere.
Please find attached my model.

I fabricated this antenna and tested it. The fabricated antenna has return loss of only -3.6 dB at 2.8 GHz whereas it is resonating at 5.8 GHz with a return loss of -20 dB.

Please let me know if I have done anything wrong in my simulation and design.

Thanks in advance.
 

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  • patchcoaxtut276 - Copy.rar
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