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Why is there a difference in the ADS layout and schematic simulation results?

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Dalia_Hassan

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I am working on a rectifier using Schottky diode HSMS 2852 and a matching circuit. There is a difference between the layout and schematic results for S11 (between m9 vs m10 and m11 vs m12). How can I solve this problem to get better results?

I have used TML for the input port as mentioned @volker@muehlhaus in his posts. I also used TML for the output port.

I have attached the layout and substrate screenshots. Please have a look.

Thanks very much.
 

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  • S11_layout.PNG
    S11_layout.PNG
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  • layout_1.PNG
    layout_1.PNG
    3.8 KB · Views: 48
  • layout_2.PNG
    layout_2.PNG
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  • total_layout.PNG
    total_layout.PNG
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