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Problems with HFSS patch antenna simulation.

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Gnim

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I'm trying tu simulate a resonant structure with fres = 2.87 GHz. The solution of my simulation yields the desired frequency, though when I look at the magnetic field distribution at a coil like structure, I see that the magnitude of the field is weakest in the middle, which can not be true!
I tried to figure out what I might have done wrong but I haven't found anything.

My boundary conditions are:
perfectE @ the ground plate and the resonant structure
Radiation @ the borders of a vacuum box around my structure
Wave port @ the input

I added picures of the resonant structure, the ground plate as well as the H-field at the surface.
The green plate is my input, the copper-colored structures are copper sheets and the yellow body is an epoxy resin.
 

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  • H_Field.PNG
    H_Field.PNG
    216.9 KB · Views: 74
  • GND_plate.PNG
    GND_plate.PNG
    55 KB · Views: 68
  • ResonantStructure.PNG
    ResonantStructure.PNG
    89.4 KB · Views: 64

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