The sample graph is attached please anyone explain how to plot the attached graph in HFSS software.
Murtadha Shukur
Plotting the effective permittivity and permeability variation with respect to frequency for an FSS unit using HFSS involves several steps:
1. Model Setup:
- Import Geometry: Import the 3D model of your FSS unit into HFSS. Ensure it's a unit cell with appropriate periodic boundaries.
- Material Assignment: Assign material properties to different parts of the FSS. Use dispersive materials for metamaterials, if applicable.
- Ports: Define input and output ports for the desired polarization (TE or TM).
2. Simulation Setup:
- Frequency Sweep: Set the frequency range of interest for the simulation. Choose a dense enough sampling for accurate results.
- Solver Settings: Select an appropriate solver type (e.g., Eigenmode Solver) and excitation type (e.g., plane wave).
- Post-Processing: Enable field monitors at desired locations to capture S-parameters (S11 and S21).
3. Extracting Permittivity and Permeability:
- S-Parameter Processing: Use Nicolson-Ross-Weir (NRW) method or other suitable techniques to extract permittivity and permeability values from the S-parameters at each frequency point.
- Data Plotting: Import the extracted permittivity and permeability data into a plotting tool like MATLAB or Python.
- Plotting Options: Plot the real and imaginary parts of permittivity and permeability separately versus frequency. You can also plot their magnitudes and phases.
4. Interpretation:
- Analyze the plots to understand how the effective permittivity and permeability vary with frequency. Identify resonant frequencies, bandgaps, and other interesting features.
- Correlate the obtained characteristics with the FSS unit's geometry and material properties.
Additional Tips:
- Use symmetry planes to reduce simulation time if applicable.
- Perform mesh refinement studies to ensure accurate results.
- Consider including loss tangent in the material properties for realistic simulations.
- Utilize HFSS post-processing tools like Field Overlap Tool or Discrete Local Fields for further analysis.
By following these steps and carefully interpreting the results, you can effectively plot and analyze the permittivity and permeability variations of your FSS unit in HFSS.
Remember, the specific details might differ based on your FSS unit's complexity and desired analysis. Feel free to ask if you have any further questions or need more specific guidance for your case.
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