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== Getting Started ==
|-
| recess_wid
| 0.00505*to_meters patch_len
| 5
|}
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Close this dialog to return to the run dialog and click the {{key|Run}} key to start the frequency sweep. After the completion of the sweep simulation, open the data manager and plot the data files "S11_Sweep.CPX" and "Z11_Sweep_CPX" in EM.Grid. Note that you can make multiple file selections for plotting using the {{key|Ctrl}} or {{key|Shift}} keys.
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<td> [[Image:Picasso L2 Fig10.png|thumb|left|480px|Setting the sweep type to "Adaptive" in the frequency sweep settings dialog.]] </td>
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<td> [[Image:Picasso_L2_conv.png|thumb|left|480px|The convergence criterion message during adaptive sweep.]] </td>
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At the end of the sweep simulation, open the data manager and plot the data files "S11_RationalFit.CPX" and "Z11_RationalFit.CPX" in EM.Grid. From the figures below you can clearly see the resonance of the antenna at 2.4GHz. However, the input impedance of the patch antenna at 2.4GHz is about (66 59 + j99j100)Ω, which is far from an acceptable impedance match.
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Close Click the {{key|OK}} button to close this dialog and return to the parametric sweep settings dialog. You will see the specifications of the sweep variable in the table on the right.
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Close Click the {{key|OK}} button to close the parametric sweep settings dialog and return to the run dialog. Click the {{key|Run}} key to start the parametric sweep. After the completion of the sweep simulation, open the data manager and plot the data file "S11_Sweep.CPX" in EM.Grid. Note that the return loss is minimized for the value recess_dep = 14mm.
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Run the new parametric sweep and then plot the data file "S11_Sweep.CPX" in EM.Grid. Note that the return loss is minimized for a value of recess_dep between 2mm and 3mm.
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Finally, run an adaptive frequency sweep of your patch antenna with the optimal recessed feed over the frequency range [2GHz, 3GHz]. After the completion of the sweep simulation, open the data manager and plot the data files "S11_RationalFit.CPX" and "Z11_RationalFit.CPX" in EM.Grid. The graphs of the S and Z parameters are shown in the figures below. A very good resonance and impedance match is accomplished at 2.4GHz.
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