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At the end of the sweep simulation, graph three data files: “S11_RationalFit.CPX”, “Z11_RationalFit.CPX” and “VSWR_RationalFit.DAT” in EM.Grid. You will see that around 1.65GHz, the magnitude of S<sub>11</sub> (return loss) dips into a deep minimum representing a very good impedance match. Also note that the slot antenna features a 10-dB return loss bandwidth of more than 330MHz.
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