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Different S11 values for the same frequency
Posted 22 maj 2019 05:50 GMT−4 RF & Microwave Engineering, General, Results & Visualization Version 5.4 5 Replies
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I simulate a pin-fed patch antenna at 3.5 GHz. When I set Frequency to 3.5[GHz], The S11 value is -28.474 dB. But if I enter range(3.3[GHz],0.1[GHz],3.7[GHz]) phrase into the frequencies text box. I get the following results, which is -23.569 dB at 3.5 GHz.
3.3000 -3.9214 3.4000 -8.0754 3.5000 -23.569 3.6000 -10.408 3.7000 -5.3938
Why are two S11 values different at the same frequency (3.5 GHz) even I don't change anything else?