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what is S11 in patch antenna?

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ubaid_666

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hi
can any one tell me what is s11 parameter of patch antenna
and what is s11?
how can i find s11?
plz answer me as soon as possible
 

S11 is the input reflection factor: how much of the input signal is actually reflected back to the transmitter.

You can convert S11 to the VSWR, which is another parameter to describe antenna matching:
**broken link removed**
 

volker_muehlhaus said:
S11 is the input reflection factor: how much of the input signal is actually reflected back to the transmitter.

You can convert S11 to the VSWR, which is another parameter to describe antenna matching:
**broken link removed**


.... and about VSWR you can read here: **broken link removed** or https://en.wikipedia.org/wiki/Standing_wave_ratio


it is about Return loss: https://en.wikipedia.org/wiki/Return_loss

in this case you: s11 = RL, it is the same.

If you know exactly, what is the s11, try search "Scattering Matrix" or "S-PARAMETERS", for example: **broken link removed**

I hope, that I helped you
 

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