So, I'm struggling to understand what the S-parameter is in real-life terms; I mean, what does the S-parameter tell us about an antenna?
I have designed a microstrip Wi-Fi antenna that should work at around 2.4 GHz
I have simulated it and as the image below shows, the S-parameter seems correct to me with its down peaking at 2.4 GHz
My problem is, practically speaking, what shows me the S-parameter?
I know that the parameter describes how voltages or currents behave in bi or quadripole but I can't understand how to mirror this theoretical description in my specific example with an antenna working on a certain frequency