Timeline for Interpretation of scattering parameter
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 21, 2019 at 10:35 | vote | accept | Jacccy | ||
| Nov 20, 2019 at 15:20 | comment | added | analogsystemsrf | -23 dB is:[ -20dB -3dB], which is 1/100 the power * 1/2 the power, or 1/200 the power. The voltage ratio is the sqrt of the power ratio, or sqrt(2000. | |
| Nov 20, 2019 at 15:14 | answer | added | Captainj2001 | timeline score: 4 | |
| Nov 20, 2019 at 14:12 | comment | added | Captainj2001 | Can you tell us what the device you are testing is? | |
| Nov 20, 2019 at 13:57 | comment | added | Neil_UK | How are you measuring S21 if your second port is terminated in a matched load? Sketch your setup. S parameters can also be low due to attenuation, not just standing waves. Show the trace obtained, engineers can often figure out what's going on from what the trace does as the frequency varies. Most of your if this, then that, seems quite garbled, I don't think you have the fundamentals of S parameter measurement properly understood yet, but attempting to correct you would be fruitless at the moment without a diagram of what you're doing. | |
| Nov 20, 2019 at 9:46 | history | asked | Jacccy | CC BY-SA 4.0 |