Amateur Extra › E4 Amateur Practices › E4B04
E4B04
Which S parameter represents input port return loss or reflection coefficient (equivalent to VSWR)?
Pick an answer to check it.
Answer: A. S11
S11 compares the signal reflected from port 1 to the signal sent into port 1. That is input return loss or reflection coefficient, which relates to VSWR.
Tip: S11: in at 1, back out at 1.