i new to using network analyzer and
doing microwave/RF measurements. i am using Agilent
8364B network analyzer. i did full 2-port caliberation
for power sweep and got s21 vs. Pin curve. now,
i wanted to get Pout vs. Pin curve but the one i
got didn't correspond to s21 data.
an unratioed trace on receiver B (in side the VNA
port 2) to see the absolute output power on receiver
B but instead of showing a curve that is Pin+s21=Pout
it shows me in fact a loss of 10 dB, which doesn't
make sense. i did the full two-port caliberation
so i think caliberation shouldn't be the issue.
do i need to do a receiver caliberation for B. is
that required, though? would i see this bad a Pout
curve if I don't do receiver calibeartion? any help
or feedback will be nice. thanks