Hi All,
I am trying to use this simple 2 port model to help me understand things but have found some odd results from it.
If I set the following parameters in BLKBOX2
S21 = dbpolar(-1.1,0)
S12 = dbpolar(-1.1,0)
S11 = X
S22 = X
ZRef = 50 ohm
then if I sweep X from 0 to 1 and then plot the NF for this the NF drops from 1.1dB gradually to zero when X = 0.473
if I make S22 = 0 but only sweep S11 from 0 to 1 then the NF stays flat at 1.1dB and then drops 'digitally' to 0 when X= 0.473.
This is not making sense to me. Please help
kind regards
marino
I am trying to use this simple 2 port model to help me understand things but have found some odd results from it.
If I set the following parameters in BLKBOX2
S21 = dbpolar(-1.1,0)
S12 = dbpolar(-1.1,0)
S11 = X
S22 = X
ZRef = 50 ohm
then if I sweep X from 0 to 1 and then plot the NF for this the NF drops from 1.1dB gradually to zero when X = 0.473
if I make S22 = 0 but only sweep S11 from 0 to 1 then the NF stays flat at 1.1dB and then drops 'digitally' to 0 when X= 0.473.
This is not making sense to me. Please help
kind regards
marino