ATF33143 at different feed impedances
(Jan 30 2013)



The screen dump provides the following info where the NF of the LNA itself is assumed to be 0.2525 dB and the dissipative loss of all DUTs are assumed to be 0.1084 dB.

The average of NONE is 0.2807 dB which means that (0.2807 - 0.2525 + 0.1084) = 0.1366 dB has to be added to levels with cable combinations to get the corresponding NF values with negative sign.

DUT       Level      NF
NONE    -0.2783    0.2525
DUT231  -0.4690    0.3324
DUT213  -0.4347    0.2981
DUT132  -0.3709    0.2343
DUT312  -0.3440    0.2074
None    -0.2831    0.2525