NE334-S01 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 0.1420 dB and the dissipative loss of all DUTs are assumed to be 0.1084 dB.

The average of NONE is 0.1623 dB which means that (0.1623 - 0.1420 + 0.1084) = 0.1287 dB has to be added to levels with cable combinations to get the corresponding NF values with negative sign.

DUT       Level      NF
NONE    -0.1579    0.1420
DUT231  -0.2894    0.1607
DUT213  -0.2985    0.1698
DUT132  -0.2595    0.1308
DUT312  -0.2716    0.1429
None    -0.1667    0.1420