ATF33143feb at different feed impedances.
(Jan 30 2013)
 The NF of the ATF33143feb amplifier is 0.180 dB and the resistive losses in the DUTs sum up to 0.1084 dB.
 The average S/N is -0.1736 dB without the DUT312. One has to add -0.0064 dB to convert -S/N to NF. When the DUT312 is inserted the S/N drops to -0.2934 dB After subtracting the resistive losses one finds S/N=-0.1850 dB which converts to 0.1914 dB for the NF with DUT312.
 The average S/N is -0.1760 dB without the DUT132. One has to add -0.0040 dB to convert -S/N to NF. When the DUT132 is inserted the S/N drops to -0.2931 dB After subtracting the resistive losses one finds S/N=-0.1847 dB which converts to 0.1887 dB for the NF with DUT132.
 The average S/N is -0.1747 dB without the DUT231. One has to add -0.0053 dB to convert -S/N to NF. When the DUT231 is inserted the S/N drops to -0.2934 dB After subtracting the resistive losses one finds S/N=-0.1850 dB which converts to 0.1903 dB for the NF with DUT231.
 The average S/N is -0.1772 dB without the DUT213. One has to add -0.0028 dB to convert -S/N to NF. When the DUT213 is inserted the S/N drops to -0.2957 dB (the two values are weighted 1:2 because the second time interval is twice as large as the first.) After subtracting the resistive losses one finds S/N=-0.1873 dB which converts to 0.1901 dB for the NF with DUT213.