The setup for the measurement are all the same -- the noise source was connected to the "Interferometer A" waveguide transition module and then output signal went through a Mini-Circuits Bias-Tee. The noise figure meter was set to make an offset measurement using the lower sideband using measurement mode 1.4 with the external LO runs at 5.15 MHz and arithematic smoothing of 16. The input losses were set to 0.1 dB (based on the network analyzer measurements of the matched set of Interferometer waveguide transitions), the external temperature was set to 290K, and the output loss was set to 30 dB (since there was a 30 dB attenuator on the output to keep the gain of the DUT, device under test, below 40 dB).
Gain | Noise Temperature |
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Brendan Fox & Travis Nelson & Liem Nguyen