Hi, I am trying to measure the NF of a LNA MMIC die. LNA Gain: 15-20dB, NF about 1dB. Input power:-20dBm.
For this measurement using Vector Noise cal: I measure it with a Noise source as well as a Power sensor and obtained different results. Results are attached in Results.jpg
For the Noise Source Setup and Power sensor setup: Please refer NS setup.jpg and PS Setup.jpg
Q1: I am following the steps in the cal wizard, I am not sure what is meant by “Embed this section to move noise-cal reference plant to the 2 port-cal reference plane.”?
Q2: Why is there a difference?