mixmaestromark
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Hi
I would like to determine the NF of an amplifier when in compression. I have an input signal of 11.87dBm, with a phase noise floor of -163dBc/Hz. The output of the amplifier is 17.9dBm with a phase noise floor of -162.5dBc/Hz.
Using the equation NF=10Log(SNRin/SNRout) (same as Phase noise IN [dBc] - Phase noise OUT [dBc]) I get NF=0.46.
This cannot be correct though as the specified NF of the amplifier is 4 when operating linearly.
Thanks
I would like to determine the NF of an amplifier when in compression. I have an input signal of 11.87dBm, with a phase noise floor of -163dBc/Hz. The output of the amplifier is 17.9dBm with a phase noise floor of -162.5dBc/Hz.
Using the equation NF=10Log(SNRin/SNRout) (same as Phase noise IN [dBc] - Phase noise OUT [dBc]) I get NF=0.46.
This cannot be correct though as the specified NF of the amplifier is 4 when operating linearly.
Thanks