Then I created an external short-circuit on the BNC input
connector and looked at the output. I hoped to get some information
about the internal noise of the receiver. The resulting noise curve was
basically the same as the response curve when white noise from the
Agilent was applied at the antenna connector. I deduce that an internal
noise source exists in the receiver, close to the input stage.
Q2: am I wrong? Is this normal (I mean: expected)? Should/could it
be improved by means of modifications in the circuit?
Best regards
Daniele
