Example Of Conversion Loss Versus Output Frequency With Correct If Signal - Agilent Technologies 8719D User Manual

Harmonics, linearity, and spurious signals also introduce errors that are not removed by
frequency response calibration. These errors are smaller with a narrowband detection scheme,
but they may still interfere with your measurements. You should filter the IF signal to reduce
these errors as much as possible.
Correct filtering between the mixer's IF port and the receiver's input port can eliminate
unwanted mixing and leakage signals from entering the analyzer's receiver. Figure 6-88 shows
a plot of mixer conversion loss when proper IF illtering was neglected.
Example of Conversion Loss versus Output Frequency Without Correct
mixer's IF port.
Example of Conversion Loss versus Output Frequency With Correct IF
IF Signal Fath Filtering
Figure 6-89.
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Application and Operation Concepts 6-163