1. General Network Analyzer
Doug Rytting

2. Agenda General Block Diagram Mixer Characterization
Large Signal Characterization

3. General Block Diagram

4. Large Signal Characterization

5. Mixer Characterization
Int Source
Int LO
Meas
S11 RF
b0/a0
S21 IF
b3/aR
S12
b0/aR
S22
b3/a3
This block diagram describes a system for complete characterization of the forward and reverse paths of a test-mixer. All four s-parameters of the test-mixer can be measured with no assumptions.
Calibration can be done using the characterized calibration mixer described earlier. Or this block diagram can support the unknown thru calibration technique using a reciprocal mixer as the unknown thru calibration element.
However there can be remaining errors due to the image and various higher order mixing products. These errors may vary as the RF, IF and LO port matches reflect these higher order products back into the mixer and remix to the primary operating frequencies.