HMC8191 Spurious. Were the down-converter spurious measured with a 90-degree hybrid or are they the individual IF outputs?
These were measured with a hybrid but the hybrid loss has been calibrated out. Usually we try to measure without a hybrid at an individual IF output as using a hybrid can sometimes make the spurious products look better as the hybrid is bandlimited.
If you have a specific RF and LO frequency, I can measure the spurious products at an individual IF output (i.e no hybrid). This measurement will take 1 week.