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RF signals phase difference meas

Question asked by Mazz on Sep 20, 2008
Latest reply on Sep 23, 2008 by Mazz

I would like some suggestion on measurement techniques on I/Q RF CW signals.
The signals I need to characterize comes from an integrated PLL and RF divider-by-two and are typical signals that will be the LOs for an integrated mixer.
In the current test chip I have to validate there is only the PLL and RF divider-by-two (+ test buffers)
I would like to have a good accuracy in relative phase measurement (< 0.2 deg?).
An high freq oscilloscope can be used, but there are other techniques using VNAs?

I hope I've been clear enough.
Thank you in advance.