I saw "AD8302 360 degree phase measurement" disscussion.
Are there tricks and traps when we measure the phase error?
I expect a few degree error feature for AD8302.
A large input, ex -10dBm, might degrade phase error feature?
Unbalanced level inputs does not influence.
A 90 degrees phase shifter of #3286 will degrade the phase error even fixed frequency ?
It usually measure by vector network analyzer, I think.
AD8302 datasheet TPC26 is measured by such VNA?
Using the passive phase shifter is possible to measure a few degree error?