Hello，
I would like to ask, when we cascade the AWR2243 chips, we use a phase shifter. When calibrating the phase shifter, we refer to the article "Cascade Coherency and Phase Sifter Calibration Application Note". We plan to use the angle inversion for phase shifting. Calibration, calling the AWR PHASE SHIFTER CAL DATA RESTORE SB interface, when we use this interface, we encountered the following problems:
1. I want to ask about the order of bite[0] and bite[1]. For example, I now have a number 258, and its binary value is 100000002. Then I should store 00000001 in byte 1 and 00000002 in byte 0. , or store 00000002 in byte 1 and store 00000001 in byte 0?
2. When using angle inversion to collect data, do the possible phase shift values (multiples of 5.625) for each antenna need to be configured in the same frame? Or do we only need to match the displacement values we need? If it is the latter, what should we do with other phase shift values that we have not used? Should the incoming phase value be written as 0? Or the corresponding phase value, such as a phase shift of 5.625°, is not used by us, so when we input the phase shift value on the interface, should we input 5.625 or 0?
3. Even if we use a certain phase shift value, such as 5.625, when we measure that the shift term is 0, the obtained angular reverse phase is 1°, and when the shift term is 5.625, the theoretically obtained angular reverse phase is 6.625°, the actual phase measured by angle inversion is 6.5°, so what should be the parameters we pass in in the interface corresponding to the phase shift value 5.625? Is it 6.5, or 6.5-1=5.5, or 6.5-6.625=-0.125?
Regards，
Gary
