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AD9371 Phase

1) If i'm using multiply AD9371 chips, by the assumption that the traces are the same (phase matched) from the output of the AD9371 into the antenna port (including the ballun) is it possible to transmit on the same phase from all transceivers?

2) Is it possible to transmit and receive on the same frequency in order to calibrate the RX path? (FDD system). 

Regards,