I have ADRV9002 + ZC706. I'd love to use this kit for radar / lidar applications. For this purpose, it needs coherence between the transmit and receive channel.
I performed the first tests using the TES application (version 0.15.0). I chose the mode: FDD / Custom / Single Cannel. I set the same operating frequencies on the transmit and receive channels. I connected the Tx1 output to the Rx2 input with a cable through an attenuator. I recorded the signal received on the Rx channel and analyzed it in Matalab. It turned out that there is a frequency difference between the transmitted and received signal, about 0.1 Hz. Very small, but in my case unacceptable.
Could the difference be due to the fact that the Tx1 output is driven by LO1 and the Rx2 input is driven by LO2?
Is it possible to force coherence operation between the transmitter and receiver in the ADRV9002?
Can this type of work be forced in TES?