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Wrong IQ data receive (direction finding)

Hi,

I have made an emitter (with nRF52833) and a receiver (with nRF52833 too) and i already succeed to receive data and print IQ data from an antenna array but the IQ data are wrong.

Here is the problem: I place my transmitter on the side of the antenna 1 and thanks to the IQ data i received from each antenna i trace a graphic of the phase of each antenna to verify antenna 2, 3, 4 are late (phase difference) compare to signal 1 but it's not the case:

I made several test but they are all wrong..

Please i really need help so if you have an idea i'm more than interested :)

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