Hi,
i'm working on CC2642R and BOOSTXL-AOA. The antenna array you provided could be regarded as composed of two uniform linear arrays A1 (A1.1, A1.2, A1.3), A2 (A2.1, A2.2, A2.3). from the AOA theory, in the uniform linear array A1, the phase difference between A1.1 and A1.2 should be the same as the phase difference between A1.2 and A1.3. But by using this antenna array, I couldn't get this conclusion in my many times experiments at open place.
The specific verification method is hard to express , so I haven’t post it. I found that the phase difference between A1.1 and A1.2 is inconsistent with the phase difference between A1.2 and A1.3, but the phase difference between A1.1 and A1.3 can be equal to the sums of them (this is in accordance with AOA theory). For example, in one of my experiments, the phase difference between A1.1 and A1.2 was 30 °, the phase difference between A1.2 and A1.3 was 60°, and the phase difference between A1.1 and A1.3 was 90°.
I want to ask whether the distance between A1.1 and A1.2 is consistent with that between A1.2 and A1.3. If so, can you please help explain the reason for this situation and whether can you provide some experiment data that can support this AOA principle (the phase difference between A1.1 and A1.2 should be the same as the phase difference between A1.2 and A1.3).
best regards
frank
