The provided AoA Estimation example in QorvoOne is limited for 180 degree (from -90 to 90 degree). Assuming we want to measure 360 degree with the antann, do we have a deadzone at the edge of the antenna platine, where the angle goes exactly at -90 and 90?
Is there any description or explaination for this case?
Hello,
AoA works pretty well for an angle between -60 an +60 degrees. If you want to go between -90 and +90 degrees, you likely need to implement more complex algorithm than the simple LUT table. Beyond -60/+60, you get linearity, wrapping and accuracy issues, + the fact that the antenna might not be correctly adapted for this use case.
For 360 degrees, the main issue is to know if the target in on the front or on the back. Looking at the PDOA only does not provide you enough data to decide. You need to implement more clever algorithm or to add more antenna.
Hey Simon,
the algorithm issue might be there, but the first thing to make clear is whether the antenna is able to cover the edge areas, i.e., +90 degree and - 90 degree.
If not, even adding one more qm33120wdk1 on the back side 180 turned around, the problem will be still there.
Do you have maybe more informaiton about the antenna?
Hi,
JL159 antenna (single antenna) is omnidirectional so, no issue on this point. JL359 (dual antenna) is directional and we made all of our measures with a -60° to +60°. Beyond these angles, you will get linearity issues and performance reduction. For [-80°, -90°] and [+80°, +90°] I think you will get more troubles as one antenna is hiding the other one and I’m not sure you can compensate this through SW.
Hey Simon,
thank you for your answer. I assume although the omnidirectional antennas JL359 are meant to cover 360°, there should be areas that can be better covered and less covered as other areas. Are there any documentations regarding the coverage performance?
Hello,
Indeed, you need to ask your sales representative to get the Antenna Report provided under NDA.