Hello
I have a customer who is looking to evaluate the IWR1443 with the booster pack.
Ideally they would like to have a small angle of operation and the smallest Azimuth Resolution setting on the mmWave Demo Visualiser is 15 deg.
Is there anything they could use to reduce this to around 12 deg ?
What does the Azimuth Resolution setting actually do as I would have thought this was related to antenna design, lens used, etc..
Many Thanks
Bob Bacon
Hi Bob,
Did the application note that Vivek posted address your problem?
I believe the equation (8) is exactly what you needed. This shows how angular resolution is a function of wavelength, distance between antenna, number of RX antenna, number of TX antenna and the angular displacement of the target itself.
As far as the demo visualizer, the azimuth resolution drop-down menu simply selects the number of transmitters and receivers currently active on the EVM. As shown by equation (8), as you increase the number of TX and RX antenna that are used for the angular estimation, the angular resolution gets smaller. Also, as you increase the distance and as the target comes closer to bore-sight to the sensor (0 degree azimuth in your case).
The demo visualizer sets up the following options:
| Azimuth Resolution | Number of RX Antenna | Number of TX Antenna |
| 15 | 4 | 2 |
| 30 | 4 | 1 |
| 60 (2 RX) | 2 | 1 |
| 60 (1 RX) | 1 | 1 |
In the case of the EVM, the resolution is limited to the number of TX and RX antenna and their spacing. The 9.5 degree minimum that Vivek quoted can be derived as follows:
Please let us know if this solves your problem.
Thank you,
Randy
