Part Number:AWR1642
Hi,
SW: mmWave SDK 2.0.0.4
HW: AWR1642 ES2.0 customer board
We use mmWave demo in mmWave SDK 2.0.0.4 to test run-time periodical calibration and observe the Tx power variances across different temperatures.
The result is like:
| AWR1642 temperature | Start Freq.(GHz) | Start(dBm) | Stop Freq.(GHz) | Stop(dBm) |
| -8℃ | 76.118 | -24.21 | 76.3 | -23.85 |
| 0℃ | 76.116 | -24.34 | 76.304 | -23.64 |
| 13℃ | 76.116 | -24.41 | 76.3 | -23.29 |
| 54℃ | 76.108 | -25.45 | 76.221 | -25.97 |
| 70℃ | 76.1082 | -28.72 | 76.2203 | -28.63 |
| 75℃ | 76.1079 | -28.51 | 76.2206 | -28.53 |
| 80℃ | 76.107 | -28.04 | 76.22 | -29.06 |
| 85℃ | 76.1085 | -29.19 | 76.2197 | -29.1 |
| 90℃ | 76.108 | -28.88 | 76.22 | -29.32 |
| 115℃ | 76.109 | -29.41 | 76.221 | -30.64 |
As you can see, the Tx power variance across temperature is pretty large (5~6 dBm) and the result is very different from "self-calibration" application note.
We're pretty sure the run-time periodical calibration in mmw demo is working since we can get the calibration report periodically.
Do we miss anything?