Hi Team,
Using an AWR2243 four-chip cascade, I made a radar front-end board by myself. The antenna is about 50cm.
While using it, I found that the temperature change of each chip would cause the phase and amplitude to change. In the case that the temperature changes of the four chips were different from each other (the master chip heated up more while the slave chip heated up less), the phase difference between the transmitting antennas would change, resulting in an error in the angle measurement. After checking the official self-calibration scheme based on temperature, I wonder if it is suitable for situations where the temperature of each chip varies greatly? If not, is there any requirement for the temperature difference of the four chips, or is there any other solution?
In addition, the increase in temperature would cause the gain to decrease and the noise figure of the receiver to increase. Could you please tell me how to solve it?
Kind regards,
Katherine
