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AWR2243: Sensors forum

Part Number: AWR2243

TI engineers:
    Hello.

I have some problems about TX Phase Shifter Calibration.

I calibrate according to the manual, the calibration process is as follows:

first:

 run Cascade_Phase_Shifter_Calibration_AWRx.lua to get datasheet:

Second step, I run the  cascade_TX_Phase_Calibration.m  to get   calibrateTXPhaseResults.mat

But the graphic display is different: (a) is the result of my running  and (b) is the result of the manual.

                                      (a)

                                         (b)

third step: I run  TXBF_PS_LUT_Generate.m  and get two .csv document

But the graphic display is different: (a) is the result of my running  and (b) is the result of the manual.

                                                 (a)

                                               (b) 

the fourth step: Update the calibration matrix in  psSettingProgramCal.csv to  Cascade_Configuration_TXBF_AngleSweep.lua

the five step .  in the same enviroment ,run the  Cascade_Configuration_TXBF_AngleSweep.lua get 31 document

the six step  run the cascade_TXBF_Verification.m 

But the graphic display is different: (a) is the result of my running  and (b) is the result of the manual.

                                          (a)

                                          (b)

my question are: 

1、 Since the second step, my results have been different, and the final results are also not correct. What is the cause of this?

2、In the above process, is there any step I am incorrect or missing?

3、This is my experimental environment. Is there any problem?

...

  • Hello User,

    This document/user guide just describes an example procedure or reference for gathering the calibration dataset, calculating the phase offset calibration matrix, and applying the calibration matrix to a TX beamforming setup.

    Since each setup can have different manufacturing or process variations, it is not necessary the behavior of each of the setups will be same. The graphs provided in the concerned user guide are just for demonstration purposes and do not represent ideal behavior.

    Meanwhile, please give me some time to study your graphs and I will get back to you with my observations next week.

    Regards,

    Ishita

  • hello TI engineer:

    Thank you for your answer.

    I know  the results do not have to be exactly the same but I need to know that the difference in my results is only due to the technical problems.So for each step, I need a general standard to find out if there is a problem.Only in this way can I know which step is going to start with problems and  find a way to solve the problem