AWR1843BOOST: some parameters about mmWave Demo Visualizer

Hi,

I would request you to refer profile configuration provided in the mmw demo. It provides a high level of device configuration in the comment form.

C:\ti\mmwave_sdk_03_03_00_03\packages\ti\demo\xwr18xx\mmw\profiles\*.cfg

Sweep BW is the frequency bandwidth used to capture the ADC data during a single chirp/pulse.

You can calculate these values from the CLI command parameters.

chirp duration = profileCfg->rampEndTime + profileCfg->idleTime;

Total Freq BW by a chirp = profileCfg->freqSlopeConst * profileCfg->freqSlopeConst MHz

Regards,

Jitendra

Hi Jitendra,

Thanks. It really help me a lot. 

1) You mentioned that "Total Freq BW by a chirp = profileCfg->freqSlopeConst * profileCfg->freqSlopeConst MHz", is this right?  Just check it.

2) I tried some settings and I found that, if I selected "Frequency Band(GHz)" with"76-77", the "Total BW" will always equals to 1GHz no matter how I changed the other parameters.  Is this right?

3) How can I know or calculate the interval between each chirp? 

Best regards,

Hi Jitendra,

For my reply, please ignore this question : "3) How can I know or calculate....".  I know the exact answers by "profileCfg". 

Just look through questions 1) and 2). 

Thanks.

Best regards,

Hi,

1) Sorry about that typo, correct calculation: Total Freq BW by a chirp = profileCfg->freqSlopeConst * profileCfg-> rampEndTime MHz

2) Sensor has two VCOs to generate the frequency ramp, VCO1: 76-77Ghz and VCO2:77-81Ghz freq band. If you need to achieve more than 1GHz freq band then set start freq from 77GHz can go upto 81GHz.

Regards,

JG

Hi Jitendra,

For question 2), I need to use VCO1: 76-77Ghz. Maybe my description is not very clear. I mean, for example, I want "Total BW" 400MHz, or 200MHz, Can these BW be realized by setting some parameters?

Thanks.