AWR1642BOOST: About the angle limitation,beamforming,Tx power.

Hello Frank,
Please find my reply below:

>>1.
>>How to edit the limitation about the angle measurement in TI default setting? (now is 120 degrees)
Could you clarify what you mean by "TI default settings" ? Are you referring to demo visualizer plot while using the OOB demo.

>>2.
>>The antenna pattern is inapplicable for the BSD application (the gain of side lobe is too low),I want to improve the ability about object detect
>>on the side way of RADAR. Can you suggest me how to edit the TI code to achieve this requirement ? Is there any SDK for this application?(ex
>>beamforming,phase array...)

AWR1642 does not support beam forming. The antenna pattern cannot be changed by code. You will have to design an antenna which meets your specific requirements. The antenna on the EVM is just one example.

>>3.
>>I want to increase the TX power ,Is the gain of PA tuneable?
>>Please help to solve these question A.S.A.P
By default the TX power is set to max. The TX power is tuneable, you can reduce it by changing the TX backoff setting in the profile config API. Each code corresponds to 1dB reduction.

Regards,
Vivek

Hi Frank,

Apologies for the delay.

Another question,

1.

What's the trade off in performance(Rmax?Vmax?Resolution?) between "srr_config_chirp_design_SRR80.h"  & "srr_config_chirp_design_SRR120.h".

[Anil] There is no difference in Vmax between the two schemes. However, the maximum range (or Rmax) for the 120m chirp configuration is 120m. The range-resolution for the 120m is ~ 3/2 of the 80m chirp configuration (i.e 54 cm).

2.

I already surveyed the code between "srr_config_chirp_design_SRR80.h"  & "srr_config_chirp_design_SRR120.h" there's some part of code makes me confuse.(show as the figure)

"srr_config_chirp_design_SRR120.h"  use the 2 Tx for SRR function, can you tell me what's the action between these 2 antenna? (TD?Diversity?)

[Anil] The macro enables both transmitters simulataneously for each chirp in the SRR configuration to increase the maximum range by ~40 %. Note that yhis mode is neither TDM nor diversity, but 'beamforming' in the boresight direction. The AWR1642 doesn't have phase-shifters and cannot beam-form in an arbitrary direction. However if two transmitters are length matched and used simultaneously, then they beamform @ 0 degree azimuth (a.k.a boresight).

 

Regards

Anil

Hi,

When TX1, TX2 transmit at the same time and they are both configured for 0 deg Phase, You will see higher energy in bore sight but your Field of view would reduce.

Regards,
Kaushal