IWR1843: beam forming in elevation plus azimuth with 3 antennas

Bart

Part Number: IWR1843
Other Parts Discussed in Thread: IWR6843

Hello,

We would like to use beam steering function in IWR6843 and IWR1843. Is there any documentation or example how to do it?

In case of IWR1843, is it also possible to steer a beam in elevation (or azimuth and elevation at the same time) using all three antennas?

Meanwhile we are checking the below topics:

https://e2e.ti.com/support/sensors/f/1023/p/835539/3099743

https://e2e.ti.com/support/sensors/f/1023/t/759142

https://e2e.ti.com/support/sensors/f/1023/p/754882/2789829

Thank you.

over 5 years ago

0 Nitin Sakhuja over 5 years ago

TI__Mastermind 30405 points

Hi Bart,

The concepts of beam-steering is explained in the app note mentioned in the following post:

https://e2e.ti.com/support/sensors/f/1023/p/835539/3090138#3090138

We don't have a beam-steering example for IWR1843/IWR6843 at this time. Please allow me a couple of days to get back to you on the question related to beam-forming with 3TX.

Regards

-Nitin

0 Nitin Sakhuja over 5 years ago in reply to Nitin Sakhuja

TI__Mastermind 30405 points

Hi Bart,

IWR6843ES2.0 supports simultaneous transmission with 3TX but only with only with 1-V LDO bypass and PA LDO disable mode. In this mode, the 1-V supply needs to be fed on the VOUT PA pin. Please check the table note in section 2.3.1 of the following Migration Guide

http://www.ti.com/lit/an/swra656a/swra656a.pdf

Thanks

-Nitin

0 Bart over 5 years ago in reply to Nitin Sakhuja

TI__Expert 6460 points

Thanks Nitin,

that sounds great. So I guess, the table 3.1 in the datasheet will be updated to reflect this (currently only IWR1843 is marked to have support for 3Tx simultaneous operation)?

0 Nitin Sakhuja over 5 years ago in reply to Bart

TI__Mastermind 30405 points

Yes, we will update the datasheet accordingly.

Thanks

-Nitin

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IWR1843: beam forming in elevation plus azimuth with 3 antennas