IWR6843: Difference between IWR6843ISK-ODS and IWR6843AOPEVM

Koji Hayashi92

Mastermind 7030 points

Part Number: IWR6843

Hi TI-team

My customer wants to detect the movement of people in the room with millimeter waves.

It is supposed to be installed near the ceiling on the wall.

They are thinking of buying EVM.

Should they use IWR6843ISK-ODS or IWR6843AOPEVM ?

Looking at the URL below, either one looks good.

http://dev.ti.com/tirex/explore/node?node=AITDkxgrRIdA.6m43Ts-sg__VLyFKFf__LATEST

FOV (azimuth, elevation) of ODS is 120° and FOV of AOP is 130°, so should I choose AOP ?

Please tell me if there are any other differences.

Best Regards,

Koji Hayashi

over 5 years ago

0 Former Member over 5 years ago

Hello Koji,

If the small form factor of AOP is not required, I would recommend the ODS antenna. Both are very similar - they have the same FOV and angular resolution.

https://dev.ti.com/tirex/explore/node?node=AKu-aTm5FIcxlwZJU1pLBw__VLyFKFf__LATEST

There are some performance advantages of a larger EVM and PCB based antenna such as ODS such as less restriction on duty cycle for thermal dissipation and less better isolation of the antennas.

If your customer is doing side mounting (instead of overhead ceiling mount) - the ISK with a down tilt may give better performance.

If they are mounted on the wall and near the ceiling, using a wide FOV antenna like ODS or AOP then a lot of the radiation pattern will cover the ceiling.

I would ask them to consider their mounting position and desired maximum range then choose between ISK and ODS. ISK will give better range/SNR performance but it is not good if the sensor is mounted on the ceiling looking down.

Amanda

0 Koji Hayashi92 over 4 years ago in reply to Former Member

Mastermind 7030 points

Hi Amanda-san

Thank you for response.

I responded to our customers and asked them to make a selection.

Best Regards,

Koji Hayashi

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IWR6843: Difference between IWR6843ISK-ODS and IWR6843AOPEVM