AWR2944: Noise point problem of AWR2944

6283.Radar_2944 V1.0.PcbDoc.zip7701.PROC113D_BRD.zip

      Our own board has some noisy points.

      By comparing the two boards we can see that:the antenna location of our own board is in the middle of the board, while in the AWR2944 EVM, the antenna loaction is in the left of the board.

      will more noisy points be introduced for different antenna location?

Vivian Gao：

感谢您对TI产品的关注！关于你的咨询，我们正在确认你的问题，稍后回复您。

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Ken Zhang：

Hi

When you mention noise, could you pls share the result of 1D FFT and RD heatmap?

possible reasons for noise as below:

1. LC filter cannot isolate the noise from power which is usually of certain frequency.

2. The isolation between Tx/Rx, Tx/Tx Rx/Rx is not as good as TI EVM when you change the antenna but did not perform adequate antenna simulation.

3.There are also some cases where customer place AOP device in the mid of PCB and Noise is observed. If you wish to change the location, simulation is necessary.

AWR6843AOP: HW check list – Resources and FAQ (About antenna) – Sensors forum – Sensors – TI E2E support forums

Ken