• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 29 subscribers
  • Views 660 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AWR1642: immersion gold 、side lobe

monica
Intellectual 340 points
Part Number: AWR1642

I have two questions:

First, the AWR1642 EVM's antennas  use immersion silver  process, but it is easy to rust，I am ready to use the gold process, so I want to the effect，or is there a better solution?

Second, after the actual test of the AWR1642 board we found that there was a large side lobe in the range of about 1 m, which affected the detection of short-distance weak signals. Do you have any solutions?

Best Regards ,

Monica.Li

  • 0
    TI__Expert 4720 points

    Hi Monica, 

    Could you share some more details on the 2nd part of your question? For e.g are you testing in a clean environment? Is the large side-lobe due to the floor? Could you share a plot of the output? 

    Regards

    Anil

  • 0 in reply to Anil Mani
    Intellectual 340 points
    Hi Anil,

    The test is in a clean environment, and now I has conformed that the large side-lobe comes from the floor, so I want to solve this problem by installing the EVM at 5° elevation angle ，is this feasible? Or can you give any advise about this problem?

    Best Regards

    Monica
  • 0 in reply to monica
    TI__Expert 4720 points

    Hi Monica,

    There are  multiple ways to solve your predicament.

    1. Set a threshold that is a function of distance so that the ground clutter is ignored. You can compute the threshold by looking at the peakVal for each detected object that is actually the ground clutter and then setting the peakVal threshold to be higher than that. We use this method in the SRR TI Design () to avoid ground clutter.  

    2. Redesign the antenna array so that the vertical field of view is narrower and thereby reduce the amount of ground clutter that is seen by the radar. This is probably the best suggestion as the AWR1642BOOST EVM has an antenna design that is not optimized for any particular application. 

    3. Tilt the radar upwards (as you've suggested). This may impact the maximum detectable range of targets but should reduce clutter. 

    Regards

    Anil