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  • TI Thinks Resolved

IWR1443BOOST: anntenna design explanation

Part Number: IWR1443BOOST

Hi,

I was wondering how you decided on the designs for IWR1443BOOST and IWR1642BOOST. I understand the advantage of 1443 over 1642 is elevation possibility, but why is this not in 1642?

Can you give me some pros and cons on this design choice please?

cheers,

J.

  • Hi,

    There is an in-depth explanation of antenna in SDK, this can be found at
    XWR1443 -...\mmwave_sdk_02_01_00_04\packages\ti\demo\xwr14xx\mmw\docs\doxygen\html\index.html
    XWR1642- ...\mmwave_sdk_02_01_00_04\packages\ti\demo\xwr16xx\mmw\docs\doxygen\html\index.html

    Regards,
    Charles O

     

  • In reply to Charles Oladimeji:

    I checked your source, i still have some questions.

    what is the advantage of several senders and several receivers. what would be the difference if i were only to enable 1 sender with 4 receivers. and what would be the difference if i were to enable one or two senders with only 1 receiver?

    cheers
  • In reply to jason Anderson:

    Hi,

    The mulitple antennas allow for Elevation and azimuth calculation. The third Tx antenna, Tx2, is positioned between the other two Tx antennas at half lambda elevation. This configuration allows for both azimuth and elevation estimation.
    see angle estimation section of the document linked below
    www.ti.com/.../spyy005.pdf

    Regards,
    Charles O

     

  • In reply to Charles Oladimeji:

    Hi,

    I understand that with one tx antenna and several rx antennas the same azimuth can be calculated. so what is the purpose of the second tx antenna?

    i understand the third tx antenna allows for elevation. but i do not completely understand the purpose of several tx antennas for azimuth.
    the azimuth is calculated based on the difference in time of receiving the chirp between rx antennas.

    thank you in advance,

    cheers
  • In reply to jason Anderson:

    Hi,

    still waiting for an answer. i dont understand the advantage of several TX antenna's. from the documentation i understand the RX antennas determine azimuth. i understand the 3rd TX is for elevation.
    but what is the advantage of 2 TX antennas?

    cheers

  • In reply to jason Anderson:

    Hi,

    One of the uses of the multiple tx is to increase the angular resolution of the sensor. The linked application note covers the topic in details
    www.ti.com/.../swra554a.pdf

    Regards,
    Charles O

     

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