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IWR1443: IWR1443 beamwidth

Kz777
Expert 7895 points
Part Number: IWR1443

Hi Champs,

Could you please tell us mmwave "beamwidth" ?

We would like to know how much  dB  expose to object.

Could you pleas  tell us this "range" of DB? 

Regards,

Kz777

  • 0
    TI__Guru 50240 points
    Hi Kz777,

    We do not yet have an immediate answer but I will consult an RF expert and get back to you by Thursday.


    Cheers,
    Akash
  • 0 in reply to Akash Gondalia
    TI__Mastermind 37500 points

    Hello,

    The beamwidth is normally defined as the antenna directivity from boresight, with a drop in 3db of amplitude.

    See radartutorial.eu.

     

    Related to the IWR1443 EVM, the Radar antenna directivity gain, depends on how the Tx and Rx antenna are used.

    In the Tx we can use 1 Tx, Tx MIMO (usually 1, and 3), or with a different antenna beamforming for electronic steering or higher EIRP power.   The Rx are usually combined to create better azimuth resolution.  There is a representative patch antenna pattern shown in the 1443BOOST EVM User Guide, swru518.

     

    Antenna

    E (Elevation) Beamwidth

    E (Elevation) Directivity

    H (Azimuth) Beamwidth

    H (Azimuth) Directivity

    Tx1{az MIMO}

    31.6 degrees

    9.5dbi

    68 degrees

    9.3dbi

    Tx2{el MIMO}

    29.2

    9.9

    62.2

    9.8

    Tx3{az MIMO}

    26.6

    10.1

    58.6

    10.2

    Rx1

    28.8

    10.3

    65.2

    10.7

    Rx2

    29.5

    9.9

    84.5

    10.1

    Rx3

    29.2

    9.7

    90.4

    9.7

    Rx4

    31.3

    9.8

    69.9

    10.8

     

    Regards,

    Joe Quintal

  • 0 in reply to Radio-Joe
    TI__Expert 7895 points
    Hi Joe,
    Thanks.