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IWR1443: the angle of Radiation Pattern in Elevation is smaller than IWR1443BOOST EVM

sir li
Intellectual 340 points
Part Number: IWR1443

Dear Mr. or Mrs,

Thanks for your supports,

We have made a board, the layout of the antenna is same to the IWR1443BOOST EVM.

After tesed, the the angle of Radiation Pattern in Elevation is smaller than IWR1443BOOST EVM;  and  the the angle of Radiation Pattern in Azimuth is bigger than IWR1443BOOST EVM;

Could you please help us how to tuned, bigger the angle in Elevation?

  • 0
    TI__Mastermind 25795 points

    Hello,

        Could you please post the plots of Radiation pattern? 

    Is the stack-up is same as IWR1443BOOST material? Material and thickness need to match. 

    Typically you need to ensure Antenna geometry should meet the design target, Due to PCB fabrication process etching tolerances if not well controlled then you might see some of these issues.

    Could you please compare the finished PCB antenna geometry, RF trace width air gaps, via positions around the RF balls etc where you have seen the anomaly in the radiation pattern w.r.t. to design target shown in the below application note. 

    http://www.ti.com/lit/an/spracg5/spracg5.pdf

    Thanks and regards,

    CHETHAN KUMAR Y.B.