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AWR1642BOOST: The difference of length of RF trace

user4169738
Prodigy 110 points
Part Number: AWR1642BOOST

Hi Expert

I was wondering if i need to keep original PCB size and ME housings. but it result in that the length of the RF trace is difference on Tx1, Tx2, Tx3 and Rx4, therefore it is possible to cause on computing azimuth what side-effect is.

Thank you~~

by Mike

  • 0
    TI__Guru*** 148804 points

    Hi,

    Please give us a few days to get back to you

    thank you

    Cesar

  • +1
    TI__Mastermind 30545 points

    Hello,

    How large is the difference in length?

    It should not cause any issues as long as the impedance is matched and the BGA transitions are correct. However, any deviations from the reference design should be verified through simulation, so I would recommend to simulate the design and make sure the S-parameters are as expected.

    Also, the spacing between the antennas is critical. The trace length is not critical as long as the spacing between the Tx/Rx is correct to create the desired virtual antenna array. Please refer to this app note for a basic overview.

    https://www.ti.com/lit/an/swra553a/swra553a.pdf  

    Regards,

    Adrian