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MMWCAS-RF-EVM: The area of the antenna area solder mask opening is much larger than the area of the antenna

Cherry Zhou
Mastermind 22235 points
Part Number: MMWCAS-RF-EVM

Hi team,

Here's an issue from the customer may need your help:

The area of the antenna area solder mask opening is much larger than the area of the antenna, 

The solder mask opening near the antenna on the board (as shown in the blue box) is much larger than the antenna area, why? Are there any factors affecting the electrical parameters of the antenna?

And is there a hfss or ads simulation model for the board antenna available?  

Could you help check this case? Thanks.

Best Regards,

Cherry

  • 0
    TI__Guru*** 143584 points

    Hi,

    Unfortunately there is no simulation information available.

    I have asked our antenna expert to review your question below

    Cherry Zhou said:
    The solder mask opening near the antenna on the board (as shown in the blue box) is much larger than the antenna area, why? Are there any factors affecting the electrical parameters of the antenna?

    Thank you

    Cesar

  • 0 in reply to Cesar
    TI__Expert 4130 points

    Hi Cherry,

    The design is simulated with these solder mask cutouts.  It is hard to tell if adding solder mask to these areas will impact performance without running HFSS simulation.  I would recommend leaving everything the same.

    Regards,
    Sami