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RN42 - Bluetooth module - shield pads

Discussion in 'Radio and Communications' started by atferrari, Dec 9, 2015.

  1. atferrari

    atferrari Well-Known Member

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    Location:
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    RN42 Bluetooth module

    The four shield pads, should they be also welded to the PCB (ground?). I think they should not but since they are shown in the scheme, I am in doubt.

    Thanks for any help.


    RN42 PCB footprint.png
     
  2. Mikebits

    Mikebits Well-Known Member

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    You don't want any grounds near the trace antenna. Since two of the shield pads are near the antenna, I would say, leave ungrounded.

    2.4 Module Mounting Details
    Figure 2-1 and Figure 2-2 show the recommended
    PCB footprint for the RN42 and RN42N, respectively.
    When laying out the carrier board for the RN42 module,
    the areas under the antenna and shielding connections
    should not have surface traces, ground planes, or
    exposed vias.
     

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