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EVAL-AD8349 material

I wander the EVAL-AD8349 evaluation board material ,is it FR4 or Rogers material , I can't make sure that if the FR4 material board can go 2.4 GHz

signal well.In the meanwhile,I used FR4 material at a two layer board to operate AD8349,finding it too hot , I wonder why and can I improve it by changing the material or changing 2 layers to 4 layers.  Waiting for answer,thank you.!!!

  • Apologies for the delayed response. We've had some updates to our automatic message notifications, and previously did not see this message when it was posted.

    The board material is FR-4. If the device is hot, you may need additional grounding vias for good thermal performance. You will notice the standard evaluation board has ground vias underneath the device.