Fanstel BlueFan BT680E, Manual

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BlueFan BT680F/E/T BLE5 Module
13
Mounting BT680F on the Host PCB
The following figure shows recommended mounting of BT680F module on the host PCB.
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For the best Bluetooth range performance, the antenna area of module shall extend 6 mm outside the edge
of host PCB board, or 6 mm outside the edge of a ground plane.
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The next choice is to place module on a corner of host PCB, the antenna area shall extend 6mm from the
edge of ground plane. Ground plane shall be at least 5 mm from the edge of the antenna area of module.
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Bluetooth range performance is degraded if a module is placed in the middle of the host PCB.
For the best Bluetooth range performance, keep all external metal at least 30mm from the antenna area.