Data Sheet

Wi-linktech Communication Technologies
(Shanghai) Co.,Ltd.
2020.03
www .w i - li nk te ch .c om
10
4.3 Matters needing attention
Bluetooth working at 2.4GHz frequency, should try to avoid the impact of
various factors on wireless transceiver, pay attention to the following points:
 Avoid using metal in the product shell that surrounds the moudle. If the shell is
metal,consider using an external antenna.
 Metal screws inside the product shoule
 To maximize RF performance,the user mortherboard layout should follow the following
recommendations:
1) Antenna clearance area: the user mainboard located directly below the module
antenna area shall not have any copper foil wiring (including power supply,
ground and signal layer).
2) Module position: the module should ideally be placed in the corner of the user's
main board, and the PCB antenna is located at the far end of the main board. This
position minimizes the clearance area of the antenna.
(Refer to the definition of antenna clearance area below)
图 4- 4 Antenna Keep out