Specifications
Table Of Contents
Wi-linktechCommunicationTechnologies(Shanghai)Co.,Ltd
4.3 Matters needing attention
Bluetooth works at the frequency of 2402-2480MHz, so we should try to avoid
t
he influence of various factors on wireless transceiver. Please note the following points:
Avoid the use of metal in the product enclosure that surrounds the module. If the
enclosure is metal, an external antenna should be considered.
The metal screws inside the product should be kept away from the RF part of the
module.
To maximize RF performance, the user's motherboard layout should follow the
f
ollowing recommendations:
1) Antenna clearance area: the user's main board directly below the antenna area of
the module shall not have any copper foil wiring (including power, ground and
signal layers).
2) Module location: modules should ideally be arranged in one corner of the user's
main board,with the PCB antenna 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 in the figure below)
Figure 4-3 Keep out
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