Leedarson LA02303B, Руководство пользователя

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LA02303B BLE Module Specification
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It is suggested to put metallized through holes between the module pad and PCB slots to
improve connectivity. See the recommended lay-out in Figure 5.4.
Figure 5.4 Plug-in PCB View
5.4 SMD Land Pattern Example
Figure 5.5 SMD Land Pattern
Note:

Antenna area refer to
4.2 Module Placement
for antenna integration guidelines for optimal
performance;

The area marked by the R2 circle should be copper keep-out.