Specifications

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The following precautions should be considered during designing with PCB antenna:
Do not place any electrical components or grounding in antenna area on main board and it’s
better to leave this area blank on PCB.
It is recommended to not place any electrical components within 10mm range of module
antenna and not design any circuit or bond copper on main board under this area.
Do not use the module inside any metal case or containers with metal painting.
Keep the antenna of wifi module next to the edge of main board (as shown in Fig 5) during
design of PCB to ensure better performance of antenna.
Fig 5 BL3358-P Recommended PCB layout
4.4. Mechanical Dimensions
Please refer to Fig 6 for the dimensions of module.