User's Manual

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OPENBRAIN Technologies Co., LTD.
4. Precautions during handling
4.1. General precautions
Precautions for handling M5G modules are as follows:
Do not expose the modules to static electricity as it may cause damage.
Use power source that will provide enough current to power input terminal of module.
Use only rated voltage or RF signals.
4.2. Maximizing RF Performance
To maximize RF performance of products that use M5G module, PCB has to be designed taking
into the consideration the following:
Sufficient Ground area has to be secured on Main PCB for stable RF performance.
Objects (conductors, insulators) close to antennae will interfere radiation and distort radiation
pattern. For conductors, they should be at least 10mm away from antennae and for insulators
such as plastic parts, at least 5mm away.
Main PCB must be designed such that the ground of Main PCB does not intrude into ground
of module and antennae boundary lines as shown in the diagram below.
How to mount module onto Main PCB
Ground surface of Main PCB
Boundary of Main PCB Remove Ground of PCB
Remove Ground of PCB