User's Manual

Layout Design Suggestions

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General Layout Rules- All Printed Circuit Boards must comply with UL94V0 standard for

flammability. Always use RoHS compliant Parts and materials.

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Suggestions for Layout:

1. Do not place Power circuit, X’tal, Inductor, etc. near RF area.

2. The bigger Antenna clearance area, the better. The Antenna itself needs to stay away from

any circuit or component at least 2mm. Antenna clearance area means Top and Bottom

both required to be cleared.

3. Do not use metal materials on design where near Antenna area. For example, battery snaps,

USB connector, iron case, etc.

These guidelines are for design reference; real performance still depends on actual design.