User's Manual

General 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 circuitry needs to stay

away from any circuit or component by at least 2mm. For best operation, Antenna

clearance area means Top and Bottom both required to be cleared.

3. Do not use metal materials near Antenna area. For example, battery snaps, USB

connector, iron case, etc.

Note: These guidelines are for design reference; real performance still depends on the

actual design.