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Getting Started with EZ-BT WICED Modules
Document Number: 002-23400 Rev. **
53
Figure 35. Clearance from a Large Metal Plane
8.4
Guidelines for Enclosures and Ground Plane
Use the following best practices with respect to enclosure design and ground planes:
▪
Ensure that there is no component, mounting screw, or ground plane near the tip or the length of the antenna
located on the EZ-BT WICED Module.
▪
Ensure that no battery cable, microphone cable, or trace crosses the antenna trace on the PCB.
▪
Ensure that the antenna is not completely covered by a metallic enclosure. If the product has a metallic casing or
shield, the casing should not cover the antenna. No metal is allowed in the antenna near the field.
▪
Ensure that paint on plastic enclosures is nonmetallic near the antenna.
▪
Ensure that the orientation of the antenna is in-line with the final product orientation (if possible) so that radiation
is maximized in the required direction. The polarization and position of the receive antenna should be taken into
account so that the module can be oriented to maximize the radiation.
▪
Ensure that there is no ground directly below the antenna Ground Clearance region of the module.
Module
Conducting plate
(1)
( )
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