Data Sheet

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Layout recommendations
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Figure 6.3 Details of the antenna ground clearance
Figure 6.4 Details about board dimensions and module placement
Any metallic objects in close proximity to the antenna will distort the antenna electromagnetic fields and will cause the antenna center
frequency to shift, reducing the performance. The minimum recommended distance of metallic and/or conductive objects is 10 mm in any
direction from the antenna except in the directions of the application PCB ground planes. Please note that even if the antenna center
frequency is not shifted by a nearby metallic object, they prevent the antenna from radiating freely by distorting the radiating pattern.
Metals are opaque to radio frequencies and may cause an equivalent of a shadow, a region of weaker performance, in the direction
covered by the metal.