Data Sheet

Bluegiga – A Silicon Labs Company 18
6.1 Effect on antenna matching of a plastic sheet placed near the antenna
As an example on how a plastic sheet placed in the vicinity of the module and/or antenna effect the antenna
matching we can examine Figure 8 below.
Figure 8 Proximity effect of a 3 mm plastic sheet on antenna matching with different placements
Blue curve
Plastic sheet under antenna touching PCB
Violet curve
Plastic sheet against antenna at module end
Yellow curve
Plastic sheets under antenna touching PCB
and against antenna at module end