Avalue Technology OFT-10W01 Quick Reference Manual page 26

OFT-10W01
If the case contained the carbon fiber or the metals, please keep more than 3 mm
spacing for antenna and avoid the overlapping.
The distance has to be retained for 5 mm between two adjacent antennas.
The Cu foil (Al foil) of the antenna has to be pasted on the large grounding. (For
example: the metal back of the LCD / The large area AL Foil of NB A cover)
26 OFT-10W01 Quick Reference Guide