Specifications

Jiaxing Tech-leading information technology Co., Ltd.
Tabl
e 4-3 Module design size
4.3 
Attention

Bluetoothworksatthefrequencyof2.4GHz,sotheinfluenceofvariousfactorsonthe
wirelesstransceivershouldbeavoidedasfaraspossible.Pleasenotethefollowingpoints：
Avoidusingmetalaspartoftheproducthousingsurroundingthemodule.Ifthehousingis
metal,considerusinganexternalantenna
ThemetalscrewsinsidetheproductshouldbekeptawayfromtheRFpartofthemodule
TomaximizeRFperformance,theusermainboardlayoutshouldfollowthefollowing
recommendations：
Antennaclearancearea:theuser'smainboardlocateddirectlybelowthemodule
antennaareashallnothaveanycopperfoilwiring,includingpowersupply,groundand
signallayer)。
Modulelocation:Ideally,themoduleshouldbeplacedinacorneroftheuser's
motherboard.ThePCBantennaislocatedatthefarendofthemotherboard.Thisposition
minimizestheantennaclearancearea。
（Refertothefollowingfigureforthedefinitionofantennaclearancearea
）

4‐  4  Antenna  Keep  out
10
Module profile size
/HQJWK;
 PP
:LGWK< PP
Antenna location size
/HQJWK;
 PP
:LGWK< PP
PCB thickness
+HLJKW+ PP
Total module thickness (PCB thicknes
s
maximum component height)
+HLJKW+
 PPW\SLFDO