Data Sheet

3-7.Assembly recommendation 1:Underneath the module antenna and RF circuit on the main board PCB
copper need to clearance, and place close to the main board edge, as show in below Fig.
The antenna can't be near around metal parts and prevent material existence of electromagnetic radiation,
Can affect the manipulation of the distance.
3-8. Assembly recommendation 2:Signal trace and power supply trace, don't cross layout, as show in below
Fig.To avoid crosstalk, affect the receiving sensitivity.
4. Module pin definition and description of input and output ports
（4-1）HY-254101（PCB Antenna）pin map