Wi-Fi&Bluetooth Module Series
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connected to ground.
The distance between the RF pins and the RF connector should be as short as possible, and all the
right-angle traces should be changed to curved ones.
There should be clearance under the signal pin of the antenna connector or solder joint.
The reference ground of RF traces should be complete. Meanwhile, ground vias around RF traces
and the reference ground improves RF performance. The distance between the ground vias and RF
traces should be more than two times the width of RF signal traces (2 × W).
Keep RF traces away from interference sources, and avoid intersection and paralleling between
traces on adjacent layers.
For more details about RF layout, see
document [2]
4.3. Requirements for Antenna Design
The following table shows the requirements on RF antenna.
Table 23: Antenna Cable Requirements
Table 24: Antenna requirements
Type
Requirements
2.412
–2.484 GHz
Cable insertion loss < 1 dB
Type
Requirements
Frequency Range
2.412
–2.484 GHz
VSWR
< 2
Gain (dBi)
Typ. 1
Max Input Power (W)
50
Input Impedance (
Ω)
50
Polarization Type
Vertical
