User's Manual

9
2.4 Power supply
Table 2- 2 pin configuration
pin Symbol Description
2 GND Ground
3 3.3VD 3.3Vpower input
Since the module needs clean and low ripple 3.3V DC power supply, please properly design the power
supply to this module, otherwise the RF performance of the module might be deteriorated.
2.5 RF output
A、onboard antenna
Fig. 2-5 Reference pic with onboard antenna