Product Info

5. Antenna Information
Antenna Type
PCB b
oard antenna
Reduce Antenna Interference
While using the On-board PCB antenna, in order to have the best Wi-Fi performance, it’s
recommended to keep a minimum15mm distance between the antenna part and the other metal
pieces.
Fig. 1 shows five common antenna placement modes, of which scheme 1 and scheme 2 have
the best performance, and have little influence on the RF performance, which is comparable to the
RF performance tested by the module alone. If the design is limited, the PCB antenna must be
placed on the bottom board, you can refer to the placement of scheme 3, but there will be some
loss of radio frequency performance, almost 1-2 dBm attenuation. The radio frequency
performance of scheme 5 is the worst. Because the antenna is placed in the bottom plate, the radio
frequency signal can not be transmitted and received well, so it is not recommended to use.
Scheme 1: The antenna is outside the frame. Scheme 2: The antenna is placed along the
edge of the plate and hollowed underneath.