User's Manual

Page

Lierda Science &

Technology Group

Securities

Securities Code

Code

IoT

IoT Interconnection,

Interconnection,

Interconnection, Smart

Smart

Smart Life

Life

Lierda Science & Technology Group

metal in 360 degrees around the antenna; otherwise, the radiation efficiency of the antenna will be affected,

and the communication distance will be greatly affected.

Fig. 4-1 Description of Clear Area of Antenna

2.2 External Antenna

The module is connected with the external antenna through the stamp hole. It is suggested

pre-reserving π matched network on the backplane. The external interface can be SMA or IPEX. As shown

in the following figure 4-2, for the RF wiring of the highlight part, it needs to lay the 50ohm impedance

line; the relationship between the width of the 50ohm impedance line, wiring and the copper-clad spacing,

board thickness is as shown in Figure 4-3.