Product Info

- 12 -
4.3 Built in antenna
See Figure 2 for the built-in antenna. The PCB board in the area should be cut directly
directly, and the ground laying, wiring and metal components should be avoided directly under
the antenna and in the two directions indicated by the arrow.
图 2 AC8401 Antenna diagram
The gain of PCB antenna of this module is about 0dB, as shown in Figure 3.