Low Power WiFi Module User Manual V1.3
http://www.tcp232.net
Jinan USR IOT Technology Limited.
Page 12 of 59
Figure 4. USR-WIFI232-G PCB Symbol Size
1.2.4. On-board Chip Antenna
USR-WIFI232-G module support internal on-board chip antenna option. When customer select internal
antenna, you shall comply with following antenna design rules and module location suggestions:
For customer PCB, RED color region (8.3x18.4mm) can’t put componet or paste GND net;
Antenna must away from metal or high components at least 10mm;
Antenna can’t be shielded by any meal enclosure; All cover, include plastic, shall away from
antenna at least 10mm;
Figure 5. Suggested Module Placement Region
USR company suggest USR-WIFI232-G module better locate in following region at customer board,
which to reduce the effect to antenna and wireless signal, and better consult USR company technical
people when you structure your module placement and PCB layout.
