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3.3
3.3
Antenna
Antenna
3.3 Antenna
3.3
Antenna
3.3.1 On-board Chip Antenna
USR-WIFI232-A/B/C supports a built-in antenna options, when customers choose a built-in antenna,
must comply with the following built-in antenna module placement of notes and general rules:
�
Be in the user's PCB board, and the red region ( 6X8mm ) corresponding to the region cannot be
placed components and with GND;
�
Antenna must away from the metal, at least to the distance around the higher components above
10MM;
�
Antenna cannot be shielded by any meal enclosure; All cover, include plastic, shall away from
antenna at least 10MM;
Figure 13
USR technological suggestions USR-WIFI232-A/B/C module be placed in the following areas of user
board, in order to reduce the antenna and a wireless signal influence, at the same time, please consult
with technology and technical support staff to assist module placement and associated regions of
Layout design.
Figure 14
3.3.2 External Antenna
USR-WIFI232-A/B/C modules support internal antenna and external antenna option for user
dedicated application. If user select external antenna, USR-WIFI232-A/B/C modules must be
connected to the 2.4G antenna according to IEEE 802.11b/g/n standards.
The antenna parameters required as follows:
Jinan USR IOT Technology Limited
USR-WIFI232-A/B/C User Manual
USR-WIFI232-A/B/C
USR-WIFI232-A/B/C
Chip
Chip
USR-WIFI232-A/B/C
USR-WIFI232-A/B/C Chip
Chip Antenna
Suggested
Suggested
Module
Module
Suggested Module
Suggested
Module Placement
Page 18 of 93
http://www.usriot.com
Antenna
Antenna
Keep
Keep
Out
Out
Region
Region
Antenna Keep
Keep Out
Out Region
Region
Placement
Placement
Region
Region
Placement Region
Region
tec@usr.cn
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