GWF-3M04B is a WLAN module supporting IEEE 802.11 b/g/n standards with 6-pin or 4-pin
supporting USB 2.0 interface. This Module is designed to operate in 2.4GHz ISM frequency band,
it applies a highly integrated MAC/BBP and RF single chip RT3070 with 150Mbps PHY rate
supporting. A FEM (Front end module) is used on the board to increase the received sensitivity It
fully complies with IEEE802.11n draft 3.0 and IEEE802.11b/g feature. This is a low cost compact
WLAN module designed in products with embedded system for the wireless connectivity.

1.2 Features

802.11b: 1, 2, 5.5, 11Mbps;

802.11g: 6, 9, 12, 18，24, 36, 48, 54Mbps


802.11n:


(20MHz) MCS0-7, Support up to 72Mbps


(40MHz) MCS0-7, Support up to 150Mbps

OFDM, Peak rate 150Mbps, Peak throughput 90Mbps.

Security support for 64/128 WEP, WPA, WPA2, TKIP, AES

2. Product Information

2.1 Typical Specifications.
Standards IEEE802.11b/g & 802.11n (1T1R mode)
Operating Frequency 2.412GHz ~ 2.4835GHz ,ISM band，Ch14 need be requested.
Protocols 802.11b: CCK, QPSK, BPSK, 802.11g/n: OFDM
Antenna External 50 ohm antenna via an I-PEX receptacle or built-in on
board PCB antenna
Security WPA/WP2, 64/128/152-bit WEP, WPS
Transmit Output Power
(Antenna feed point) 11b: 18±1.0dBm @ 11Mbps
Transmit Output Power
(Antenna feed point) 11g: 16 ±1dBm @ 54Mbps
Transmit Output Power
(Antenna feed point) 802.11n: (HT20), 15+/-0.5 dBm, (HT40), 15+/-0.5 dBm,
Receive Sensitivity
(Antenna feed point) 11b: -87dBm @ 11Mbps; 11g: -73dBm @ 54Mpbs.
Receive Sensitivity
(Antenna feed point) 802.11n: (HT20), -69dBm@MSC7, (HT40),-65dBm@MSC7
Operating Voltage 5.0VDC ± 5% (or3.3VDV± 5% upon specific requirement)
Operating Current 802.11g, 54Mbps: <140mA at 5.0V DC input.
802.11b, 11Mbps: <180mA at 5.0V DC input.
Bus Interface USB 2.0/USB1.1
USB Interface 6-pin or 4-pin, 2.0mm , or 4-pin 2.54 mm pitch pin header