Guangzhou Shirui Electronics R821USA1A WIFI and Bluetooth module User Manual
Guangzhou Shirui Electronics Co., Ltd WIFI and Bluetooth module Users Manual
Users Manual
WIFI-2-R821USA1A
IEEE 802.11a/ b/g/n/ac 1T1R USB2.0 Wi-Fi Module with BT 4.0
特性 Features：
¾ 接收制式 Reserving System
IEEE Std. 802.11a
IEEE Std. 802.11b
IEEE Std. 802.11g
IEEE Std. 802.11n
IEEE Std. 802.11ac
BT4.0
¾ 双波段 Dual Band
2.4G&5.8G
¾ 结构大小 Size
19.00mm x 17.00mm x 2.60mm
四川爱联科技有限公司
Sichuan iLink Technology Co.,Ltd
地址 Add: 四川省绵阳市安州工业园区
Anzhou,Industrial park,Mianyang,Sichuan
传真 Fax : +86-0816-2416943
网 址: http://www.changhong.com
技术 热线：
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
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Sichuan iLink Technology Co.,Ltd. page 2 of 22
客户确认反馈
Feedback of customer’s Confirmation
经确认，我方承认该规格书
We accept the specification after Confirmed
客户名称
Customer name
客户签字
Customer signature
确认日期
Confirmation Date
请签字后将此页与首页按以下地址回传我公司，谢谢！
Please feed back this paper and first paper after your signature by the address,thanks!
地址：四川省绵阳市安州工业园区
ADD： Anzhou,Industrial park,Mianyang,Sichuan
公司：四川爱联科技有限公司
Factory： Sichuan iLink Technology Co.,Ltd.
批准
Approved
审核
Checked
拟制
Designed
产品
Product
WIFI 模组
WIFI MODULE
型号
Model WIFI-2-R821USA1A
日期
Date 2017-08-18
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
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Sichuan iLink Technology Co.,Ltd. page 3 of 22
更改记录 Record of Modification
序号
No
更改日期
Date of
modification
主要更改内容
Main content of
modification
更改原因
Reason of
modification
更改通知编号
Serial number
of modification
确认
Confirm
1 2017-03-23 首版 覃达开
2 2017-04-01
1、增加产品图片 客户要求 覃达开
3 2017-04-29
1、修改 AC 模式
POWER 功率值 修正 power 标准 覃达开
4 2017-08-12 1、增加标签 产品增加认证号 覃达开
5 2017-8-18
增加 FCC NOTE 产品进行 FCC 认证 覃达开
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
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Sichuan iLink Technology Co.,Ltd. page 4 of 22
1. Introduction
WIFI-2-R821USA1A is based on realtek RTL8821AU, is a WLAN 11ac module, which fully supports the
features and functional compliance of IEEE 802.11 a/b/g/n/ac standards. This documentation describes
the engineering requirements specification.
1.1 RF module Overview
The general HW architecture for the module is shown in Figure 1. This WLAN Module design is based
on Realtek RTL8821AU. It is a highly integrated single-chip SISO(Single In Single Out) Wireless LAN
(WLAN) USB2.0 network interface controller complying with the 802.11ac specification. It combines a
MAC, a 1T1R capable baseband, and RF in a single chip. The RTL8821AU provides a complete
solution for a high throughput performance wireless client.
Figure 1 Module Block Diagram
1.2 Specification reference
This specification is based on additional references listed below.
_ IEEE Std. 802.11a
_ IEEE Std. 802.11b
_ IEEE Std. 802.11g
_ IEEE Std. 802.11n
_ IEEE Std. 802.11ac
_ Bluetooth 2.1/3.0/4.0
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
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Sichuan iLink Technology Co.,Ltd. page 5 of 22
1.3 System Functions
Table1: General Specification as below:
Main Chipset Realtek RTL8821AU-VS
Operating Frequency 2.412~2.472GHz & 5.18 -5.825 GHz
Wi-Fi Standard 802.11a/b/g/n (1x1)
Bluetooth 2.1/3.0/4.0
Modulation WIFI:
11b: DBPSK, DQPSK and CCK and DSSS
11a/g: BPSK, QPSK, 16QAM, 64QAM and OFDM
11n: BPSK, QPSK, 16QAM, 64QAM and OFDM
11ac： BPSK, QPSK, 16QAM, 64QAM, 256QAM and OFDM
BT:
FHSS,GFSK,DPSK,DQPSK
Data rates WIFI:
802.11b:11/5.5/2/1 Mbps
802.11g:54/48/36/24/18/12/9/6 Mbps
802.11n:up to 300Mbps
802.11ac:up to 433.5Mbps
BT:
1M/2M/3M
Host Interface USB 2.0
PCB Stack 4-layers design
Dimension Typical，19.00mm(L)*17.00mm(W) *2.60mm(H)
Operation Temperature 0℃ to +60℃
Storage Temperature -25℃ to +85℃
Operation Voltage 3.3V +/-10%,350mA
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
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Sichuan iLink Technology Co.,Ltd. page 6 of 22
2. Mechanical Specification
2.1 Mechanical Outline Drawing
Typical Dimension ( L x W ): 19.00mm x 17.00mm x 2.60mm
Pin definition
PIN Type
1 LED0
2 AGND
3 MAIN
4 AGND
5 AUX
6 AGND
7 BT_DIS
8 WL_DIS
9 VDD33
10 AGND
11 HSDM
12 HSDP
13 AGND
14 Pdn
15 DEV_WAKE_HOST
16 HOST_WAKE_DEV
NOTE1:General tolerance ±0.15mm
unless otherwise stated
NOTE2:Unit mm
11121314151687
10965432 1
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
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Sichuan iLink Technology Co.,Ltd. page 7 of 22
3. Electrical Specification
This Specification is based-on conductive DVT testing result. The extreme condition include overall
temperature (0℃,+25℃,+60℃) and overall voltage (4.5V,5V,5,5V).
3.1 IEEE 802.11a Section:
Items Contents
Specification IEEE802.11a
Mode OFDM
Channel CH36 to CH165
Data rate 6, 9, 12, 18, 24, 36, 48, 54Mbps
TX Characteristics Min. Typ. Max. Unit Remark
1. Power Levels
1) 11dBm Target (For Each antenna port) 9 11 13 dBm
2. Spectrum Mask @ Target Power
1) at fc +/-11MHz - - -20 dBr
2) at fc +/-20MHz - - -28 dBr
3) at fc > +/-30MHz - - -40 dBr
3. Constellation Error(EVM) @ Target Power
1) 6Mbps - - -5 dB
2) 9Mbps - - -8 dB
3) 12Mbps - - -10 dB
4) 18Mbps - - -13 dB
5) 24Mbps - - -16 dB
6) 36Mbps - - -19 dB
7) 48Mbps - - -22 dB
8) 54Mbps - -30 -25 dB
4. Frequency Error -20 -5 20 ppm
RX Characteristics Min. Typ. Max. Unit
5. Minimum Input Level Sensitivity(each chain)
1) 6Mbps (PER ≦10%) - -85 -82 dBm
2) 9Mbps (PER ≦10%) - -84 -81 dBm
3) 12Mbps (PER ≦10%) - -82 -79 dBm
4) 18Mbps (PER ≦10%) - -80 -77 dBm
5) 24Mbps (PER ≦10%) - -77 -74 dBm
6) 36Mbps (PER ≦10%) - -73 -70 dBm
7) 48Mbps (PER ≦10%) - -69 -66 dBm
8) 54Mbps (PER ≦10%) - -68 -65 dBm
6. Maximum Input Level (PER ≦10%) -30 - - dBm
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
四川爱联科技有限公司
Sichuan iLink Technology Co.,Ltd. page 8 of 22
3.2 IEEE 802.11b Section:
Items Contents
Specification IEEE802.11b
Mode DSSS / CCK
Channel CH1 to CH13
Data rate 1, 2, 5.5, 11Mbps
TX Characteristics Min. Typ. Max. Unit Remark
1. Power Levels(Calibrated)
1) 16dBm Target 14 16 18 dBm
2. Spectrum Mask @ Target Power
1) fc +/-11MHz to +/-22MHz - - -30 dBr
2) fc > +/-22MHz - - -50 dBr
3. Constellation Error(EVM) @ Target Power
1) 1Mbps - - -10 dB
2) 2Mbps - - -10 dB
3) 5.5Mbps - - -10 dB
4) 11Mbps - -20 -10 dB
4. Frequency Error -20 - 20 ppm
RX Characteristics Min. Typ. Max. Unit
5. Minimum Input Level Sensitivity(each chain)
1) 1Mbps (FER ≦8%) - -83 -76 dBm
2) 2Mbps (FER ≦8%) - -80 -76 dBm
3) 5.5Mbps (FER ≦8%) - -79 -76 dBm
4) 11Mbps (FER ≦8%) - -76 -76 dBm
6. Maximum Input Level (FER ≦8%) -10 - - dBm
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
四川爱联科技有限公司
Sichuan iLink Technology Co.,Ltd. page 9 of 22
3.3 IEEE 802.11g Section:
Items Contents
Specification IEEE802.11g
Mode OFDM
Channel CH1 to CH13
Data rate 6, 9, 12, 18, 24, 36, 48, 54Mbps
TX Characteristics Min. Typ. Max. Unit Remark
2. Power Levels
1) 14dBm Target 12 14 16 dBm
3. Spectrum Mask @ Target Power
1) at fc +/-11MHz - - -20 dBr
2) at fc +/-20MHz - - -28 dBr
3) at fc > +/-30MHz - - -40 dBr
4. Constellation Error(EVM) @ Target Power
1) 6Mbps - - -5 dB
2) 9Mbps - - -8 dB
3) 12Mbps - - -10 dB
4) 18Mbps - - -13 dB
5) 24Mbps - - -16 dB
6) 36Mbps - - -19 dB
7) 48Mbps - - -22 dB
8) 54Mbps - -30 -25 dB
5. Frequency Error -20 - 20 ppm
RX Characteristics Min. Typ. Max. Unit
6 Minimum Input Level Sensitivity
1) 6Mbps (PER ≦10%) - -85 -80 dBm
2) 9Mbps (PER ≦10%) - -84 -79 dBm
3) 12Mbps (PER ≦10%) - -82 -77 dBm
4) 18Mbps (PER ≦10%) - -80 -75 dBm
5) 24Mbps (PER ≦10%) - -77 -72 dBm
6) 36Mbps (PER ≦10%) - -73 -68 dBm
7) 48Mbps (PER ≦10%) - -69 -64 dBm
8) 54Mbps (PER ≦10%) - -68 -63 dBm
6. Maximum Input Level (PER ≦10%) -20 - - dBm
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
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Sichuan iLink Technology Co.,Ltd. page 10 of 22
3.4 IEEE 802.11n HT20 Section:
Items Contents
Specification IEEE802.11n HT20 @ 2.4GHz
Mode OFDM
Channel CH1 to CH13
Data rate (MCS index) MCS0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15
TX Characteristics Min. Typ. Max. Unit Remark
1. Power Levels
1) 13dBm Target 11 13 15 dBm
2. Spectrum Mask @ Target Power
1) at fc +/-11MHz - - -20 dBr
2) at fc +/-20MHz - - -28 dBr
3) at fc > +/-30MHz - - -45 dBr
3. Constellation Error(EVM) @ Target Power
1) MCS0 - - -5 dB
2) MCS1 - - -10 dB
3) MCS2 - - -13 dB
4) MCS3 - - -16 dB
5) MCS4 - - -19 dB
6) MCS5 - - -22 dB
7) MCS6 - - -25 dB
8) MCS7 - -31 -28 dB
4. Frequency Error -20 - 20 ppm
RX Characteristics Min. Typ. Max. Unit
5. Minimum Input Level Sensitivity
1) MCS0 (PER ≦10%) - -85 -82 dBm
2) MCS1 (PER ≦10%) - -84 -79 dBm
3) MCS2 (PER ≦10%) - -82 -77 dBm
4) MCS3 (PER ≦10%) - -80 -74 dBm
5) MCS4 (PER ≦10%) - -76 -70 dBm
6) MCS5 (PER ≦10%) - -72 -66 dBm
7) MCS6 (PER ≦10%) - -70 -65 dBm
8) MCS7 (PER ≦10%) - -69 -64 dBm
6. Maximum Input Level (PER ≦10%) -20 - - dBm
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
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Sichuan iLink Technology Co.,Ltd. page 11 of 22
3.5 IEEE 802.11n HT20 Section:
Items Contents
Specification IEEE802.11n HT20 @ 5GHz
Mode OFDM
Channel CH36 to CH165
Data rate (MCS index) MCS0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15
TX Characteristics Min. Typ. Max. Unit Remark
1. Power Levels
1) 10dBm Target 8 10 12 dBm
2. Spectrum Mask @ Target Power
1) at fc +/-11MHz - - -20 dBr
2) at fc +/-20MHz - - -28 dBr
3) at fc > +/-30MHz - - -45 dBr
3. Constellation Error(EVM) @ Target Power
1) MCS0 - - -5 dB
2) MCS1 - - -10 dB
3) MCS2 - - -13 dB
4) MCS3 - - -16 dB
5) MCS4 - - -19 dB
6) MCS5 - - -22 dB
7) MCS6 - - -25 dB
8) MCS7 - -31 -28 dB
4. Frequency Error -20 - 20 ppm
RX Characteristics Min. Typ. Max. Unit
5. Minimum Input Level Sensitivity
1) MCS0 (PER ≦10%) - -85 -82 dBm
2) MCS1 (PER ≦10%) - -84 -79 dBm
3) MCS2 (PER ≦10%) - -82 -77 dBm
4) MCS3 (PER ≦10%) - -80 -74 dBm
5) MCS4 (PER ≦10%) - -76 -70 dBm
6) MCS5 (PER ≦10%) - -72 -66 dBm
7) MCS6 (PER ≦10%) - -70 -65 dBm
8) MCS7 (PER ≦10%) - -69 -64 dBm
6. Maximum Input Level (PER ≦10%) -30 - - dBm
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
四川爱联科技有限公司
Sichuan iLink Technology Co.,Ltd. page 12 of 22
3.6 IEEE 802.11n HT40 Section:
Items Contents
Specification IEEE802.11n HT40 @ 2.4GHz
Mode OFDM
Channel CH3 to CH11
Data rate (MCS index) MCS0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15
TX Characteristics Min. Typ. Max. Unit Remark
1. Power Levels
1) 13dBm Target 11 13 15 dBm
2. Spectrum Mask @ Target Power
1) at fc +/-21MHz - - -20 dBr
2) at fc +/-40MHz - - -28 dBr
3) at fc > +/-60MHz - - -45 dBr
3. Constellation Error(EVM) @ Target Power
1) MCS0 - - -5 dB
2) MCS1 - - -10 dB
3) MCS2 - - -13 dB
4) MCS3 - - -16 dB
5) MCS4 - - -19 dB
6) MCS5 - - -22 dB
7) MCS6 - - -25 dB
8) MCS7 - -31 -28 dB
4. Frequency Error -20 - 20 ppm
RX Characteristics Min. Typ. Max. Unit
5. Minimum Input Level Sensitivity
1) MCS0 (PER ≦10%) -85 -79 dBm
2) MCS1 (PER ≦10%) -82 -76 dBm
3) MCS2 (PER ≦10%) -79 -74 dBm
4) MCS3 (PER ≦10%) -77 -71 dBm
5) MCS4 (PER ≦10%) -72 -67 dBm
6) MCS5 (PER ≦10%) -69 -63 dBm
7) MCS6 (PER ≦10%) -68 -62 dBm
8) MCS7 (PER ≦10%) - -66 -61 dBm
6. Maximum Input Level(PER ≦10%) -20 - - dBm
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
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Sichuan iLink Technology Co.,Ltd. page 13 of 22
3.7 EEE 802.11n HT40 Section:
Items Contents
Specification IEEE802.11n HT40 @ 5GHz
Mode OFDM
Channel CH38 to CH163
Data rate (MCS index) MCS0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15
TX Characteristics Min. Typ. Max. Unit Remark
1. Power Levels
1) 10dBm Target 8 10 12 dBm
2. Spectrum Mask @ Target Power
1) at fc +/-21MHz - - -20 dBr
2) at fc +/-40MHz - - -28 dBr
3) at fc > +/-60MHz - - -45 dBr
3. Constellation Error(EVM) @ Target Power
1) MCS0 - - -5 dB
2) MCS1 - - -10 dB
3) MCS2 - - -13 dB
4) MCS3 - - -16 dB
5) MCS4 - - -19 dB
6) MCS5 - - -22 dB
7) MCS6 - - -25 dB
8) MCS7 - -31 -28 dB
4. Frequency Error -20 - 20 ppm
RX Characteristics Min. Typ. Max. Unit
5. Minimum Input Level Sensitivity
1) MCS0 (PER ≦10%) -85 -79 dBm
2) MCS1 (PER ≦10%) -82 -76 dBm
3) MCS2 (PER ≦10%) -79 -74 dBm
4) MCS3 (PER ≦10%) -77 -71 dBm
5) MCS4 (PER ≦10%) -72 -67 dBm
6) MCS5 (PER ≦10%) -69 -63 dBm
7) MCS6 (PER ≦10%) -68 -62 dBm
8) MCS7 (PER ≦10%) - -66 -61 dBm
6. Maximum Input Level(PER ≦10%) -30 - - dBm
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
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Sichuan iLink Technology Co.,Ltd. page 14 of 22
3.8 IEEE 802.11ac HT20 Section:
Items Contents
Specification IEEE802.11ac HT20 @ 5GHz
Mode OFDM
Channel CH36 to CH165
Data rate (MCS index) Nss1 MCS0/1/2/3/4/5/6/7/8
Nss2 MCS0/1/2/3/4/5/6/7/8
TX Characteristics Min. Typ. Max. Unit Remark
1. Power Levels
1)10dBm Target 8 10 12 dBm *
2. Spectrum Mask @ Target Power
1) at fc +/-11MHz - - -20 dBr
2) at fc +/-20MHz - - -28 dBr
3) at fc > +/-30MHz - - -40 dBr
3. Constellation Error(EVM) @ Target Power
1) Nss1 MCS0 - - -5 dB
2) Nss1 MCS1 - - -10 dB
3) Nss1 MCS2 - - -13 dB
4) Nss1 MCS3 - - -16 dB
5) Nss1 MCS4 - - -19 dB
6) Nss1 MCS5 - - -22 dB
7) Nss1 MCS6 - - -25 dB
8) Nss1 MCS7 - - -27 dB
9) Nss1 MCS8 - -34 -30 dB
4. Frequency Error -20 - 20 ppm
RX Characteristics Min. Typ. Max. Unit
5. Minimum Input Level Sensitivity
1) Nss1 MCS0 (PER ≦10%) - -85 -82 dBm
2) Nss1 MCS1 (PER ≦10%) - -82 -79 dBm
3) Nss1 MCS2 (PER ≦10%) - -80 -77 dBm
4) Nss1 MCS3 (PER ≦10%) - -77 -74 dBm
5) Nss1 MCS4 (PER ≦10%) - -73 -70 dBm
6) Nss1 MCS5 (PER ≦10%) - -69 -66 dBm
7) Nss1 MCS6 (PER ≦10%) - -68 -65 dBm
8) Nss1 MCS7 (PER ≦10%) - -67 -64 dBm
9) Nss1 MCS8 (PER ≦10%) -62 -59 dBm
6. Maximum Input Level (PER ≦10%) -30 - - dBm
*power by rate off
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
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3.9 IEEE 802.11ac HT40 Section:
Items Contents
Specification IEEE802.11ac HT40 @ 5GHz
Mode OFDM
Channel CH38 to CH159
Data rate (MCS index) Nss1 MCS0/1/2/3/4/5/6/7/8/9
Nss2 MCS0/1/2/3/4/5/6/7/8/9
TX Characteristics Min. Typ. Max. Unit Remark
1. Power Levels
1) 10dBm Target 8 10 12 dBm *
2. Spectrum Mask @ Target Power
1) at fc +/-21MHz - - -20 dBr
2) at fc +/-40MHz - - -28 dBr
3) at fc > +/-60MHz - - -40 dBr
3. Constellation Error(EVM) @ Target Power
1) Nss1 MCS0 - - -5 dB
2) Nss1 MCS1 - - -10 dB
3) Nss1 MCS2 - - -13 dB
4) Nss1 MCS3 - - -16 dB
5) Nss1 MCS4 - - -19 dB
6) Nss1 MCS5 - - -22 dB
7) Nss1 MCS6 - - -25 dB
8) Nss1 MCS7 - - -27 dB
9) Nss1 MCS8 - - -30 dB
10) Nss1 MCS9 - -35 -32 dB
4. Frequency Error -20 - 20 ppm
RX Characteristics Min. Typ. Max. Unit
5. Minimum Input Level Sensitivity
1) Nss1 MCS0 - -82 -79 dBm
2) Nss1 MCS1 - -79 -76 dBm
3) Nss1 MCS2 - -77 -74 dBm
4) Nss1 MCS3 - -74 -71 dBm
5) Nss1 MCS4 - -70 -67 dBm
6) Nss1 MCS5 - -66 -63 dBm
7) Nss1 MCS6 - -65 -62 dBm
8) Nss1 MCS7 - -64 -61 dBm
9) Nss1 MCS8 - -59 -56 dBm
10) Nss1 MCS9 - -57 -54 dBm
6. Maximum Input Level (PER ≦10%) -30 - - dBm
*power by rate off
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
四川爱联科技有限公司
Sichuan iLink Technology Co.,Ltd. page 16 of 22
3.10 IEEE 802.11ac HT80 Section:
Items Contents
Specification IEEE802.11ac HT80 @ 5GHz
Mode OFDM
Channel CH42 to CH155
Data rate (MCS index) Nss1 MCS0/1/2/3/4/5/6/7/8/9
Nss2 MCS0/1/2/3/4/5/6/7/8/9
TX Characteristics Min. Typ. Max. Unit Remark
1. Power Levels
1) 10dBm Target 8 10 12 dBm *
2. Spectrum Mask @ Target Power
1) at fc +/-41MHz - - -20 dBr
2) at fc +/-80MHz - - -28 dBr
3) at fc > +/-120MHz - - -40 dBr
3. Constellation Error(EVM) @ Target Power
1) Nss1 MCS0 - - -5 dB
2) Nss1 MCS1 - - -10 dB
3) Nss1 MCS2 - - -13 dB
4) Nss1 MCS3 - - -16 dB
5) Nss1 MCS4 - - -19 dB
6) Nss1 MCS5 - - -22 dB
7) Nss1 MCS6 - - -25 dB
8) Nss1 MCS7 - - -27 dB
9) Nss1 MCS8 - - -30 dB
10) Nss1 MCS9 - -35 -32 dB
4. Frequency Error -20 - 20 ppm
RX Characteristics Min. Typ. Max. Unit
5. Minimum Input Level Sensitivity
1) Nss1 MCS0 - -79 -76 dBm
2) Nss1 MCS1 - -76 -73 dBm
3) Nss1 MCS2 - -74 -71 dBm
4) Nss1 MCS3 - -71 -68 dBm
5) Nss1 MCS4 - -67 -64 dBm
6) Nss1 MCS5 - -63 -60 dBm
7) Nss1 MCS6 - -62 -59 dBm
8) Nss1 MCS7 - -61 -58 dBm
9) Nss1 MCS8 - -56 -53 dBm
10) Nss1 MCS9 - -54 -51 dBm
6. Maximum Input Level (PER ≦10%) -30 - - dBm
*power by rate off
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
四川爱联科技有限公司
Sichuan iLink Technology Co.,Ltd. page 17 of 22
3.11 Bluetooth Section:
Items Contents
Specification BT2.1/3.0/4.0
Mode FHSS,GFSK,DPSK,DQPSK
Number of Channel 78 Channels
Frequency Band 2.402 GHz ~2.480GHz
Min. Typ. Max. Unit Remark
1. Output Power -6 20 dBm
2.Gain step 2 4 8 dB
3. Receiver sensitivity (BER ≦0.1%) - -89 -85 dBm
4. Maximum usable signal (BER ≦0.1%) -15 -6 -
5. C/I co-channel (BER<0.1%) - 10 11 dB
6. C/I 1MHz (BER<0.1%) - -16 0 dB
7. C/I 2MHz (BER<0.1%) - -41 -30 dB
8. C/I≥3MHz (BER<0.1%) - -50 -40 dB
9. C/I Image channel (BER<0.1%) - -24 -9 dB
10. C/I Image 1MHz (BER<0.1%) - -35 -20 dB
11. Inter-modulation - -13 - dB
12. Out-of-band blocking
1). 30MHz to 2000MHz -8 - - dBm
2). 2000MHz to 2400MHz -25 - - dBm
3). 2500MHz to 3000MHz -25 - - dBm
4). 3000MHz to 12.75GHz -8 - - dBm
13. Modulation characteristics
1). ∆f1avg 140 170 175 KHz
2). ∆f2max (For at least 99.9% of all ∆f2max) 115 145 - KHz
3). ∆f2avg /∆f1avg 0.8 0.84 - KHz
14. ICFT -75 ±8.0 +75 KHz
15. Carrier frequency drift
1). One slot packet (DH1) -25 ﹣13 +25 KHz
2). Two slot packet (DH3) -40 ﹣12 +40 KHz
3). Five slot packet (DH5) -40 ﹣12 +40 KHz
4). Max drift rate - 5.853 20 KHz/50us
16. TX output spectrum(20dB bandwidth) - 796 1000 KHz
17. In-Band spurious emission
1). ±2MHz offset - -39 -20 dBm
2). ±3MHz offset - -50 -40 dBm
3). >±3MHz offset - -50 -40 dBm
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
四川爱联科技有限公司
Sichuan iLink Technology Co.,Ltd. page 18 of 22
4 Antenna matching
The 3th Pin and 5th Pin connect to antenna, please refer to design demand
a).模块和天线要求远离干扰源，模块地和天线地要求为一个整体。
b).PIN6为WIFI模组的RF接口，与天线之间布线要求共面阻抗为50Ω，建议使用弧线和直线，长度尽可能短。
c).L1,L2,C1组成π型匹配网络并靠近天线接口设计，具体根据天线推荐及排版设计的实测效果进行调整。
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
四川长虹电子部品有限公司
Sichuan Changhong Electronic Component Co., Ltd
page 19 of 22
5. Package Information
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
四川爱联科技有限公司 Sichuan iLink Technology Co.,Ltd.
page 20 of 22
6、Refelow Standard Condition
升 温 区：温度：<150℃，时间：60～90 秒之间, 斜率控制在 1～3℃/S 之间。
预热恒温区：温度：150℃～200℃，时间：60-120 秒之间，斜率在 0.3-0.8 之间。
回流焊接区：峰值温度 235℃~250℃(建议峰值温度＜245℃），时间 30-70 秒。
冷 却 区：温度：217℃~170℃，斜率在 3～5℃/S 之间。
焊料为锡银铜合金无铅焊料/ Sn&Ag&Cu Lead-free solder(SAC305)。
注意：产品可承受极限温度 255 度5秒，为保证产品质量，回流曲线应该在保证焊点质量时不损害 PCB 和元器件之间寻求平衡，并在以上曲线
区间内进行为宜。
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
四川爱联科技有限公司 Sichuan iLink Technology Co.,Ltd.
page 21 of 22
7、Product Picture
TOP VIEW BOTTOM VIEW
产品丝印说明如下：
1、第一行“94V-0”为阻燃标志。
2、第二行“S”为PCB供应商代码。
3、第二行“Y16M12D21”为PCB生产批次信息，会稍有不同。
4、第三行“JUB7.820.1321-2”为我司产品图号。
WIFI-2-R821USA1A
Dual Band 11ac USB WiFi Module with RTL8821AU
四川爱联科技有限公司
Sichuan iLink Technology Co.,Ltd. page 22 of 22
FCC Statement
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and (2) this device must accept any interference received, includ
ing interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authori
ty to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to pa
rt 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a re
sidential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and u
sed in accordance with the instructions, may cause harmful interference to radio communications. However, there is n
o guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interferenc
e to radio or television reception, which can be determined by turning the equipment off and on, the user is encourage
d to try to correct the interference by one or more of the following measures:
‐ Reorient or relocate the receiving antenna.
‐ Reorient or relocate the receiving antenna.
‐ Reorient or relocate the receiving antenna.
‐Consult the dealer or an experienced radio/TV technician for help important announcement
Important Note:
Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment
should be installed and operated with minimum distance 20cm between the radiator and your body.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
Country Code selection feature to be disabled for products marketed to the US/Canada.
This device is intended only for OEM integrators under the following conditions:
1. The antenna must be installed such that 20 cm is maintained between the antenna and users, and
2. The transmitter module may not be co-located with any other transmitter or antenna,
Important Note:
In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another
transmitter), then the FCC authorization is no longer considered valid and the FCC ID cannot be used on the final
product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including
the transmitter) and obtaining a separate FCC authorization.
Any company of the host device which install this modular with limit modular approval should perform the test of
radiated emission and spurious emission according to FCC part 15C:15.247 and 15.209 requirement, Only if the test
result comply with FCC part 15.247 and 15.209 requirement, then the host can be sold legally.
End Product Labeling
If the FCC identification number is not visible when the module is installed inside another device, then the outside of
the device into which the module is installed must also display a label referring to the enclosed module. This exterior
label can use wording such as the following: Contains Transmitter Module FCC ID: 2AFG6-R821USA1A.
Manual Information to the End User
The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this
RF module in the user’s manual of the end product which integrates this module.
The end user manual shall include all required regulatory information/warning as show in this manual.
When the module is installed inside another device, the user manual of this device must contain below warning
statements;
1. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including interference that may cause undesired
operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's
authority to operate the equipment. The devices must be installed and used in strict accordance with the
manufacturer's instructions as described in the user documentation that comes with the product.