User's Manual

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
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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