HUAWEI EM820W HSPA+ PC Embedded Module

 

 

Hardware Guide

Contents

 

4.4.1 Antenna Design Indicators

20

 

4.4.2 Interference

23

 

4.4.3 GSM/WCDMA Antenna Requirements

23

 

4.4.4 Radio Test Environment

24

4.5

Design Recommendations

25

 

4.5.1 Recommendations for Designing the Module Antennas

25

4.6

ESD Protection for the Antenna Interface

26

5 Electrical and Reliability Features

28

5.1 About This Chapter

28

5.2

Extreme Working Conditions

28

5.3

Working and Storage Temperatures and Humidity

28

5.4

Electrical Criteria of Application Interfaces

29

5.5

Power Supply Features

30

 

5.5.1 Power Supply

30

 

5.5.2 Power Consumption

30

5.6

Reliability Features

33

5.7 EMC and ESD Features

35

6 Mechanical Specifications

36

6.1

Dimensions and Interfaces

36

 

6.1.1 Dimensions and Interfaces of EM820W

36

6.2

Dimensions of the Mini PCI Express Connector

36

6.3

Specification Selection for Fasteners

37

 

6.3.1 Installing the EM820W on the Main Board of PC

37

 

6.3.2 Romoving the EM820W from the Main Board of PC

39

7 Appendix A Circuits of Typical Interfaces

40

8 Appendix B Acronyms and Abbreviations

41

Issue 01 (2010-12-31)

Huawei Proprietary and Confidential

ii

Copyright © Huawei Technologies Co., Ltd.

 

 

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Huawei EM820W manual Recommendations for Designing the Module Antennas, Electrical and Reliability Features

EM820W specifications

The Huawei EM820W is a cutting-edge mobile broadband device that exemplifies Huawei's commitment to innovation and excellence in the telecommunications sector. Designed for seamless connectivity, the EM820W caters primarily to users who demand high-speed data access while on the move.

One of the standout features of the Huawei EM820W is its support for high-speed 4G LTE connectivity. With download speeds that can reach up to 150 Mbps and upload speeds of up to 50 Mbps, users can enjoy smooth streaming, rapid downloads, and responsive online gaming experiences. This capability makes the device an ideal choice for both individual users and business professionals who rely on robust internet access.

The EM820W is equipped with a compact and lightweight design, making it highly portable. This device can be easily carried in a pocket or bag, allowing users to stay connected wherever they go. Its plug-and-play feature simplifies the setup process, ensuring that even those who are not tech-savvy can easily get online.

Another notable aspect of the Huawei EM820W is its compatibility with a wide range of operating systems, including Windows, macOS, and various distributions of Linux. This versatility means that users can connect the device to their preferred platforms without facing compatibility issues, enhancing the overall user experience.

The device also incorporates advanced security features to safeguard user data, including built-in encryption protocols. This is particularly important for business users who require secure connections for sensitive transactions and communications.

In addition to its connectivity capabilities, the EM820W showcases energy-efficient technologies that optimize battery performance. The device is designed to consume minimal power, allowing users to prolong usage times without frequently recharging.

The Huawei EM820W comes with a user-friendly interface, enabling users to easily manage their connections and monitor data usage. This feature is valuable for those who need to track their internet consumption to avoid exceeding data limits imposed by service providers.

With its blend of speed, portability, and user-oriented features, the Huawei EM820W stands out as a reliable solution for those seeking robust mobile broadband capabilities. Whether for personal use or professional needs, this device ensures that users remain connected in an increasingly digital world.