HUAWEI EM820W HSPA+ PC Embedded Module

 

Hardware Guide

RF Specifications

Figure 4-2Recommended antenna positions

zIt is recommended that the antenna pattern be designed based on the horizontal polarized omnidirectional pattern that facilitates the reception of strong signals especially in outdoor environments.

zBesides the module antennas, a laptop has other internal antennas, such as the WLAN antenna. Therefore, when designing the module antennas, the requirement on the isolation between module antennas and other laptop antennas should be considered. Ensure that proper distance is maintained between antennas if possible. To reduce the interference between antennas, it is recommended that an antenna is not designed close to another one.

zCarefully design the metallic components (such as the external frame of the metallic shell) in and near the antenna area by considering the effects on the antenna performance (such as whether the frequency offset of the antenna occurs and whether the antenna pattern is deformed).

4.6ESD Protection for the Antenna Interface

In practical application, pay attention to the ESD protection for the antenna interface of the EM820W module. Incorrect operation may result in permanent damage to the RF components.

Issue 01 (2010-12-31)

Huawei Proprietary and Confidential

26

Copyright © Huawei Technologies Co., Ltd.

 

 

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Huawei EM820W manual ESD Protection for the Antenna Interface

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.