Huawei EM820W manual Radio Test Environment, Passive Tests

Models: EM820W

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HUAWEI EM820W HSPA+ PC Embedded Module

Hardware Guide

RF Specifications

 

 

 

 

GSM/WCDMA Antenna Requirements

 

 

 

 

Bandwidth

70 MHz in GSM850

 

 

80 MHz in GSM900

 

 

170 MHz in DCS

 

 

140 MHz PCS

 

 

70 MHZ in WCDMA850

 

 

80 MHz in WCDMA900

 

 

140 MHz in WCDMA1900

 

 

250 MHz in WCDMA2100 band

 

 

 

 

Gain

Gain < 3dBi

 

 

 

 

Impedance

50 Ohm

 

 

 

 

Input power

> 33dBm(2 W) peak power in GSM

 

 

> 24dBm Average power in WCDMA

 

 

 

 

VSWR absolute max

<= 10:1

 

 

 

 

VSWR recommended

<= 2:1

 

 

 

Furthermore, if the device is developed for US and/or Canada market, it must comply with the FCC and/or IC approval requirements:

This device is to be used only for mobile and fixed application. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. End-Users must be provided with transmitter operation conditions for satisfying RF exposure compliance. OEM integrators must ensure that the end user has no manual instructions to remove or install the UC864-E/G/WD /WDU module. Antennas used for this OEM module must not exceed 3dBi gain for mobile and fixed operating configurations.

4.4.4 Radio Test Environment

The antenna efficiency, antenna gain, radiation pattern, total radiated power (TRP), and TIS can be tested in a microwave testing chamber.

Huawei has a complete set of OTA test environment (SATIMO microwave testing chambers and ETS microwave testing chambers). The testing chambers are certified by professional organizations and are applicable to testing at frequencies ranging from 380 MHz to 6 GHz. The test items are described as follows:

Passive Tests

zAntenna efficiency

zGain

zPattern shape

zEnvelope correlation coefficient

Issue 01 (2010-12-31)

Huawei Proprietary and Confidential

24

Copyright © Huawei Technologies Co., Ltd.

 

 

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Huawei EM820W manual Radio Test Environment, Passive Tests

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.