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HUAWEI EM820W HSPA+ PC Embedded Module
Hardware Guide RF Specifications
Issue 01 (2010-12-31)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
24
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
z
Antenna efficiency
z
Gain
z
Pattern shape
z
Envelope correlation coefficient