HUAWEI ME909s Series LTE Mini PCIe Module
Hardware Guide
RF Specifications
Issue 02 (2016-09-07)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
40
The antenna consists of the antenna body and the relevant RF transmission cable. Take the
RF transmission cable into account when measuring any of the preceding antenna
indicators.
Huawei cooperates with various famous antenna suppliers who are able to make
suggestions on antenna design, for example, Amphenol, Skycross, etc.
4.5.2
Interference
Besides the antenna performance, the interference on the user board also affects the
radio performance (especially the TIS (Total Isotropic Sensitivity)) of the module. To
guarantee high performance of the module, the interference sources on the user
board must be properly controlled.
On the user board, there are various interference sources, such as the LCD, CPU,
audio circuits, and power supply. All the interference sources emit interference signals
that affect the normal operation of the module. For example, the module sensitivity
can be decreased due to interference signals. Therefore, during the design, you need
to consider how to reduce the effects of interference sources on the module. You can
take the following measures: Use an LCD with optimized performance; shield the LCD
interference signals; shield the signal cable of the board; or design filter circuits.
Huawei is able to make technical suggestions on radio performance improvement of
the module.
4.5.3
Antenna Requirements
The antenna for ME909s Mini PCIe module must fulfill the following requirements:
Antenna Requirements
Frequency range
Depending on frequency band (s) provided by the
network operator, the customer must use the most
suitable antenna for that/those band (s)
Bandwidth of primary
antenna
ME909s-821
250 MHz in UMTS Band 1; LTE Band 1
170 MHz in GSM 1800; LTE Band 3
70 MHz in UMTS Band 5;
80 MHz in GSM 900; UMTS Band 8; LTE Band 8
130 MHz in UMTS Band 9
50 MHz in LTE Band 38
40 MHz in LTE Band 39
100 MHz in LTE Band 40
194 MHz in LTE Band 41
15 MHz in TD-SCDMA Band 34
40 MHz in TD-SCDMA Band 39
ME909s-120
250 MHz in UMTS Band 1; LTE Band 1
140 MHz in GSM 1900; UMTS Band 2; LTE Band 2
170 MHz in GSM 1800; LTE Band 3