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.
41
Antenna Requirements
445 MHz in LTE Band 4
70 MHz in GSM 850; UMTS Band 5; LTE Band 5
190MHz in LTE Band 7
80 MHz in GSM 900; UMTS Band 8; LTE Band 8
71 MHz in LTE Band 20
Bandwidth of
secondary antenna
ME909s-821
60 MHz in UMTS Band 1; LTE Band 1
75 MHz in LTE Band 3
25 MHz in UMTS Band 5
35 MHz in UMTS Band 8; LTE Band 8
30 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
ME909s-120
60 MHz in UMTS Band 1; LTE Band 1
60 MHz in UMTS Band 2; LTE Band 2
75 MHz in LTE Band 3
45 MHz in LTE Band 4
25 MHz in UMTS Band 5; LTE Band 5
70 MHz in LTE Band 7
35 MHz in UMTS Band 8; LTE Band 8
30 MHz in LTE Band 20
Gain
≤ 2.5 dBi
Impedance
50
Ω
VSWR absolute max
≤ 3:1
VSWR recommended
≤ 2:1
4.6 Suggestions about LTE and 2.4 GHz Wi-Fi Co-existence
4.6.1
Theory Analysis
The band gap between LTE Band 38/40/41 and Wi-Fi (2.4 G) is very narrow just as
shown as below.