Huawei ME909 Series - Antenna Design Requirements

HUAWEI ME909 Series LTE LGA Module
Hardware Guide
RF Specifications
Issue V0.3 (2013-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
44
Item
3GPP Protocol
Claim (dBm)
ME909u-521 Test Value (dBm)
Min.
Typ.
Max.
WCDMA Band VIII
21 to 25
TBD
TBD
TBD
LTE Band I
21 to 25
TBD
TBD
TBD
LTE Band II
21 to 25
TBD
TBD
TBD
LTE Band III
21 to 25
TBD
TBD
TBD
LTE Band V
21 to 25
TBD
TBD
TBD
LTE Band VIII
21 to 25
TBD
TBD
TBD
LTE Band VII
21 to 25
TBD
TBD
TBD
LTE Band XX
21 to 25
TBD
TBD
TBD
Maximum Power Reduction (MPR) of LTE is according to 3GPP TS 36.521-1 as below.
Modulation
RB Allocation
MPR(dB)
QPSK
≥ 1 RB, ≤ Partial RB
0
QPSK
> Partial RB
≤ 1
16QAM
≥ 1 RB, ≤ Partial RB
≤ 1
16QAM
> Partial RB
≤ 2
4.5 Antenna Design Requirements
4.5.1 Antenna Design Indicators
Antenna Efficiency
Antenna efficiency is the ratio of the input power to the radiated or received power of
an antenna. The radiated power of an antenna is always lower than the input power
due to the following antenna losses: return loss, material loss, and coupling loss. The
efficiency of an antenna relates to its electrical dimensions. To be specific, the
antenna efficiency increases with the electrical dimensions. In addition, the
transmission cable from the antenna port of ME909 to the antenna is also part of the
antenna. The cable loss increases with the cable length and the frequency. It is
recommended that the cable loss is as low as possible, for example, MXHP32HP1000
made by Murata or equivalent.