Huawei ME909s Series - Antenna Design Requirements

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.
37
Table 4-6 ME909s-120 Mini PCIe module conducted Tx power
Band
Typical Value (Unit: dBm)
Note (Unit: dB)
GSM 850
GMSK (1Tx Slot)
32.5
±1.5
8PSK (1Tx Slot)
27
±1.5
GSM 900
GMSK (1Tx Slot)
32.5
±1.5
8PSK (1Tx Slot)
27
±1.5
GSM 1800
GMSK (1Tx Slot)
29.5
±1.5
8PSK (1Tx Slot)
26
±1.5
GSM 1900
GMSK (1Tx Slot)
29.5
±1.5
8PSK (1Tx Slot)
26
±1.5
WCDMA Band 1
23.5
±1.5
WCDMA Band 2
23.5
±1.5
WCDMA Band 5
23.5
±1.5
WCDMA Band 8
23.5
±1.5
LTE Band 1
23
±2
LTE Band 2
23
±2
LTE Band 3
23
±2
LTE Band 4
23
±2
LTE Band 5
23
±2
LTE Band 7
23
±2
LTE Band 8
23
±2
LTE Band 20
23
±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 connector of PCIe Adapter to the antenna is also