HUAWEI EM820W HSPA+ PC Embedded Module
Hardware Guide
RF Specifications
Issue 01 (2010-12-09)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
25
Figure 4-1
SATIMO microwave testing chamber
4.5 Design Recommendations
Recommendations for Designing the Module Antennas
The design recommendations are as follows:
z
It is recommended that the module antennas are designed at the upper edge,
left edge, or right edge of the laptop screen. Designing the antenna at the upper
edge is better.
z
Take the isolation and envelope correlation between
the master antenna and
the slave antenna
into account when designing the antennas. Keep
the slave
antenna away
from
the master antenna
as far as possible. Install the slave
antenna perpendicularly to the master slave. See Figure 4-2, Install the master
and slave antennas in positions 1 and 3 or 2 and 4 but not in positions 1 and 2 or
3 and 4.