Руководство По Проектированию для Cisco Cisco Aironet 350 Mini-PCI Wireless LAN Client Adapter
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Enterprise Mobility 4.1 Design Guide
OL-14435-01
Chapter 3 WLAN Radio Frequency Design Considerations
Planning for RF Deployment
Figure 3-11
Patch Wall Mount Antenna Horizontal Plane
For more information on antenna selection, see the Cisco Antenna Selection Guide at the following URL:
Security Policy Requirements
A good RF design can effectively minimize unintended RF radiation in areas not requiring coverage. For
example, if WLAN coverage is required only in buildings and not outside, then the amount of RF
coverage outside of the buildings can be minimized by using the correct power setting, AP placement
and directional antennas pointing inwards towards the center of the building or areas. By tuning RF
transmit levels and using the correct antenna for the coverage area, you can reduce the amount of RF
that radiates outside the buildings to decrease the security exposure. This can reduce the exposure of
wireless network to hackers outside the building or coverage area, and avoid a compromise of the
wireless network.
example, if WLAN coverage is required only in buildings and not outside, then the amount of RF
coverage outside of the buildings can be minimized by using the correct power setting, AP placement
and directional antennas pointing inwards towards the center of the building or areas. By tuning RF
transmit levels and using the correct antenna for the coverage area, you can reduce the amount of RF
that radiates outside the buildings to decrease the security exposure. This can reduce the exposure of
wireless network to hackers outside the building or coverage area, and avoid a compromise of the
wireless network.
RF Environment
The performance of the WLAN and its equipment depends on its RF environment, equipment, selection,
coverage design, quality of audits, configurations, and quality of deployment. The following are some
examples of adverse environmental variables that can disrupt wireless communications by either
providing interference on the channel or in some way changing the RF characteristics of the signal:
coverage design, quality of audits, configurations, and quality of deployment. The following are some
examples of adverse environmental variables that can disrupt wireless communications by either
providing interference on the channel or in some way changing the RF characteristics of the signal:
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