Cisco Cisco BPX 8680 8800 Series MGX-CESM-T3 E3 CESM Weißbuch
Wireless LAN Design Guide for High Density
Client Environments in Higher Education
25 © 2011 Cisco and/or its affiliates. All rights reserved.
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Table 8 features MIMO directional antenna products for Cisco 802.11n Series APs.
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One challenge often faced in a lecture hall or auditorium is the need to provide more bandwidth than a single use of the channels
available in 2.4 GHz will allow. Using a directional antenna can provide cell-to-cell isolation if placed, mounted, and adjusted
properly. One aspect of using directional antennas is the concept of mechanical downtilt. Downtilt involves adjusting the antenna
down to change the coverage pattern that is created.
available in 2.4 GHz will allow. Using a directional antenna can provide cell-to-cell isolation if placed, mounted, and adjusted
properly. One aspect of using directional antennas is the concept of mechanical downtilt. Downtilt involves adjusting the antenna
down to change the coverage pattern that is created.
The coverage pattern can be adjusted by changing the mounting height or the mechanical downtilt angle, Figure 12.
Normal Coverage
Less Sensitivity
FTB Ratio
HD-Coverage
Border Area between coverage and HD coverage