referred to as a "patch" antenna may be a better choice assuming the AP 2800e or AP 3800e is used. Instead,
use the AP 2800e or AP 3800e (with dipoles pointing vertical).
Figure 19: Correct orientation of dipole antennas when mounted on a vertical surface
Figure 20: Avoid wall mounting units with internal antennas
Cisco Aironet Series 2800/3800 Access Point Deployment Guide
19
Physical Hardware and Mounting Options
Wall-mounting the AP