Cisco Systems AIR-ANT5959 User Manual
Cisco Aironet 2 dBi Diversity Omnidirectional
Ceiling Mount Antenna (AIR-ANT5959)
Overview
This document outlines the specificationsanddescriptionofthe2-dBidiversity omnidirectional ceiling
mount antenna. This antenna operates in the 2400 - 2500 MHz band and is designed for use where an
unobtrusive ceiling mounted antenna is required. The antenna is compatible with Cisco Aironet radio
products utilizing a reverse-polarity threaded naval connector (RP-TNC) connector.
Technical Specifications
Antenna type Omnidirectional
Operating frequency range 2.4 - 2.5 GHz
Nominal VSWR 1.7:1
Peak gain 2 dBi
Polarization Vertical, linear
Azimuth plane beamwidth Omnidirectional
Elevation plane 3 dB
beamwidth
Cable 3 ft (0.9 mm) plenum
Dimensions 5.3 x 2.8 x 0.9 in
Weight 0.3 lbs. (0.14 kg)
Connector type RP-TNC Male
Environment Indoor, ceiling mount
patch
74524
70 degrees
rated
(13.5 x 7.1 x 2.3 cm)
Corporate Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Copyright © 2002. Cisco Systems, Inc. All rights reserved.
System Requirements
E-Plane Pattern H-Plane Pattern
315
225
System Requirements
A 2.4-GHz Cisco device that utilizes a RP-TNC connector.
180
180
0
45
90270
135
74650
0
45
90270
135
74649
315
225
Installation Notes
Because antennas transmit and receive radio signals, they are susceptible to RF obstructions and
common sources of interference that can reduce throughput and range of the device to which they are
connected. Follow these guidelines to ensure the best possible performance:
• Mount the antenna toutilizeits propagation characteristics. A way to do this is to orient the antenna
horizontally as high as possible at or near the center of its coverage area.
Note The antenna must be mounted horizontally in order to maximize its omnidirectional propagation
characteristics. Mounting it vertically may noticeably decrease the antenna’s range and overall
performance.
• Keep the antenna away from metal obstructions such as heating and air-conditioning ducts, large
ceiling trusses, building superstructures, and major power cabling runs. If necessary, use a rigid
conduit to lower the antenna away from these obstructions.
• The density of the materials used in a building’s construction determines the number of walls the
signal must pass through and still maintain adequate coverage. Consider the following before
choosing the location to install your antenna:
–
Paper and vinyl walls have very little affect on signal penetration.
–
Solid and pre-cast concrete walls limit signal penetration to one or two walls without degrading
coverage.
Cisco Aironet 2 dBi Diversity Omnidirectional Ceiling Mount Antenna (AIR-ANT5959)
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Concrete and wood block walls limit signal penetration to three or four walls.
–
A signal can penetrate five or six walls constructed of drywall or wood.
–
A thick metal wall causes signals to reflect off, causing poor penetration.
–
A chain link fence or wire mesh spaced between 1 and 1 1/2 in. (2.5 and 3.8 cm) acts as a
harmonic reflector that blocks a 2.4 Ghz radio signal.
• Install the antenna away from microwave ovens and 2-GHz cordless phones. These products can
cause signal interference because they operate in the same frequency range as the device to which
your antenna is connected.
• Install the antenna horizontally to maximize signal propagation.
Installation Notes
This antenna is designed to be mounted indoors on a suspended ceiling track having either flush or
recessed mounted ceiling tiles.
Installation Notes
Safety Instructions
Follow these safety instructions when installing your antenna.
• Plan your installation procedure carefully and completely before you begin.
• If you are installing an antenna for the first time, for your own safety as well as others, seek
professional assistance. Consult your dealer, who can explain which mounting method to use for
the location where you intend to install the antenna.
• Select your installation site with safety, as well as performance, in mind. Remember that electric
power cables and telephone lines look alike. For your safety, assume that any line is an electric
power line until determined otherwise.
• Call your local power company or building maintenance organization if you are unsure about cables
close to your mounting location.
• When installing your antenna, do not use a metal ladder. Do dress properly - shoes with rubber soles
and heels, rubber gloves, and a long sleeved shirt or jacket.
• If an accident or emergency occurs with the power lines, call for qualified emergency help
immediately.
Installation Instructions
The following sections contain procedures for installing the antenna on a suspended ceiling.
Suspended Ceilings With Flush Mounted Tiles
The antenna is configured to mount to a suspended ceiling track with flush mounted tiles. No
modificationsarenecessary. After you have selected a suitable location, follow these steps to mount your
antenna. It may be helpful to examine the illustration below before you install the antennas.
Cisco Aironet 2 dBi Diversity Omnidirectional Ceiling Mount Antenna (AIR-ANT5959)
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