Allied Telesis AT-WA7500 Guida utente

Antenna and Cable

Application Guide for the

AT-WA7500 and

AT-WL2411 Access Points

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PN 613-50537-00 Rev A 1

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PN 613-50537-00 Rev A 2

Table of Contents

Introduction 4

Regulatory Concerns 4

Basic Antenna Concepts 6

Radiation Patterns of Various Antennas 6

Typical Installations

Direct Connection Antenna Circuits 7

Direct Connection Antenna Connection 7

Antenna Circuits with Splitter 7

Antenna Circuits with Splitter and Lightning Suppressors 9

Plenum Cable Cross Reference 10

Cable Assemblies

AT-INT067265-00 - TNC Plug / N Receptacle, 12 inch 11

AT-INT67266-00 - TNC Plug / N Plug, 24 inch 12

AT-INT071178-00 - TNC Plug / N Plug, 12 feet 12

AT-INT072822-00 - TNC Plug/ N Plug, 24 inch 12

AT-INT072823-00 - TNC Plug/ N Plug, 12 feet 12

AT-INT064616-00 - N Plug / N Plug, 30 inch 13

AT-INT063245-00 - N Plug / N Plug, 60 inch 13

AT-INT063246-00 - N Plug / N Plug, 20 feet 13

AT-INT71179-00 - N Plug / N Plug, 30 feet 13

AT-INT072824-00 - N Plug / N Plug, 30 inch 13

AT-INT072825-00 - N Plug / N Plug, 5 feet 13

AT-INT072826-00 - N Plug / N Plug, 20 feet 13

AT-INT072827-00 - N Plug / N Plug, 30 feet 13

AT-INT069886-00 - MMCX / N Receptacle 14

AT-INT069887-00 - Radiall (Lucent) / N Receptacle 15

AT-INT070402-00 - MMCX / N Plug 16

AT-INT070403-00 - Radiall (Lucent) / N Plug 17

Antennas

2.4 GHz 18-33

2.4 GHz Antennas

AT-INT63363-00 - Antenna, 2.4 GHz, Omni 18

AT-INT063365-00 - Antenna, 2.4 GHz, Yagi 19

AT-INT63366-00 - Antenna, 2.4 GHz, Flat Panel 20

AT-INT065349-00 - Antenna, 2.4 GHz, 9DBI, Omni 21

AT-INT066147-00 - Antenna, TNC, 2.4 GHz, Dipole 22

AT-INT067261-00 - Antenna, 2.4 GHz, 3DBI, Mini Omni

(N Recept Conn) 23, 24

AT-INT070140-00 - Antenna, 2.4 GHz, 3DBI,

Mini Omni (MMCX Conn) 23, 25

AT-INT070141-00 - Antenna, 2.4 GHz, 3DBI,

Mini Omni, (Radiall Conn) 23, 26

AT-INT067262-00 - Antenna, 2.4 GHz, 5DBI, Dual Flat Panel 27

______________________________________________________________________________________

PN 613-50537-00 Rev A 3

Table of Contents (cont.)

AT-INT067263-00 - Antenna, 2.4 GHz, 9DBI, Flat Panel 28

AT-INT067263-00 - Rear View 29

AT-INT71121-00 - Antenna, 2.4 GHz, Diversity, 3DBI 31

AT-INT71122-00 - Antenna, 2.4 GHz, Corner Reflect 32

AT-INT71488-00 - Diversity Antenna, 2.4 GHz (MMCX Conn) 33

AT-INT71489-00 - Diversity Antenna, 2.4 GHz (Radiall Conn) 33

N Receptacle used on various antennas 25

5.25 – 5.35 GHz (Mid-Band) 34-38

AT-INT072730-00 - Antenna, 5.25 – 5.35 GHz, Omni,

Swivel TNC, 4 DBI 34

AT-INT072759-00 - Antenna, 5.25 – 5.35 GHz, Omni, 6 DBI 35

AT-INT072760-00 - Antenna, 5.25 – 5.35 GHz, Omni, 9 DBI 36

AT-INT072761-00 - Antenna, 5.25 – 5.35 GHz, Omni, 3 DBI,

Ceiling Mount 37

AT-INT072762-00 - Antenna, 5.25 – 5.35 GHz, Corner Reflect 38

Accessories

AT-INT069888-00 - Kit, Bracket, Mounting, Antenna 39

AT-INT069893-00 - Kit, Power Supply Holder 40

AT-INT061868-00 - Lightning Suppressor 40

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PN 613-50537-00 Rev A 4

Introduction

The purpose of this document is to provide Allied Telesyn, Inc. personnel a tool which will enable them to

better understand how the various Allied Telesyn antennas, cable assemblies, and accessories blend

together.

Regulatory Concerns

Note: The information below will help you to understand some of the regulatory issues surrounding the

use of antenna, antenna circuits, and radios. However, it is critical to remember that all antennas must be

approved and certified before they can be used with radio (RF) equipment purchased from Allied Telesyn.

FCC

FCC requirements limit the total output power of a wireless LAN system operating in 2.4 GHz frequency

ranges to 4 Watts. This limit is expressed in EIRP, which stand for “Effective Isotropically Radiated

Power.” This is the total power created by the transmitter and gain generated by the antenna, minus any

loss due to cabling and connections. Given this 4W (4000 mW) maximum, the EIRP must not exceed

36dBi.

ETSI

ETSI requirements limit the total output power of a 2.4 GHz wireless LAN system to 0.1 Watt (100 mW).

Given this 100 mW maximum, the EIRP must not exceed 20dBm. Most European countries such as France

and Italy operate under a lower power directive, which limits them to a maximum output limit of 10 mW.

Non-ETSI & Non-FCC Countries

Electromagnetic-transmission regulations are mandated by each country’s own governing body. Many

countries follow the directives issued by ETSI or the FCC but others create their own regulations.

Before adding radios or antennas to a RF system, please consult a certified Allied

Telesyn Systems Consultant operating in the country where the system will be used.

______________________________________________________________________________________

PN 613-50537-00 Rev A 5

Basic Antenna Concepts

Antennas and Power

Antennas do not increase nor decrease the power applied to them. They can only transmit or receive the

amount of power that is applied to them. It is possible to have some power loss before or after the signal

leaves the antenna. An example of this is “line loss: which is a decrease in power due to imperfect

connections and imperfect conductivity to cabling materials. It is, however, possible to increase the power

output in a certain direction. But the total power emitted will always be the same as the amount applied to

the antenna minus the amount lost due to line loss, ohmic loss, reflection loss etc…

dBi – (decibels relative to an isotropic {spherical} radiation pattern)

An isotropic antenna is a theoretical antenna that radiates in the shape of a perfect sphere.

dBm – (decibels relative to one milliwatt)

dBm is a commonly used unit of measurement in the RF industry that expresses radio frequency power

relative to a 1 mW point of reference.

dBd – (decibels relative to a ½ wave dipole antenna)

dBd is gain with respect to a ½ wave dipole antenna. Some commercial antenna companies use dBd to rate

their antennas.

EIRP – (Effective isotropically radiated power)

The mathematical product of (1) the power supplied to the antenna and (2) its gain.

Gain

Gain is given in dB (decibels). If an “I” is added as in 3dBi, this rating is relative to an “isotropic” antenna.

An isotropic antenna is a theoretical antenna that radiates in the shape of a perfect sphere. If a “d” is added

as in 3dBd, this rating is relative to a “dipole” antenna. A dipole antenna with a rating of 2.14dB is

equivalent to a 0dBd antenna.

Line-of-sight

This refers to the fact that some electromagnetic wave frequencies require a clear line of sight between

transmitter and receiver. This is largely because higher frequency electromagnetic waves, such as those in

the 2.4 GHz range, do not bend around or penetrate objects as well as some lower frequency signals.

Multipath, Reflection, or Physical Interference

Because of the electromagnetic properties of waves used to transmit data, large metal objects in the

immediate transmission path of the antenna will likely cause distortion of the signal and should therefore be

avoided.

Omnidirectional

An omnidirectional antenna radiates evenly horizontally around the antenna in a plane parallel to the earth.

These antennas do not always radiate evenly vertically around the antenna in a plane perpendicular to the

earth. By giving up vertical coverage, above and or below the antenna and refocusing that signal around

the antenna, it is possible to achieve gain with an omnidirectional antenna.

Omni-gain

Wavelength and operating frequency determine the size of the antenna. By using a longer antenna, you do

not achieve greater overall coverage, but you can achieve greater distance in a focused direction. For

example, omnidirectional antennas with gain achieve some measure of gain in the horizontal plane.

adiation Patters of Various Antennas

mnidirectional:

ircular patter in open spaces

ange is slightly effected by antenna gain but the radiation pattern will

emain relatively circular.

lat Panel:

odest directional coverage with a slight backlobe

he main lobe of the radiation pattern can be from almost circular to fairly

blong in shape. Good for slightly directional coverage such as down

orridor or away from walls.

ual Flat Panel:

i-directional coverage

ood for transmission down two opposing directions of a corridor.

irectionalYAGI (High Gain):

ighly focused signal.

ood for wireless bridging or very specialized coverage.

here must always be a tradeoff between gain and coverage area. As can be

een in the radiation patterns presented, the higher the gain (directional

istance) as with theYagi antenna, the narrower the coverage.And

onversely, the lower the gain, the more universal the coverage about the

ntenna's axis.

Antenna patterns are 3

dimensional. The radiation

patterns (above) are views

of the azimuth plain, which

is a top down view.

______________________________________________________________________________________

PN 613-50537-00 Rev A 6

WA7500

Direct ConnectionAntenna Circuit

AnyAlliedTelesyn 2.4 GHz, or 5.3 GHz (Mid-Band)

Antenna with N Receptacle Connector

WA7500

067266 - Cable - 2' (61cm) -- New Part #:AT-INT67266-00

071178 - Cable - 12" (366cm) -- New Part #: AT-INT71178-00

*See Table on page 12 for plenum cable cross reference.

.4 GHz and 5.3 GHz (Mid-Band).

WL2411

Connection Antenna Circuit

WL2411

Any AlliedTelesyn 2.4 GHz Antenna

with N Receptacle Connector

070402 - Cable - MMCX -- New Part #: AT-INT70402-00

070403 - Cable - Radiall -- New Part #: AT-INT70403-00

069888 - Kit, Bracket, Mtg -- New Part #:AT-INT6988-00

070140 - Antenna, 3dBi Mini Omni, MMCX -- New Part #:AT-INT70140-00

070141 - Antenna, 3dBi Mini Omni, Radiall (Lucent) -- New Part #:AT-INT70141-

071488 - Diversity Antenna, MMCX -- New Part #:AT-INT71488-00

071489 - Diversity Antenna, Radiall (Lucent) -- New Part #:AT-INT71489-00

______________________________________________________________________________________

PN 613-50537-00 Rev A 7

WA7500

Direct Circuit with Splitter

Any AlliedTelesyn 2.4 GHz, or 5.3 GHz (Mid-Band)

Antenna with N Receptacle Connector

WA7500

WA7500 Support

2.4 GHz and 5.3GHz (Mid-Band).

Splitter

AT-INT63198-00 - Splitter, 2.4 GHz

AT-INT67265-00 - Adapter cable

1' (30cm)

AT-INT064616-00 - Cable - 2.5' (76cm)

AT-INT063245-00 - Cable - 5' (152cm)

AT-INT063246-00 - Cable - 20' (610cm)

AT-INT71179-00 - Cable - 30' (914cm)

AT-INT064616-00 - Cable - 2.5' (76cm)

AT-INT063245-00 - Cable - 5' (152cm)

AT-INT063246-00 - Cable - 20' (610cm)

AT-INT71179-00 - Cable - 30' (914cm)

* See Table on page 12 for plenum cable cross reference

WL2411 2.4 GHz Antenna

Circuit with Splitter

WL2411

Any AlliedTelesyn 2.4 GHz Antenna

with N Receptacle Connector

Splitter

AT-INT064616-00 - Cable - 2.5' (76cm)

AT-INT063245-00 - Cable - 5' (152cm)

AT-INT063246-00 - Cable - 20' (610cm)

AT-INT71179-00 - Cable - 30' (914cm)

AT-INT064616-00 - Cable - 2.5' (76cm)

AT-INT063245-00 - Cable - 5' (152cm)

AT-INT063246-00 - Cable - 20' (610cm)

AT-INT71179-00 - Cable - 30' (914cm)

AT-INT63198-00 - Splitter, 2.4 GHz

AT-INT069886-00 - Cable - MMCX

AT-INT069887-00 - Cable - Radiall

AT-INT069888-00 - Kit, Bracket, Mtg

______________________________________________________________________________________

PN 613-50537-00 Rev A 8

______________________________________________________________________________________

PN 613-50537-00 Rev A 9

WA7500

2.4 GHz / 5.3 GHz (Mid-Band)

Antenna Circuit with Splitter and Lightning Arrestor

Any AlliedTelesyn 2.4 GHz, or 5.3 GHz (Mid-Band)

Antenna with N Receptacle Connector

WA7500

WA7500 Support

2.4 GHz and 5.3 GHz (Mid-Band).

Splitter

AT-INT63198-00 - Splitter, 2.4 GHz

AT-INT67265-00 - Adapter cable

1' (30cm)

AT-INT064616-00 - Cable - 2.5' (76cm)

AT-INT063245-00 - Cable - 5' (152cm)

AT-INT063246-00 - Cable - 20' (610cm)

AT-INT71179-00 - Cable - 30' (914cm)

AT-INT064616-00 - Cable - 2.5' (76cm)

AT-INT063245-00 - Cable - 5' (152cm)

AT-INT063246-00 - Cable - 20' (610cm)

AT-INT71179-00 - Cable - 30' (914cm)

AT-INT064616-00 - Cable - 2.5' (76cm)

AT-INT063245-00 - Cable - 5' (152cm)

AT-INT063246-00 - Cable - 20' (610cm)

AT-INT71179-00 - Cable - 30' (914cm)

AT-INT61868-00 - Lightning Suppressor

AT-INT58661-00 - Capsule

* See Table on page 12 for plenum cable cross reference

2101 / 2102 2.4 GHz Antenna Circuit

with Splitter and Lightning Suppressor

WL2411

Any AlliedTelesyn 2.4 GHz Antenna

with N Receptacle Connector

Splitter

AT-INT064616-00 - Cable - 2.5' (76cm)

AT-INT063245-00 - Cable - 5' (152cm)

AT-INT063246-00 - Cable - 20' (610cm)

AT-INT71179-00 - Cable - 30' (914cm)

AT-INT064616-00 - Cable - 2.5' (76cm)

AT-INT063245-00 - Cable - 5' (152cm)

AT-INT063246-00 - Cable - 20' (610cm)

AT-INT71179-00 - Cable - 30' (914cm)

AT-INT63198-00 - Splitter, 2.4 GHz

AT-INT069886-00 - Cable - MMCX

AT-INT069887-00 - Cable - Radiall

AT-INT069888-00 - Kit, Bracket, Mtg

AT-INT61868-00 - Lightning Suppressor

AT-INT58661-00 - Capsule

AT-INT064616-00 - Cable - 2.5' (76cm)

AT-INT063245-00 - Cable - 5' (152cm)

AT-INT063246-00 - Cable - 20' (610cm)

AT-INT71179-00 - Cable - 30' (914cm)

______________________________________________________________________________________

PN 613-50537-00 Rev A 10

Plenum Cable Cross Reference

Description Plenum Cable Assembly Part

Number Cable Assembly

Length

TNC Plug / N

Receptacle AT-INT072821-00 12 Inches

TNC Plug / N Plug AT-INT072822-00 24 Inches

TNC Plug / N Plug AT-INT072823-00 12 Feet

N Plug / N Plug AT-INT072824-00 30 Inches

N Plug / N Plug AT-INT072825-00 5 Feet

N Plug / N Plug AT-INT072826-00 20 Feet

N Plug / N Plug AT-INT072827-00 30 Feet

* Recommended cable assembly for plenum applications

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