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Siemens IK PI · 2015

Industrial Wireless Communication

IWLAN – Accessories

IWLAN antennas

■

Overview

Remote antennas increase the reliability of wireless links by

optimizing the receiving and emission of signals.

• Use in Industrial Wireless LAN (IWLAN) and WLAN in

accordance with IEEE 802.11 at 2.4 GHz and 5 GHz with

transmission rates of up to 450 Mbit/s

• Coordinated range of antennas for the most diverse applica-

tions both indoors and outdoors

• Antennas with two (dual-slant) or three (MIMO) connections

for increased data throughput and increased reliability of the

wireless connection thanks to selective use of multiple path

propagation

• Suitable for use in hazardous areas (Zone 2); no special

approvals necessary

■

Benefits

• Investment protection thanks to compliance with the globally

recognized standard IEEE 802.11 and – depending on the

version – suitability for 2.4 GHz and/or 5 GHz

• Cost-effective connection to devices in remote, difficult-to-

access, or hostile environments

• Establishment of a reliable IWLAN wireless infrastructure

through the use of remote antennas, even if the access points

and client modules are installed in the cabinet, for example

■

Application

Separate antennas optimize the transmission and receiving

conditions and support the use of IWLAN products in a number

of industrial applications.

With sector antennas, for example, conveyor lines or corridors

can be specifically covered with radio links, or strongly

directional antennas can be used to implement point-to-point

connections over distances of up to several 1 000 meters.

Alternatively, an omnidirectional antenna concentrates the radio

field around the antenna in the shape of a disc, which enhances

the quality of the connection.

Antennas with two or three connections enable transmission of

the two to three streams usual with IEEE 802.11n, using just one

antenna. They are available both with omnidirectional and

directional characteristics.

Application examples:

Omnidirectional antennas

• Coverage of an area which has at its center a pole for

mounting the antenna

• Installation of the antenna on the roof in the case of automated

guided vehicle systems for reliable data exchange with the

vehicles

• Wide-area coverage of a production cell or robot station

Sector antennas

• Selective coverage of warehouse/high-bay warehouse aisles

with the help of a wide-angle antenna prevents interference

with neighboring wireless fields

Directional antennas

• Communication between buildings over long distances with

the help of an antenna with narrow opening angle and high

gain

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