IFM Electronic ANT805 Manual de usuario

Operating instructions

RFID UHF antennas

Low range / ultra-low range

Mid range / short mid range

Wide range

ANT805

ANT810

ANT815

ANT820

ANT830

ANT910

ANT920

ANT930

706385 / 00 11 / 2014

RFID UHF antennas

Content

1 Preliminary note � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3

1�1 Symbols used� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3

2 Safety instructions � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3

2�1 General� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3

2�2 Target group � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3

2�3 Electrical connection � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4

2�4 Tampering with the device � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4

2�5 Environmental conditions � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4

3 Product description� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 5

3�1 Low-range antennas� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 5

3�2 Mid-range antennas � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 5

3�3 Wide-range antennas � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 6

3�4 Antenna type according to reading range and transponder shape� � � � � � � 7

4 Reading range and selectivity� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 9

4�1 Antenna allocation according to tag types � � � � � � � � � � � � � � � � � � � � � � � � � 9

4�2 Reading range � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 9

4�3 Selectivity � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 10

4�4 Selectivity and reading range of the low-range antennas � � � � � � � � � � � � 10

5 Conformity with standards � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 10

6 Installation� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 13

6�1 Installation location� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 13

6�2 Laying of cables � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 14

7 Typical applications� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 15

7�1 Pharmaceutical industry � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 15

7�2 Access systems � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 15

7�3 Automation industry � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 15

7�4 Other applications for mid-range antennas � � � � � � � � � � � � � � � � � � � � � � � 15

8 Abbreviations � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 16

9 Approvals � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 16

10 Maintenance, repair and disposal� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 16

RFID UHF antennas

1 Preliminary note

This document is intended for specialists� These specialists are people who are

qualified by their appropriate training and their experience to see risks and to

avoid possible hazards that may be caused during operation or maintenance of

the device� The document contains information about the correct handling of the

device�

Read this document before use to familiarise yourself with operating conditions,

installation and operation� Keep this document during the entire duration of use of

the device�

1.1 Symbols used

►Instructions

> Reaction, result

[…] Designation of keys, buttons or indications

→Cross-reference

Important note

Non-compliance may result in malfunction or interference�

Information

Supplementary note

2 Safety instructions

2.1 General

These instructions are an integral part of the device� They contain texts and figures

concerning the correct handling of the device and must be read before installation

or use�

Observe the operating instructions� Non-observance of the instructions, operation

which is not in accordance with use as prescribed below, wrong installation or

incorrect handling can seriously affect the safety of operators and machinery�

2.2 Target group

These instructions are intended for authorised persons according to the EMC and

low-voltage directives� The device must only be installed, connected and put into

operation by a qualified electrician�

RFID UHF antennas

2.3 Electrical connection

Disconnect the device externally before handling it�

The connection pins may only be supplied with the signals indicated in the

technical data and/or on the device label and only the approved accessories of ifm

may be connected�

2.4 Tampering with the device

In case of malfunctions or uncertainties please contact the manufacturer� Any

tampering with the device can seriously affect the safety of operators and

machinery� This is not permitted and leads to the exclusion of any liability and

warranty claims�

2.5 Environmental conditions

Do not place the device in the vicinity of heatings, do not expose it to direct sunlight

and do not operate it in wet environments� No objects with open flames must be

placed onto the device� Protect the device against moisture, falling water drops and

splashing water� Observe the environmental conditions indicated in the technical

data sheet�

There is a risk of fire in unsuitable environmental conditions�

RFID UHF antennas

3 Product description

The ifm RFID antennas consist of several UHF antennas which can meet the

requirements of almost any RFID application� The antennas are divided into three

product lines with regard to their reading range: low-range, mid-range and wide-

range antennas�

3.1 Low-range antennas

With dimensions of 90 x 63 mm the ANT810 / ANT910 low-range antennas have a

high field concentration in the near field and an extremely reduced antenna gain in

the far field� These features ensure that the antennas achieve ranges up to 10 cm

with a typical selectivity of 5 cm�

In addition to the low-range antennas there is the ANT805 ultra-low-range

antenna� The ultra-low-range antenna was designed to read dipole-shaped

tags ("far-field tags") at a very limited distance� This antenna can also activate

loop-shaped tags ("near-field tags") up to 3 cm� The low-range antennas were

developed for larger ranges so that they are in particular suitable for near-field

tags� The antenna allocation according to the reading range and tag shape is

outlined in chapter 3�4�

Figure: ANT805 ultra-low-range antenna,

ANT810 / ANT910 low-range antennas

3.2 Mid-range antennas

The ANT815 / ANT820 / ANT920 mid-range antennas were designed for

applications in the range between near and far field� Special importance was

placed on a compact design to ensure integration into space-limited environments�

With dimensions of 156 x 126 reading ranges of more than 2 m are nevertheless

possible� Mid-range antennas also have an increased selectivity at lower read

distances as compared to conventional antennas� That means the mid-range

antennas are suitable for use in the transition range with different tags�

RFID UHF antennas

Figure: ANT815 / ANT820 / ANT920 mid-range antenna

3.3 Wide-range antennas

For the conventional far-field applications with reading ranges up to 10 m ifm

offers the ANT830 / ANT930 wide-range antennas that are distinguished by a full

width at half maximum of 70°� The circular polarisation usually required for UHF

applications was significantly improved as compared to the antennas available on

the market� The new versions typically attain an axial ratio of 1 dB that is used as

reference for circular polarisation� The value common on the market, if specified at

all, is approx� 3 dB�

The improved circularity leads

to a considerably reduced

dependence of the read

results on the tag's position or

alignment� Great importance

was also placed on the front-

to-back ratio of the antennas

to reduce the influence of

the close environment on

the antenna properties� All

antennas have an extremely

high protection rating which

guarantees their use in any

industrial environment�

Figure: ANT830 / ANT930 wide-range antenna

RFID UHF antennas

3.4 Antenna type according to reading range and transponder shape

Antenna type Reading range Tag type

Loop Hybrid Dipole-type

ANT805 0-10 cm

ANT810

ANT910 0-10 cm

ANT815

0-10 cm

10-100 cm

ANT820

ANT920

10-30 cm

30-100 cm

> 100 cm

ANT830

ANT930

10-30 cm

30-200 cm

> 200 cm

The correct combination of antenna and tag is essential for every RFID

application� The correct selection ensures a high reading rate and reliable

operation of the system�

The low-range (ANT810/ANT910) and ultra-low-range antennas (ANT805) can

read the loop-shaped and dipole-type tags up to 10 cm and have a very well-

defined reading range�

The short-mid-range antenna (ANT815 ) can activate hybrid-type tags up to 10 cm

and dipole-type tags up to 100 cm�

The mid-range antennas (ANT820/ANT920) can activate loop-shaped tags up to

30 cm, the hybrid-type tags up to 100 cm and the dipole-type tags up to 2 m�

The wide-range antennas (ANT830/ANT930) can read loop-shaped tags up to

30 cm, the hybrid-type tags up to 200 cm and the dipole-type tags up to several

metres�

RFID UHF antennas

2 m

4 m

6 m

8 m

10 m

0 2 m

4 m

2 m 4 m

ANT830/ANT930 70° 33 ERP

ANT820/ANT920 100° 30 ERP

20 cm

40 cm

60 cm

80 cm

100 cm

0 20 cm

40 cm 20 cm 40 cm

ANT815 100° Pin = 30 dBm

ANT805/ANT810 100° 27 ERP

Operate the ifm UHF RFID antennas only with ifm UHF readers to ensure

best read and write results�

RFID UHF antennas

4 Reading range and selectivity

The reading range and the selectivity are the most important features of an RFID

application� The reading range describes the greatest distance at which a tag

can be read� The selectivity indicates the required minimum distance for clear

distinction between two adjacent tags�

The system features depend considerably on the tag type used� In general, the

UHF RFID tags can be divided into three groups�

Figure: Loop-shaped tag

The first group consists of loop-shaped tags that

couple magnetically with the antenna� These tags

have the smallest ranges since the magnetic field

decreases rapidly with the distance from the antenna�

The second group consists of hybrid-type tags which

are a mix of loop-shaped and dipole-type tags� These

tags can be activated by the antenna via the

magnetic field, the electric field or a combination of

both�

The third group is made up of dipole-type tags (far

field tags) which mostly couple via the electric field�

Ranges of more than 10 m are possible�

4.1 Antenna allocation according to tag types

The ANT805 ultra-low-range antenna was developed to meet the most challenging

demands with regard to range and selectivity of the tags from all three groups� It is

a universal antenna for many low-range applications� With this antenna very low

reading ranges below 10 cm and high selectivity with far-field tags are possible� It

can also read near-field tags at distances of up to 3 cm�

In order to significantly increase the read distance for near-field tags, the ANT810/

ANT910 low-range antenna was developed for reading ranges of 7

cm with

conventional loop-shaped tags�

The ANT805 ultra-low-range antenna is suited for all groups while the ANT810/

ANT910 low-range antenna is particularly suited for use with loop-shaped tags�

4.2 Reading range

In order to quantify the reading range of the ANT805 and ANT810/ANT910

antennas the figures below show the respective reading ranges for different tag

designs� The tags are aligned parallel to the antenna�

The ANT805 antenna has a very well-defined reading range for all tags� The

ANT810/ANT910 antennas are special solutions for near-field tags with a

considerably larger reading range than the ANT805 antennna�

Figure: Hybrid-type tag

Figure: Dipole-type tag

RFID UHF antennas

4.3 Selectivity

The high selectivity of the low-range antennas opens up a number of new UHF

RFID applications that could not be implemented previously� Both versions can

individually read tags with distances of partly less than 5 cm� They are therefore

the ideal antennas for item level tagging applications�

Figure: Low-range antenna reads tag at short

distance

Figure: Reading range and selectivity

Illustration

4.4 Selectivity and reading range of the low-range antennas

The table below lists the selectivity and reading ranges of the ultra-low-range and

low-range antennas�

Tag type ANT805 ultra-low range ANT810/ANT910 low range

Selectivity Reading range Selectivity Reading range

Loop-shaped

3 cm 2 cm 4 cm 4 cm

Hybrid-type

7 cm 5 cm - -

Dipole-type 10 cm 8 cm - -

Figure:

Selectivity and reading range of ANT805 / ANT810 / ANT910

5 Conformity with standards

Since the RFID systems are radio systems, they are in the scope of the 1999/5/EC

guideline of the European Commission (Radio and Telecommunications Terminal

Equipment R&TTE)�

Selectivity

Reading range

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