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Summary of Contents for IFM Efector 190 ANT820
- Page 1 Short instructions RFID-UHF-Antenna Mid Range ANT820...
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Page 2: Table Of Contents
RFID-UHF-Antennas Inhalt 1 Preliminary note � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3 2 General safety notes�... -
Page 3: Preliminary Note
RFID-UHF-Antennas 1 Preliminary note Read this document before use to familiarise yourself with operating conditions, installation and operation� Keep the document during the entire duration of use of the device� Adhere to the safety instructions� 2 General safety notes Before starting installation work or replacing the unit, the accompanying applica- tion notes must be read carefully and the content understood�... -
Page 4: Product Description
RFID-UHF-Antennas 3 Product description The ifm electronic antenna range includes a variety of UHF reader antennas, which can fulfil the requirements of almost all RFID applications� The antennas are divided into three product lines according to read range: low range, mid range and wide range antennas�... -
Page 5: 3�3 Wide Range Antennas
Figure: ANT820 Mid Range Antenna 3.3 Wide range antennas For traditional wide-range applications with read ranges of over 10 m, ifm elec- tronic offers a wide range antenna model characterised by a half width of 70° (ANT830)� The circular polarization usually required for UHF applications has been significantly improved compared with other antennas available on the market�... -
Page 6: 3�4 Antenna Type According To Read Range And Transponder Shape
RFID-UHF-Antennas 3.4 Antenna type according to read range and transponder shape Antenna type Read range Tag type Loop tag Hybrid Dipole tag ANT805 ANT810 0-10 cm ANT910 10-30 cm ANT820 30-100 cm > 100 cm 10-30 cm ANT830 30-200 cm >... - Page 7 ANT830 70° 33 ERP ANT820 100° 27 ERP ANT805/ANT810 Figure: Read ranges of the RFID-UHF-Antennas To achieve the best reading and writing results, we recommend operating the ifm UHF RFID reader antennas exclusively with UHF readers from ifm electronic�...
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Page 8: Technical Data
RFID-UHF-Antennas 4 Technical Data Typ Nr� ANT820 Frequency range 865-870 Antenna gain dBic Polarisation Right-hand circular (RHC) VSWR < 1,3 : 1 Impedance Ω Front-to-back ratio > 10 Max� radiated power W ERP (ETSI EN 302 208) Far-field divergence ° Connection TNC socket Protection class... - Page 9 RFID-UHF-Antennas Frequency [MHz] Figure: Circular antenna gain against frequency Figure: Directional characteristic in azimuth (RHC)
- Page 10 RFID-UHF-Antennas Frequenz [MHz] Figure: Matching S11...
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Page 11: Reader Output Power
RFID-UHF-Antennas 5 Reader output power The maximum output power for the reader is defined by the ETSI standard EN 302 208-1 V1�2�1 (dated April 2008)� It is defined by the antenna gain, the half power beam width and the cable attenuation on the reader - antenna connection� For antennas with a half power beam width of up to 70°... -
Page 12: Compliance With Standards
European Union� The ifm antenna ANT820 is a passive antenna structure� It is therefore the system integrator who is responsible for ensuring compliance with the standards – i�e� the person who combines the individual components of an RFID system with each other, in particular the reader and antennas�... - Page 13 RFID-UHF-Antennas The table below shows the maximum input powers with which the antenna can be supplied to ensure that the basic limit values for the SAR are not exceeded� A dif- ference is made here between the different types of exposure� Maximum input power ANT805 Distance Distance...
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Page 14: Installation / Attachment
RFID-UHF-Antennas 7 Installation / Attachment To achieve the maximum range with the antenna, there must not be any interfering objects between the antenna and the tag to be read� The function of the antenna is affected by the type of fixing and the surrounding materials� For optimum antenna behaviour there should not be any conducting objects in the vicinity of the antenna�... - Page 15 RFID-UHF-Antennas The cable should be laid vertical (see figure below right) away from the antenna and should be laid direct� The cable length is to be selected as short as possible to minimise cable losses� Cable loops around the antenna or laying the cable in front of the antenna (see figure below left) are to be avoided�...
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Page 16: Typical Applications
RFID-UHF-Antennas 8 Typical applications ● Logistics applications on attachment to industrial trucks ● Conveyor system applications ● Gate applications for article identification ● Bulk tag and single tag applications ● Access systems (e�g� ski lift, control systems for travel tickets and admission tickets) When using the antennas, comply with the relevant valid regulations in your country and any standards and guidelines valid specifically for the area or... -
Page 17: Technical Appendix
RFID-UHF-Antennas 9 Technical appendix 9.1 Antenna gain The gain is the ratio between the radiated power density in the main radiation di- rection for the antenna in question and a reference antenna with the same supply power� Reference antennas are isotropic radiators or λ/2 – dipole Frequent logarithmic tasks: dBi: linear gain based on isotropic radiator... -
Page 18: 9�2 Erp: Effective Radiated Power
RFID-UHF-Antennas The isotropic radiator is a loss-free point radiator with an even spherical radiation pattern in all directions� Its power density is distributed evenly over a sphere with a surface of 4π²r, where r is the radius of the sphere. The gain of the λ/2 –... -
Page 19: Abbreviations
RFID-UHF-Antennas USA: EIRP power is limited according to FCC Part 15 to 4 W (36 dBm)� 1� Antenna gain smaller or equal to 6 dBi Antenna input power is equal to 30 dBm (1 W) 2� Antenna gain larger than 6 dBi (e�g� 7 dBi) Antenna input power must be reduced: 36 dBm –...
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