Effects of polarization loss factor, form factors and reader transmitting power on the range of paper and plastic UHF tags in a free and metallic environment

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2 Citations (Scopus)

Abstract

Passive RFID has come to dominate all facets of modern life and thereby making auto-identification a daily occurrence in our daily activities. From the complex application of nuclear waste tracking to supply chain management, RFID passive tags have come under various form factors ranging from paper to plastic tags. What determines what form factor to be used and best angle between the tag and the reader is analyzed in this paper. The objective of this paper is to determine the effects of reader transmitted power, form factors and as well as cross and linear polarization on ultra high frequency (UHF) passive tags in a free and metallic environment as seen in real life environment not a controlled environment. The settings of this experiment were based on real life environment where RFID tags are deployed. Rotor which has the capacity to change every 45° was used to position the tag in different angles to enable readings to be taken in the ranges of 0, 45, and 90, 135, 180 clockwise and same angles in anticlockwise. Results have shown "paper" tags tend to be affected less in all these factors than the plastic tags and also, it was discovered that at lower power of -2 dB, the tags read more than the maximum power of 0 dB. The maximum distance of paper tag was also noticed to read more close to 100 cm in metallic environment while in free environment, the read distance of paper tags are limited to 80 cm. In this paper, it has been able to prove the existence of read range deterioration in RFID tags when they are in direct contact with metals whereas, it increases in the presence of metals. Also, the existence of polarization loss factor (PLF) has been proved beyond any reasonable doubt.

Original languageEnglish
Pages (from-to)2776-2781
Number of pages6
JournalInternational Journal of Physical Sciences
Volume6
Issue number12
Publication statusPublished - Jun 2011

Fingerprint

ultrahigh frequencies
readers
Radio frequency identification (RFID)
form factors
plastics
Polarization
Plastics
polarization
Metals
Radioactive Waste
Supply chain management
Radioactive wastes
Deterioration
Rotors
cross polarization
radioactive wastes
linear polarization
deterioration
metals
rotors

Keywords

  • Cross polarization
  • E and H fields
  • Polarization loss factor
  • Radiation pattern

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Electronic, Optical and Magnetic Materials

Cite this

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abstract = "Passive RFID has come to dominate all facets of modern life and thereby making auto-identification a daily occurrence in our daily activities. From the complex application of nuclear waste tracking to supply chain management, RFID passive tags have come under various form factors ranging from paper to plastic tags. What determines what form factor to be used and best angle between the tag and the reader is analyzed in this paper. The objective of this paper is to determine the effects of reader transmitted power, form factors and as well as cross and linear polarization on ultra high frequency (UHF) passive tags in a free and metallic environment as seen in real life environment not a controlled environment. The settings of this experiment were based on real life environment where RFID tags are deployed. Rotor which has the capacity to change every 45° was used to position the tag in different angles to enable readings to be taken in the ranges of 0, 45, and 90, 135, 180 clockwise and same angles in anticlockwise. Results have shown {"}paper{"} tags tend to be affected less in all these factors than the plastic tags and also, it was discovered that at lower power of -2 dB, the tags read more than the maximum power of 0 dB. The maximum distance of paper tag was also noticed to read more close to 100 cm in metallic environment while in free environment, the read distance of paper tags are limited to 80 cm. In this paper, it has been able to prove the existence of read range deterioration in RFID tags when they are in direct contact with metals whereas, it increases in the presence of metals. Also, the existence of polarization loss factor (PLF) has been proved beyond any reasonable doubt.",
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N2 - Passive RFID has come to dominate all facets of modern life and thereby making auto-identification a daily occurrence in our daily activities. From the complex application of nuclear waste tracking to supply chain management, RFID passive tags have come under various form factors ranging from paper to plastic tags. What determines what form factor to be used and best angle between the tag and the reader is analyzed in this paper. The objective of this paper is to determine the effects of reader transmitted power, form factors and as well as cross and linear polarization on ultra high frequency (UHF) passive tags in a free and metallic environment as seen in real life environment not a controlled environment. The settings of this experiment were based on real life environment where RFID tags are deployed. Rotor which has the capacity to change every 45° was used to position the tag in different angles to enable readings to be taken in the ranges of 0, 45, and 90, 135, 180 clockwise and same angles in anticlockwise. Results have shown "paper" tags tend to be affected less in all these factors than the plastic tags and also, it was discovered that at lower power of -2 dB, the tags read more than the maximum power of 0 dB. The maximum distance of paper tag was also noticed to read more close to 100 cm in metallic environment while in free environment, the read distance of paper tags are limited to 80 cm. In this paper, it has been able to prove the existence of read range deterioration in RFID tags when they are in direct contact with metals whereas, it increases in the presence of metals. Also, the existence of polarization loss factor (PLF) has been proved beyond any reasonable doubt.

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