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A Paper-Based Screen Printed HF RFID Reader Antenna System
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för elektronikkonstruktion. (Printed Electronics)ORCID-id: 0000-0002-1125-1150
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för elektronikkonstruktion. (Printed Electronics)
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för elektronikkonstruktion. (Printed Electronics)ORCID-id: 0000-0003-2965-0288
Atlas Industrial Print i Motala AB.
2018 (engelsk)Inngår i: IEEE Journal of Radio Frequency Identification, ISSN 2469-729X, Vol. 2, nr 3, s. 118-126Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Screen printing is a stencil process where conductive inks are patterned onto substrates through a fine mesh of threads. Nowadays, screen printing can be used to print RFID antenna structures onto flexible and ultra-low-cost substrates such as pa-per. In this manuscript, we present an HF RFID reader antenna system, operating at 13.56 MHz, using screen printed Ag particle ink as conductor and using HP photo paper as substrate. The proposed antenna system comprises four loop antenna elements, matched to 50 Ω, and one I2C addressed SP4T multiplexer circuitry, controlled through an exterior embedded system. The geometries, designs and characterizations of the antenna system are described in the manuscript in details. Measurement results show that the antenna system has low power reflections and a suitable Q factor. It has a maximum 11.1 cm RFID tag read range at an antenna system input power of 33 dBm. 2D RFID tag positioning can be enabled by utilizing the RFID tag interrogation zones formed by the four loop antenna elements. In addition, a parametric study is carried out to investigate the effect of loop antenna element DC resistance on the antenna element performance. It can be concluded that the proposed method can be used to create low-cost and large-area HF RFID reader antenna systems.

sted, utgiver, år, opplag, sider
445 Hoes Lane Piscataway, NJ 08854, USA: IEEE, 2018. Vol. 2, nr 3, s. 118-126
Emneord [en]
HF reader antenna system, 13.56 MHz, screen printed, paper substrate
HSV kategori
Identifikatorer
URN: urn:nbn:se:miun:diva-34384DOI: 10.1109/JRFID.2018.2869494OAI: oai:DiVA.org:miun-34384DiVA, id: diva2:1247524
Prosjekter
IDPOSTilgjengelig fra: 2018-09-12 Laget: 2018-09-12 Sist oppdatert: 2018-10-12bibliografisk kontrollert
Inngår i avhandling
1. Flexible Circuits and Materials for Creating Large-Area RFID Reader Antenna Systems
Åpne denne publikasjonen i ny fane eller vindu >>Flexible Circuits and Materials for Creating Large-Area RFID Reader Antenna Systems
2018 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)
Abstract [en]

One of the applications for RFID technology is to monitor and position RFID-tagged objects over large volumes. To achieve this, one possible option is to implement RFID reader antennas, which are relatively thin but with significantly large areas, and place them beneath the RFID-tagged objects.  In order to realise RFID reader antennas with large-areas, circuit materials other than conventional rigid PCB materials should be investigated and utilized. Therefore, this thesis addresses how non-conventional PCB materials can be used to achieve large-area RFID reader antenna structures.

   Non-conventional PCB materials are firstly chosen, which comprises patterned Al-polyimide foil, printed conductive Ag inks onto paper, polyethylene foam as antenna substrate. The physical and electrical properties of the materials are measured. These properties are later used in antenna simulations. In addition, assembly methods, e.g. circuit lamination and VIA fabrication, for the chosen materials are developed. 

   Three novel surface mounting techniques are developed and characterized in this thesis. The techniques are developed for mounting SMD components onto tracks made by Al, a screen printed Ag flake ink, and an inkjet printed Ag nanoparticle ink. These techniques are characterized and evaluated by various methods, including contact resistance measurements, bonding strength tests, and microscopy studies. The characterizations show these techniques have achieved low contact resistance and sufficient bonding strength.

   Based on the previous efforts, two antenna systems, respectively operating on UHF (867 MHz) and HF (13.56 MHz) bands, are fabricated. The two antenna systems are designed into SP4T switching networks, using standard antenna elements as the loads of the network. The input RFID interrogation signals from commercial industrial RFID readers are directed into every antenna element periodically through the SP4T switching networks. Both antenna systems are characterized by means of various RF power attenuation measurements and passive RFID tag interrogation tests. It is shown in the results that both antenna systems have low RF attenuations, potentials to perform passive RFID tag positioning, and possibilities to be expanded to larger areas.

   In the end, based on the antenna system characterization results and design parameters, a great amount of calculation is performed in order to discuss how large the antenna system areas can be as well as how many antenna elements can be achieved in one antenna system. 

sted, utgiver, år, opplag, sider
Sundsvall: Mid Sweden University, 2018. s. 67
Serie
Mid Sweden University licentiate thesis, ISSN 1652-8948 ; 148
HSV kategori
Identifikatorer
urn:nbn:se:miun:diva-34698 (URN)978-91-88527-79-0 (ISBN)
Presentation
2018-11-15, O102s, Holmgatan 10, Sundsvall, 10:00 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2018-10-12 Laget: 2018-10-12 Sist oppdatert: 2018-10-12bibliografisk kontrollert

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