Coplanar UHF RFID tag antenna with U-shaped inductively coupled feed for metallic applications

Salman, Karrar Naji; Ismail, Alyani; Abdullah, Rusli; Saeedi, Tale

doi:10.1371/journal.pone.0178388

Cited by 11 publications

(9 citation statements)

References 62 publications

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“…However, such models do not directly ensure the reliability required for passive UHF tags for textile items which require repeated washing. Because UHF antenna plays an important role in RFID systems, much research has focused on optimizing the tag's UHF antenna structure [23] or choice of materials [16][17][18][19][20].…”

Section: Conceptual Design Of a New Washable Uhf Rfid Passive Tagmentioning

confidence: 99%

“…Research related to the improvement of electromagnetic characteristics of the RFID passive tags (resonant frequency, the impedance) has been extended by taking into consideration the specific character of the targeted object (shape, size, geometry, composition) and the object operating environment [23,[31][32][33]. The impact of the electrical properties of the substrate material on the performance of the UHF RFID tags is covered in [16]: The dielectric loss factor affects the efficiency.…”

Section: Conceptual Design Of a New Washable Uhf Rfid Passive Tagmentioning

confidence: 99%

“…It turned out that protective coating is needed, and should be flexible, durable, and hydrophobic. The effects of thermal stress on the reliability of passive RFID tags were studied in [23], with accelerated life tests.…”

Section: Introductionmentioning

confidence: 99%

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A New Washable UHF RFID Tag: Design, Fabrication, and Assessment

Moraru

Ursachi

Helerea

2020

Sensors

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This paper deals with the design and fabrication of durable radio frequency identification (RFID) passive tag with inductive coupling, operating at ultra-high frequencies, dedicated to the identification and monitoring of professional textile products. A reliable architecture for the tag transponder is proposed, featuring a minimal number of galvanic contacts: The two pins of the integrated circuit are connected to the terminals of the inductive coupling loop by using surface mount technology welding. The transponder is encapsulated with an electrically insulating material which is waterproof and resistant to mechanical, thermal, and chemical stress. The antenna is inductively coupled to the transponder through a double loop which substantially reduces the length of the tag and significantly improves the coupling factor, enabling the tag to operate at a low power level. The reliability and flexibility of the tag is obtained by using appropriate materials and manufacturing methods for the ultra-high frequency (UHF) antenna by embroidering a multifilament stainless steel wire on textile support. The washing cycle tests have validated the applicability of this flexible and washable RFID tag, and its electromagnetic performance was experimentally assessed in an independent laboratory.

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Section: Conceptual Design Of a New Washable Uhf Rfid Passive Tagmentioning

confidence: 99%

Section: Conceptual Design Of a New Washable Uhf Rfid Passive Tagmentioning

confidence: 99%

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A New Washable UHF RFID Tag: Design, Fabrication, and Assessment

Moraru

Ursachi

Helerea

2020

Sensors

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“…A typical RFID system consists of several components: an RFID interrogator and an RFID tag antenna, which comprises an IC chip and an antenna [6]. The reading range of the tag antenna depends on its efficiency and gain and the minimum threshold power of the IC chip [7]. The circuit size, reading range, and compatibility of the tag antenna, with tagged objects, play a significant role in determining the performance of an antenna [8].…”

Section: Introductionmentioning

confidence: 99%

Low-profile folded dipole UHF RFID tag antenna with outer strip lines for metal mounting application

Erman¹,

Hanafi²,

Lim³

et al. 2020

Turk J Elec Eng & Comp Sci

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A metal mountable UHF RFID tag antenna with a low-profile folded dipole structure is proposed. It is fabricated on a single layer of polytetrafluoroethylene (PTFE) dielectric laminate. It is composed of two symmetrical C-shape resonators integrated with the outer strip lines. The IC chip's terminals are connected directly to the center of the C-shaped resonators. The outer strip lines are integrated with the C-shaped resonators, which function to lower the reflection coefficient so as to match the IC chip impedance. In particular, the outer strip lines increase the inductive reactance of the antenna impedance in order to realize IC chip impedance. The design has a simple structure, due to the fact that it lacks any metallic vias. Moreover, the gain of the tag antenna can be enhanced when positioned on a large metallic sheet. Installed on a 40 × 40 cm 2 metallic plate, the total gain of the proposed tag antenna is 3 dB, with a maximum reading range of 5.77 m, while it is 3.92 m in free space. The simulation results were in excellent agreement with the fabricated design results.

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“…Recently, the implementation of a passive radio frequency identification (RFID) (860-960 MHz) has attracted a considerable amount of attention from numerous sectors, such as logistics, retail industries, and tracking management [1][2][3]. Passive RFID tag antenna consisting of an antenna and integrated circuit (IC) chip, and implemented at an ultra-high frequency (UHF) band is capable of prolonging the read range at the expense of a low manufacturing cost [4,5]. However, its performance in the presence of a metallic surface can display a significant degradation in terms of efficiency and gain.…”

Section: Introductionmentioning

confidence: 99%

Miniature Compact Folded Dipole for Metal Mountable UHF RFID Tag Antenna

et al. 2019

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This article describes the design of an Ultra-High Frequency (UHF) miniature folded dipole Radio Frequency Identification (RFID) tag antenna that can be mountable on metallic objects. The compact tag antenna is formed from symmetric C-shaped resonators connected with additional arms embedded into the outer strip lines for miniaturization purposes. It is loaded with outer strip lines, resulting in a flexible tuning method that is capable of matching the integrated circuit (IC) chip’s impedance. The proposed tag is fabricated on a single layer of Polytetrafluoroethylene (PTFE) substrate. It has simple structure and does not require any metallic vias or shorting plate. The miniature tag antenna with a size of 82.75 × 19.5 × 1.5 mm 3 yields a total realized gain of − 0.53 dB at the resonance frequency when attached to a 40 × 40 cm 2 metal plate. The presented design utilizes a European RFID band, and the simulated results of realized gain, read range, and input impedance are verified with measurement results.

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Coplanar UHF RFID tag antenna with U-shaped inductively coupled feed for metallic applications

Cited by 11 publications

References 62 publications

A New Washable UHF RFID Tag: Design, Fabrication, and Assessment

A New Washable UHF RFID Tag: Design, Fabrication, and Assessment

Low-profile folded dipole UHF RFID tag antenna with outer strip lines for metal mounting application

Miniature Compact Folded Dipole for Metal Mountable UHF RFID Tag Antenna

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