Miniaturization of Robust UHF RFID Antennas for Use on Perishable Goods and Human Bodies

Dubok, A.; Smolders, A.B.

doi:10.1109/lawp.2014.2337051

Cited by 26 publications

(22 citation statements)

References 12 publications

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“…The performance parameters discussed above suffer significant degradation in applications that involve human body as a platform . Antenna designs with the ground plane are observed to be robust to the electromagnetically complex environments such as metals and human body . One such structure proposed in Ref.…”

Section: Rfid Tag Antenna Designmentioning

confidence: 99%

“…A more viable solution is to decouple the radiating element from the human body through a high permittivity insulating slab. The insulation reduces the influence of the body contact on the tag's performance …”

Section: Introductionmentioning

confidence: 99%

“…The insulation reduces the influence of the body contact on the tag's performance. 23,24 The majority of the reported body-centric RFID tag antennas operate in the UHF band (860-960 MHz) primarily due to the benefit of longer read range. Conversely, for applications that pose stringent requirements for higher data rates, designing tag antennas that operate in the microwave band (2.4-2.48 GHz) is a rational choice.…”

Section: Introductionmentioning

confidence: 99%

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Miniaturized decoupled slotted patch RFID tag antennas for wearable health care

Aslam

Khan

Azam

et al. 2016

Int. J. RF Microw. Comput. Aided Eng.

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In this article, a couple of two‐layered RFID tag antenna designs exhibiting improved performance descriptors for on‐body applications are presented. The antennas are designed to operate in the microwave band (2.4–2.48 GHz) ensuring high data transmission rates ideal for real‐time subject monitoring applications. The radiating element of both the antennas is a slotted patch structure provisioned with a pair of T‐shaped slots realized on a commercial FR4 substrate. The augmentation of a systematic sequence of narrow comb‐like etchings into the design enhances the impedance bandwidth considerably. A high permittivity silicon layer embedded with the radiating patch provides resilience from the human body dielectric losses. A modified antenna design utilizing patch miniaturization technique, resulting in an overall footprint reduction by 32%, is also proposed. The designed tag antennas offer a gain of more than 1.8 dBi and an attractive read range greater than 6.8 m in the operating band.

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Section: Rfid Tag Antenna Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Miniaturized decoupled slotted patch RFID tag antennas for wearable health care

Aslam

Khan

Azam

et al. 2016

Int. J. RF Microw. Comput. Aided Eng.

View full text Add to dashboard Cite

show abstract

“…Due to the on-body effects, many different methods and techniques have been proposed to improve the performances (e.g., gain and reading range) of the RFID tag when it is at on-body condition [4,[6][7][8][9][10][11][12]. The easiest way to improve the reading range for on-body RFID tag monitoring application is to use an active RFID tag assisted by battery as reported in [6]; however, such method will increase the cost and thickness (profile) of the RFID tag.…”

Section: Introductionmentioning

confidence: 99%

“…Even though the layout of [7] allows it to host the sensors and the slot design can be easily tuned to achieve good inductive reactance, the antenna must be electrically isolated from the skin via a 4 mm thick silicone substrate. A balanced slot-antenna concept was studied in [8] for complex environment (e.g., meat, water); however, the planar size of this tag antenna is 120 mm × 30 mm. To achieve a reading range of approximately 3.9 m (effective isotropic radiated power, EIRP 4W) when attached to the stern of a human body, a four-element PIFA array tag has been reported [9], and it has a planar size of 85.5 mm × 54 mm.…”

Section: Introductionmentioning

confidence: 99%

Low‐Profile Flexible UHF RFID Tag Design for Wristbands Applications

Huang

Sim

Liang

et al. 2018

Wireless Communications and Mobile Computing

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In this study, a low-profile ultrahigh frequency (UHF) radio-frequency identification (RFID) tag antenna designed for wristbands in healthcare applications is proposed. The radiator is based on the open-slot cavity technique that is composed of a slotted patch (double-T slots) loaded onto a flexible open cavity. The proposed slotted design can easily allow the tag's input impedance to be tuned to the complex impedance of typical UHF RFID chips. The proposed tag antenna has a size of 86 mm × 25 mm × 1.6 mm (0.26 0 × 0.07 0 × 0.004 0 ) at 915 MHz, and it can yield a maximum reading range of 8 m (stand alone in free-space condition), 6.6 m (when placed on the human wrist in free-space condition), and up to 3 m (when placed on the human wrist in a crowded condition).

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Ultra-high-frequency radio frequency identification tag antenna applied for human body and water surfaces

She

Tang

Wen

et al. 2018

Int J RF Microw Comput Aided Eng

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A novel ultra-high-frequency (UHF) radio frequency identification (RFID) tag antenna has been proposed in this article, which can be mounted on the surfaces of the human body and water. The proposed antenna is realized by an elliptical structure, whose long and short axes are 72 and 30 mm, respectively. The tag antenna consists of an elliptical loop radiation element, microstrip feed lines, arc matching networks, and tuning patches. We have analyzed the antenna radiation characteristics influenced by the structural parameters of the antenna and the thicknesses of the human body and water. The simulation and measurement results show that the proposed antenna can operate steadily on the surfaces of the human body and water with good conjugate impedance matching. The maximum measured reading range of the tag antenna on the surfaces of the human body and water can reach 5 and 7 m, respectively. The novelties exhibited in the proposed antenna include an elliptical structure, the stable performance on the surfaces of the human body and water, small size, and long reading range. K E Y W O R D S elliptical structure, human body surface, tag antenna, UHF RFID, water surface

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Miniaturization of Robust UHF RFID Antennas for Use on Perishable Goods and Human Bodies

Cited by 26 publications

References 12 publications

Miniaturized decoupled slotted patch RFID tag antennas for wearable health care

Miniaturized decoupled slotted patch RFID tag antennas for wearable health care

Low‐Profile Flexible UHF RFID Tag Design for Wristbands Applications

Ultra-high-frequency radio frequency identification tag antenna applied for human body and water surfaces

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