Miniature Coplanar-Fed Folded Patch for Metal Mountable UHF RFID Tag

Moh, Cai-Wei; Lim, Eng-Hock; Bong, Fwee-Leong; Chung, Boon-Kuan

doi:10.1109/tap.2018.2811784

Cited by 49 publications

(32 citation statements)

References 25 publications

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“…Meanwhile, the works presented in refs. [24][25][26]28,32,37] have used folding polyethylene terephthalate (PET) around the foam without requiring any metallic vias or shorting pins. However, the best achieved realized gain is 1 dB for the designed work in ref.…”

Section: Simulated and Measured Resultsmentioning

confidence: 99%

“…In contrast, the folded patch antenna in refs. [24,25] does not include metallic vias so as to achieve size reduction; its thickness exceeds 2 mm to attain a comparable realized gain.…”

Section: Introductionmentioning

confidence: 99%

“…The previous reported structures [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] have utilized complex methods such as AMC structure, EBG cells, EBG ground layer, air gap, foam layer, reflector, costly substrate, shorting vias or walls. These mentioned approaches require difficult fabrication work and thus add to overall cost.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Simulated and Measured Resultsmentioning

confidence: 99%

“…In contrast, the folded patch antenna in refs. [24,25] does not include metallic vias so as to achieve size reduction; its thickness exceeds 2 mm to attain a comparable realized gain.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Miniature Compact Folded Dipole for Metal Mountable UHF RFID Tag Antenna

et al. 2019

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“…This time, we simulated our antenna with a metal plate to see its effect on our tag. A foam layer (polyethylene foam with Ɛr = 1.03, and tan φ = 0.0001) [30] has been introduced between them, as shown in Fig. 6.…”

Section: Tag Antenna For Metallic Environmentmentioning

confidence: 99%

Analysis, Design, and Manufacture of a Compact UHF RFID Tag Antenna for Operating in a Metallic or Non-Metallic Environments

Hachimi¹,

Farchi²

2020

IJIES

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A miniaturized tag antenna is presented in this paper, for operating in the RFID UHF American band, in free space or in a metallic environment. The proposed antenna is printed on a single layer FR4 substrate, and designed first to work in a free space. The shape of the π-match allowed us to achieve a good matching between the antenna impedance and that of the chip. The correspondence between simulation results in CST and HFSS pushed us to manufacture a prototype of our tag. After that, we simulated the proposed antenna in a metallic area, by adding a square metal plate separated with the antenna by a foam-layer, in order to test the performance of the tag in this environment. An optimization procedure enabled us to achieve a good performance when operating in metallic surroundings. Finally, we tested the reading range of the manufactured tag. We obtained a good range of about 6.5m. The final design of our proposed tag has a simple structure, a dimension of 51×26,63×0.8 3 and which is reduced by 88,64% compared to the calculated theoretical dimensions of a patch antenna operating at the resonant frequency of 915 MH.

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“…Specifically, the feeding network consists in a small loop printed in correspondence of the center of the slot between the two patches, and its dimensions are optimized to adapt the input impedance. In [5], a 25×40×3 mm 3 folded patch antenna designed on a flexible polyethylene terephthalate (PET) substrate is proposed, which achieves a maximum read range of 10m with an EIRP of 4W when attached on a metal object. Other examples of small and flexible metal mountable UHF RFID tags are described in [6], where a 30×30 mm 2 serrated folded patch is wrapped around a 3-mm-thick foam substrate, and in [7], where a 14×28 mm 2 antenna has been designed on a 1.5-mm-thick high-dielectric polymer-ceramic composite substrate.…”

Section: Introductionmentioning

confidence: 99%

A UHF RFID Tag Embeddable in Small Metal Cavities

Michel

Franchina

Nepa

et al. 2019

IEEE Trans. Antennas Propagat.

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A compact in-metal UHF RFID tag for identification of metal components is described. The radiating element is printed on a 23×23×1 mm 3 copper-clad Alumina (Al2O3) substrate (r=9, tan=0.0003) and consists of two rectangular quarter-mode patch antennas properly arranged to make the tag performance as robust as possible even when the tag is embedded in small cavities carved out of metal objects. The entire structure has been optimized by taking into account the presence of a thin superstrate of commercial epoxy resin used to protect the tag. The effect of the cavity size on the tag performance is numerically analyzed. Measurements on a tag prototype are also described and discussed.

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Miniature Coplanar-Fed Folded Patch for Metal Mountable UHF RFID Tag

Cited by 49 publications

References 25 publications

Miniature Compact Folded Dipole for Metal Mountable UHF RFID Tag Antenna

Miniature Compact Folded Dipole for Metal Mountable UHF RFID Tag Antenna

Analysis, Design, and Manufacture of a Compact UHF RFID Tag Antenna for Operating in a Metallic or Non-Metallic Environments

A UHF RFID Tag Embeddable in Small Metal Cavities

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