Near-Field UHF Quadruple Loop Antenna With Uniform Field Distribution for Item-Level Tagging

Kim, Se-Young; Ahn, Seong‐Hyeop; Lee, Wang‐Sang

doi:10.1109/lawp.2021.3056026

Cited by 7 publications

(4 citation statements)

References 25 publications

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“…In terms of the physical aperture, the design presented in Ref. [22] is the most compact one, and the design from Ref. [21] has the largest aperture size.…”

Section: Simulated and Measured Resultsmentioning

confidence: 99%

A drawer‐conformal radio‐frequency identification antenna with vertically polarised quasi‐endfire radiation

Chen

Jia-fu

Cheng

2022

IET Microwaves Antenna & Prop

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A radio‐frequency identification antenna with a quasi‐endfire radiation beam and a vertical polarisation is presented. A size‐reduced magnetic dipole is used as the radiation source whose radiating waves are restricted by a dual‐layer metasurface to propagate along the horizontal direction and result in an endfire pattern. Two vertical metal plates are placed at both ends to induce magnetic currents to realise the vertical polarisation. Based on the near‐field power analysis, the proposed metasurface‐covered endfire antenna, which is conformal to fit compactly into a drawer with little influence on the storage space, can be used for smart home and smart library systems, such as intelligent storage and reading.

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“…In terms of the physical aperture, the design presented in Ref. [22] is the most compact one, and the design from Ref. [21] has the largest aperture size.…”

Section: Simulated and Measured Resultsmentioning

confidence: 99%

A drawer‐conformal radio‐frequency identification antenna with vertically polarised quasi‐endfire radiation

Chen

Jia-fu

Cheng

2022

IET Microwaves Antenna & Prop

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“…It is necessary to successfully read valuables goods with 100 % probability such as medicines, and jewelry. However, one of the key technical issues in the design of UHF near-field RFID reader antennas is to generate a sufficiently strong and relatively uniform field distribution [7][8][9][10][11][12] . In addition, low-cost commercial tag antennas are linearly polarized posing orientation sensitivity issues.…”

Section: Introductionmentioning

confidence: 99%

Nature-Inspired Spider Web Shaped UHF RFID Reader Antenna for IoT and Healthcare Applications

Sharif,

kumar,

Arshad

et al. 2023

Preprint

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This paper proposes a nature-inspired spider web-shaped ultra-high frequency (UHF) radio frequency identification (RFID) reader antenna and battery-free sensor-based system for healthcare applications. This antenna design consists of eight concentric decagons of different sizes and five straight microstrip lines that are connected to the ground using 50 Ω resistors from both ends except one microstrip line, which is left for connecting a feeding port. The reader antenna design features fairly strong and uniform electric and magnetic field characteristics. Likewise, it also poses wideband characteristics by covering whole UHF RFID band (860 – 960 MHz) and tag reading volume of 200 × 200 × 20 mm 3. Additionally, it has low gain characteristics, which are necessary for the majority of nearfield applications to prevent the misreading of other tags. Moreover, the symmetric current distribution throughout the structure in this design addresses the orientation sensitivity issues associated with low-cost linearly polarized tag antennas. The measurement results show that the reader antenna can read medicine pills tagged using low-cost passive/battery-free RFID tags, tagged expensive jewelry, intervenes solution, and blood bags positioned in various orientations. As a result, the proposed reader antenna-based system is a strong contender for near-field RFID, healthcare, and IoT applications.

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“…More recently, the state-of-the-art RFID antennas include a near-field RFID tag designed to operate at 900 MHz [16]. This antenna consists of quadruple fan-shaped small loops and the middle feeding lines of each loop located at the top and bottom of the substrate are excited using vias.…”

Section: Introductionmentioning

confidence: 99%

Novel Concentric Hexagonal-Shaped RFID Tag Antenna With T-Shaped Stub Matching

Alibakhshikenari

Virdee

Althuwayb

et al. 2022

IEEE J. Radio Freq. Identif.

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Near-Field UHF Quadruple Loop Antenna With Uniform Field Distribution for Item-Level Tagging

Cited by 7 publications

References 25 publications

A drawer‐conformal radio‐frequency identification antenna with vertically polarised quasi‐endfire radiation

A drawer‐conformal radio‐frequency identification antenna with vertically polarised quasi‐endfire radiation

Nature-Inspired Spider Web Shaped UHF RFID Reader Antenna for IoT and Healthcare Applications

Novel Concentric Hexagonal-Shaped RFID Tag Antenna With T-Shaped Stub Matching

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