Matching Techniques for Miniaturized UHF RFID Loop Antennas

Im, Yun-Taek; Kim, Jea-Hee; Park, Wee-Sang

doi:10.1109/lawp.2009.2014399

Cited by 9 publications

(1 citation statement)

References 4 publications

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“…However, it is not suggested at UHF band because the multiturn loop or spiral inductor has poor far-field gain. The other way is to use folded-dipole loop [23]. The folded-dipole loop antenna has good size reduction and exhibits better farfield gain than multiturn loop.…”

Section: Antenna Designmentioning

confidence: 99%

A Compact RFID Reader Antenna for UHF Near-Field and Far-Field Operations

Zheng

Xie

Cen

2013

International Journal of Antennas and Propagation

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A compact loop antenna is presented for mobile ultrahigh frequency (UHF) radio frequency identification (RFID) application. This antenna, printed on a 0.8 mm thick FR4 substrate with a small size of 31 mm × 31 mm, achieves good impedance bandwidth from 897 to 928 MHz, which covers USA RFID Band (902–928 MHz). The proposed loop configuration, with a split-ring resonator (SRR) coupled inside it, demonstrates strong and uniform magnetic field distribution in the near-field antenna region. Its linearly polarized radiation pattern provides available far-field gain. Finally, the reading capabilities of antenna are up to 56 mm for near-field and 1.05 m for far-field UHF RFID operations, respectively.

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Section: Antenna Designmentioning

confidence: 99%

A Compact RFID Reader Antenna for UHF Near-Field and Far-Field Operations

Zheng

Xie

Cen

2013

International Journal of Antennas and Propagation

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Bendable ultra‐high frequency radio‐frequency identification tag antenna for retail garments using nonuniform meandered lines

Kumar

Sharma

Zuazola

2021

Engineering Reports

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A bendable ultra‐high frequency (UHF) radio‐frequency identification (RFID) tag antenna using nonuniform meandered lines for retail garments in the textile industry is presented. Based on an earlier UHF RFID tag antenna using nonuniform meandered lines, the proposed tag is fully bendable and aimed to be embedded in retail garments for long‐life cycles. As a result, a relatively low cost, wideband, compactness, and good conjugate matching with good dipole‐like read range is presented. Results showed an antenna with a wide bandwidth of 900 MHz and a long read range of 10.1 m making the UHF RFID tag antenna using nonuniform meandered lines a potential candidate for retail garments in bendable applications of the textile industry. Simulations are corroborated by measurements and are in fairly agreement.

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A tri‐band, small size radio frequency identification tag antenna with U‐shaped slots

Aliakbari

Mallahzadeh

Nezhad

2012

Micro & Optical Tech Letters

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A new multiband, small size antenna for passive radio frequency identification (RFID) tags is presented. Placement of three U‐shaped slots can create three independent resonances within the RFID range: 0.953, 2.45, and 5.8 GHz, whereas in each resonance, particular inductive input impedance will be achieved by a simple technique to be conjugately matched with the capacitive impedance of the chosen electronic chip. The proposed simple structural antenna is flexibly tunable to be matched with other chips in RFID frequencies. It is shown that the matching and forward patterns of tag antenna in each band are desirable, simultaneously. Details of the proposed antenna design and measured results are presented. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1975–1978, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26949

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Matching Techniques for Miniaturized UHF RFID Loop Antennas

Cited by 9 publications

References 4 publications

A Compact RFID Reader Antenna for UHF Near-Field and Far-Field Operations

A Compact RFID Reader Antenna for UHF Near-Field and Far-Field Operations

Bendable ultra‐high frequency radio‐frequency identification tag antenna for retail garments using nonuniform meandered lines

A tri‐band, small size radio frequency identification tag antenna with U‐shaped slots

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