Dual-Band UHF-RFID Tags Based on Meander-Line Antennas Loaded With Spiral Resonators

Paredes, Ferran; Zamora, Gerard; Herráiz-Martínez, Francisco Javier; Martín, Ferrán; Bonache, Jordi

doi:10.1109/lawp.2011.2162716

Cited by 46 publications

(30 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A comparison between (12) and (14) reveals that the electric dipole moment is much higher along the y-direction than the x-direction, since r 0 >> (c + d). Therefore, the total electric dipole moment can be approximated by ŷ p ≈ p y.…”

Section: Analysis Of the 2-sr Radiation Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

2-SR-based electrically small antenna for RFID applications

et al. 2016

View full text Add to dashboard Cite

In this work, the 2-turns Spiral Resonator (2-SR) is proposed as an electrically small antenna for passive radio frequency identification (RFID) tags at the European UltraHigh Frequency (UHF) band. The radiation properties are studied in order to explore the viability of the 2-SR applied to tag antenna design. Based on analytical calculations, the radiation pattern is found to provide a cancellation of the radiation nulls. This results in a mitigation of the blind spots in the read range, which are present in typical UHF-RFID tags as an undesired feature. As a proof of concept, a passive tag of size 35 mm x 40 mm (λ 0 /10 x λ 0 /9) based on the 2-SR antenna is designed and fabricated. Good radiation efficiency (75%) and a quasi-isotropic radiation pattern are obtained. The experimental tag read range for different directions is in good agreement with the simulation results. The measured read range exhibits maximum and minimum values of 6.7 m and 3.5 m, respectively.

show abstract

Section: Analysis Of the 2-sr Radiation Propertiesmentioning

confidence: 99%

“…Specifically, this feature has been also employed to develop size optimized RFID tags [11]. Moreover, spirals have been also used to achieve dual band behavior in RFID tags [12] .…”

Section: Introductionmentioning

confidence: 99%

2-SR-based electrically small antenna for RFID applications

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The resonator produces a perturbation in both the characteristic impedance and the phase constant of the transmission line, and conjugate matching at two frequencies can be obtained (the details are given in [40]). However, it is possible to directly actuate on the characteristic impedance of the antenna, by loading it with metamaterial resonant particles [41] (avoiding thus the matching circuitry). The principle is very similar to that reported in [40] for matching networks.…”

Section: Dual-band Uhf-rfid Tagsmentioning

confidence: 99%

Recent Advances in Multiband Printed Antennas Based on Metamaterial Loading

Paredes

Zamora

Zufanelli

et al. 2012

Advances in OptoElectronics

Self Cite

View full text Add to dashboard Cite

It is shown that printed antennas loaded with metamaterial resonators can be designed to exhibit multiband functionality. Two different antenna types and metamaterial loading are considered: (i) printed dipoles or monopoles loaded with open complementary split ring resonators (OCSRRs) and (ii) meander line or folded dipole antennas loaded with split ring resonators (SRRs) or spiral resonators (SRs). In the first case, multiband operation is achieved by series connecting one or more OCSRRs within the dipole/monopole. Such resonators force opens at their positions, and by locating them at a quarter wavelength (at the required operating frequencies) from the feeding point, it is possible to achieve multiple radiation bands. In the second case, dualband functionality is achieved through the perturbation of the antenna characteristics caused by the presence of the metamaterial resonators. This latter strategy is specially suited to achieve conjugate matching between the antenna and the chip in radiofrequency identification (RFID) tags at two of the regulated UHF-RFID bands.

show abstract

“…In accordance to the literature, various configurations have been employed for the design of passive tag antennas, which aim at both satisfactory gain and matching to the IC be achieved: antennas, of simple dipole or monopole type [5], [6], of meandered line shape [7][8][9][10], of fractal shape [11][12][13][14], of metamaterial-inspired type [15][16][17] or based on Split Ring Resonator (SRR) concept [18]. Recently, published works for RFID tag antenna design propose coupled shorted patches, configured as step-impedance sections and being suitable for dielectric and metallic hosts [19].…”

Section: Introductionmentioning

confidence: 99%