Electrically small split ring resonator antennas

Alıcı, Kamil Boratay; Özbay, Ekmel

doi:10.1063/1.2722232

Cited by 158 publications

(106 citation statements)

References 21 publications

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“…To date, metamaterials have been widely investigated 4-7 and exploited for numerous functions, e.g., to obtain negative refraction, [8][9][10] cloaking, 11 superlenses, 12 antennas, 13 plasmons with nanowires, 14 laser output facets, 15 and focused light. 16 However, metamaterial architectures have not been studied for sensing till date.…”

mentioning

confidence: 99%

Metamaterial-based wireless strain sensors

Melik

Ünal

Perkgöz

et al. 2009

Applied Physics Letters

157

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We proposed and demonstrated metamaterial-based strain sensors that are highly sensitive to mechanical deformation. Their resonance frequency shift is correlated with the surface strain of our test material and the strain data are reported telemetrically. These metamaterial sensors are better than traditional radio-frequency (rf) structures in sensing for providing resonances with high quality factors and large transmission dips. Using split ring resonators (SRRs), we achieve lower resonance frequencies per unit area compared to other rf structures, allowing for bioimplant sensing in soft tissue (e.g., fracture healing). In 5×5 SRR architecture, our wireless sensors yield high sensitivity (109 kHz/kgf, or 5.148 kHz/microstrain) with low nonlinearity error (<200 microstrain). © 2009 American Institute of Physics

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mentioning

confidence: 99%

Metamaterial-based wireless strain sensors

Melik

Ünal

Perkgöz

et al. 2009

Applied Physics Letters

157

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“…According to (9) and (10), the charge density vanishes at the transition between rings, and exhibits a maximum at the 2-SR edges (see Figure 1a). In order to simplify the calculation of the electric dipole moment, the charge density was decomposed into the sum of two charge densities in the upper half of the external ring, i.e.…”

Section: Analysis Of the 2-sr Radiation Propertiesmentioning

confidence: 99%

“…Metamaterial-inspired resonators, e.g. the split ring resonator (SRR) or its complementary counterpart (CSRR) [7], the open split ring resonators (OSRR) [8], among others, have been applied to electrically small antenna design [9,10], since their physical dimensions are much smaller than the wavelength at the working frequency. Specifically, this feature has been also employed to develop size optimized RFID tags [11].…”

Section: Introductionmentioning

confidence: 99%

2-SR-based electrically small antenna for RFID applications

et al. 2016

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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.

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“…Even if other structures such as Ω-, S-, and L-shaped resonators were proposed [5][6][7], the left-handed passband frequency in most of these cases is relatively narrow. All the interesting effects realized by metamaterials, such as negative refraction, perfect lensing [8], cloaking [9], filtration [10], and antennas [11], are confined to a fixed narrow spectral bandwidth. Thus, it is highly desirable that the operating frequency of metamaterials could be tuned so as to relieve these limitations.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Split-Ring Resonators for Tunable Negative Permeability Metamaterials Based on Anisotropic Dielectric Substrates

Chen¹,

Chen²,

Yeh³

et al. 2009

PIER M

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Abstract-The magnetic resonance of various split ring resonators (SRRs) is numerically investigated to analyze the dependence of the resonance frequency on their parameter designs. The behavior of the magnetic resonance frequency in the configuration of the 2-cut singlering SRR (2C-SRR) shows a larger shift in relation to the changes of the SRR size scaling, split width and substrate permittivity. A new magnetic particle formed by the 2C-SRR structure incorporating nematic liquid crystals (LCs) into the multilayered substrate is proposed for the realization of a tunable magnetic metamaterial. When using such inclusions, the tuning range of the magnetic resonance conditions could be as wide as ∼ 1.1 GHz via changing the orientation of LC molecules by 90 • .

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Electrically small split ring resonator antennas

Cited by 158 publications

References 21 publications

Metamaterial-based wireless strain sensors

Metamaterial-based wireless strain sensors

2-SR-based electrically small antenna for RFID applications

Comparative Analysis of Split-Ring Resonators for Tunable Negative Permeability Metamaterials Based on Anisotropic Dielectric Substrates

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