Reduction of sidelobe radiations of the standard pyramidal horn using a thin metamaterial lens

Chen, Xuxiang; Ge, Yuehe; Bird, Trevor S.

doi:10.1049/el.2016.3336

Cited by 21 publications

(5 citation statements)

References 6 publications

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“…Beyond compactness, other attractive antenna behaviours can be achieved by introducing metamaterials. We can mention a bandwidth enhancement by using SRR resonators [1] or spiral resonators [2]; a gain improvement by a planar artificial magnetic conductor [7]; a reduction of sidelobe radiations by a thin metamaterial lens [8]; a reduction of the specific absorption rate in multi-standard mobile bands by a metamaterial loaded ground plane [9]; and a multi-band operation of an SRR coupled monopole antenna [6]. The miniaturised antennas were generally developed in printed circuit board (PCB) technology which seems not suitable for body-worn applications such as wireless body area networks.…”

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confidence: 99%

Textile split ring resonator antenna integrated by embroidery

et al. 2019

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A split ring resonator (SRR) antenna integrated in textile by embroidery is reported. The antenna was designed and produced by targeting two goals. First, a size reduction of the antenna was achieved by means of an SRR. Secondly, the connection loss was reduced by using a copper wire dipole fixed by embroidery. On the basis of numerical simulations, three operating modes are evidenced depending on the individual resonance frequency either of the dipole or resonatorrelated. Especially, a balanced mode is confirmed by experiments with two resonances measured at 1.8 and 2.2 GHz with a return loss greater than 31 dB. Finally, the textile antenna exhibits a radiation pattern similar to the radiation pattern of a dipole antenna.

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confidence: 99%

Textile split ring resonator antenna integrated by embroidery

et al. 2019

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“…Therefore, an additional technique should be applied to expend the operating frequency range and improve the antenna performance at the upper part of the bandwidth. One of the methods to reduce the phase incursion in the aperture is the use of lens from metamaterials [5].…”

Section: Introductionmentioning

confidence: 99%

Biconical antenna with inhomogeneous dielectric lens for UWB applications

et al. 2020

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The improvement of the ultra-wideband (UWB) biconical antenna directional characteristics at the upper part of the bandwidth by filling the aperture with the inhomogeneous dielectric lens is discussed in this Letter. The inhomogeneity of the filling was achieved by the complex three-dimensional configuration of the air gaps and the dielectric with constant permittivity. The distribution law of permittivity in the aperture was obtained in the geometrical optics approximation using the law of Lihtenekker for finely dispersed composition of substances with different dielectric constants. The numerical simulations and the experimental measurements of the biconical antenna characteristics have been carried out and the results are presented. The application of the proposed method allows to reduce the level of lateral radiation and to increase the antenna gain and bandwidth. The technique for the lens manufacturing by using 3D printing technologies is presented.

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“…Such an SRR can be considered to improve other antenna performances as well. We can mention a bandwidth and a gain enhancement [3], a reduction of the side lobe radiation [4], or the production of a multi-band operation [5]. Generally, these antennas are fabricated in printed circuit board and for body-worn applications a better integration in textile is required.…”

Section: Introductionmentioning

confidence: 99%

3a3_0443_ Embroidered Split Ring Resonator Antenna

Hao,

Leblanc,

Burgnies

et al. 2019

Autex

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A textile integrated antenna made of a dipole and split ring resonators (SRR) produced by embroidery is under consideration. A size reduction of the antenna was achieved by means of a resonance of the SRRs and connection loss was lessened by using a copper wire for the dipole. Embroidery for SRR fabrication with metallic yarn was studied in order to achieve a minimal distance between concentric rings, and an antenna was designed and produced. The manufactured antenna showed a double band operation at 1.8 and 2.2 GHz with a measured gain of 0 and -3.1 dBi, respectively.

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Reduction of sidelobe radiations of the standard pyramidal horn using a thin metamaterial lens

Cited by 21 publications

References 6 publications

Textile split ring resonator antenna integrated by embroidery

Textile split ring resonator antenna integrated by embroidery

Biconical antenna with inhomogeneous dielectric lens for UWB applications

3a3_0443_ Embroidered Split Ring Resonator Antenna

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