All-dielectric left-handed metamaterial based on dielectric resonator: design, simulation and experiment

Feng

et al. 2017

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In this paper, we demonstrate a method of designing all-dielectric metamaterial frequency selective surface (FSS) with ceramic resonators in spatial arrangement. Compared with the traditional way, spatial arrangement provides a flexible way to handle the permutation and combination of different ceramic resonators. With this method, the resonance response can be adjusted easily to achieve pass/stop band effects. As an example, a stop band spatial arrangement all-dielectric metamaterial FSS is designed. Its working band is in 11.65-12.23 GHz. By adjusting permittivity and geometrical parameters of ceramic resonators, we can easily modulate the resonances, band pass or band stop characteristic, as well as the working band.

Section: Analysis and Discussionmentioning

confidence: 99%

All-dielectric metamaterial frequency selective surface based on spatial arrangement ceramic resonators

Feng

et al. 2017

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“…[19][20][21] According to Mie resonance theory, [22][23][24][25][26][27] Zhao et al measured the isotropic negative permeability from a composite all-dielectric device, which was composed of BST cubes array embedded inside the threedimensional (3D) Teflon matrix. 24 Based on the dielectric resonator theory, 25,26 an all-dielectric frequency selective surface (FSS) with both negative permittivity and permeability was prepared, by arranging dielectrics array (" r ¼ 115, tan δ r ¼ 0:008) on the matrix. 27 Additionally, the various highpermittivity ADRS were presented to construct binary (dielectric backplane) metamaterial absorber (BMA).…”

Section: Introductionmentioning

confidence: 99%

Analysis of triple-band binary metamaterial absorber based on low-permittivity all-dielectric resonance surface

Tang

et al. 2018

Different from the conventional metamaterial absorbers (MAs), which used metal resonance surface and ternary structure (metaldielectric-backplane), as an alternative route, the all-dielectric resonance surface (ADRS) made of single low-permittivity dielectric is proposed to design binary (dielectric backplane) metamaterial absorber (BMA). As an illustration, a triple-band BMA composed of ADRS with a metallic backplane is designed and fabricated, where the ADRS incorporates two dielectric layers with different hole-array structures. The absorbing mechanisms of this kind of absorber are analyzed via analyzing configurations of power loss density, electric field and magnetic field, as well as investigating dependences of absorbing properties on structure dimensions. The study indicates that the structural design of ADRS leads to reverse magnetic field rings distributed inside the dielectric, forming the strong couplings at the resonance frequencies. The proposed BMA relies on low-permittivity ADRS, with the rapid preparation and low cost greatly simplifying the design of MAs. The current concept is also suitable to design multi-band and broadband MAs worked at other bands, by changing the structural design of ADRS.

“…[8][9][10] At the microwave frequency range, the all dielectric FSSs are customarily designed with bandstop response. [11][12][13][14][15] In recent years, Barton adopted guided-mode resonance method to design all-dielectric FSSs for high-power microwave applications. 16,17 In this paper, we present the design of all-dielectric switchable FSSs based on the effective medium theory under quasi-static limit, [18][19][20] which can overcome the Ohmic loss and low breakdown voltage problem under high power.…”

Section: Introductionmentioning

confidence: 99%

A transmit/reflect switchable frequency selective surface based on all dielectric metamaterials

et al. 2015

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In this paper, we propose a novel transmit/reflect switchable frequency selective surface (FSS) in millimeter wave band based on the effective medium theory under quasi-static limit, which is designed with square-hole elements cut from continuum dielectric plates. The building elements of the surface are composed of all dielectric metamaterial rather than metal material. With proper structural design and parameters tuning, the resonance frequencies can be tuned appropriately. The frequency response of the surface can be switched from that of a reflecting structure to a transmitting one by rotating the surface 90 , which means under different incident polarizations. The reflective response can be realized due to the effect of electric and magnetic resonances. Theoretical analysis shows that the reflective response arises from impedance mismatching by electric and magnetic resonances. And the transmitting response is the left-handed passband, arises from the coupling of the electric and magnetic resonances. In addition, effective electromagnetic parameters and the dynamic induced field distributions are analyzed to explain the mechanism of the responses. The method can also be used to design switchable all-dielectric FSS with continuum structures in other frequencies.