Water-Based Reconfigurable Frequency Selective Rasorber With Thermally Tunable Absorption Band

Yan, Xiangxi; Kong, Xiangkun; Wang, Qi; Xing, Lei; Feng, Xue; Xu, Yan; Jiang, Shunliu

doi:10.1109/tap.2020.2982470

Cited by 58 publications

(31 citation statements)

References 45 publications

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“…This is perhaps why experimental studies of temperature tuning of WB MSs are scarce. 17,20,51,65 C. Metasurface absorbers Perhaps the most successful application of WB MSs is with absorption of microwaves. The high permittivity and losses of water make it an excellent material for both narrow and broadband absorbers, see Fig.…”

Section: B Resonances In Simple Metasurfaces For Wave Controlmentioning

confidence: 99%

Water-based devices for advanced control of electromagnetic waves

Jacobsen

Arslanagić

Lavrinenko

2021

Applied Physics Reviews

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Tunable devices are of great interest as they offer reconfigurability to their operation, although many of them employ rare and expensive materials. In a world with increasing focus on ecological compatibility and recyclability, immense efforts are being made to find bio-friendly alternatives. However, in some cases, one does not have to look far, because water, a high-permittivity dielectric at microwave frequencies, is readily available. Recent studies have shown that compact Mie resonators, which are the fundamental blocks in all-dielectric metamaterials and dielectric resonator antennas, can be realized with small water elements. In a variety of applied physics areas, encompassing frequencies from the radio to the optical parts of the spectrum, all-dielectric implementations have received immense attention. When it comes to water, its temperature-dependent permittivity and liquidity enable a multitude of unprecedentedly simple means to reconfigure and tune the resulting devices. Moreover, being a polar solvent, water easily dissolves various physiologically important electrolytes, which potentially can be exploited in a sensor design. Presently, we review water-based devices for advanced microwave control and sensing. We show and discuss the dynamic properties of water and examine the microwave scattering and absorption characteristics of single water elements. We investigate how such water elements can be employed in various microwave designs, including single resonators, metamaterials, metasurfaces, antennas, absorbers, and radio frequency components. The main complications of water are its losses, especially at higher microwave frequencies, and its stability. We discuss how to overcome these and show that even highly loss-sensitive modes, namely, toroidal modes and bound states in the continuum, can be realized with water-based devices. We believe that water-based devices usher the route to meet the UN proclaimed goals on global sustainability and human-friendly environment.

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Section: B Resonances In Simple Metasurfaces For Wave Controlmentioning

confidence: 99%

Water-based devices for advanced control of electromagnetic waves

Jacobsen

Arslanagić

Lavrinenko

2021

Applied Physics Reviews

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“…Water is the most common substance in nature. Because of its high dielectric constant caused by its dispersion characteristics, it has displayed a great potential in broadband absorbers [ 27 , 28 , 29 , 30 ]. In 2015, inspired by Rybin, Popa and Cummer, Andryieuskiet et al certificated the possibility of utilizing the dynamic characteristics of water in microwave all-dielectric metamaterial [ 31 , 32 , 33 ] for the first time.…”

Section: Introductionmentioning

confidence: 99%

Broadband Bi-Directional All-Dielectric Transparent Metamaterial Absorber

et al. 2022

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Water-based absorbers have shown great development potential in the past few years. In this paper, an all-dielectric transparent bi-directional water-based broadband metamaterial absorber is designed. The simulation results indicate that absorptance of the absorber is over 90% in 5.7–41.6 GHz, and its fraction bandwidth is 151.8%. The experimental results are greatly consistent with the simulations. The designed absorber has excellent performances of polarization insensitivity, oblique incidence stability and thermal stability. When the absorptance is more than 0.8, the maximum incident angle reaches 40° in TE mode and is over 60° in TM mode. In 0–80 °C, absorptance of the absorber is hardly changed. Because of the optical transparency of the designed absorber, it can be extensively used in stealth window weapons and electromagnetic compatibility equipment.

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“…In terms of their structures, the FSRs can be divided into two types. One is to use cascading multilayer 2-D frequencyselective surface (FSS) layers [10]- [24], and the other is employing 3-D structures where each unit is a multi-mode cavity [25]- [32]. In terms of performance, the FSR structures can also be divided into two types: 1) those with a one-sided absorption band with either lower or upper transmission band [5]- [7] and 2) those with a transmission band with two-sided absorption bands [2], [23].…”

Section: Introductionmentioning

confidence: 99%

3-D Single- and Dual-Polarized Frequency-Selective Rasorbers With Wide Absorption Bands Based on Stepped Impedance Resonator

Wang

Shen

et al. 2021

IEEE Access

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A 3-D frequency-selective rasorbers (FSR) with wide absorption bands at both sides of the transmission window based on stepped impedance resonator (SIR) is presented and investigated in this paper. The proposed FSR features thin thickness, wide absorption bands and lumped-element-free characteristics. The transmission channel is constructed from a parallel waveguide based on SIR to provide the transmission path and reduce the thickness of the whole structure. The absorption channel is filled with magnetic absorber to provide a wide absorption band, while meander-line in shunt connection with the absorber is used to avoid lumped components and to obtain a low insertion loss at the passband. The detailed design concept and analysis are illustrated and the fundamental operating principle of the FSR is demonstrated with the help of an equivalent circuit model (ECM). A design example is provided and it exhibits a passband at 7.1 GHz with a transmission bandwidth of 22.6% for less than 3 dB insertion loss and fractional bandwidth of 128.0% with reflectivity less than −10 dB. Moreover, one dual-polarized FSR is also designed and analyzed to generalize the design strategy. Both single-and dual-polarized prototypes are designed, fabricated, and measured to verify the design concept. Good agreement can be observed between the simulated and measured results.

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Water-Based Reconfigurable Frequency Selective Rasorber With Thermally Tunable Absorption Band

Cited by 58 publications

References 45 publications

Water-based devices for advanced control of electromagnetic waves

Water-based devices for advanced control of electromagnetic waves

Broadband Bi-Directional All-Dielectric Transparent Metamaterial Absorber

3-D Single- and Dual-Polarized Frequency-Selective Rasorbers With Wide Absorption Bands Based on Stepped Impedance Resonator

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