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Journal articles on the topic 'Microwave metamaterials'

Author: Grafiati

Published: 28 July 2024

Last updated: 31 July 2025

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1

Ruvio, Giuseppe. "State-of-the-art of Metamaterials: Characterization, Realization and Applications." Studies in Engineering and Technology 1, no. 2 (2014): 38. http://dx.doi.org/10.11114/set.v1i2.456.

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Metamaterials is a large family of microwave structures that produces interesting ε and μ conditions with huge implications for numerous electromagnetic applications. Following a description of modern techniques to realize epsilon-negative, mu-negative and double-negative metamaterials, this paper explores recent literature on the use of metamaterials in hot research areas such as metamaterial-inspired microwave components, antenna applications and imaging. This contribution is meant to provide an updated overview of complex microwave engineering for the generation of different types of metama

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Datta, Srijan, Saptarshi Mukherjee, Xiaodong Shi, et al. "Negative Index Metamaterial Lens for Subwavelength Microwave Detection." Sensors 21, no. 14 (2021): 4782. http://dx.doi.org/10.3390/s21144782.

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Metamaterials are engineered periodic structures designed to have unique properties not encountered in naturally occurring materials. One such unusual property of metamaterials is the ability to exhibit negative refractive index over a prescribed range of frequencies. A lens made of negative refractive index metamaterials can achieve resolution beyond the diffraction limit. This paper presents the design of a metamaterial lens and its use in far-field microwave imaging for subwavelength defect detection in nondestructive evaluation (NDE). Theoretical formulation and numerical studies of the me

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Ivanov, Andrei V., V. Yu Galkin, V. A. Ivanov, et al. "Metamaterials Fabricated of Amorphous Ferromagnetic Microwires: Negative Microwave Permeability." Solid State Phenomena 152-153 (April 2009): 333–36. http://dx.doi.org/10.4028/www.scientific.net/ssp.152-153.333.

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Microwave permeability of glass-coated ferromagnetic amorphous microwire exhibiting a weak negative magnetostriction has been studied. The diameter of the microwire was about 20 m and the diameter of the metal core was about 12 m. The microwire was wound to comprise a 7/3 washer-shaped composite sample with the volume fraction of magnetic constituent of about 10%. The permeability of the composite sample was measured in a coaxial line in the frequency range from 0.1 to 10 GHz. The composite was found to exhibit a negative permeability within the frequency range from approximately 0.7 to 1.5

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Tan, Plum, and Singh. "Surface Lattice Resonances in THz Metamaterials." Photonics 6, no. 3 (2019): 75. http://dx.doi.org/10.3390/photonics6030075.

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Diffraction of light in periodic structures is observed in a variety of systems including atoms, solid state crystals, plasmonic structures, metamaterials, and photonic crystals. In metamaterials, lattice diffraction appears across microwave to optical frequencies due to collective Rayleigh scattering of periodically arranged structures. Light waves diffracted by these periodic structures can be trapped along the metamaterial surface resulting in the excitation of surface lattice resonances, which are mediated by the structural eigenmodes of the metamaterial cavity. This has brought about fasc

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Karimi Mahabadi, Rayehe, Taha Goudarzi, Romain Fleury, Bakhtiyar Orazbayev, and Reza Naghdabadi. "Effect of mechanical nonlinearity on the electromagnetic response of a microwave tunable metamaterial." Journal of Physics D: Applied Physics 55, no. 20 (2022): 205102. http://dx.doi.org/10.1088/1361-6463/ac5209.

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Abstract Tunable metamaterials functionalities change in response to external stimuli. Mechanical deformation is known to be an efficient approach to tune the electromagnetic response of a deformable metamaterial. However, in the case of large mechanical deformations, which are usually required to fully exploit the potential of the tunable metamaterials, the linear elastic mechanical analysis is no longer suitable. Nevertheless, nonlinear mechanical analysis is missing in the studies of mechanically tunable metamaterials. In this paper, we study the importance of considering nonlinearity in me

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Cui, Tie Jun. "Microwave metamaterials." National Science Review 5, no. 2 (2017): 134–36. http://dx.doi.org/10.1093/nsr/nwx133.

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Chen, Tianyi, Wenxuan Tang, Jing Mu, and Tie Jun Cui. "Microwave Metamaterials." Annalen der Physik 531, no. 8 (2019): 1800445. http://dx.doi.org/10.1002/andp.201800445.

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8

Ghezzo, Fabrizia, Xiang Yi, Xi Geng Miao, Chun Lin Ji, and Ruo Peng Liu. "Broadband Microwave Transmission Achieved by Using Engineered Sandwich Materials." Advanced Materials Research 915-916 (April 2014): 493–97. http://dx.doi.org/10.4028/www.scientific.net/amr.915-916.493.

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In order to improve the transmission of the energy and broaden the frequency band of an electromagnetic wave in the microwave frequency spectrum propagating through a slab of a polymeric material, we designed an optimized material system where a periodic array of metamaterial unit cells are embedded into a polymeric medium in a sandwich-like configuration. The optimization method targeted the overall size and geometrical characteristics of the metamaterial element that can meet the desired energy transmission requirements given a certain materials thickness and materials dielectric properties.

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9

Sikder, Sunbeam Islam, Rashed Iqbal Faruque Mohammad, and Tariqul Islam Mohammad. "A New Double Negative Metamaterial for C-Band Microwave Applications." Advanced Materials Research 974 (June 2014): 33–37. http://dx.doi.org/10.4028/www.scientific.net/amr.974.33.

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Metamaterials are artificial materials that show extra ordinary electromagnetic properties which are not available in nature. It has opened a new era in the field of material science. It can be defined as an exotic electromagnetic structure that may show both negative permittivity and negative permeability simultaneously within a frequency range. Metamaterials with simultaneous negative permeability and permittivity are called Double Negative Metamaterials (DNG). In this paper, a new metamaterial unit cell structure has been proposed that exhibits resonance within frequency of C-band and shows

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Amalia, Riska, Defrianto Defrianto, Yan Soerbakti, Vepy Asyana, and Hewa Yaseen Abdullah. "Simulation and analysis of triangular structure metamaterial properties at microwave frequencies for medical sensor applications." Science, Technology and Communication Journal 5, no. 1 (2024): 15–20. https://doi.org/10.59190/stc.v5i1.286.

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The development of antenna technology is increasingly developing in medical sensor applications. The medical sensor antenna can be strengthened with a split ring resonator (SRR) metamaterial structure. Metamaterial is an artificial material that has high resonance manufacturing properties and this can potentially be implemented into microstrip antenna structures. This research aims to design, simulate and analyze the characteristics of metamaterials regarding the frequency function and performance of an antenna combination of 1 – 4 metamaterials with a triangular SRR ring radius of 3.5 mm. The

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Ghezzo, Fabrizia, Xiang Yi, Xi Geng Miao, Zhi Ya Zhao, and Ruo Peng Liu. "Electromagnetic Materials Design for the Enhancement of the Microwave Power Transmission through Polymeric Slabs." Applied Mechanics and Materials 492 (January 2014): 397–404. http://dx.doi.org/10.4028/www.scientific.net/amm.492.397.

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In order to improve the energy transmission of an electromagnetic wave in microwave frequency regime propagating through a slab made of a polymeric material, we integrated conductive metamaterials particles in the polymeric medium and used an optimization method for determining the overall size and geometrical characteristics of the metamaterial element that can meet the desired energy transmission requirements. The numerical results show that to attain high transparency the effective parameters of the homogenized medium can be manipulated as required by optimizing the geometry of the metamate

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Romade, Abhishek, Madhavi Netke, Sanket Vidhate, Harshal Katore, and Prasad Vethekar. "Brain Stroke Detection Using Machine Learning." International Journal for Research in Applied Science and Engineering Technology 11, no. 10 (2023): 2031–34. http://dx.doi.org/10.22214/ijraset.2023.56434.

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Abstract: We look at the skills of metamaterials technology to en- hance the first-rate of reconstructed photos for the hassle of mind stroke detection. We combine the metamaterial in our headscarf system for mind imaging in CST, and evaluate the reconstructed pix of the pinnacle model this is positioned in the microwave to- mographic head machine for the cases with and with out the incorporated metamaterial.

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Li, Y., M. Liu, J. Feng, et al. "PIC simulations of a frequency agile multicavity relativistic magnetron using irregular ring metamaterials driven by a transparent cathode." Physics of Plasmas 29, no. 7 (2022): 073107. http://dx.doi.org/10.1063/5.0089115.

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The design of an agile 5° irregular ring metamaterial for a 24-cavity relativistic magnetron with diffraction output (MDO) using single-stepped cavities for frequency switching is presented. By inserting six pieces of 5° irregular ring metamaterials in place of the traditional 5° vanes of a slow wave structure, the operating frequency can be tuned. When U = 400 kV high voltage is applied, with an applied magnetic field B = 0.36 T, the operating mode can be switched from the TE41 mode with a frequency of 2.585 GHz to the TE31 mode with a frequency of 2.282 GHz. The 24-cavity anode block is an e

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He, Yufang, Xiangtian Kong, Juntao He, Junpu Ling, and Mingyao Pi. "A novel all-metal metamaterial for constructing relativistic slow wave structure." AIP Advances 12, no. 3 (2022): 035345. http://dx.doi.org/10.1063/5.0083360.

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In recent vacuum electronic devices, metamaterials have shown an obvious advantage of miniaturization. Due to increasing miniaturization demand, research of metamaterials in high-power microwave (HPM) field is now also a hotspot. For better applications of metamaterials, there are still two issues to be solved, the low space limit current of the structure and the low uniformity of the working electric field. To solve these problems, we construct a novel all-metal metamaterial structure by applying a 45° rotational arrangement in space and a four-support rod structure. This new metamaterial str

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15

Marcelli, Romolo. "Equivalent Circuits for Microwave Metamaterial Planar Components." Sensors 24, no. 7 (2024): 2212. http://dx.doi.org/10.3390/s24072212.

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Metamaterial components and antennas are based on the general understanding that an artificial structure composed of adequately designed and manufactured elementary cells or arrays has unusual resonance and propagation properties. Metamaterials exhibit equivalent values of the dielectric constant and magnetic permeability that are both negative simultaneously, in contrast with ordinary materials. Single elements, periodic, or quasi-periodic configurations can be suitable for a metamaterial response. In this paper, equivalent circuits for microwave propagation and resonance are compared, derivi

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16

Luo, Tianhuan, Bo Li, Qian Zhao, and Ji Zhou. "Dielectric Behavior of Low Microwave Loss Unit Cell for All Dielectric Metamaterial." International Journal of Antennas and Propagation 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/291234.

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With a deep study of the metamaterial, its unit cells have been widely extended from metals to dielectrics. The dielectric based unit cells attract much attention because of the advantage of easy preparation, tunability, and higher frequency response, and so forth. Using the conventional solid state method, we prepared a kind of incipient ferroelectrics (calcium titanate, CaTiO3) with higher microwave permittivity and lower loss, which can be successfully used to construct metamaterials. The temperature and frequency dependence of dielectric constant are also measured under different sintering

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17

Peng, Mengyue, Faxiang Qin, Liping Zhou, Huijie Wei, Zihao Zhu, and Xiaopeng Shen. "Material–structure integrated design for ultra-broadband all-dielectric metamaterial absorber." Journal of Physics: Condensed Matter 34, no. 11 (2021): 115701. http://dx.doi.org/10.1088/1361-648x/ac431e.

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Abstract Material and structure are the essential elements of all-dielectric metamaterials. Structure design for specific dielectric materials has been studied while the contribution of material and synergistic effect of material and structure have been overlooked in the past years. Herein, we propose a material–structure integrated design (MSID) methodology for all-dielectric metamaterials, increasing the degree of freedom in the metamaterial design, to comprehensively optimize microwave absorption performance and further investigate the contribution of material and structure to absorption. A

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18

Dong, Shufang, Qi Hu, Weixu Yang, et al. "Direction-reversible asymmetric transmission with tunable chiral metamaterial." Applied Physics Letters 121, no. 19 (2022): 191701. http://dx.doi.org/10.1063/5.0122878.

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The asymmetric transmission of electromagnetic waves can be flexibly manipulated by chiral metamaterials hybridized with tunable materials or active components. Here, we propose the concept of a direction-reversible tunable asymmetric transmission effect realized by chiral metamaterials. As the proof-of-concept, twisted metallic meta-sheets consisting of split-ring resonators incorporated with active diodes is designed for linearly polarized operation in the microwave region. The direction of asymmetric transmission depending on the working states of the loaded diodes can be switched by the ex

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Poplavko, Yu M., Yu V. Didenko, and D. D. Tatarchuk. "Metamaterials in Relation to Microwaves." Ukrainian Journal of Physics 70, no. 7 (2025): 487. https://doi.org/10.15407/ujpe70.7.487.

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Metamaterials are defined as artificial materials composed of periodic structural units to obtain their unusual properties that are not usually found in nature. Of particular interest in the microwave range are materials that interact with the electromagnetic field, as if they would have negative permittivity and/or magnetic permeability. In ordinary materials, negative permittivity or magnetic permeability is possible in the frequency range of antiresonances of polarization or magnetization. The paper examines the possibility to classify metamaterials by the negative values of their susceptib

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Quan, Peng, Chun Long, Jun Zhou, et al. "Natural wood-based metamaterials for highly efficient microwave absorption." Holzforschung 76, no. 4 (2022): 368–79. http://dx.doi.org/10.1515/hf-2021-0088.

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Abstract While wood substances that contain water have shown a dielectric effect, they have never been directly proposed as a microwave absorption material to reduce artificial electromagnetic pollution. In this study, the microwave absorption efficiency of wood that contains water was investigated based on its dielectric properties in the microwave frequency range to optimize the parameters of wood unit cells, including the orientation, moisture content (MC) and thickness. Subsequently, inspired by the design concept of electromagnetic metamaterials, single-layer wood unit cells containing mo

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21

Asenov, Tatjana, Nebojsa Doncov, and Bratislav Milovanovic. "Application of metamaterials for the microwave antenna realizations." Serbian Journal of Electrical Engineering 9, no. 1 (2012): 1–7. http://dx.doi.org/10.2298/sjee1201001a.

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In this paper, the application of left-handed metamaterials for the realization of microwave antennas has been considered. Special emphasis is placed on lens antennas based on gradient-index metamaterials, and their advantages and enhanced features in comparison with conventional microwave antennas are highlighted.

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Chaturvedi, Pratik, Keng Hsu, Shu Zhang, and Nicholas Fang. "New Frontiers of Metamaterials: Design and Fabrication." MRS Bulletin 33, no. 10 (2008): 915–20. http://dx.doi.org/10.1557/mrs2008.199.

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AbstractArtificially engineered metamaterials have emerged with properties and functionalities previously unattainable in natural materials. The scientific breakthroughs made in this new class of electromagnetic materials are closely linked with progress in developing physics-driven design and novel parallel fabrication methods. For example, a smooth superlens has been demonstrated with 30-nm imaging resolution, or 1/12 of the corresponding wavelength, far below the diffraction limit. Similarly, a photoswitchable optical negative-index material has been printed, showing a remarkable tuning ran

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Suresh Kumar, N., K. Chandra Babu Naidu, Prasun Banerjee, T. Anil Babu, and B. Venkata Shiva Reddy. "A Review on Metamaterials for Device Applications." Crystals 11, no. 5 (2021): 518. http://dx.doi.org/10.3390/cryst11050518.

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Metamaterials are the major type of artificially engineered materials which exhibit naturally unobtainable properties according to how their microarchitectures are engineered. Owing to their unique and controllable effective properties, including electric permittivity and magnetic permeability, the metamaterials play a vital role in the development of meta-devices. Therefore, the recent research has mainly focused on shifting towards achieving tunable, switchable, nonlinear, and sensing functionalities. In this review, we summarize the recent progress in terahertz, microwave electromagnetic, a

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Pham Van, Hai, Tu Vu Minh, Van Mai Ngoc, Dien Pham Van, and Cuong Tran Manh. "OPTIMIZATION OF BROADBAND MICROWAVE ABSORBER USING GENETIC ALGORITHM." Journal of Science Natural Science 65, no. 6 (2020): 90–97. http://dx.doi.org/10.18173/2354-1059.2020-0033.

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In recent years, scientists have been focusing on coding metamaterials absorbers to take full advantage of digital technology. This technology is mostly based on the fact that the absorption spectrum of a full-sized metamaterial varies with the different number and position of the defect elements in conventional unit cells (UCs) in it. However, both of their traditional methods namely simple random sample and combination of fundamental meta-block struggle with the enormous number of possible configurations especially when the number of UCs increases. In this article, we represent 5 configurati

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Al Ajmi, Haitham, Mohammed Bait-Suwailam, Mahmoud Masoud, and Muhammad Shafiq. "EFFICIENCY ENHANCEMENT OF PHOTOVOLTAIC SOLAR CELLS USING METAMATERIALS ABSORBING SCREEN." Journal of Engineering Research [TJER] 19, no. 2 (2023): 85–94. http://dx.doi.org/10.53540/tjer.vol19iss2pp85-94.

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This paper proposes a novel technique for the efficiency enhancement of photovoltaic (PV) solar cells using metamaterials absorbing screens. This kind of engineered material comprises resonant metallic rings that are printed on a host low-loss dielectric substance and made periodic in a two-dimensional lattice. The absorbing screen has been carefully designed, and its retrieved effective constitutive parameters, effective electric permittivity ϵeff and effective magnetic permeability µeff, are integrated within a numerically modelled amorphous-Silicon-based PV solar cell structure as an impeda

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Thang, Kieu Vu, Nguyen Thanh Tung, and Ewald Janssens. "MICROWAVE METAMATERIAL-BASED SUPERLENS FOR ENERGY HARVESTING APPLICATIONS." Vietnam Journal of Science and Technology 56, no. 6 (2018): 698. http://dx.doi.org/10.15625/2525-2518/56/6/12722.

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Superlens imaging has been known as one of the most intriguing applications of metamaterials due to its capability of sub-wavelength imaging. In this report, we numerically demonstrate the possibility to make an amplifying superlens, which can focus and consequently enhance electromagnetic signals emitted at GHz frequencies. Simulations using the finite integration technique are performed to explore the amplifying mechanism of the proposed superlens. It is found that the focused signals can be considerably intensified at a selected position. The results show potential uses of metamaterial supe

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Alharbi, Amal H., Abdelaziz A. Abdelhamid, Abdelhameed Ibrahim, et al. "Improved Dipper-Throated Optimization for Forecasting Metamaterial Design Bandwidth for Engineering Applications." Biomimetics 8, no. 2 (2023): 241. http://dx.doi.org/10.3390/biomimetics8020241.

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Metamaterials have unique physical properties. They are made of several elements and are structured in repeating patterns at a smaller wavelength than the phenomena they affect. Metamaterials’ exact structure, geometry, size, orientation, and arrangement allow them to manipulate electromagnetic waves by blocking, absorbing, amplifying, or bending them to achieve benefits not possible with ordinary materials. Microwave invisibility cloaks, invisible submarines, revolutionary electronics, microwave components, filters, and antennas with a negative refractive index utilize metamaterials. This pap

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Yang, Zhuo, Zhi Sheng Jing, Qiang Yong Su, Guo Wei Qin, and Ze Long Zhou. "Design, Simulation and Experiment of Polarization Transformers Based on Twisted Chiral Metamaterials." Advanced Materials Research 989-994 (July 2014): 1196–99. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.1196.

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In this paper, we proposed a metamaterial polarization transformer which exhibits linear dichroism and linear conversion dichroism simultaneously. Through simulation and experiment studies in the microwave regime, it was found that only cross-polarization transmissions of x-polarized waves and co-polarization transmissions of y-polarized waves are allowed in the designed structures. As a result, the proposed metamaterials can transform any polarizations into y-polarizations with signal-to-noise ratios over 20 dB and transmissions over 0.6.

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Burokur, Shah Nawaz, and André de Lustrac. "Negative index from asymmetric metallic cut wire pairs metamaterials." International Journal of Microwave and Wireless Technologies 1, no. 6 (2009): 521–27. http://dx.doi.org/10.1017/s1759078709990808.

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Metamaterials made of exclusively metallic cut wire pairs have been experimentally demonstrated to exhibit a negative refractive index at optical frequencies. However, other related works on slightly different wire and plate pairs have not shown a negative index. In this paper, we present the analogy between previously reported S-shaped metamaterials and asymmetric cut wire pairs by a simple unifying approach. These two structures present a negative index for some geometrical configurations. Using simulations and experimental measurements in the microwave domain, we investigate the material pr

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Li, Jian, Yuedan Zhou, Fengwei Peng, et al. "High-FOM Temperature Sensing Based on Hg-EIT-Like Liquid Metamaterial Unit." Nanomaterials 12, no. 9 (2022): 1395. http://dx.doi.org/10.3390/nano12091395.

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High-performance temperature sensing is a key technique in modern Internet of Things. However, it is hard to attain a high precision while achieving a compact size for wireless sensing. Recently, metamaterials have been proposed to design a microwave, wireless temperature sensor, but precision is still an unsolved problem. By combining the high-quality factor (Q-factor) feature of a EIT-like metamaterial unit and the large temperature-sensing sensitivity performance of liquid metals, this paper designs and experimentally investigates an Hg-EIT-like metamaterial unit block for high figure-of-me

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Deshmukh, Prof Baliram. "Brain Stroke Detection Using Machine Learning." International Journal for Research in Applied Science and Engineering Technology 12, no. 4 (2024): 3618–26. http://dx.doi.org/10.22214/ijraset.2024.60155.

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Abstract: We look at the skills of metamaterials technology to enhance the first-rate of reconstructed photos for the hassle of mind stroke detection. We combine the metamaterial in our headscarf system for mind imaging in CST, and evaluate the reconstructed pix of the pinnacle model this is positioned in the microwave tomographic head machine for the cases with and with out the incorporated metamaterial. For photograph reconstruction we observe the distorted Born iterative technique (DBIM) mixed with two-step iterative shrinkage/thresholding (TwIST) set of rules. Our consequences imply that u

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32

Statsenko, Lyubov G., O. A. Pugovkina, A. R. Galay, and Denis A. Kuzin. "Designing Microwave Filters Using Metamaterials." Key Engineering Materials 806 (June 2019): 167–72. http://dx.doi.org/10.4028/www.scientific.net/kem.806.167.

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The possibility to use the split ring resonator – SRR in a microwave filter design is investigated. SRR is made from non-ferrous metals, is one of the variants of the inclusions in the metamaterial. The periodic SRR structure modifies the permittivity and permeability of the source material, to obtain a negative refractive index. These unique properties are widely used in microwave technology, because they allow to create devices with improved performance and extended functionality. Microstrip line with etched SRR on ground plane is considered. The equivalent circuit model for SRR is shown. Th

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Wiltshire, M. C. K., and R. R. A. Syms. "Measuring noise in microwave metamaterials." Journal of Applied Physics 123, no. 17 (2018): 174901. http://dx.doi.org/10.1063/1.5018398.

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Panina, L. V., M. Ipatov, V. Zhukova, A. Zhukov, and J. Gonzalez. "Microwave metamaterials with ferromagnetic microwires." Applied Physics A 103, no. 3 (2011): 653–57. http://dx.doi.org/10.1007/s00339-010-6198-7.

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Bilotti, Filiberto, and Levent Sevgi. "Metamaterials: RF and microwave applications." International Journal of RF and Microwave Computer-Aided Engineering 22, no. 4 (2012): 421. http://dx.doi.org/10.1002/mmce.20633.

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Öziş, E., A. V. Osipov, and T. F. Eibert. "Metamaterials for Microwave Radomes and the Concept of a Metaradome: Review of the Literature." International Journal of Antennas and Propagation 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/1356108.

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A radome is an integral part of almost every antenna system, protecting antennas and antenna electronics from hostile exterior conditions (humidity, heat, cold, etc.) and nearby personnel from rotating mechanical parts of antennas and streamlining antennas to reduce aerodynamic drag and to conceal antennas from public view. Metamaterials are artificial materials with a great potential for antenna design, and many studies explore applications of metamaterials to antennas but just a few to the design of radomes. This paper discusses the possibilities that metamaterials open up in the design of m

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Ge, Tingting, Zhijin Li, Wei Song, and Xinqing Sheng. "Design and Simulation of Photo-excited Tunable Perfect Absorber Based on Semiconductor-incorporated Metamaterial Structure." Journal of Physics: Conference Series 2219, no. 1 (2022): 012030. http://dx.doi.org/10.1088/1742-6596/2219/1/012030.

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Abstract The perfect metamaterial absorber with sandwich structure is capable to realize nearly 100% microwave absorption. We designed and simulated a photo-excited tunable perfect absorber based on semiconductor-incorporated metamaterials using HFSS (Ansoft). This absorber composes of semiconductor Ge in designed pattern in the unit cell. Under different pump power of the incident laser light, the conductivity of Ge on the metamaterial varies. In this way, the absorption frequency of the absorber can be tuned. Simulation results showed that, under the two pump light conditions, the absorber i

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Karthik Reddy, G., T. Vijetha, GVS Manoj Kumar, Syam Babu, and Ch Babaiah. "Antenna Optimization Using Metamaterials." Journal of Physics: Conference Series 2837, no. 1 (2024): 012018. http://dx.doi.org/10.1088/1742-6596/2837/1/012018.

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Abstract Metamaterials are artificial structures engineered to exhibit electromagnetic properties not found in natural materials. These materials offer a diverse range of characteristics, including negative refractive index, reverse radiation, and electromagnetic cloaking. These unique properties find applications in microwave and optical domains, enabling improvements in antenna performance, the design of microwave filters, and the creation of flat optical lenses, among others. This study focuses on utilizing metamaterials to enhance antenna performance by boosting gain, reducing mutual coupl

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Pasternak, Yu, E. Ishchenko, V. Pendyurin, and S. Fedorov. "Use of Active Metamaterial as a Phase Shifter Integrated into the Waveguide." Proceedings of Telecommunication Universities 7, no. 1 (2021): 54–62. http://dx.doi.org/10.31854/1813-324x-2021-7-1-54-62.

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Active metamaterials usage is one of the most promising ways to control the characteristics of antennas, waveguides, and other microwave devices. This article proposes the controlled metamaterial design in the form of an electromagnetic crystal with switches located at the nodes of the crystal lattice. This metamaterial application for changing the fundamental mode phase of the WR-137 waveguide is investigated. Controlling the characteristics of the metamaterial is performed by switching pin diodes at the nodes of the lattice, so this control method allows you to achieve a high speed system, a

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Berka, Mohammed, Zoubir Mahdjoub, and Mourad Hebali. "New design of dual-band bandpass microwave filter based on electromagnetic effect of metamaterial resonators." Journal of Electrical Engineering 69, no. 4 (2018): 311–16. http://dx.doi.org/10.2478/jee-2018-0044.

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Abstract Recent research on microwave filters show that there are constraints in their design; Effective solutions are needed for high-quality systems. In this manuscript, a new design of microwave dual-band bandpass filter is presented. The complementary metamaterial resonators with magnetic activity and negative permeability (µ < 0) are engraved on the lower ground plane and coplanar guides are maintained in the upper plane of the filter. Both (CSRRs) used have different shapes and dimensions from one another to have a dual band-pass behavior of our filter outside the range 5 to 6 GHz to

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BOURAS, Khedidja, Abdelhadi LABIAD, Chaker SALEH, and Mouloud BOUZOUAD. "Emulation of metamaterial waveguides." Algerian Journal of Signals and Systems 3, no. 3 (2018): 117–24. http://dx.doi.org/10.51485/ajss.v3i3.67.

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In this work, we are interested by emulating metamaterial microwave waveguides which behave like conventional metallic ones. We use metamaterial layers based on two types of unit cells. The first one is a connected cross type unit cell which leads to a metamaterial with a near zero refraction index (n1≈ 0). The second one is a disconnected cross type unit cell which leads to a metamaterial with a refraction index greater than unity (n2 >1). With these two type of metamaterials we can define, in the metamaterial layer, different sections each one can have a refraction index equal to n1 or n2

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Bagdasarian, Alexander, Mikhail Samoylovich, Alpik Mkrtchyan, et al. "Technology of Synthesis of Opal Matrix Metamaterials." Advanced Materials Research 1084 (January 2015): 58–60. http://dx.doi.org/10.4028/www.scientific.net/amr.1084.58.

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This work describes the technology of growing crystal metamaterials spinel ferrites. Metamaterials is one of the most promising classes of materials for use in optical devices in the microwave range and features, which can be used for creation of controlled attenuators, phase shifters, and other devices.

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Singh, Prabal P., Khem B. Thapa, and Satyender Singh Yadav. "OPTICAL PROPERTIES OF PHOTONIC METAMATERIALS AND POTENTIAL APPLICATIONS." International Journal of Science and Social Science Research 1, no. 1 (2023): 30–37. https://doi.org/10.5281/zenodo.13328088.

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In this article, we have been studied, optics of single metamaterial and photonic metamateria. Generally singlemetamaterial is a composite material of negative permittivity and negative permeability or magnetic permeability which wasexperimentally realised in microwave region. But in my work, I have tried to understand the optics of periodic structure ofdielectric and metamaterial i.e. photonic metamaterial for their potential applications. We show that a single layer of photonicmetamaterial has a broad reflection property with a modest proportion of tunnelling using dispersion relation values

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Khuyen, Bui Xuan, Vu Thi Hong Hanh, Bui Son Tung, et al. "Narrow/Broad-Band Absorption Based on Water-Hybrid Metamaterial." Crystals 10, no. 5 (2020): 415. http://dx.doi.org/10.3390/cryst10050415.

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In this work, the possibility of a switchable metamaterial absorber is proposed to control absorption bandwidth in the WiMAX/LTE (worldwide interoperability for microwave access/long term evolution) band, by taking advantage of the low cost and myriad structural configurations afforded by water-based metamaterials. By exploiting truncated cone-type resonators, the fractional bandwidth of 27.6% of absorption spectrum can be adjusted flexibly to be 7.4% of the narrow-band absorption depending on the volume of injected water, in both simulation and experiment at room temperature. In particular, t

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Kaz'min, A. I., and P. A. Fedjunin. "THE SIMULATION MODEL FOR EVALUATING THE ACCURACY OF MEASURING THE ELECTROPHYSICAL PARAMETERS OF METAMATERIALS BY THE METHOD OF SURFACE ELECTROMAGNETIC WAVES." Kontrol'. Diagnostika, no. 285 (March 2022): 26–32. http://dx.doi.org/10.14489/td.2022.03.pp.026-032.

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In this paper the simulation model that allows one to evaluating a accuracy and reliability of measuring the local values of electrophysical and geometric parameters of any types of flat-layered samples of metamaterials on a metal substrate by the method of surface electromagnetic waves. The simulation model is implemented on the basis of the CST Microwave studio electrodynamic modeling system and the Matlab system. The results of simulation modeling on the measurement of metamaterial parameters based on rectangular SRR-elements with a region of negative refraction in the frequency range 10.06

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Kr Kaushik, Awanish, Anubhav Kumar, and R. L. Yadava. "Metamaterial Transmission Line-for Designing a Microstrip Patch Antenna." International Journal of Engineering & Technology 7, no. 4.39 (2018): 936–41. http://dx.doi.org/10.14419/ijet.v7i4.39.27732.

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In this paper, the fundamental properties, limit and structure of metamaterial express that the "meta-transmission line (meta-TL) is utilized for solace implies metamaterial transmission lines are reasonably homogenous structures, which have properties that don't appear in regular transmission lines. It intertwines all the transmission line structures which have interesting properties not existing in ordinary RH-TL, for instance, LH TL, CRLH TL, SRR \CSRR-stacked TL and further. As diverged from various materials, the Metamaterials are counterfeit metallic structures having meanwhile negative

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Jokanovic, Branka, Riana H. Geschke, Theunis S. Beukman, and Vojislav Milosevic. "Metamaterials: Characteristics, Design and Microwave Applications." SAIEE Africa Research Journal 101, no. 3 (2010): 82–92. http://dx.doi.org/10.23919/saiee.2010.8531553.

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Ipatov, Mihail, V. Zhukova, Arcady P. Zhukov, and Larissa V. Panina. "Microwave Metamaterials Containing Magnetically Soft Microwires." Advances in Science and Technology 75 (October 2010): 224–29. http://dx.doi.org/10.4028/www.scientific.net/ast.75.224.

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In this paper we discuss the development of metamaterials containing ferromagnetic microwires which makes it possible to tune the electromagnetic response in the microwave frequency band. Metallic wire media are known to demonstrate very strong dispersion of the effective permittivity at GHz frequencies. At certain conditions, the magnetic properties of constituent wires may strongly contribute to the system losses owing to the magnetoimpedance effect, resulting in unusual dependence of the permittivity on the external magnetic or mechanical stimuli. We also demonstrate the possibility to desi

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SANADA, Atsushi. "Composite Right/Left-Handed Microwave Metamaterials." Review of Laser Engineering 44, no. 1 (2016): 32. http://dx.doi.org/10.2184/lsj.44.1_32.

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Rahim, Tariq, and Jia Dong Xu. "Analysis of Double Layer Cross Strips with Chiral Configuration Exhibiting Negative Refractive Index." International Journal of Engineering Research in Africa 22 (February 2016): 128–34. http://dx.doi.org/10.4028/www.scientific.net/jera.22.128.

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Metamaterials composed of metallic strips on both side of the substrate are analyzed at microwave frequencies. The rectangular shaped metallic foils are rotated by 90o with respect to their adjacent metal strip on each side of the substrate. The twist angle between the cross strips on opposite sides of substrate is 40o. The proposed structure exhibits the properties of chiral medium such as optical activity and circular dichroism due to their cross coupling between the electric and magnetic fields. The rectangular shaped chiral objects can be easily fabricated on double side substrate. Both tr

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