Mingde Feng

Air Force Engineering University

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Jiafu Wang

Air Force Engineering University

Shaobo Qu

Air Force Engineering University

Hua Ma

Air Force Engineering University

Jieqiu Zhang

Southwest Medical University

Hongya Chen

Air Force Engineering University

Mingbao Yan

Air Force Engineering University

Jun Wang

Air Force Engineering University

Liyang Li

Kunming University of Science and Technology

Sai Sui

Air Force Engineering University

Zhuo Xu

Northeast Electric Power University

Cooperative Institutions

Air Force Engineering University

Xi'an Jiaotong University

China XD Group (China)

Suzhou Research Institute

Southeast University

Northwestern Polytechnical University

Chinese Academy of Sciences

University of Electronic Science and Technology of China

Wuhan University of Technology

Zhejiang University

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An extremely wideband and the larger-incident angle three dimensional metamaterial absorber

2018 International Applied Computational Electromagnetics Society Symposium - China (ACES) (2019)

Wenjie Wang Minbao Yan Cuilian Xu Aixia Wang Jinming Jiang

In this paper, we present a three dimension (3D) metamaterial absorber (MMA) based on the cross resistive film array. The MMA consists of the cross resistive film backed by a cross substrate and a metallic ground plane. Because of MMA has symmetrical structure, so the proposed MMA has polarization independent property in wideband absorption. Moreover, the designed MMA possesses wide angle domain property. By simulating, we obtain the absorption above 90% in the frequency range from 8 GHz to 50 GHz. Moreover, the proposed absorber possesses extremely broadband, especially in high frequency absorptivity is equal to one. Based on its broadband and polarization independent properties, it is expected that the proposed design may find potential applications, such as electromagnetic interference and stealth technologies.

Ground plane

Resistive touchscreen

Wideband

Molar absorptivity

Radar cross-section

10.23919/aces48530.2019.9060498

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Citations (1)

Extraordinary transmission of electromagnetic waves through sub-wavelength slot arrays mediated by spoof surface plasmon polaritons

Applied Physics Letters (2016)

Yongqiang Pang Jiafu Wang Hua Ma Mingde Feng Song Xia

One-dimensional gratings consisting of sub-wavelength metallic slot arrays have been widely applied in the design of novel devices due to their polarization-selective characteristics. When the incident electric field is polarized along the slot direction, the slot arrays are opaque, behaving like a metal surface. Here we propose a scheme of making slot arrays transparent for electromagnetic (EM) waves, which is achieved by the incorporation of corrugated metal strip arrays. Incident waves are first converted into spoof surface plasmon polaritons (SSPPs) propagating along the strips. Since SSPPs confine EM fields in sub-wavelength scales, EM waves can penetrate through the sub-wavelength slots. High transmission was thus obtained, with an efficiency as high as 95%. Moreover, position and bandwidth of the transmission band can be tailored by adjusting the groove depth and the slot width, respectively. It is expected that the design may find potential applications in the multifunctional devices with frequency- and polarization-selective features.

Opacity

STRIPS

10.1063/1.4948970

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Citations (15)

Synthetic design for a microwave absorber and antireflection to achieve wideband scattering reduction

Journal of Physics D Applied Physics (2018)

Sai Sui Hua Ma Jiafu Wang Mingde Feng Yongqiang Pang

This work proposes a synthetic design for a microwave absorber and antireflection to achieve reduction of wideband scattering. Simultaneous control of the absorption and scattering pattern of metasurfaces can be achieved by theoretical analysis and calculation aimed at improving the reduction of backward reflection. With a topologically optimized design and antenna array synthesis, customized absorption and an optimal arrangement can be achieved over a broad spectrum within an integrative optimization procedure. To validate the design method, a wideband low radar cross-section metasurface is proposed, for which good agreement is observed between simulations and experiment with pronounced reflection suppression from 9 to 23.9 GHz. This work reveals the opportunity for use of a metasurface in effective manipulation of microwaves and a synthesis optimization method for designing a high-performance flexible low-scattering platform.

Wideband

10.1088/1361-6463/aaeb12

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Citations (25)

Thermally stable ultra-thin and refractory microwave absorbing coating

Ceramics International (2021)

Shixin Zhao Hua Ma Tengqiang Shao Jun Wang Lei Zhang

Reflection loss

Diffractometer

Atmospheric temperature range

Thermal Stability

10.1016/j.ceramint.2021.03.047

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Citations (21)

Polarization Conversion Abnormal Reflection by All-dielectric Phase Gradient Metasurface Based on High-permittivity Ceramic

Liyang Li Mingde Feng Jiafu Wang Jiafu Wang Jieqiu Zhang

In this paper, we proposed and realized polarization conversion abnormal reflection in microwave regime at certain frequency through all-dielectric phase gradient metasurface (PGM) based on high-permittivity ceramics. An abnormal reflection of a phase gradient metasurface is designed using an array of sub-wavelength structures which are made of three quarters cylinders with different sizes. A cross-polarized reflection is observed simultaneously. According to the generalized reflection law, simulated results agree well with the theoretical predictions. The proposed method provides another way to design phase gradient metasurface via high-permittivity ceramics, which may broaden the way of using in practical applications.

Reflection

10.1109/piers-fall48861.2019.9021860

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Citations (1)

Wi-Fi応用のための新しい小型二重ストップバンドFSS(周波数選択板)【Powered by NICT】

IEEE Conference Proceedings (2016)

Mingbao Yan Qu Shao-Bo Wang Jia-Fu Mingde Feng Wang Wenjie

Source

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Citations (0)

Origami-inspired building block and parametric design for mechanical metamaterials

Journal of Physics D Applied Physics (2016)

Wei Xiang Jiang Hua Ma Mingde Feng Leilei Yan Jiafu Wang

An origami-based building block of mechanical metamaterials is proposed and explained by introducing a mechanism model based on its geometry. According to our model, this origami mechanism supports response to uniaxial tension that depends on structure parameters. Hence, its mechanical properties can be tunable by adjusting the structure parameters. Experiments for poly lactic acid (PLA) samples were carried out, and the results are in good agreement with those of finite element analysis (FEA). This work may be useful for designing building blocks of mechanical metamaterials or other complex mechanical structures.

Mechanical design

Block structure

Parametric design

10.1088/0022-3727/49/31/315302

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Citations (14)

High temperature absorbing coatings with excellent performance combined Al2O3 and TiC material

Journal of the European Ceramic Society (2020)

Tengqiang Shao Hua Ma Jun Wang Mingde Feng Mingbao Yan

Reflection loss

10.1016/j.jeurceramsoc.2020.01.036

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Citations (50)

Achieving all-dielectric metamaterial band-pass frequency selective surface via high-permittivity ceramics

Applied Physics Letters (2016)

Liyang Li Jiafu Wang Hua Ma Jun Wang Mingde Feng

In this paper, we propose the design of all-dielectric metamaterial band-pass frequency selective surfaces (FSSs) using high-permittivity ceramics based on effective medium theory and dielectric resonator theory. The band-pass response can be determined by the permittivity of the dielectric material, the periodicity, and geometrical shape of the dielectric unit cell. As an example, a band-pass FSS composed of H shaped ceramic resonators is demonstrated. Both the simulation and experiment results show that the FSS can achieve a pass band in X-band. Since such FSSs are made of low-loss high-permittivity ceramics, they are of important application values, especially in high-temperature, high-power environments. The design method can be readily extended to the design of FSSs in other frequencies.

Dielectric loss

Dielectric resonator

Frequency band

Radome

10.1063/1.4944644

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Citations (32)

Single-layer metasurface for ultra-wideband polarization conversion: bandwidth extension via Fano resonance

Scientific Reports (2021)

Zhongtao Zhang Jiafu Wang Xinmin Fu Yuxiang Jia Hongya Chen

Abstract In this paper, we propose a method of designing ultra-wideband single-layer metasurfaces for cross-polarization conversion, via the introduction of Fano resonances. By adding sub-branches onto the unit cell structure, the induced surface currents are disturbed, leading to coexistence of both bright and dark modes at higher frequencies. Due to the strong interaction between the two modes, Fano resonance can be produced. In this way, five resonances in all are produced by the single-layer metasurface. The first four are conventional and are generated by electric and magnetic resonances, whereas the fifth one is caused by Fano resonance, which further extends the bandwidth. A prototype was designed, fabricated and measured to verify this method. Both the simulated and measured results show that a 1:4.4 bandwidth can be achieved for both x- and y -polarized waves, with almost all polarization conversion ratio (PCR) above 90%. This method provides an effective alternative to metasurface bandwidth extension and can also be extended to higher bands such as THz and infrared frequencies.

Fano resonance

Fano plane

Wideband

Bandwidth extension

10.1038/s41598-020-79945-0

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Citations (43)