A Novel Integrated Switchable Absorber and Radiator

Li, Meiling; Yi, Zixuan; Luo, Yunfeng; Muneer, Badar; Zhu, Qi

doi:10.1109/tap.2016.2515121

Cited by 31 publications

(16 citation statements)

References 20 publications

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“…Metamaterials [ 7 ], consisting of artificial periodic subwavelength ‘atoms’ with the exotic electromagnetic properties that cannot be not found in nature materials [ 7 , 8 , 9 ], provide a brand new thought on designing microwave absorbers [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. Microwave metamaterial absorbers (MMAs) possess a tremendous ability to achieve broadband absorption [ 10 , 11 , 13 ], ultrathin thickness [ 11 ], and light weight [ 13 , 14 , 15 ] at the same time. It is also of great potential to integrate many other functions [ 13 , 16 ], for instance, transparence to visible light.…”

Section: Introductionmentioning

confidence: 99%

“…Microwave metamaterial absorbers (MMAs) possess a tremendous ability to achieve broadband absorption [ 10 , 11 , 13 ], ultrathin thickness [ 11 ], and light weight [ 13 , 14 , 15 ] at the same time. It is also of great potential to integrate many other functions [ 13 , 16 ], for instance, transparence to visible light. A great deal of research works have focused on MMAs and contributed a lot lately.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical Analysis and Design of Ultrathin Broadband Optically Transparent Microwave Metamaterial Absorbers

Deng

Muneer

et al. 2018

Materials

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Optically Transparent Microwave Metamaterial Absorber (OTMMA) is of significant use in both civil and military field. In this paper, equivalent circuit model is adopted as springboard to navigate the design of OTMMA. The physical model and absorption mechanisms of ideal lightweight ultrathin OTMMA are comprehensively researched. Both the theoretical value of equivalent resistance and the quantitative relation between the equivalent inductance and equivalent capacitance are derived for design. Frequency-dependent characteristics of theoretical equivalent resistance are also investigated. Based on these theoretical works, an effective and controllable design approach is proposed. To validate the approach, a wideband OTMMA is designed, fabricated, analyzed and tested. The results reveal that high absorption more than 90% can be achieved in the whole 6~18 GHz band. The fabricated OTMMA also has an optical transparency up to 78% at 600 nm and is much thinner and lighter than its counterparts.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Theoretical Analysis and Design of Ultrathin Broadband Optically Transparent Microwave Metamaterial Absorbers

Deng

Muneer

et al. 2018

Materials

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“…The use of an air layer greatly reduces the weight of the entire absorber. In the microwave anechoic chamber, a pair of double-ridge broadband horn antennas (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18) connected to a vector network analyzer (PNA-XN5244A) is used to measure the reflectivity of the proposed absorber. To ensure the remote field conditions, the distance between the absorber International Journal of Antennas and Propagation and antennas is set as 2 meters.…”

Section: Resultsmentioning

confidence: 99%

“…Perfect metamaterial absorbers were first proposed by Landy et al in 2008 [1], and these had broad application prospects in the fields of radar target stealth, antenna design, and electromagnetic protection [2][3][4][5]. The incident electromagnetic wave can be absorbed almost 100 percent by the rational design unit cell and dielectric materials.…”

Section: Introductionmentioning

confidence: 99%

UHF Metamaterial Absorber with Small-Size Unit Cell by Combining Fractal and Coupling Lines

Fan

Song

2018

International Journal of Antennas and Propagation

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We present a perfect UHF metamaterial absorber by combining coupling lines and fractal lines with a very small unit cell. The proposed absorber consists of a surface metal structure and metallic background plane, separated by a dielectric substrate and air. Simulation results show that the absorber has an absorption peak at 442 MHz with 99.73% absorptivity. The ratio between a lattice constant and resonance wavelength is 1/68, significantly less than the existing absorber. The design principle is introduced in detail according to the absorption mechanism of the proposed absorber. Moreover, the absorption peaks remain high with large angles of incidence for both TE and TM polarizations. Due to the small ratio, it can be widely used in radiation suppression for microwave relay communication such as mobile communication and wireless network by changing the parameters of the structure.

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“…In Reference , a switchable metamaterial has been proposed that operates between reflection and absorption. Another switchable design, in Reference , has been developed by Li et al that can be switched between absorber and radiator with the help of PIN diodes. Recently, this concept of multifunctionality was incorporated in polarization conversion .…”

Section: Introductionmentioning

confidence: 99%

Dual‐band multifunctional metasurface for absorption and polarization conversion

Dutta

Mitra

Ghosh

2020

Int J RF Microw Comput Aided Eng

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In this paper, a multifunctional metasurface capable of switching between an absorber and a polarization converter is presented. The active metasurface comprises diamond‐shaped unit cells embedded with PIN diodes. The characteristic of the design lies in its capability of exhibiting multifunctionality at the same frequency of operation. The structure behaves as an absorber and linear polarization converter around 15 and 17 GHz when the PIN diode is switched ON and OFF, respectively. The working principle is demonstrated with the help of simulated results. Finally, the design is fabricated and measured, and it is seen that the results are in accordance with that of the simulated ones, establishing the concept behind switchability of absorber and polarization converter.

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A Novel Integrated Switchable Absorber and Radiator

Cited by 31 publications

References 20 publications

Theoretical Analysis and Design of Ultrathin Broadband Optically Transparent Microwave Metamaterial Absorbers

Theoretical Analysis and Design of Ultrathin Broadband Optically Transparent Microwave Metamaterial Absorbers

UHF Metamaterial Absorber with Small-Size Unit Cell by Combining Fractal and Coupling Lines

Dual‐band multifunctional metasurface for absorption and polarization conversion

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