Intelligent Radome Design With Multilayer Composites to Realize Asymmetric Transmission of Electromagnetic Waves and Energy Isolation

Yuan, Jianmin; Kong, Xiangkun; Chen, Kai; Shen, Xueqi; Wang, Qi; Chen, Wu

doi:10.1109/lawp.2020.3008008

Cited by 13 publications

(3 citation statements)

References 18 publications

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“…Based on the previous works, 3,24 the BFSA is designed. The BFSA is composed of the lossy layer and polarized rotator layer which are separated by an air gap with a thickness of t 2 = 7 mm, as shown in Figure 2.…”

Section: Analysis and Design Of The Structurementioning

confidence: 99%

Band‐notched frequency‐selective absorber with linear polarization rotation function

Jin

Kong

Wang

et al. 2022

Int J RF Mic Comp-Aid Eng

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This article presents a novel band‐notched frequency‐selective absorber (BFSA) with linear polarization rotation function in‐band and absorption out‐of‐band. When used as an antenna reflector, the BFSA can not only reduce RCS outside of the antenna's working band, but also reduce co‐polarized RCS within the working band and improve cross‐polarized reflection. The BFSA realizes −0.41 dB linear polarization‐rotating reflection at 4.5 GHz. In the upper and lower bands, the BFSA realizes a broad absorption function from 2.2 GHz to 4.1 GHz and 5.03 GHz to 6.5 GHz. The fractional bandwidth of linear co‐polarization reflection is 98.8% with 10 dB reflection reduction. The experimental measurements are conducted to validate the polarization conversion of the band‐notched absorbers, and good agreement between theory and measurement results is observed.

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Section: Analysis and Design Of The Structurementioning

confidence: 99%

Band‐notched frequency‐selective absorber with linear polarization rotation function

Jin

Kong

Wang

et al. 2022

Int J RF Mic Comp-Aid Eng

Self Cite

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“…F requency selective rasorbers (FSRs), which can transmit in-band electromagnetic (EM) waves with low insertion loss and perfectly absorb out-of-band energy for radar cross section (RCS) reduction, exhibit great application prospects and urgent needs in fields such as stealth antennas, radomes, and wireless communication systems [1][2][3][4][5][6][7][8][9]. Consequently, numerous FSRs with excellent performance and various requirements have been reported in recent years [10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Multi-characteristic Integrated Ultra-wideband Frequency Selective Rasorber

Wang,

Cui,

Liu

et al. 2024

PIER

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Frequency selective rasorbers (FSRs), especially those with ultra-wideband and hybrid characteristics, are of great significance in modern stealth technology and applications. However, currently available FSRs have issues with limited transmission bandwidth and single operating characteristics. Here, a novel strategy is proposed to design multi-characteristic integrated FSRs with ultra-wide and high-efficiency passband via spoof surface plasmon polariton (SSPP). The designed FSR exhibits the characteristics of absorptiontransmission (AT), transmission-absorption (TA), and absorption-transmission-absorption (ATA), which consists of AT resistive sheets, TA SSPP slow-wave structures, and ultra-wideband bandpass frequency selective surface (FSS). The top lumped-resistor-loaded resistive sheet and the bottom multi-layer cascaded FSS form an AT FSR which is demonstrated by equivalent circuit model (ECM). Middle dispersion gradient SSPP structure that generates SSPP on the periodic array is an independent TA FSR while the working principle is based on k-dispersion control and energy distribution. Thus, the transition band between the transmissive and absorptive bands is narrowed while the crosstalk between absorber and transmission is avoided. For verification, a prototype is fabricated and experimentally demonstrated. Measured results manifest the validity and feasibility of the FSR with an ultra-wide −1 dB transmission band from 8.9 to 16.4 GHz (59.3%) and two 85% absorption bands covering 2.2-6.4 GHz (97.7%) and 17.6-26 GHz (38.5%). Our work provides a novel method for the design of an ultra-wideband multi-characteristic FSR and stimulates its application in broadband electromagnetic stealth, shielding and compatible devices.

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“…The wave propagation direction is a vital wave property and its multiplexing endows the metasurface with rich functions in two asymmetric channels. The requirement of asymmetric wave manipulation widely exists in practical applications such as laser technologies 4 , 5 , antenna radomes 6 , 7 , full-duplex communication 8 , 9 , etc . However, most existing multifunctional metasurfaces do not exploit this design freedom.…”

Section: Introductionmentioning

confidence: 99%

Directional terahertz holography with thermally active Janus metasurface

et al. 2023

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Dynamic manipulation of electromagnetic (EM) waves with multiple degrees of freedom plays an essential role in enhancing information processing. Currently, an enormous challenge is to realize directional terahertz (THz) holography. Recently, it was demonstrated that Janus metasurfaces could produce distinct responses to EM waves from two opposite incident directions, making multiplexed dynamic manipulation of THz waves possible. Herein, we show that thermally activated THz Janus metasurfaces integrating with phase change materials on the meta-atoms can produce asymmetric transmission with the designed phase delays. Such reconfigurable Janus metasurfaces can achieve asymmetric focusing of THz wave and directional THz holography with free-space image projections, and particularly the information can be manipulated via temperature and incident THz wave direction. This work not only offers a common strategy for realizing the reconfigurability of Janus metasurfaces, but also shows possible applications in THz optical information encryption, data storage, and smart windows.

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Intelligent Radome Design With Multilayer Composites to Realize Asymmetric Transmission of Electromagnetic Waves and Energy Isolation

Cited by 13 publications

References 18 publications

Band‐notched frequency‐selective absorber with linear polarization rotation function

Band‐notched frequency‐selective absorber with linear polarization rotation function

Multi-characteristic Integrated Ultra-wideband Frequency Selective Rasorber

Directional terahertz holography with thermally active Janus metasurface

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