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performance and electromagnetic mechanism of radar-and infraredcompatible stealth materials based on photonic crystals

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International Journal of Minerals,Metallurgy and Materials 2025年第3期32卷 710-717页

作者： Yanming Liu Xuan Yang Lixin Xuan Weiwei Men Xiao Wu Yuping Duan AVIC Research Institute for Special Structures of Aeronautical Composite Ji’nan 250023China Aviation Key Lab of Science and Technology on High Performance Electromagnetic Windows Ji’nan 250023China Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian 116085China

Traditional stealth materials do not fulfill the requirements of high absorption for radar waves and low emissivity for infrared ***,they can be detected by various technologies,considerably threatening weapon ***,a stealth material compatible with radar and infrared was designed based on the photonic bandgap characteristics of photonic *** radar stealth lay-er(bottom layer)is a composite of carbonyl iron/silicon dioxide/epoxy resin,and the infrared stealth layer(top layer)is a 1D photonic crystal with alternately and periodically stacked germanium and silicon *** composition optimization and structural adjust-ment,the effective absorption bandwidth of the compatible stealth material with a reflection loss of less than-10 dB has reached 4.95 *** average infrared emissivity of the proposed design is 0.1063,indicating good stealth *** theoretical analysis proves that photonic crystals with this structural design can produce infrared waves within the photonic bandgap,achieving high radar wave transmittance and low infrared *** stealth is achieved without affecting the absorption performance of the radar stealth layer,and the conflict between radar and infrared stealth performance is *** work aims to promote the application of photonic crystals in compatible stealth materials and the development of stealth technology and to provide a design and theoretical found-ation for related experiments and research.

关键词： microwave absorption infrared stealth photonic crystal compatible stealth

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Radiation-Stealth Integrated Antenna Structure Based on FSR

Radiation-Stealth Integrated Antenna Structure Based on FSR

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2024 International Applied Computational electromagnetics Society Symposium, ACES-China 2024

作者： Li, Kai Liu, Peng Zhou, Guangyong Pang, Xiaoyu Aviation Key Lab of Science and Technology on High Performance Electromagnetic Windows AVIC Research Institute for Special Structures of Aeronautical Composites Tsinan China

ISBN: (纸本)9798350355581

This article proposes a radiation-stealth integrated antenna structure based on an FSR (Frequency Selective Rasorber) structure. When the antenna is operational, this structure functions as a normal radiator;however, when it is inactive, the entire system becomes a broadband absorber. Simulation results indicate that the structure exhibits a VSWR © 2024 IEEE.

关键词： Microwave antennas

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Low Profile electromagnetic Functional Metasurfaces with Passband Switchable Function

Low Profile Electromagnetic Functional Metasurfaces with Pas...

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2024 International Applied Computational electromagnetics Society Symposium, ACES-China 2024

作者： Shi, Min Li, Mengyuan Zhang, Qingdong Pang, Xiaoyu Aviation Key Lab of Science and Technology on High Performance Electromagnetic Windows AVIC Research Institute for Special Structures of Aeronautical Composites Tsinan China

ISBN: (纸本)9798350355581

This paper proposes a multifunctional switching electromagnetic functional metasurfaces based on PIN diodes, which has the advantages of low profile and angular stability, and is suitable for fast switching in different passbands. By cascading a two-layer non resonant structure, it has a dual transmission passband (6.5-7.0 GHz and 11.9-12.8 GHz) in the "off state"and a single transmission passband (9.5-10.5 GHz) in the "open state". After simulation, both functions ensure a 70% transmittance (within a 45 ° incidence angle range) at a profile height of 1mm, and have a high cutoff state outside the passband. © 2024 IEEE.

关键词： PIN diodes

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Design of A Novel Frequency Selective Surface based on Three-Dimensional Structure

Design of A Novel Frequency Selective Surface based on Three...

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2024 International Applied Computational electromagnetics Society Symposium, ACES-China 2024

作者： Li, Mengyuan Wang, Bao Wang, Qian Pang, Xiaoyu Aviation Key Lab of Science and Technology on High Performance Electromagnetic Windows AVIC Research Institute for Special Structures of Aeronautical Composites Tsinan China

ISBN: (纸本)9798350355581

This paper proposes a novel frequency selective surface based on three-dimensional structure, which consists of the planar periodic hexagonal ring gap structure and three-dimensional structure with gas printed on it. The proposed structure can achieve switchable transparent/reflective states, and the transparent state can provide high transmittance and cutoff state outside the passband, it is advantageous for application in complex electromagnetic environment © 2024 IEEE.

关键词： Frequency selective surfaces

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A Dual-band Patch Antenna Fed with Coplanar L-Probe 12

A Dual-band Patch Antenna Fed with Coplanar L-Probe

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12th IEEE Asia-Pacific Conference on Antennas and Propagation, APCAP 2024

作者： Liu, Peng Zhao, Yinxue Li, Kai Gao, Di Pang, Xiaoyu Men, Weiwei Avic Research Institute for Special Structures of Aeronautical Composites Aviation Key Lab of Science and Technology on High Performance Electromagnetic Windows Tsinan China

ISBN: (纸本)9798350351019

This paper designs a dual-band microstrip patch antenna fed by a coplanar L-probe. This antenna contains a rectangle patch, two parasitic patches, and a coplanar gradient L-probe. The L probe coupled the rectangle patch, achieving impedance matching in the lower band. The parasitic patch can produce impedance matching in the upper band. The antenna shows the -10 dB impedance bandwidths in 5.31 ∼ 6.33GHz and 6.98 ∼ 7.56GHz through coplanar coupling design of three structures. And the antenna has good radiation patterns in the dual-band. © 2024 IEEE.

关键词： Slot antennas

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A novel Wideband Frequency-Selective Polarization Converter for Reducing Backward-Scattering

A novel Wideband Frequency-Selective Polarization Converter ...

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2024 IEEE International Conference on Computational electromagnetics, ICCEM 2024

作者： Zhang, Xuewei Zhao, Shenghui Pang, Xiaoyu Avic Research Institute For Special Structures of Aeronautical Composite Aviation Key Lab of Science and Technology On High Performance Electromagnetic Windows Jinan250023 China

ISBN: (纸本)9798350383317

In this paper, we combine the frequency selective surface (FSS) with the polarization conversion surface to realize the frequency selective polarization converter (FSPC), which can be used to reduce the backward radar cross section. The proposed FSPC consists of a curved double-arrow reflection polarization conversion layer in the upper layer and a chamfer FSS layer in the lower layer. The results show that the transparent frequency band of 3-dB ranges from 8.9 to 14 GHz, and the relative bandwidth of the co-polarizing reflection coefficient less than-10dB is 135%. The reflection polarization conversion rate of the designed FSPC is over 90% in the frequency bands of 4-7.9 GHz and 16.3-20 GHz on both sides of the passband. Furthermore, the designed FSPC is arranged on a chessboard pattern to reduce backscattering energy in the broadband range from 3.5 to 23 GHz. Compared with traditional polarization converters, the designed FSPC exhibits an extra frequency selection performance of a broadband transmission window. These results will have potential applications in radomes to achieve wideband low backward RCS. © 2024 IEEE.

关键词： Frequency selective surfaces

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A novel Graphene Frequency Selective Surface with Switching Characteristic 12

A novel Graphene Frequency Selective Surface with Switching ...

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12th IEEE Asia-Pacific Conference on Antennas and Propagation, APCAP 2024

作者： Zhang, Xuewei Liu, Xinkun Wang, Bao Pang, Xiaoyu Avic Research Institute for Special Structures of Aeronautical Composite Aviation Key Lab of Science and Technology on High Performance Electromagnetic Windows Jinan250023 China

ISBN: (纸本)9798350351019

In this paper, a novel graphene frequency selective surface (GFSS) composite structure is proposed, which is based on the electromagnetic tunability of graphene and the passive metal structure with special electromagnetic response. The proposed GFSS is composed of an aperture coupling resonator and a graphene structure, and the electrical coupling between the cross resonators on both sides of the aperture is dominant. The electromagnetic field distribution at the end of the upper and lower layer resonator is controlled by adjusting the chemical potential of graphene to realize the on or off state of the FSS passband. The simulated results indicate that the transmission and cutoff at the resonance frequency can be changed by adjusting the squared resistance of graphene. This study has certain value in expanding the FSS design and the application of graphene. © 2024 IEEE.

关键词： Cutoff frequency

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Analysis and Design of Dual-Polarized Time-Share On-Off Bandpass FSS 10

Analysis and Design of Dual-Polarized Time-Share On-Off Band...

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10th IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, MAPE 2024

作者： Qian, Wang Liang, Fang Shandong Weihai264209 China A VIC Research Institute for Special Structures of Aeronautical Composite Aviation Key Laboratory of Science and Technology on High Performance Electromagnetic Windows Shandong Jinan250023 China

ISBN: (纸本)9798331533922

Coping with the technical demand of radar stealth, a dual-polarized time-share on-off FSS is simulated in this article. Through the adaption of three layers of CLC compound structures and time-sharing control under the operation of switching diodes with dual and independent control, the proposed structure realized the autonomous regulation between transmission and rejection under TE and TM polarization. The optimum and performance of proposed structures are simulated by the full-wave EM simulation software. Simulation results indicate that this structure realized autonomous regulation between four states, i.e., dual-polarized transmission, single-polarized transmission Isingle-polarized rejection, and dual-polarized rejection. The insertion loss of passband less than IdB ranges from 8.5 to 11.5 GHz, and the stopband of transmission coefficient less than 10dB ranges from 7 to 10 GHz. Moreover, results support the fact that proposed structures realized the autonomous regulation between effective transmission and efficient rejection in desired polarizations. Results denote that the proposed dual-polarized time-share on-off FSS in this article is feasible. © 2024 IEEE.

关键词： Time sharing programs

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The Joint Radar Cross Section Imaging and Inversion Method Based on Modified Backprojection Algorithm

The Joint Radar Cross Section Imaging and Inversion Method B...

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2024 International Conference on Intelligent Communication, Sensing and electromagnetics, ICSE 2024

作者： Liang, Da Pang, Xiaoyu Dong, Shukun Gao, Maocheng AVIC Research Institute for Special Structures of Aeronautical Composite Aviation Key Lab. of Science and Technology on High Performance Electromagnetic Windows Shandong Ji'nan China

ISBN: (纸本)9798350354935

high stealth property is the core performance of modern weapons and equipment. In general, radar cross section (RCS) is used to represent the steal performance. The RCS imaging and inversion play an important role in evaluating the steal performance of modern weapons and equipment. In this paper, the principle of two-dimensional RCS imaging is introduced firstly. Then, the RCS imaging and inversion method based on modified backprojection algorithm is proposed. The joint RCS imaging and inversion method are both verified by simulation experiments. The results show that the proposed method has high accuracy. © 2024 IEEE.

关键词： Radar cross section

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Design of An Integrated Frequency Selective Surface Structure for Wave Transmission and Stealth 15

Design of An Integrated Frequency Selective Surface Structur...

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15th International Conference on Microwave and Millimeter Wave technology, ICMMT 2023

作者： Zhou, Wenjun Fang, Xinrui Liu, Meng Zhang, Dongliang Men, Weiwei Avic Research Institute for Special Structures of Aeronautical Composites Aviation Key Laboratory of Science and Technology on High Performance Electromagnetic Windows Shandong Jinan250023 China

ISBN: (纸本)9798350338874

Frequency selective surface (FSS) is widely used in radar stealth radomes because of its excellent integrated function of wave transmission and stealth. In this paper, the characteristics of high-frequency broadband transmission and low-frequency broadband absorption are realized through the cascade structure design of lossy layer frequency selective surface and lossless layer bandpass frequency selective surface loaded with lumped resistance devices. The lossy layer frequency selection surface is a six-sided ring branch loaded lumped resistor device structure, and the lossless layer bandpass frequency selection surface is a six-sided slot structure. Full-wave simulation shows that the reflection coefficient of the structure is less than - 10dB in the frequency range of 3.9GHz-15.5GHz, and it can cover C-band, X-band and some Ku-band. The insertion loss of the structure is less than 1 dB, and the frequency band range is 24.77GHz-30.9GHz. At the same time, the structure has good polarization stability. The structure can be widely used in satellite communication radar radomes equipped with carrier platforms. © 2023 IEEE.

关键词： Frequency selective surfaces

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