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基于雙磁介質(zhì)層復(fù)合的超材料低頻吸波體研究
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作者單位:

1.北京特種工程設(shè)計(jì)研究院;2.陸軍工程大學(xué)石家莊校區(qū)

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裝備預(yù)研重點(diǎn)實(shí)驗(yàn)室基金(9140C870401140C87366)


Research on Low Frequency Metamaterial absorber based on double magnetic dielectric layer composite
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Affiliation:

1.Beijing Special Engineering Design and Research Institute;2.Army Engineering University Shijiazhuang Campus

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    摘要:

    本文將磁性吸波涂層融入至超材料的結(jié)構(gòu)設(shè)計(jì)中，得到了一種新型低頻復(fù)合超材料吸波體，吸波體由環(huán)形電阻膜、雙層磁性吸波涂層和金屬背板組成。采用CST仿真軟件計(jì)算了超材料吸波體的吸收性能，研究了吸波體各個(gè)結(jié)構(gòu)參數(shù)對(duì)吸收性能的影響。仿真結(jié)果表明，設(shè)計(jì)的超材料吸波體厚度為2.5mm時(shí)，在1.9GHz和4GHz處存在兩個(gè)吸收峰，在1.59-6.59GHz頻率范圍內(nèi)反射損耗低于-8dB，吸收帶寬達(dá)到5GHz。通過(guò)吸波體電磁場(chǎng)分布對(duì)吸波機(jī)理進(jìn)行了討論。結(jié)果表明，吸波體低頻吸收帶寬的增加是由于表面的電阻膜圖案改變了超材料吸波體的電場(chǎng)分布和磁場(chǎng)分布，促進(jìn)了磁介質(zhì)層的損耗。最后制備了吸波體樣品并進(jìn)行了反射率測(cè)試，實(shí)物測(cè)試結(jié)果與仿真結(jié)果基本一致，說(shuō)明設(shè)計(jì)制備的吸波體具有優(yōu)異的低頻吸波性能，吸波帶寬相比磁性吸波涂層大幅提高。

    Abstract:

    In this paper, the magnetic absorbing coating is integrated into the structural design of metamaterials, and a new low-frequency composite metamaterial absorber is obtained. The absorber is composed of annular resistance film, double-layer magnetic absorbing coating and metal back plate. The absorption properties of the metamaterial absorber are calculated by CST simulation software, and the effects of various structural parameters of the absorber on the absorption properties are studied. The simulation results show that when the thickness of the designed metamaterial absorber is 2.5mm, there are two absorption peaks at 1.9GHz and 4GHz, the reflection loss is less than -8dB and the absorption bandwidth is 5GHz in the frequency range of 1.59-6.59GHz. The absorbing mechanism is discussed through the electromagnetic field distribution of the absorber. The results show that the increase of the absorption bandwidth of the absorber is due to the change of the electromagnetic field distribution of the metamaterial absorber and the loss of the magnetic dielectric layer. Finally, the absorber samples are prepared and tested. The physical test results are basically consistent with the simulation results, which shows that the designed and prepared absorber has excellent low-frequency absorbing performance, and the absorbing bandwidth is greatly improved compared with the magnetic absorbing coating.

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引用本文

李澤,孫海濤,程兆剛,閆晶.基于雙磁介質(zhì)層復(fù)合的超材料低頻吸波體研究[J].稀有金屬材料與工程,2023,52(1):398~402.[Li Ze, Sun Haitao, Cheng Zhaogang, Yan Jing. Research on Low Frequency Metamaterial absorber based on double magnetic dielectric layer composite[J]. Rare Metal Materials and Engineering,2023,52(1):398~402.]
DOI：10.12442/j. issn.1002-185X.20210942

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  • 收稿日期:2021-10-30
  • 最后修改日期:2022-04-15
  • 錄用日期:2022-04-19
  • 在線發(fā)布日期: 2023-02-13
  • 出版日期: 2023-02-08