点阵结构工艺参数对透波平板电磁波谱的影响
作者:
作者单位:

1.北京卫星信息工程研究所,工艺与机械工程技术研究室,北京 100095;2.北京卫星信息工程研究所,天地一体化信息技术国家重点实验室,北京 100095

作者简介:

迟百宏,1988年出生,博士,工程师,主要从事功能结构复合增材制造技术研究工作。E-mail:baihong1988@163.com

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基金项目:

国家重点研发计划(2018YFB1106705);国家自然科学基金(51803010,62005020)


Influence of Lattice Structure Parameters on Electromagnetic Spectrum Characteristics of Wave Transmission Plate
Author:
Affiliation:

1.Process and Mechanical Engineering Technology Laboratory, Beijing Institute of Satellite Information Engineering,Beijing 10095;2.State Key Laboratory of Space-ground Integrated Information Technology,Beijing Institute of Satellite Information Engineering,Beijing 10095

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    摘要:

    为研究点阵结构工艺参数对透波平板电磁波谱的影响, 基于体心立方结构(BCC)点阵基本构型,建立透波平板仿真模型,运用CST仿真软件分别从孔隙率、蒙皮厚度、胞元尺寸、入射角度4方面探究不同结构工艺参数对透波平板共振频率及透射率的影响。并运用选区激光烧结(SLS)制备点阵透波平板结构,用于2~18 GHz透射率对比测试。结果表明,仿真数据与实验结果高度一致;透波平板共振频率随孔隙率增大,第一频率点向低频偏移,第二频率点向高频偏移;随着蒙皮厚度的增加,透射率降低;胞元尺寸与蒙皮厚度决定透射谱的通带共振频率,孔隙率影响较小;入射角增大时,水平极化入射波透射率均大于75%,影响较小;竖直极化入射波透射率在高频处逐渐降低。

    Abstract:

    In order to research the influence of lattice structure parameters on electromagnetic spectrum characteristics of wave transmission plate, the simulated models are built based on the model of body centered cube(BCC), and the lattice structure parameters such as porosity, skin thickness, cell size and incidence angle are analyzed on the influence of band-pass resonance frequency and transmittance using CST software. Besides, a wave transmission plate structure with lattice structure is fabricated by the technology of selective laser sintering (SLS), and its electromagnetic transmittance is measured at the frequency from 2 GHz to 18 GHz. The results show that the simulation results are in good agreement with the test results. With the increase of porosity, the first frequency point shifts to low frequency, and the second frequency point shifts to high frequency. With the increase of skin thickness, the transmission decreases. The cell size and skin thickness determine the passband resonance frequency of transmission spectrum, and the effect of porosity is small. When the incident angle increases, the horizontal polarization incident wave transmittance is greater than 75%, while the vertical polarization incident wave transmission rate decreases gradually at high frequency.

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迟百宏,贺敬文.点阵结构工艺参数对透波平板电磁波谱的影响[J].宇航材料工艺,2021,51(1):81-86.

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  • 收稿日期:2020-06-12
  • 最后修改日期:2020-12-21
  • 录用日期:2020-06-15
  • 在线发布日期: 2021-02-19