中国物理B ›› 2018, Vol. 27 ›› Issue (4): 44101-044101.doi: 10.1088/1674-1056/27/4/044101

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Design of scale model of plate-shaped absorber in a wide frequency range

Li-Ming Yuan(袁黎明), Yong-Gang Xu(许勇刚), Wei Gao(高伟), Fei Dai(戴飞), Qi-Lin Wu(吴琪琳)   

  1. 1. Science and Technology on Electromagnetic Scattering Laboratory, Shanghai 200438, China;
    2. Key Laboratory of High Performance Fibers & Products, Ministry of Education, Donghua University, Shanghai 201620, China
  • 收稿日期:2017-10-18 修回日期:2017-12-07 出版日期:2018-04-05 发布日期:2018-04-05
  • 通讯作者: Li-Ming Yuan E-mail:lming_y@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61601299 and 11404213), the Shanghai Municipal Science and Technology Commission, China (Grant Nos. 17210730900 and 15ZR1439600), and the Defense Industrial Technology, China (Grant No. B2120132001).

Design of scale model of plate-shaped absorber in a wide frequency range

Li-Ming Yuan(袁黎明)1, Yong-Gang Xu(许勇刚)1, Wei Gao(高伟)1, Fei Dai(戴飞)1, Qi-Lin Wu(吴琪琳)2   

  1. 1. Science and Technology on Electromagnetic Scattering Laboratory, Shanghai 200438, China;
    2. Key Laboratory of High Performance Fibers & Products, Ministry of Education, Donghua University, Shanghai 201620, China
  • Received:2017-10-18 Revised:2017-12-07 Online:2018-04-05 Published:2018-04-05
  • Contact: Li-Ming Yuan E-mail:lming_y@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61601299 and 11404213), the Shanghai Municipal Science and Technology Commission, China (Grant Nos. 17210730900 and 15ZR1439600), and the Defense Industrial Technology, China (Grant No. B2120132001).

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摘要： In order to design the scale model in a wide frequency range, a method based on the reflective loss is proposed according to the high-frequency approximation algorithm, and an example of designing the scale model of a plate-shaped absorber is given in this paper. In the example, the frequency of the full-size measurement ranges from 2.0 GHz to 2.4 GHz, the thickness of the full-size absorber is 1 mm and the scale ratio is 1/5. A two-layer scale absorber is obtained by the proposed method. The thickness values of the bottom and top layer are 0.4 mm and 0.5 mm, respectively. Furthermore, the scattering properties of a plate model and an SLICY model are studied by FEKO to verify the effectiveness of the designed scale absorber. Compared with the corresponding values from the theoretical scale model, the average values of the absolute deviations in 10 GHz~12 GHz are 0.53 dBm2, 0.65 dBm2, 0.76 dBm2 for the plate model and 0.20 dBm2, 0.95 dBm2, 0.77 dBm2 for the SLICY model while the incident angles are 0°, 30°, and 60°, respectively. These deviations fall within the Radar cross section (RCS) measurement tolerance. Thus, the work in this paper has important theoretical and practical significance.

关键词: scale model, plate-shaped absorber, wide frequency range, RCS

Abstract: In order to design the scale model in a wide frequency range, a method based on the reflective loss is proposed according to the high-frequency approximation algorithm, and an example of designing the scale model of a plate-shaped absorber is given in this paper. In the example, the frequency of the full-size measurement ranges from 2.0 GHz to 2.4 GHz, the thickness of the full-size absorber is 1 mm and the scale ratio is 1/5. A two-layer scale absorber is obtained by the proposed method. The thickness values of the bottom and top layer are 0.4 mm and 0.5 mm, respectively. Furthermore, the scattering properties of a plate model and an SLICY model are studied by FEKO to verify the effectiveness of the designed scale absorber. Compared with the corresponding values from the theoretical scale model, the average values of the absolute deviations in 10 GHz~12 GHz are 0.53 dBm2, 0.65 dBm2, 0.76 dBm2 for the plate model and 0.20 dBm2, 0.95 dBm2, 0.77 dBm2 for the SLICY model while the incident angles are 0°, 30°, and 60°, respectively. These deviations fall within the Radar cross section (RCS) measurement tolerance. Thus, the work in this paper has important theoretical and practical significance.

Key words: scale model, plate-shaped absorber, wide frequency range, RCS

中图分类号:  (Electromagnetic wave propagation; radiowave propagation)

  • 41.20.Jb
81.70.Ex (Nondestructive testing: electromagnetic testing, eddy-current testing) 81.05.Qk (Reinforced polymers and polymer-based composites)