中国物理B ›› 2015, Vol. 24 ›› Issue (10): 104104-104104.doi: 10.1088/1674-1056/24/10/104104

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

Tunable wideband absorber based on resistively loaded lossy high-impedance surface

党可征, 时家明, 汪家春, 林志丹, 王启超   

  1. State Key Laboratory of Pulsed Power Laser, Electric Engineering Institute, Hefei 230037, China
  • 收稿日期:2015-01-09 修回日期:2015-03-26 出版日期:2015-10-05 发布日期:2015-10-05

Tunable wideband absorber based on resistively loaded lossy high-impedance surface

Dang Ke-Zheng (党可征), Shi Jia-Ming (时家明), Wang Jia-Chun (汪家春), Lin Zhi-Dan (林志丹), Wang Qi-Chao (王启超)   

  1. State Key Laboratory of Pulsed Power Laser, Electric Engineering Institute, Hefei 230037, China
  • Received:2015-01-09 Revised:2015-03-26 Online:2015-10-05 Published:2015-10-05
  • Contact: Shi Jia-Ming E-mail:shijmeei@yahoo.com

摘要: A lossy high-impedance surface comprised of two layers of resistive frequency selective surfaces is employed to design a tunable electromagnetic absorber. The tunability is realized through changing the composite unit cell by moving the top layer mechanically. To explain the absorbing mechanism, an equivalent circuit model with an interacting coefficient is proposed. Then, simulations and measurements are carried out and agree well with each other. Results show that the complex structure with a thickness less than λ0/4 is able to achieve a wideband absorption in a frequency range from 5.90 GHz to 19.73 GHz. Moreover, it is tunable in the operation frequency band.

关键词: frequency selective surface, high-impedance surface, microwave absorber, tunable

Abstract: A lossy high-impedance surface comprised of two layers of resistive frequency selective surfaces is employed to design a tunable electromagnetic absorber. The tunability is realized through changing the composite unit cell by moving the top layer mechanically. To explain the absorbing mechanism, an equivalent circuit model with an interacting coefficient is proposed. Then, simulations and measurements are carried out and agree well with each other. Results show that the complex structure with a thickness less than λ0/4 is able to achieve a wideband absorption in a frequency range from 5.90 GHz to 19.73 GHz. Moreover, it is tunable in the operation frequency band.

Key words: frequency selective surface, high-impedance surface, microwave absorber, tunable

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

  • 41.20.Jb
73.40.Rw (Metal-insulator-metal structures) 75.70.Cn (Magnetic properties of interfaces (multilayers, superlattices, heterostructures))