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
党可征, 时家明, 汪家春, 林志丹, 王启超
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)
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.
中图分类号: (Electromagnetic wave propagation; radiowave propagation)