A Novel Tunable Dual-band Microwave Metamaterial Absorber Based on Split Ring Resonant
We present the design, simulation, fabrication, and measurement of a tunable metamaterial at microwave frequencies by embedding varactor diodes as an active elements inside metamaterial units. A pair of feed lines are used to control the reverse bias voltage on the diode. The proposed absorber can perform absorption peaks at two resonant frequencies. The lower resonant frequency can be tuned in a wide range by tuning the values of the diodes while the higher resonant frequency keeps unchangeable. In addition, the absorber with the thickness of λ/74 at the lowest fundamental resonant frequency is ultra-thin. We also find that the absorber is insensitive to the polarization of incident waves for a wide range of incidence angles for both TE and TM polarizations. The experimental results show excellent absorption rates under different bias voltage on the diode, which are in good accordance to the simulated results.
Jialin Yuan Shaobin Liu Borui Bian Xiangkun Kong Haifeng Zhang Ben Ma Zhiwen Mao Beiyin Wang
Key Laboratory of Radar Imaging and Microwave Photonics Ministry of Education, College of Electronic Key Laboratory of Radar Imaging and Microwave Photonics Ministry of Education, College of Electronic
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
296-299
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）