Design of a varactor-tunable metamaterial absorber

doi:10.1088/1674-1056/23/6/067801

中国物理B ›› 2014, Vol. 23 ›› Issue (6): 67801-067801.doi: 10.1088/1674-1056/23/6/067801

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Design of a varactor-tunable metamaterial absorber

林宝勤, 达新宇, 赵尚弘, 蒙文, 李凡, 方英武, 王甲富

Institute of Information and Navigation, Air Force Engineering University, Xi'an 710077, China

收稿日期:2013-10-06 修回日期:2013-12-21 出版日期:2014-06-15 发布日期:2014-06-15
基金资助:
Project supported by the National Natural Science Foundations of China (Grant Nos. 61271250 and 11204378).

Design of a varactor-tunable metamaterial absorber

Lin Bao-Qin (林宝勤), Da Xin-Yu (达新宇), Zhao Shang-Hong (赵尚弘), Meng Wen (蒙文), Li Fan (李凡), Fang Ying-Wu (方英武), Wang Jia-Fu (王甲富)

Institute of Information and Navigation, Air Force Engineering University, Xi'an 710077, China

Received:2013-10-06 Revised:2013-12-21 Online:2014-06-15 Published:2014-06-15
Contact: Lin Bao-Qin E-mail:aflbq@sina.com
Supported by:
Project supported by the National Natural Science Foundations of China (Grant Nos. 61271250 and 11204378).

摘要/Abstract

摘要： In this paper, we design a varactor-tunable metamaterial absorber (MA). The tunable MA is based on a mushroom-type high impedance surface (HIS), in which varactors are loaded between adjacent metal patches to adjust the capacitance and tune the resonance frequency, the primary ground plane is etched as the bias network to bias all of the varactors in parallel, and another ultra-thin grounded film is attached to the bottom. Its absorption characteristics are realized for electrically dielectric loss. The simulated values of a sample indicate that a tunable frequency range from 2.85 GHz to 2.22 GHz is achieved by adjusting the varactor capacitance from 0.1 pF to 2.0 pF, and better than 0.97 absorbance is realized; in addition, the tunable frequency range is expanded from 4.12 GHz to 1.70 GHz after optimization.

关键词: metamaterial absorber (MA), high impedance surfaces (HISs), varactor

Abstract: In this paper, we design a varactor-tunable metamaterial absorber (MA). The tunable MA is based on a mushroom-type high impedance surface (HIS), in which varactors are loaded between adjacent metal patches to adjust the capacitance and tune the resonance frequency, the primary ground plane is etched as the bias network to bias all of the varactors in parallel, and another ultra-thin grounded film is attached to the bottom. Its absorption characteristics are realized for electrically dielectric loss. The simulated values of a sample indicate that a tunable frequency range from 2.85 GHz to 2.22 GHz is achieved by adjusting the varactor capacitance from 0.1 pF to 2.0 pF, and better than 0.97 absorbance is realized; in addition, the tunable frequency range is expanded from 4.12 GHz to 1.70 GHz after optimization.

Key words: metamaterial absorber (MA), high impedance surfaces (HISs), varactor

中图分类号: (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))

78.20.Ci

42.25.Bs (Wave propagation, transmission and absorption)

林宝勤, 达新宇, 赵尚弘, 蒙文, 李凡, 方英武, 王甲富. Design of a varactor-tunable metamaterial absorber[J]. 中国物理B, 2014, 23(6): 67801-067801.

Lin Bao-Qin (林宝勤), Da Xin-Yu (达新宇), Zhao Shang-Hong (赵尚弘), Meng Wen (蒙文), Li Fan (李凡), Fang Ying-Wu (方英武), Wang Jia-Fu (王甲富). Design of a varactor-tunable metamaterial absorber[J]. Chin. Phys. B, 2014, 23(6): 67801-067801.

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Design of a varactor-tunable metamaterial absorber

Design of a varactor-tunable metamaterial absorber

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