Metamaterial absorbers realized in an X-band rectangular waveguide |
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| Authors: | Huang Yong-Jun a Wen Guang-Jun a Li Jian a Zhong Jing-Ping a Wang Ping a Sun Yuan-Hua a O.Gordon a and Zhu Wei-Ren |
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| Affiliation: | b) a) Key Laboratory of Broadband Optical Fiber Transmission & Communication Networks,School of Communication and Information Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China b) Advanced Computing and Simulation Laboratory(AχL),Department of Electrical and Computer Systems Engineering,Monash University,Clayton,Victoria 3800,Australia |
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| Abstract: | In this paper,we demonstrate six types of metamaterial absorbers(MMAs) by measuring their absorptivities in an X-band(8-12 GHz) rectangular waveguide.Some of the MMAs have been demonstrated previously by using the free space measurement method,and the others are proposed firstly in this paper.The measured results show that all of the six MMAs exhibit high absorptivities above 98%,which have similar absorbing characteristics to those measured in the free space.The numerically obtained surface current densities for each MMA show that the absorbing mechanism is the same as that under the free space conditions.Such a demonstration method is superior to the conventional free space measurement method due to the small-scale test samples required,the simple measure device,and its low cost.Most importantly,the proposed method opens a way to enable MMAs to be used in microwave applications such as matched terminations. |
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| Keywords: | metamaterial absorber electric resonator rectangular waveguide |
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