期刊
ACS PHOTONICS
卷 1, 期 3, 页码 279-284出版社
AMER CHEMICAL SOC
DOI: 10.1021/ph400172u
关键词
transparent; flexible; broadband; microwave; absorber
类别
资金
- AFOSR
- NSF
We present an optically transparent, flexible, and polarization-independent broadband microwave absorber. It is designed to possess two spectrally overlapped resonances of a bow-tie array, which originates from the fundamental resonance mode and the coupling between the neighboring units. An Al wire gird is used to construct the bow-tie array to induce high ohmic loss and broaden the bandwidth of the resonances. As a result, the combined resonances lead to more than 90% total absorption covering a wide frequency range from 5.8 to 12.2 GHz. The transparent and flexible properties provide more flexibility for absorber applications. The optical transmittance of the whole structure is more than 62%.
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