Three‐dimensional printed fractal dielectric‐resonator‐based broadband microwave absorber

A broadband microwave absorber based on fractal rectangular dielectric resonator (DR) unit is investigated in this paper. The designed absorber can be fabricated with low‐cost three‐dimensional printing technology, using the high‐loss carbon‐carrying acrylonitrile‐butadiene‐styrene (ABS) polymer. To...

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Bibliographic Details
Published inInternational journal of RF and microwave computer-aided engineering Vol. 32; no. 5
Main Authors He, Hanxiao, Ren, Jian, Sun, Yu‐Xiang, Du, Xiao Yu, Yin, Yingzeng
Format Journal Article
LanguageEnglish
Published Hoboken, USA John Wiley & Sons, Inc 01.05.2022
Hindawi Limited
Subjects
absorber
Absorptivity
Bandwidths
Broadband
dielectric resonator
Fractals
metamaterials
Microwave absorbers
Resonators
ultra‐wideband
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Summary:A broadband microwave absorber based on fractal rectangular dielectric resonator (DR) unit is investigated in this paper. The designed absorber can be fabricated with low‐cost three‐dimensional printing technology, using the high‐loss carbon‐carrying acrylonitrile‐butadiene‐styrene (ABS) polymer. To enhance the operating bandwidth, the fractal‐shaped rectangular DR unit is used and multi modes are excited. For verify, a prototype of the absorber with 8 × 8 unit cells were fabricated and measured. The results indicate that the absorptivity can achieve greater than 90% within a relative bandwidth of 130% from 3.1 to 14.7 GHz, which covers the whole C‐band (4–8 GHz) and X‐band (8–12 GHz). In addition, the absorption properties of the absorber at different incident angles were studied.
Bibliography:Funding information
Fundamental Research Funds for the Central Universities and Innovation Fund of Xidian University; Higher Education Discipline Innovation Project; National Natural Science Foundation of China, Grant/Award Numbers: 61901316, 62071351; Open Project of the State Key Laboratory of Millimeter Waves, Southeast University; Innovation Fund of Xidian University; Fundamental Research Funds for the Central Universities; Southeast University, Grant/Award Number: K202102
ISSN:1096-4290
1099-047X
DOI:10.1002/mmce.23114