Inkjet-printed frequency-selective surfaces based on carbon nanotubes for ultra-wideband thin microwave absorbers

被引：20

作者：

Jaiswar, R. ^{[1
]}

Mederos-Henry, F. ^{[2
]}

Dupont, V ^{[3
]}

Hermans, S. ^{[2
]}

Raskin, J-P ^{[1
]}

Huynen, I ^{[1
]}

机构：

[1] UCLouvain, ICTEAM Inst, ELEN Div, 3 Pl Levant, B-1348 Louvain La Neuve, Belgium

[2] UCLouvain, MOST Div, IMCN Inst, 1 Pl Lavoisier, B-1348 Louvain La Neuve, Belgium

[3] Belgian Ceram Res Ctr, 4 Ave Gouverneur, B-7000 Mons, Belgium

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2020年 / 31卷 / 03期

关键词：

OBLIQUE ANGLE; GRAPHENE; DESIGN; NANOPARTICLES; COMPOSITE; FABRICATION; BANDWIDTH; PATTERNS; JAUMANN; OXIDE;

D O I：

10.1007/s10854-019-02751-6

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A microwave absorber combining frequency-selective surfaces (FSSs) and dielectric layers is presented. FSSs are printed on dielectric layers using a resistive ink made of a suspension of carbon nanotubes. The absorber exhibits a fractional bandwidth of 137%, corresponding to reflectivity lower than -15 dB and absorption higher than 90% from 7.30 till 41.95 GHz, meaning a 34 GHz bandwidth, for a thickness of only 0.13 lambda. This performance is obtained by tuning the number of printed layers, which fixes FSS resistivities, hence the absorption bandwidth. An electrical equivalent circuit is proposed to explain the absorption mechanism. Excellent agreement is observed between the designed and measured low reflectivity and high absorption. The absorber stands out in term of bandwidth and compacity as compared to the state of the art.

引用

页码：2190 / 2201

页数：12

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