Abstract：
:Microwave absorbers have important applications in various areas including stealth, camouflage, and antenna. Here, we have designed an ultra-broadband light absorber by integrating two different-sized tapered hyperbolic metamaterial (HMM) waveguides, each of which has wide but different absorption bands due to broadband slow-light response, into a unit cell. Both the numerical and experimental results demonstrate that in such a design strategy, the low absorption bands between high absorption bands with a single-sized tapered HMM waveguide array can be effectively eliminated, resulting in a largely expanded absorption bandwidth ranging from 2.3 to 40 GHz. The presented ultra-broadband light absorber is also insensitive to polarization and robust against incident angle. Our results offer a further step in developing practical artificial electromagnetic absorbers, which will impact a broad range of applications at microwave frequencies.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Yin X,Long C,Li J,Zhu H,Chen L,Guan J,Li Xdoi
10.1038/srep15367subject
Has Abstractpub_date
2015-10-19 00:00:00pages
15367issn
2045-2322pii
srep15367journal_volume
5pub_type
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