NDLI: On the design of perfect metamaterial absorbers

Content Provider	IEEE Xplore Digital Library
Author	Costa, F. Genovesi, S. Monorchio, A. Manara, G.
Copyright Year	2012
Description	Author affiliation: Dipartimento di Ingegneria dell'Informazione, Università di Pisa, Italy (Costa, F.; Genovesi, S.; Monorchio, A.; Manara, G.)
Abstract	Perfect absorbing metamaterials comprising a metallic frequency selective surface printed on a thin low loss grounded substrate are analyzed. An efficient transmission line approach is employed to derive simple formulas which describe in detail the absorption mechanism of the subwavelength structure. In particular, the real part of the input impedance as a function of the imaginary part of the substrate dielectric permittivity is analytically derived in order to show why the presence of moderate losses in the substrate is sufficient to achieve matching with free space, that is, perfect absorption. The shape of the unit cell allows tailoring the absorption bandwidth in correspondence of the chosen resonant frequency. Once fixed the substrate thickness, the choice of low capacitive elements allows obtaining perfect absorption in a small frequency region with very low substrate losses while the choice of highly coupled elements allows obtaining the largest possible bandwidth with higher substrate losses.
Starting Page	1
Ending Page	2
File Size	254478
Page Count	2
File Format	PDF
ISBN	9781467304610
ISSN	15223965
e-ISBN	9781467304627
DOI	10.1109/APS.2012.6349298
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-08
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Absorption Substrates Frequency selective surfaces Metamaterials Impedance Dielectrics
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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