Multi Band Metamaterials Absorber for Stealth Applications
| Autor | Khalid Saeed Lateef Al-badri |
| Cargo | Master of Electronics and Communication Engineering at Su?leyman Demirel University, Turkey. Member of the Iraqi Engineers Union. Instructor and researcher at the College of Engineering (Electromechanics Department) and College of Education (Physics Department) at University of Samarra, Iraq. Director of Computer and Information Center at ... |
| Páginas | 133-144 |
Multi Band Metamaterials Absorber for Stealth Applications (p. 133-144) 133
AL-BADRI, K. S. L.
Multi Band Metamateria ls Absorber for Stealth Applications
.
Law, State and
Telecommunications Review, Brasilia, v. 11, no. 1, p. 133-144, May 2019
.
DOI: https://doi.org/10.26512/lstr.v11i1.22928
Multi Band Metamaterials Absorber for Stealth Applications
Submitted
: 14/02/2019
Khalid Saeed Lateef Al-badri*
Revised
: 03/04/201 9
Accepted
: 07/04/2019
Abstract
Purpose –
This paper presents a simulation study using CST microwave studio compu ter
software.
Methodology/appr oach/design –
A simple s tructure based on metam aterial are used to
construct a perf ect metam aterial abso rber. It is made of just one unco mpleted square
patch copper p laced on top of dielect ric layer to separate it from a copper ground plate.
Findings –
This design provides four perfect absorption regions with absorption peaks
of an average of 93%. The characterist ic study of parameters such a s copper dimensions
and dielectric properties led to an expe cted result in the synthesi s of resonant frequency .
Practical implications –
Th e multi-band absorption can be used in e nergy harvesting
applications, protection from the eff ects of electromagnetic waves, radar stealth
technology and the rmal imaging . Moreover, the experimental results show good
agreement wit h CST simulation.
Keywords: metamaterial, perfect absorb er, radar stealth, microwav e.
Introduction
Metamaterials are materials with ideal characteristics in the sp ectrum of
electromagnetic waves and in the size of micro cell compared with the
wavelength. They have attracted significant attention due to their exotic
properties that are unavailable in nature such as invisibility cloacking (Schurig
et al., 2006), radar stealth (Ji et al., 2019), sensor (Al-Badri et al., 2017) ,
negative index of refraction (Smith et al. 2004), split-ring resonator (Pendry et
al. 1999; Wang et al. 2013; Al-Badri, 2018), fishing net structure (Faruk et al.,
2019), conductive ri ngs separate from each other (Dolling et al., 2005).
Stunning structures have been proposed to achieve the amazing properties of
electromagnetic metamaterials (Yu et al., 2018). Most proposed metamaterials
have inevitable energy losses which reflect negatively on their performance. On
the other hand, these losses play a fundamental role in photonics applications.
*
Master of E lectronics and Commu nication Engineering at Süleyma n Demirel
University, Turkey. Membe r of the Iraqi Engineers Union. Ins tructor and re searcher at
the College of Engineering (Electromech anics Depart ment) and College of Educa tion
(Physics Department) at Univer sity of Samarra, Iraq. Director of Compu ter and
Information Center at University of Samarra. Memb er of the Committee for the
Development of Computer and In formatics C urricula in the Iraqi Ministry of Higher
Education. E-mail:
khalidsaeed@uosamarra.edu.iq.
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