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Microwave Metamaterials: Superlensing and Design of Low Reflection Coatings

Culhaoglu, Ali Eren (2012) Microwave Metamaterials: Superlensing and Design of Low Reflection Coatings. Dissertation, Technische Universität München.

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Metamaterials are artificially engineered materials that have properties not attainable with naturally occurring materials, such as a negative refractive index. They enable the design of novel microwave devices, which cannot be realized on the basis of naturally occurring materials. The imaging properties of a metamaterial superlens and the design of metamaterial low reflection coatings are investigated in this work. A planar negative refractive index metamaterial slab focuses waves emitted from a Hertzian dipole to an image plane behind the slab. A resolution beyond that of conventional imaging systems is thereby achieved. The imaging characteristics of the superlens are investigated analytically in the spectral domain by expressing the fields as a Fourier integral. A novel approach for the realization of Drude and Lorentz dispersive metamaterial radar absorbers is presented. A metamaterial based anti-reflection coating is realized and studied experimentally.

Item URL in elib:https://elib.dlr.de/83502/
Document Type:Thesis (Dissertation)
Title:Microwave Metamaterials: Superlensing and Design of Low Reflection Coatings
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:September 2012
Refereed publication:Yes
Open Access:No
Number of Pages:124
Keywords:Metamaterial, superlens, imaging properties, resolution, radar absorber, anti-reflection coating, radar cross section reduction
Institution:Technische Universität München
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Security-relevant Earth Observation
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Reconnaissance and Security
Deposited By: Fischer, Jens
Deposited On:19 Jul 2013 15:36
Last Modified:10 Mar 2014 16:09

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