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Development and Analysis of Left-Handed Materials

Objective

Left-handed (LH) materials are composite materials with novel and unique electromagnetic properties, which are not determined by the fundamental physical properties of their constituents but by the shape and the distribution of specific patterns included in them. LH materials have the unique property of having both the effective permittivity and the effective permeability negative. The aim of this proposal is the theoretical understanding, analysis, development and testing of LH materials, and also the investigation of their feasibility for commercial telecommunication applications. These applications include RF absorbers, radomes, wide-angle impedance matching sheets for phased array antennas, generation of nearly divergence-free RF beams, RF lenses, variable negative filters and remote imaging.

DESCRIPTION OF WORK
The work plan is divided into three technical work packages (WP), in addition to a fourth work package (WP4) devoted to the management and the dissemination of the project results. WP1 is devoted to theoretical understanding and to development of modeling tools and characterization techniques for parameter determination. The validity of the modelling tools will be tested through comparison of the theoretical data with experimental ones obtained in the other workpackages. Detailed simulations and modelng of LH structures, both periodic and random, will provide a CAD toolbox for LH-based building blocks and demonstrators. WP2 addresses the development and procedures for the fabrication of candidate LH structures. The fabrication of the active patterns will be done using thin film techniques. The inactive matrix in which these patterns reside will be made of various suitable materials, such as quartz, glass, or "Rexolite", a thermo set cross-linked polystyrene material with low loss. Based on the results of WP1 and WP2, WP3 is devoted to the design, fabrication and test of more complex LH structures. Measurements will be performed in a laboratory environment to be able to quantify the LH material parameters, namely the permeability and permittivity. Comparison of the test results with requirements derived from proposed and new potential applications will be done. Effective electrical permittivity and magnetic permeability, transmitted power and absorption will be included in this comparison. Applications will be identified for the enhanced (tunable, switchable) LH materials developed and tested in WP3. Applications will include phased array antenna systems, low observables, RF lenses and filters, and remote imaging systems.

MILESTONES
Left-handed (LH) materials are composite materials with novel and unique electromagnetic properties, which are not determined by the fundamental physical properties of their constituents but by the shape and the distribution of specific patterns included in them. LH materials have the unique property of having both the effective permittivity and the effective permeability negative. The aim of this proposal is the theoretical understanding, analysis, development and testing of LH materials, and also the investigation of their feasibility for commercial telecommunication applications. These applications include RF absorbers, radomes, wide-angle impedance matching sheets for phased array antennas, generation of nearly divergence-free RF beams, RF lenses, variable negative filters and remote imaging.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

FOUNDATION FOR RESEARCH AND TECHNOLOGY - HELLAS
Address
Vassilika Vouton
71110 Iraklio, Crete
Greece

Participants (2)

BILKENT UNIVERSITESI
Turkey
Address

06800 Bilkent, Ankara
IMPERIAL COLLEGE OF SCIENCE, TECHNOLOGY AND MEDICINE
United Kingdom
Address
South Kensington Campus, Exhibition Road
SW7 2AZ London