Metaferrites: using electromagnetic bandgap structures to synthesize metamaterial ferrites

A methodology is presented for the design synthesis of metamaterial ferrites, or metaferrites, that retain their desirable magnetic properties at frequencies above 1 GHz. The design synthesis is accomplished by optimizing a high impedance frequency selective surface (HZ-FSS) structure via a genetic...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2005-04, Vol.53 (4), p.1382-1389
Main Authors: Kern, D.J., Werner, D.H., Lisovich, M.
Format: Article
Language:English
Subjects:
Absorption
Algorithm design and analysis
Applied sciences
Artificial ferrite
Design optimization
Diffraction, scattering, reflection
electromagnetic bandgap (EBG)
Exact sciences and technology
Ferrites
Frequency synthesizers
genetic algorithm (GA)
Genetic algorithms
Ground plane
Magnetic materials
Magnetic permeability
Magnetic properties
Metamaterials
Periodic structures
Permeability
Radiocommunications
Radiowave propagation
Surface impedance
Synthesis
Telecommunications
Telecommunications and information theory
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Summary:A methodology is presented for the design synthesis of metamaterial ferrites, or metaferrites, that retain their desirable magnetic properties at frequencies above 1 GHz. The design synthesis is accomplished by optimizing a high impedance frequency selective surface (HZ-FSS) structure via a genetic algorithm (GA) for the desired effective permeability of an equivalent magnetic substrate backed by a perfect electric conductor ground plane. The ability to optimize the design parameters of these HZ-FSS structures allows for the possibility of synthesizing low-loss dispersive metaferrites with either a positive or a negative real part of the effective permeability at the desired operating frequency band. The results presented in this paper demonstrate five possible metaferrite designs: two with the associated real and imaginary permeabilities for use as low-loss magnetic materials, and three designs for use as absorbing materials.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2005.844410