nth order Rose curve as a generic candidate for RF artificial magnetic material

• Published in: Applied physics. A, Materials science & processing Vol. 103; no. 3; pp. 831 - 834
• Main Authors: Kabiri, A., Ramahi, O. M.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01.06.2011
• Subjects: Characterization and Evaluation of Materials; Condensed Matter Physics; Dispersions; Flexibility; Inclusions; Machines; Magnetic materials; Magnetic permeability; Magnetic properties; Manufacturing; Mathematical models; Nanotechnology; Optical and Electronic Materials; Permeability; Physics; Physics and Astronomy; Processes; Surfaces and Interfaces; Thin Films; Magnetic Response; Effective Permeability; Wide Frequency Band; Host Medium; Microstrip Antenna
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-010-6222-y

Recent work demonstrated that the permeability and magnetic loss tangent of artificial magnetic material inclusions can be represented simply in terms of the circumference and area of the inclusion. While such a representation makes direct use of the inclusion’s circuit model, the fact that the magnetic properties can be described in terms of the perimeter and area of the inclusion facilitates designing inclusions that achieve specific constraints without the need for intensive full-wave trial and error simulations. Because of such flexibility, we propose a new set of generic curves described as n th order Rose curves to be candidates for AMMs. In fact, the new curves not only provide significant design flexibility, but provide features not present in traditional topologies, most pronouncedly a wider band over which negative permeability is achieved with low dispersion.