By A. Sihvola (auth.), Saïd Zouhdi, Ari Sihvola, Mohamed Arsalane (eds.)
The NATO complex learn Workshop Bianisotropics 2002 was once held in th Marrakesh, Morocco, in the course of 8-11 may perhaps 2002. This used to be the nine overseas convention on Electromagnetics of advanced Media, belonging to a chain of conferences the place the point of interest is on electromagnetics of chiral, bianisotropic, and different fabrics which may reply to electrical and magnetic box excitations in specified demeanour. the 1st of those conferences was once held in Espoo, Finland (1993), and the next venues have been Gomel, Belarus (1993), Perigueux, France (1994), kingdom university, Pennsylvania, united states (1995), the rivers and channels among St. Petersburg and Moscow in Russia (1996), Glasgow, Scotland (1997), Brunswick, Germany (1998), and Lisbon, Portugal (2000). the current publication comprises complete articles of a number of of the displays that got within the Marrakesh convention. In Bianisotropics 2002, eight re view lectures, 14 invited lectures and sixty eight contributed talks and posters have been awarded. of those displays, after a double evaluate strategy, 28 contributions have accomplished their ultimate shape at the pages to stick with. From the contributions ofthe assembly, additionally one other booklet is being deliberate: a different factor of the magazine Electromagnetics could be dedicated to complicated fabrics. visitor editors for this factor are Keith W. Whites and acknowledged Zouhdi. The chairmen of Bianisotropics 2002conference have been acknowledged Zouhdi (Pierre et Marie Curie college - Paris) and Mohamed Arsalane (Cadi Ayyad college - Marrakesh), who have been assisted via Scientists from Moroccan Universities and the foreign Bianisotropics convention Committee.
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Extra info for Advances in Electromagnetics of Complex Media and Metamaterials
Typical properties of the different categories of composites are illustrated. The permeability of the magnetic inclusions is often adequately described by a conventional uniform rotation model, but the existence of non uniform modes may provide further opportunities to synthesize other types of permeability response. Two theoretical guidelines for the frequency response engineering are presented. First, a definition of the effective permeability and permittivity is proposed. This definition is based on the fact that the quantities measured experimentally are the Fresnel Reflection and Transmission coefficients.
F s !? iw -15 +-~'-t\-IHli'I'N'-----t--+---1 u. ~ -20+---+ lJl -5 10 ~-10 ~ N Frequency (GHz) " CIl -IS -20 750e -25 L - _ - ' - _ - ' - _ - - - '_ _-'--_-' -25 b) 2000. / I I 10 1/ VoCe c) Figure 14. a) Sketch of a microwave filter consisting of a LIFE material inserted in a microstrip line; b) operation with an external magnetic field along the microstrip line; c) operation with an external magnetic field normal to the microstrip line and in the lamination plane. 2 TUNING P. TROUGH AN EXTERNAL STRESS Another way to tune the microwave response of a material is to exert a significant stress.
Introduction Magnetic materials are important for a variety of use at microwave frequencies. They areused as non reciprocal media, or to provide high impedance properties, or for Electro Magnetic Compatibility issues. Ferrites and Garnets have been the most used magnetic microwave materials up to now. However, ferromagnetic metals have better intrinsic magnetic properties, due to their high saturation magnetization, and they are already preferred to ferrites for a variety of use, such 39 s. Zouhdi et aI.