1,721,135 research outputs found
Idrosadenite suppurativa (Malattia di Verneuil)dei genitali estreni: terapia chirurgica ricostruttiva
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Low Frequency Magnetic Metasurface for Wireless Power Transfer Applications: Reducing Losses Effect and Optimizing Loading Condition
Full text linkIn this paper, we analyze the operative limits and the conditions characterizing low frequency magnetic metasurfaces used in practical Wireless Power Transfer applications. In the literature, the analytical modeling of similar structures, allowing a control over their frequency response, has been already demonstrated. By starting from this point, practical aspects and differences between a purely theorical approach and real scenario constraints are highlighted and discussed. In particular, accurate and representative numerical simulations are conceived, by firstly analyzing and quantifying the effect on the metasurface performance of the resistive losses characterizing its constitutive conductive material. Then, the metasurface performance deviations produced by the interactions with additional radiofrequency coils, as in Wireless Power Transfer arrangements, are considered. In the latter case, the loading condition at the receiving coil was specifically studied. For both the considered scenarios, detailed conditions and possible solutions to alleviate these detrimental effects, which deviate the metasurface response from the desired behavior, are derived. This work can be useful to guide the design process of low frequency magnetic metasurfaces in a practical environment, achieving the best performance possible for Wireless Power Transfer applications
Plastica del glande con lembo prepuziale dopo escissione di xantoma verruciforme del pene
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RCS calculation and validation through measurements of electrically large objects partially covered with thin radar absorbing metamaterials
No full textAn efficient algorithm for the prediction of the RCS of electrically large targets, partially coated with RAM is presented. The method is used to simulate the RCS reduction of an electrically large object due to the use of RAM. A corner reflector coated with RAM is used as a test-case of the proposed method. The accuracy of the Radar Cross Section estimation is validated by comparison with measurement and the obtained results exhibit a good agreement
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