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We proposed an ultra-thin absorber, which consists of a two dimensional metallic Jerusalem cross array and a metallic ground plane separated by a dielectric layer, with its thickness is about λ/44 at the lowest resonant frequency. The simulated results indicate that this structure can perform absorbing peaks at dual resonant frequencies 3.25 GHz and 6.77 GHz with the absorption of 99% and 96%, respectively...
This paper presents a design method of broadband radar absorber (RA) combining together the features of frequency selective surfaces (FSSs), subwavelength hole array, and magnetic absorbing sheets. The absorber is constructed of a periodic array of square conducting patches embedded into a magnetic absorbing substrate perforated with circular hole arrays and backed by a metal ground. The absorption...
Wireless power transfer based on witricity technology is a new technology which energy can be transferred via coupled magnetic resonances in the non-radiative near-field. In order to verify its feasibility, coupled mode theory and power transfer system structure was proposed in this paper. Based on these analysis, The wireless power transfer experimental device is designed. Experimental results shows...
In this paper, a resonant coupling wireless power transmission system whose resonator using single-layer helical coils is designed. Based on analysis of equivalent circuit, the efficiency and optimal transmission distance are obtained, and its correctness is verified by experiment. The resonant frequency and electromagnetic field distribution of system are obtained through high frequency finite element...
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