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In this paper, a novel broadband microwave metamaterial absorber is successfully realized by randomly distributed metallic loop-shaped elements. Such amorphous arrangement of single-sized elements can result in a spatially disordered distribution of multi-resonance absorption, thus dramatically improving the absorption bandwidth. On this basis, we further broaden the bandwidth by using three differently...
A broadband metamaterial (MM) absorber based on water droplets is proposed and investigated in this paper. The proposed MM absorber is composed of a periodic array of holes drilled in the dielectric substrate which are then filled with water droplets. The absorption property of such water absorber can be tuned by manipulating the volume of the water droplets. Through optimized design, a broadband...
This paper presents a novel design of orientation distributed digital metasurface for suppressing backward radar cross section (RCS) with a broad working bandwidth. A corrugated meander line is proposed as the constitutive unit cell which is capable of creating 1-bit (with two orientations of 0° and 90°), 2-bit (with four orientations of 0°, 45°, 90° and 135°) and multi-bit elements by different orientations...
In this paper, a flat meta-surface constructed by an ensemble of unit cells using I shaped resonant structure is proposed and designed to provide phase discontinuity for electromagnetic wave front manipulation. We demonstrate experimentally that electromagnetic wave deflection is achieved in compliance with the generalized Snell's law at the designed frequency band (around 10 GHz). In addition, the...
Swiss rolls, consisting of a helically wound metal/dielectric laminate tape are utilized to achieve a novel ultrathin metamaterial absorber (MA) with a thickness of only about less than two percent of the incident wavelength. An intense magnetic resonance happens accompanied by strong absorption efficiency above 95% for both the TE and TM incident waves at the resonant frequency with the incidence...
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