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A new way to design coding phase gradient metasurface (CPGM) is proposed in this work. Different from the previous CPGM, the modulation of coding elements and coding sequences can be achieved simultaneously. Thus, the manipulations of electromagnetic (EM) wave will be more flexible for CPGMs. As an example, CPGMs with and without modulation of coding elements are achieved. The co-polarization reflection...
In this paper, we propose a polarization-independent and broadband perfect metamaterial absorber operating in mid-infrared region. The proposed absorber is a periodic meta-atom array consisting of metal-dielectric-multilayer truncated cones, which can control gray- or black-body thermal signatures. The simulation is implemented using CST Microwave Studio. The simulated results show that the proposed...
Phase gradient metasurfaces (PGMs) are the two-dimensional metamaterial. It can manipulate the propagation direction, wave front and polarization of the reflected/transmitted waves with more freedom. In this paper, the phase gradient metasurfaces are used as the radomes to manipulate the direction of the main lobe or to improve the directivity of the patch antenna. Based on the transmissive polarization...
In this letter, we present a new beam shaped microstrip patch antenna(MPA) by matematerial units. Due to the effective phase gradient provided by matematerial units, the beamwidth broadens and the beam symmetrically expands. To demonstrate this method, we designed a microstrip patch antenna with matematerial units etched on the substrate. An experiment was carried out to verify our design method....
Gradient metasurfaces (GMs) can provide additional parallel wave vectors for reflected waves and thus anomalous reflection can be induced. Hence, EM wave reflection can be redirected using reflective GMs. In this paper, we focus our research on the manipulation of EM wave reflection using reflective GMs under normal incidence both theoretically and experimentally. The design theory of reflective GMs...
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