Low-RCS ultra-wideband metamaterial wave absorber with insensitive polarization and capable of transmitting visible light
A visible light and ultra-broadband technology, applied in the direction of electrical components, antennas, etc., can solve the problems of low radar scattering cross-sectional area, low profile, etc., and achieve the effects of good angular stability, large application potential, and easy processing
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[0028] Specific implementation mode 1: Combination Figure 1 to 2 Specifically, this embodiment is a polarization-insensitive low-RCS ultra-broadband metamaterial absorber for visible light transmission. It consists of a patterned impedance film layer, a first transparent substrate, an intermediate transparent medium layer, and The second transparent substrate and the transparent conductive film composition;
[0029] The thickness of the patterned resistive film layer is 0.01 μm to 3 μm; the thickness of the first transparent substrate and the second transparent substrate are both 0.05 mm to 2 mm; the thickness of the intermediate transparent medium layer is 1 mm to 8 mm; The thickness of the transparent conductive film is 0.01μm~3μm;
[0030] The patterned resistive film layer is composed of N×M transparent patterned resistive film units in an array; the N≥12 columns, the M≥12 rows, and between adjacent transparent patterned resistive film units The minimum distance is 0.1mm~5mm...
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[0037] Embodiment 2: This embodiment is different from Embodiment 1 in that the material of the intermediate transparent medium layer is one or two of transparent polymer and transparent inorganic material. Others are the same as the first embodiment.
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[0038] Specific embodiment three: this embodiment is different from one of specific embodiments one or two in that the intermediate transparent medium layer is air, specifically the surrounding support frame is made of transparent composite material, and the first transparent substrate is used as the top , With the second transparent substrate as the bottom, the inside is filled with air. Others are the same as the first or second embodiment.
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