A functionally reconfigurable metamaterial broadband polarization converter/absorber
A wide-band polarization and metamaterial technology, applied in the direction of antennas, electrical components, etc., can solve problems such as impact, achieve broad application prospects, easy processing, and increase the effect of transformation and absorption
Active Publication Date: 2020-12-25
SHANXI UNIV
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Problems solved by technology
[0004] The present invention provides a reconfigurable function for the problem that the existing controllable reflective metamaterial polarization converter will reflect almost all the incident electromagnetic waves and affect other working devices when the polarization conversion function is turned off. Metamaterial Broadband Polarization Converter / Absorber
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[0023] In order to make the object, technical solution and effect of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0024] Such as figure 1 , Figure 4 As shown, a functionally reconfigurable metamaterial broadband polarization converter / absorber, including a first dielectric layer 2, an air layer 3 and a second dielectric layer 5 arranged in sequence from top to bottom, in the first A resonant structure layer 1 is etched on the upper surface of the dielectric layer 2, and the resonant structure layer 1 is formed by N×N rhombic-X-shaped metal resonators 7 arranged periodically in the same plane, where N is a natural number. Such as figure 2 , image 3 As shown, the rhombic-X-shaped metal resonator 7 is forme...
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Abstract
The invention relates to a function-reconfigurable metamaterial broadband polarization converter / absorber. The converter / absorber comprises a first dielectric layer, an air layer and a second dielectric layer which are sequentially arranged from top to bottom, a resonance structure layer is arranged on an upper surface of the first dielectric layer; the upper surface of the second dielectric layeris covered with a metal reflecting plate, a lower surface of the second dielectric layer is provided with a bottom feed network, and the bottom feed network is connected with each rhombus-X-shaped metal resonator through six wires penetrating through the first dielectric layer, the air layer, the metal reflecting plate and the second dielectric layer. In the invention, a structure with a single shape is adopted, and random conversion of broadband polarization conversion and broadband absorption effects is realized by controlling a state of a switching diode so that a wider application prospect is possessed.
Description
technical field [0001] The invention belongs to the technical field of metamaterial polarization converters and absorbers, and in particular relates to a functionally reconfigurable metamaterial broadband polarization converter / absorber. Background technique [0002] Metamaterial is a special artificial material designed and synthesized according to production needs. By rationally designing its structure and size, the electromagnetic parameters of metamaterial can be artificially manipulated, so as to realize special functions that materials in nature do not have, such as negative refraction, Electromagnetic stealth and inverse Doppler effect, etc. Due to the advantages of thin thickness, light weight, simple manufacturing process and low processing cost, metamaterials have important applications in the fields of polarization converters, absorbers, thermal radiation detectors and sensors. [0003] Polarization is one of the important properties of electromagnetic waves. Dur...
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IPC IPC(8): H01Q15/00H01Q15/24
CPCH01Q15/002H01Q15/0026H01Q15/24
Inventor 杨荣草王佳云徐建平张文梅
Owner SHANXI UNIV