X-waveband circular polarization rotation direction regulator based on metasurface

A metasurface, X-band technology, applied in the direction of electrical components, antennas, etc., can solve the problems of narrowing the frequency band, complex structure of circularly polarized wave controllers, etc., and achieve the effect of increasing selectivity, good practical value, and easy production

Inactive Publication Date: 2020-03-24
XIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a metasurface-based X-band circular polarization handedness controller, which solves the problems of the existing circular polarization controller with complex structure and extremely fast narrowing of the frequency band when the incident angle is greater than 30°

Method used

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  • X-waveband circular polarization rotation direction regulator based on metasurface
  • X-waveband circular polarization rotation direction regulator based on metasurface
  • X-waveband circular polarization rotation direction regulator based on metasurface

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Embodiment

[0037] Assume that the X-band circular polarization handedness regulator includes several metasurface units 4, the array size is n*n, n=20; the underlying metal 1 is made of copper; the intermediate dielectric substrate 2 is ε r =4.4,μ r =1, the FR-4 material of the loss tangent tanδ=0.025; the metal pattern layer 3 has an electrical conductivity of 5.8×10 7 S / m copper material. The specific structure is as figure 2 shown.

[0038] image 3 (a)-(c), the side lengths of the bottom metal 1 and the intermediate dielectric substrate 2 are all the same, both are p and p=10.5mm; the thickness of the bottom metal 1 is hd=0.3mm, and the thickness of the intermediate dielectric substrate 2 is hm= 3.1mm; the thickness of the metal pattern layer 3 is hu=0.035mm, the long axis 5 is placed along the diagonal line from the upper left corner to the lower right corner of the substrate material, the long axis 5 is perpendicular to the side arm a6 and the side arm b7, and the long axis 5 ...

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Abstract

The invention discloses a metasurface-based X-band circular polarization rotation direction regulator which comprises a plurality of metasurface units arranged in an array, and the size of the array is n * n; each metasurface unit comprises bottom layer metal, a middle dielectric substrate and a metal pattern layer which are sequentially arranged from bottom to top, and the geometric centers of the bottom layer metal, the middle dielectric substrate and the metal pattern layer are located on the same central axis. Compared with a traditional circular polarization converter, the X-band circularpolarization rotation direction regulator is simple in structure and easy to manufacture; a Z-shaped metal pattern layer is adopted; excellent performance is shown during vertical incidence and small-angle incidence; compared with the prior art, the X-ray tube has the advantages that the X-ray tube has excellent performance in large-angle oblique incidence and high tolerance to incident angles, angle selectivity can be improved on the premise that X-band performance is kept unchanged, the problem that the frequency band becomes narrow at a high speed when the incident angle is larger than 30degrees is solved, and the X-ray tube has high practical value.

Description

technical field [0001] The invention belongs to the technical field of circular polarization handedness equipment, and in particular relates to an X-band circular polarization handedness controller based on a metasurface. Background technique [0002] Polarization is one of the basic characteristics of electromagnetic waves, which can be divided into three types: linear polarization, circular polarization, and elliptical polarization. Among them, circular polarization can be divided into left-handed circular polarization and right-handed circular polarization. Since linearly polarized waves with different orientations can be received by circularly polarized antennas, circularly polarized antennas play an important role in communication systems such as satellites and rockets. With the diversification of application scenarios, people hope to be able to change the hand direction of circularly polarized waves and realize the free regulation of polarization. [0003] Metamateri...

Claims

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Application Information

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IPC IPC(8): H01Q15/24
CPCH01Q15/242
Inventor 王明军翟治珠王文静林妞妞吴必园
Owner XIAN UNIV OF TECH
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