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Metasurface-based multi-beam high-orientation trihedral corner reflector antenna

An angle reflective surface and multi-beam technology, which is applied in the fields of antenna, wireless communication and radar, can solve the problems of limited gain improvement, reduced antenna backscattering characteristics, and inability to achieve calibration, so as to effectively increase antenna gain and improve beam Calibration effect, effect of position parameter optimization

Active Publication Date: 2018-09-07
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since there is no specific radiation focus on the angled reflector, the radiation beam emitted from the feed antenna cannot be well calibrated, and the gain improvement is extremely limited
On the other hand, the angle design of the reflective surface will also cause strong backscattering
For example, in 2013, Qu Shaobo and others published "Design of a New Dihedral Reflector Loaded with Metamaterial Absorber" in "Journal of Air Force Engineering University" (Natural Science Edition) (No. 6), and in "Electronic "Components and Materials" (No. 10) published "A New Trihedral Reflector Design Loaded with Metamaterial Absorbers", which effectively reduces the scattering characteristics of the reflective surface by using the metamaterial absorber structure, but does not consider reflection The radiation problem of the planar antenna, and the multi-beam construction is not involved
In 2015, the application publication number was CN 104682012 A, and the patent application titled "High-gain low-scattering angle reflective surface loaded with gradient corrugation" disclosed a high-gain low-scattering angle reflective surface loaded with gradient corrugation. A set of metal corrugated structures with gradual changes in height is loaded on the angled reflective panel, which simply and effectively calibrates the spherical wave of the feed source to emerge as a plane wave, thereby effectively improving the radiation gain and greatly reducing the backscattering characteristics of the antenna. However, this invention only It is effective for a single dihedral angle reflector structure, but cannot be applied to a three-dimensional angle reflector, and does not consider the performance improvement of multi-beam antennas

Method used

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Examples

Experimental program
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Embodiment 1

[0036] refer to figure 1 , a four-beam highly directional three-sided angled reflector antenna based on a metasurface, including a metal base plate 1, a dielectric plate 2, four right-angled isolation plates 3, a symmetrical metal ring structure 4, four spherical wave feed sources 5, and a support rod 6.

[0037] The metal bottom plate 1 adopts a square with the same surface size as the medium plate 2, the medium plate 2 and the metal bottom plate 1 form a stacked structure up and down, and the metal bottom plate 1 is bonded to the lower surface of the medium plate 2; the metal bottom plate 1 is made of metal Copper material, in order to improve the structural strength of the present invention, the thickness of the metal base plate 1 is 0.5mm; the dielectric plate 2 is made of FR4 material, the thickness is 1mm, and M×M periodically arranged symmetrical metal ring structures are printed on its upper surface 4. M≥20.

[0038] The M×M periodically arranged symmetrical metal ri...

Embodiment 2

[0051] The shape and size of the metal base plate 1 and the dielectric plate 2, the number and size of the isolation plate 3, and the number and position of the spherical wave feed source 5 of this embodiment are different from those of the first embodiment, and other structures and principles are the same as those of the first embodiment. same.

[0052] This embodiment achieves the performance of highly directional radiation with five beams in space. The metal base plate 1 and the dielectric plate 2 adopt the same regular pentagonal plate surface structure, with a side length of 102.7 mm; five isosceles right-angled triangle isolation plates 3 are respectively fixed On the line connecting the center point of the upper surface of the regular pentagonal dielectric board 2 and the five vertices, the length of the two waists is 87.4 mm, and the length of the base is 123.6 mm. The phase center positions of the five spherical wave feed sources 5 are respectively 60mm away from the ...

Embodiment 3

[0054] The shape and size of the metal base plate 1 and the dielectric plate 2, the number and size of the isolation plate 3, and the number and position of the spherical wave feed source 5 of this embodiment are different from those of the first embodiment, and other structures and principles are the same as those of the first embodiment. same.

[0055] This embodiment realizes the performance of highly directional radiation with six beams in space. The metal base plate 1 and the dielectric plate 2 adopt the same regular hexagonal plate surface structure, with a side length of 98.8 mm; six isosceles right-angled triangle isolation plates 3 are respectively fixed on On the diagonal of the upper surface of the regular hexagonal dielectric plate 2, the length of the two waists is 98.8mm, and the length of the bottom is 139.7mm. The phase center positions of the six spherical wave feed sources 5 are respectively 61mm away from the apex of the three-sided angled reflector unit in ...

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Abstract

The invention provides a metasurface-based multi-beam high-orientation trihedral corner reflector antenna. The invention aims to realize multi-beam directional radiation and effectively weaken scattering intensity. The metasurface-based multi-beam high-orientation trihedral corner reflector antenna includes a metal bottom plate, a dielectric plate, a plurality of right-angled isolation plates anda plurality of spherical wave feed sources; the dielectric plate and the metal bottom plate form an upper-and-lower laminated structure; the right-angled isolation plate comprises a right-angled metalplate and right-angled dielectric plates attached to two side surfaces of the right-angled metal plate; symmetrical metal ring structures arranged periodically are printed on the upper surface of thebottom surface dielectric plate and the outer surfaces of the two side surface dielectric plates; the metal rings provide phase compensation for incident waves, so that the calibration of outgoing plane waves can be realized; the plurality of isolation plates and the bottom surface dielectric plate form a plurality of trihedral corner reflection surface units of the same structure; and the spherical wave feed sources are arranged beside the center positions of the aperture surfaces of the reflection surface units and are fixed by three supporting rods connected to the three vertices of the aperture surface of each reflection surface unit. With the metasurface-based multi-beam high-orientation trihedral corner reflector antenna of the invention adopted, the directional radiation of four beams, five beams and six beams can be realized.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to an angle reflector antenna, in particular to a metasurface-based four-beam, five-beam and six-beam high-directional three-angle reflector antenna, which can be used in the fields of wireless communication and radar. technical background [0002] Multi-beam antenna technology can cover a wide range of transmission areas with high gain. The demand for satellite communications, radar reconnaissance, electronic countermeasures, and microwave transmission continues to expand. It has become the next-generation satellite antenna, multi-target tracking radar and global electronic countermeasures. important direction of development. [0003] For highly directional multi-beam antennas, antenna design and beam design are not only the difficulty of its design, but also the key technologies. Due to its special three-dimensional planar structure, the angle reflector has natural advantages in c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q19/10H01Q15/18H01Q15/00H01Q13/02
CPCH01Q13/02H01Q15/0013H01Q15/18H01Q19/106
Inventor 杨锐郭海琼刘瑾李佳成李冬张澳芳
Owner XIDIAN UNIV
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