Two-dimensional scanning varactor active super-surface radome

A two-dimensional scanning and varactor technology, which is applied in the field of millimeter wave and terahertz communication, can solve the problems of bias line growth and excessive bias lines, and achieve the effect of reducing the number

Active Publication Date: 2019-04-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies in the prior art, and provide a two-dimensional scanning varactor active metasurface radome working in the millimeter wave and terahertz frequency bands, which is used to solve the problem of existing two-dimensional scanning varactor active metasurface radome. The number of bias lines in the surface is the same as the number of cells, so the number of bias lines increases with the square of the array size, and there are too many bias lines in large-scale varactor active metasurface arrays.

Method used

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  • Two-dimensional scanning varactor active super-surface radome
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  • Two-dimensional scanning varactor active super-surface radome

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Embodiment 1

[0031] A two-dimensional scanning varactor active metasurface radome provided in this embodiment includes a two-dimensional scanning array 2 and spacers 3 . The two-dimensional scanning array 2 is an active metasurface of multilayer varactors, and the layers are separated by spacers 3; the two-dimensional scanning array 2 consists of two one-dimensional scanning arrays: x-direction scanning array 7 and y-direction scanning array 8 in z The directions are superimposed, the y direction is used as the polarization direction of the incident wave, the z direction is used as the propagation direction of the incident wave, and the bias line directions of the varactors in the two one-dimensional scanning arrays are both in the x direction.

[0032] Further, the incident wave of the radome is a linearly polarized plane wave; the aperture size of the radome is larger than the irradiation aperture of the incident plane wave.

[0033] Further, the one-dimensional scanning array can adopt ...

Embodiment 2

[0045] A varactor active metasurface electromagnetic lens antenna provided in this embodiment includes the two-dimensional scanning varactor active metasurface radome described in Embodiment 1, focusing lens 1, support column 4, horn antenna 5 and base 6; the two-dimensional scanning array 2, the focusing lens 1, and the support column 4 are all connected sequentially through the gasket 3, the support column 4 is fixed on the base 6, the horn antenna 5 is fixed on the base 6, and the horn antenna 5 The bell mouth of the horn faces the focusing lens 1; the two-dimensional scanning array 2 is composed of two one-dimensional scanning arrays: the x-direction scanning array 7 and the y-direction scanning array 8 are superimposed in the z direction, the y direction is used as the polarization direction, and the z direction As the direction of the symmetry axis of the lens, the direction of the bias line of the two one-dimensional scanning arrays is the x direction.

[0046] Further,...

Embodiment 3

[0053] A varactor active metasurface electromagnetic lens antenna provided in this embodiment includes the two-dimensional scanning varactor active metasurface radome described in Embodiment 1. In a preferred embodiment of the present invention, the varactor active metasurface electromagnetic lens antenna works in the Ka frequency band.

[0054] refer to Figure 6 and Figure 7 as shown, Figure 6 It is a schematic diagram of the metasurface structure of the focusing lens 1 in the preferred embodiment of the present invention; Figure 7 It is a schematic diagram of the structural dimensions of the metasurface unit of the focusing lens 1 in the preferred embodiment of the present invention. The focusing lens 1 adopts a four-layer metasurface structure, and each layer is composed of periodically arranged units. Figure 6 The middle unit adopts a double-square ring structure, and a metal square ring with a width of t is etched on the printed medium board with a period of p, a...

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Abstract

The invention discloses a two-dimensional scanning varactor active super-surface radome comprising a two-dimensional scanning array and gaskets. The two-dimensional scanning array is multi-layer varactor active super surfaces, and the layers are separated by the gaskets. The two-dimensional scanning array consists of two one-dimensional scanning arrays including an x-direction scanning array and ay-direction scanning array superposed in the z direction, the y direction is the incident wave polarization direction, the z direction is the incident wave propagation direction, and the varactor bias line directions of the two one-dimensional scanning arrays are both x direction. The radome achieves two-dimensional scanning by changing the bias voltage of the varactor in the two-dimensional scanning array, and the two-dimensional scanning array achieves two-dimensional scanning through the one-dimensional scanning arrays achieved by two sets of varactor active super surfaces with orthogonalscanning directions superimposed in the longitudinal direction. According to the method, the process complexity and the implementation cost of the super surfaces in the large-scale two-dimensional scanning array can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of millimeter wave and terahertz communication, and in particular relates to a two-dimensional scanning varactor active metasurface radome. Background technique [0002] Millimeter waves are electromagnetic waves with a frequency range of 30 to 300 GHz and a wavelength of 10 mm to 1 mm. Terahertz is a frequency band with a frequency range of 300 GHz to 3 THz, and its wavelength is 1 mm to 0.1 mm. The millimeter wave band and the terahertz frequency band have the characteristics of wide frequency band, high transmission rate, small equipment size, small attenuation, and strong penetrating power. They are suitable for near-field point-to-point communication and satellite communication. Antennas applied to the millimeter wave frequency band can better meet the application scenarios, that is, meet the requirements of high convergence and high gain. [0003] The metasurface is a structure whose vertical thickne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/42H01Q3/36H01Q15/00
CPCH01Q1/422H01Q3/36H01Q15/0086
Inventor 吴锡东戴少鹏周金芳
Owner ZHEJIANG UNIV
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