Large-spacing array antenna based on subarray-level mixed arrangement and design method

An array antenna and design method technology, applied in the field of antennas, can solve the problems of large spacing, deterioration of array sidelobe levels, and high dependence, and achieve the effects of reducing array channels, facilitating maintenance, and simple arrangement

Pending Publication Date: 2022-08-02
10TH RES INST OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method also relies heavily on algorithms and computing resources, and when this method is applied to the array design with a cell spacing greater than 2 wavelengths, the middle sub-ar

Method used

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  • Large-spacing array antenna based on subarray-level mixed arrangement and design method
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  • Large-spacing array antenna based on subarray-level mixed arrangement and design method

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Embodiment 1

[0059] A large-spacing array antenna based on a sub-array-level hybrid array, including an antenna front, the antenna front is formed by regular modular identical sub-arrays arranged according to a hybrid array rule, and the antenna front is Axisymmetric and centrosymmetric distribution.

Embodiment 2

[0061] On the basis of Embodiment 1, the hybrid array rule includes two array modes, grid-encircled arrangement and rectangular arrangement, and a boundary position is set, and the surrounding sub-arrays larger than the boundary position constitute a grid-around arrangement, so as to The inner sub-arrays smaller than the boundary position form a rectangular arrangement.

Embodiment 3

[0063] On the basis of Embodiment 1 or Embodiment 2, a rectangular xoy coordinate system is established with a geometric center, and the entire antenna array is divided into first, second, third, and fourth quadrants.

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PUM

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Abstract

The invention discloses a large-spacing array antenna based on subarray-level mixed arrangement and a design method, and belongs to the technical field of antennae, an antenna array surface is formed by arranging regular modularized same subarrays according to a mixed arrangement rule, a rectangular coordinate system is established by taking a geometric center, and the whole array surface is in axial symmetry and central symmetry. The mixed arraying rule comprises two arraying modes of ring grating arraying and rectangular arraying, the position of one half radius is taken as a boundary, the peripheral sub-arrays larger than one half radius form the ring grating arraying, and the inner sub-arrays smaller than one half radius form the rectangular arraying. According to the invention, a relatively low side lobe of a large-spacing array can be ensured, and a relatively good grating lobe suppression effect can be realized; the same sub-array based on modularization can greatly simplify the design difficulty of the array, and the hybrid array arrangement mode can reduce the implementation difficulty of the array structure.

Description

technical field [0001] The invention relates to the technical field of antennas, and more particularly, to a large-spacing array antenna and a design method based on a sub-array-level hybrid array. Background technique [0002] The phased array antenna can quickly scan the beam by independently controlling the amplitude and phase of the radiation unit, and has been well used in radar, communication, measurement and control and other fields. In order to ensure better radiation performance, the element spacing of the phased array antenna is often small, close to half wavelength, and at the same time to achieve higher gain, the aperture of the phased array antenna needs to be proportionally enlarged, which will inevitably lead to the geometrical number of antenna elements. The multiple growth leads to higher and higher system costs, and more and more difficulty in heat dissipation and structural design. The solution is to reduce the number of cell channels by increasing the ar...

Claims

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Application Information

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IPC IPC(8): H01Q21/20H01Q21/06
CPCH01Q21/20H01Q21/061H01Q21/0087
Inventor 杨龙刘田张旭吴丹王娜谢伟
Owner 10TH RES INST OF CETC
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