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Frustum-mounted two-dimensional conformal low-scattering ultra-wideband phased array based on strong coupling effect

A strong-coupling, phased-array technology, applied in the direction of separately energized antenna arrays, antenna arrays, radiating element structures, etc., can solve the problems of sacrificing radiation aperture, unexcited, and limited effect of scattering reduction, and achieve processing and assembly Convenience, improve the effect of active standing wave

Active Publication Date: 2021-04-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resistive electromagnetic metamaterial is only a simple periodic circular patch structure, and the effect of scattering reduction is limited.
Moreover, half of the units in the array are dummy units, which are in an unexcited state, sacrificing the general radiation aperture

Method used

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  • Frustum-mounted two-dimensional conformal low-scattering ultra-wideband phased array based on strong coupling effect
  • Frustum-mounted two-dimensional conformal low-scattering ultra-wideband phased array based on strong coupling effect
  • Frustum-mounted two-dimensional conformal low-scattering ultra-wideband phased array based on strong coupling effect

Examples

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Embodiment 1

[0025] refer to Figure 1 to Figure 3 , Example 1 is a two-dimensional conformal low-scattering ultra-broadband strong-coupled phased array mounted on a conical frustum, composed of image 3 The 9×10 cells form an array, and the finite array is placed under ideal absorbing boundary conditions for simulation. The antenna unit structure of the present invention is described as follows: an unbalanced feeding structure (1) of the antenna; two metal short-circuit posts (2); a metal floor (3) with a certain thickness; a medium for supporting above the metal floor Substrate (4); the dipole radiating unit (5) of the strong capacitive coupling structure printed on the upper surface of the above-mentioned supporting medium substrate, and the two metal short-circuit columns are respectively arranged on the left and right arms of the dipole radiating unit; The first wide-angle impedance matching layer (6) above the substrate; the resistive printing medium layer (7) above the first wide-a...

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Abstract

The invention discloses a frustum-mounted two-dimensional conformal low-scattering ultra-wideband phased-array antenna based on a strong coupling effect. The frustum-mounted two-dimensional conformal low-scattering ultra-wideband phased-array antenna is completely conformal on the surface of a frustum, the distance between dipole radiation units along the circumferential direction is linearly changed along with the generatrix of the frustum, the dipole radiation units are arranged in a conically-changed array mode, and + / -45-degree scanning of an E surface and an H surface is realized in a broadband range of 6-18GHz. By loading strip metal patches, active standing wave deterioration caused by a conformal environment is effectively improved. In addition, a quasi-periodic electromagnetic metamaterial is loaded in the full-frequency range of the working frequency of the phased-array antenna, so that the cross polarization RCS of the phased-array antenna is remarkably reduced, and the overall radiation efficiency of the conformal phased array is ensured to be at a relatively high level. Finally, the application of a full split ring helps to realize the scattering features of the phased-array antenna while the phased-array antenna has the ultra-wide-band wide-angle scanning feature.

Description

technical field [0001] The invention belongs to the technical field of antenna engineering, and in particular relates to a two-dimensional conformal, low-scattering ultra-wide bandwidth angular scanning phased antenna array system, specifically a conformal antenna array system based on strong mutual coupling effect and loaded with electromagnetic metamaterials Based on the frustum carrier, the scattering characteristics are good, and the phased antenna array that can realize ultra-wide bandwidth angular scanning. It is especially suitable for platforms that require good antenna stealth performance and conformal integration with the platform, and can realize ultra-wide bandwidth angular scanning. Background technique [0002] With the development of information warfare, especially the rapid progress of radar detection technology, stealth technology occupies an increasingly important position in modern electronic warfare. Radar Cross Section (Radar Cross Section), referred to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/06H01Q9/16H01Q1/38H01Q1/48H01Q1/50H01Q15/00
CPCH01Q1/38H01Q1/48H01Q1/50H01Q9/16H01Q15/0086H01Q21/06H01Q21/062
Inventor 杨仕文张哲晨屈世伟陈益凯胡俊
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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