Low profile low RCS ultra wide band wide-angle scanning strong mutual coupling phased array antenna based on polarization conversion metamaterial

A phased array antenna and polarization conversion technology, which is applied to antenna combinations, antennas, antenna arrays and other directions with different interactions, can solve problems such as being in the blank stage, and achieve the effects of reducing self-weight, lifting capacity, and reducing impedance

CN107331977AActive Publication Date: 2017-11-07UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2017-11-07

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Abstract

The invention discloses a low profile low RCS ultra wide band wide-angle scanning strong mutual coupling phased array antenna based on a polarization conversion metamaterial. The antenna can achieve two-dimensional wide-angle scanning in four octaves with a profile height of only 0.267 times of the high-frequency wavelength, the low profile requirement of the antenna is met, and meanwhile the RCS of the antenna is effectively reduced under the premise that the new polarization conversion material loaded does not affect the radiation performance of the antenna. The whole antenna structure mainly comprises a dielectric substrate (1), an interdigital dipole unit (2) printed on the dielectric substrate; rectangular patches (3) on both sides of the dipole; a strip line Balun (4) under the dielectric substrate of the antenna for connecting an antenna and a floor; a dielectric layer (6) below of the balun and having a metal floor layer (5) on the upper surface; a polarization conversion metamaterial (7) which is loaded on the metal floor; (8) a centimeter network on the lower surface of the dielectric layer; and a microwave coaxial cable (9) fed to the centimeter network.
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Description

technical field

[0001] The invention belongs to the technical field of antenna engineering, and in particular relates to an ultra-wideband-dimensional scanning phased antenna array system, specifically a system based on a strong mutual coupling effect and loaded with a new type of polarization conversion metamaterial (PCM). At the same time, it has the characteristics of low profile and low RCS, and can realize the phased antenna array of ultra-wide bandwidth angular scanning. It is suitable for the platform that requires good antenna stealth performance and low profile characteristics, and can realize ultra-wide bandwidth angular scanning. Background technique

[0002] As an important part of the modern military field, stealth technology is also an important research direction in the current field of antenna technology. Radar Cross Section (Radar Cross Section), referred to as RCS, is a measure of the return scattering power of a target in a given direction under the illumi...

Examples

Embodiment 1

[0031] refer to figure 1 and figure 2 , the two array antennas in this embodiment are composed of a periodic structure of antenna sub-array units printed with closely arranged dipole units. Its structure includes a dielectric substrate (1); an interdigitated dipole unit (2) printed on the dielectric substrate; a rectangular patch (3) printed on both sides of the dipole; a strip-shaped patch located under the antenna dielectric substrate. wire balun (4); a medium layer (6) located below the balun and having a metal floor layer (5) on the upper surface; a one-to-two-centimeter network (8) printed on the lower surface of the medium layer; Microwave coaxial cable (9). The only difference in its structure is that figure 2 The shown antenna structure also includes a polarization conversion material (7) loaded on the metal floor above the dielectric layer. The height of the whole antenna is only 0.267 times of the high-frequency wavelength, which meets the low-profile requireme...