Low-profile and low-scattering ultra-wideband phased array antenna loaded with polarization selective wave metamaterial absorber

A wave absorber and low-profile technology, applied in the field of phased antenna arrays, can solve problems such as RCS reduction, and achieve the effect of reducing scattering, low-profile characteristics, and reducing antenna scattering

Active Publication Date: 2019-06-14
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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  • Low-profile and low-scattering ultra-wideband phased array antenna loaded with polarization selective wave metamaterial absorber
  • Low-profile and low-scattering ultra-wideband phased array antenna loaded with polarization selective wave metamaterial absorber
  • Low-profile and low-scattering ultra-wideband phased array antenna loaded with polarization selective wave metamaterial absorber

Examples

Experimental program
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Effect test

Embodiment 1

[0027] refer to Figure 1 to Figure 2 , Embodiment 1 is composed of a layer of periodic structure printed with closely arranged even units, using periodic boundary conditions to simulate the simulation of the present invention in an infinite array environment. The structure of the antenna unit of the present invention is described as follows: the unbalanced feeding structure (1) of the antenna; the metal short-circuit column (2) for suppressing common mode resonance; the metal floor (3) with a certain thickness; The dielectric substrate (4); the dipole radiation unit (5); the capacitor sheet (6) on the back of the dipole unit; the polarization grid (7) printed on the back of the radiation unit; the first wide-angle impedance matching layer (8 ); the second layer wide-angle impedance matching layer (9); the first layer has a snake-shaped resistive patch (10) with self-coupling capacitance; the parallel capacitive block (11) loaded at the end of the first layer resistive patch u...

Embodiment 2

[0031] specifically. Each antenna element (such as figure 2 shown) are extended along the two-dimensional direction of the array respectively to form figure 1 A low-profile low-scattering ultra-broadband phased array loaded with 7×14 polarization-selective absorbers. Other structures are the same as those in Embodiment 1, and will not be repeated here.

[0032] Considering the conditions of the existing simulation hardware facilities, the RCS of the array antenna in Embodiment 1 adopts the unit analysis method for the RCS of the phased array antenna in the electromagnetic simulation, and simulates the unit under periodic boundary conditions. Figure 7 to Figure 9 A comparison chart of single-station RCS results at different angles of incidence is given in Example 2 and Example 2 without absorbers. It can be seen that the phased array developed in Example 2 has good low RCS characteristics.

[0033] In this implementation example, the array is figure 2 A 10×10 array of pe...

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Abstract

The invention discloses a low-profile and low-scattering ultra-wideband phased array antenna loaded with a polarization selective wave metamaterial absorber. E-face +/-60-degree scanning and H-face +/-60-degree scanning are realized in a wide band of 6-18GHz, and the cross-section height is only 0.42 of the high frequency (18Ghz) wavelength. The cross polarization of the antenna can be effectivelyimproved through a polarization grating printed on the back surface of a radiation patch unit, and meanwhile, through the loaded polarization selective wave metamaterial absorber, the cross polarization RCS of the antenna is remarkably reduced within the full frequency range of the antenna working frequency without affecting the radiation performance of the antenna, and the absorption effect of the large-angle incident cross polarization electromagnetic wave is good.

Description

technical field [0001] The invention belongs to the technical field of antenna engineering, in particular to a low-profile, low-scattering ultra-wide bandwidth angle-scanning phased antenna array system, specifically a polarized selective absorber (Polarization Sensitive) based on the strong mutual coupling effect Metamaterial Absorber, PSMA), with a low profile, good scattering characteristics, and a phased antenna array that can realize ultra-wide bandwidth angular scanning. It is especially suitable for platforms that require antennas with good stealth performance and low profile characteristics, and can achieve 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 as RCS, is an important indicator to measu...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q9/16H01Q17/00H01Q19/10H01Q21/06
Inventor 杨仕文张哲晨屈世伟陈益凯胡俊赵志钦
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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