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Asymmetric transmission double-image metamaterial double-passband invisible antenna housing and design method thereof

An asymmetric transmission and design method technology, applied to antennas, radiating unit covers, electrical components, etc., can solve the problems of wasteful metamaterial utilization, strong angle sensitivity, narrow stealth frequency band, etc., and achieve reduced angle sensitivity and high efficiency Stealth, waste reduction effects

Pending Publication Date: 2022-05-27
AIR FORCE UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, most metamaterial radomes work independently under the excitation of x-polarized or y-polarized electromagnetic waves, and the scope of application is narrow, and these metamaterial radomes are often only designed on one side of the radome, which greatly wastes metamaterial utilization
In addition, metamaterial radomes often have strong angle sensitivity and narrow stealth frequency bands.

Method used

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  • Asymmetric transmission double-image metamaterial double-passband invisible antenna housing and design method thereof
  • Asymmetric transmission double-image metamaterial double-passband invisible antenna housing and design method thereof
  • Asymmetric transmission double-image metamaterial double-passband invisible antenna housing and design method thereof

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Embodiment 1

[0044] like Figure 1 to Figure 3 As shown, this embodiment provides an asymmetric transmission double-sided image metamaterial double-passband stealth radome, the radome is composed of a plurality of radome units arranged in an arrangement, and the radome unit includes: a phase control structure, a dual-passband polarization conversion structure and absorbing structure.

[0045] Specifically, the phase control structure is used to completely reflect the incident y-polarized wave and adjust the phase, and completely transmit the incident x-polarized wave. The dual-pass-band polarization conversion structure constructed by using the vertical grating structure greatly improves the polarization conversion efficiency. The absorbing structure is used to completely absorb the incident x-polarized wave and transmit the y-polarized wave.

[0046] like Figure 4 shown, when the frequency is f 1 and f 2 When the x-polarized wave is incident along the +z direction, the radome can co...

Embodiment 2

[0064] This embodiment provides a design method for a double-pass-band stealth radome of asymmetric transmission double-sided image metamaterial, including:

[0065] Step 1, based on the Fabry-Perot resonant cavity structure, determine a dual-pass-band polarization conversion structure, wherein the dual-pass-band polarization conversion structure includes a first metal grating, a first metal strip, a second metal grating, and a first dielectric plate ; wherein, the first metal strip is inclined in a counterclockwise direction, and the inclination angle of the first metal strip is 45°. The number of the first metal strips is three, and the length of the first metal strip in the middle is greater than that of the first metal strips on both sides, and the lengths of the first metal strips on both sides are equal.

[0066] Specifically, in order to realize the stealth function of the radome, it should be able to realize dual-pass-band polarization conversion and transmission, and ...

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Abstract

The invention discloses an asymmetric transmission double-sided image metamaterial dual-passband stealth antenna housing and a design method thereof, the antenna housing is formed by periodic continuation of antenna housing units, and each antenna housing unit comprises a phase regulation and control structure, a dual-passband polarization conversion structure and a wave absorbing structure. The phase regulation and control structure is composed of two metal strips arranged along the y axis, a dielectric plate and a metal grating arranged along the y axis. The dual-passband polarization conversion structure is composed of a metal grating arranged along the y axis in the phase regulation and control structure, three metal strips inclined by 45 degrees, a metal grating arranged along the x axis and two layers of dielectric plates clamped between the metal gratings and the metal strips. The wave absorbing structure is composed of metal gratings arranged along the x axis in the dual-passband polarization conversion structure, two layers of ITO strip resistive films printed on a PET thin plate and two layers of dielectric plates. The antenna housing can realize high-efficiency transmission of x and y polarized waves at working frequency bands f1 and f2, and realizes RCS reduction stealth and wave-absorbing stealth functions for y polarized waves and x polarized waves incident along-z and + z axial directions.

Description

technical field [0001] The present application relates to the technical field of radomes, in particular, to a design method of asymmetric transmission double-sided image metamaterial double-passband stealth radome and asymmetric transmission double-sided image metamaterial double-passband stealth radome. Background technique [0002] The traditional radome can be used to protect the antenna from the damage of some harsh natural environments such as rain, snow and hail, provide a safer working environment for the antenna, improve the use efficiency of the equipment, and improve the working conditions of the operator. However, as a special strong scattering source, the antenna will generate a large scattering area during radar detection, which will destroy the stealth effect of weapons and equipment. [0003] With the emergence of metamaterials and the development of stealth technology, it has been found that the application of stealth metamaterials to the field of radomes can...

Claims

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Application Information

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IPC IPC(8): H01Q1/42H01Q3/30H01Q15/00H01Q15/24H01Q17/00
CPCH01Q1/42H01Q15/0086H01Q3/30H01Q15/242H01Q17/00
Inventor 许河秀王少杰王明照王朝辉王彦朝
Owner AIR FORCE UNIV PLA