A low-RCS antenna

An antenna and monopole antenna technology, applied in the direction of antenna, antenna grounding device, antenna grounding switch structure connection, etc., can solve the problem of reducing the antenna, etc., and achieve the effects of easy conformality, high-efficiency receiving/transmitting performance, and simple structure

Active Publication Date: 2018-12-18
AIR FORCE UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a low RCS antenna, which solves the problem in the prior art that an additional absorbing / scattering structure is required to reduce the RCS of the antenna

Method used

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Embodiment Construction

[0017] The following provides a clear and complete description of the technical solutions of the embodiments of the present invention with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0018] It should be understood that artificial surface plasmons (Spoof Surface Plasmon Polaritons, SSPP) are highly localized surface electromagnetic modes generated by the coupling of electromagnetic waves and electronic oscillations in artificial electromagnetic media. The wavelength λsspp is much smaller than the wavelength λ of free space electromagnetic waves. 0 It has the characteristics of short wavelength and strong dispersion, which can realize the adj...

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Abstract

The invention discloses a low-RCS antenna, which comprises an artificial surface plasmon coupling medium and a feeding structure, the feeding structure comprises a monopole antenna and a ground plane,and the monopole antenna is arranged on the ground plane; the artificial surface plasmon coupling medium is arranged on the ground plane; and the artificial surface plasmon coupling medium comprisesa periodic metal cell array and a dielectric substrate, and the periodic metal cell array is arranged on the surface of the dielectric substrate. Thus, the low-RCS antenna provide by the embodiment ofthe present invention adjusts and controls the strong-weak dispersion region in the artificial surface plasmon dispersion curve, so that when the antenna is in the weak dispersion region, electromagnetic waves can be efficiently transmitted and radiated along the coupling medium; and when the antenna is in the strong dispersion region, the electromagnetic waves are strongly absorbed. The antennais simple in structure, adopts a printed circuit board technology to process, and is low in cost and easy to be conformal, and on the premise of ensuring the efficient receiving/transmitting performance, an RCS reduction effect is obvious, and a good RCS reduction effect is achieved even in a relatively large angular domain.

Description

Technical field [0001] The present invention relates to the technical field of antennas, in particular to a low RCS antenna. Background technique [0002] Stealth is an inevitable trend in the development of modern and future weapon platforms. Stealth platform design generally first determines the stealth shape through the RCS test of a full-size all-metal platform, but this is only the first step in stealth design. The combat mission of the real weapon platform depends on the various antennas on it (communication navigation, electronic support, identification of friend or foe, etc.), and different antenna apertures must be set up on it. Any mishandling of the antenna aperture will bring about the stealth performance of the whole machine. Extremely adverse effects. Therefore, any stealth platform must put a lot of effort into the antenna aperture stealth design, and the antenna aperture stealth design is an indispensable part of the stealth platform design. At present, antenna...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/50H01Q1/48H01Q15/00H01Q17/00
CPCH01Q1/48H01Q1/50H01Q15/0013H01Q17/00
Inventor 王甲富韩亚娟张介秋屈绍波李勇峰庞永强
Owner AIR FORCE UNIV PLA
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