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A low rcs antenna

An antenna and monopole antenna technology, which is 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 effect of easy conformality, obvious RCS reduction effect, and good RCS reduction effect

Active Publication Date: 2021-10-22
AIR FORCE UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

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

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Abstract

The invention discloses a low RCS antenna, comprising: an artificial surface plasmon coupling medium and a feeding structure, the feeding structure includes a monopole antenna and a grounding plate, and the monopole antenna is arranged on the grounding plate; an artificial surface, etc. The plasmon coupling medium is arranged on the ground plate; the artificial surface plasmon coupling medium includes a periodic metal unit array and a dielectric substrate, and the periodic metal unit array is arranged on the surface of the dielectric substrate. Therefore, the low RCS antenna provided by the embodiment of the present invention, by adjusting the strong-weak dispersion region in the artificial surface plasmon dispersion curve, makes the antenna in the weak dispersion region, and electromagnetic waves can be efficiently transmitted and radiated along the coupling medium; and in In the region of strong dispersion, electromagnetic waves are strongly absorbed. The antenna has a simple structure, is processed by printed circuit board technology, is low in cost, and is easy to conform to shape. Under the premise of ensuring efficient receiving / transmitting performance, the RCS reduction effect is obvious, and it has a good RCS reduction effect even in a large angle area.

Description

technical field [0001] The 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 the full-scale all-metal platform, but this is only the first step in stealth design. A real weapon platform relies on various antennas (communication and navigation, electronic support, identification friend or foe, etc.) on it to perform combat missions. Different antenna apertures must be set up on it. If any antenna aperture is not properly handled, it will affect the stealth performance of the whole machine. extremely adverse effects. Therefore, any stealth platform must invest a lot of energy in the stealth design of the antenna aperture, and the stealth design of the antenna aperture is an indispensable part of the design of the stealth platfo...

Claims

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Application Information

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Patent Type & Authority Patents(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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