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Radiation and scattering integrated broadband antenna

A radiation scattering, broadband antenna technology, applied to antennas, antenna arrays, antenna grounding devices, etc., can solve the problem of in-band RCS reduction of broadband antennas, and achieve uniform phase changes, easy conformality, and stable antenna patterns.

Active Publication Date: 2022-08-02
AIR FORCE UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An embodiment of the present invention provides a broadband antenna with integrated radiation and scattering, which can solve the problem of in-band RCS reduction in the broadband antenna in the prior art

Method used

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  • Radiation and scattering integrated broadband antenna
  • Radiation and scattering integrated broadband antenna

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Embodiment

[0047] Described below in conjunction with the accompanying drawings

[0048] like figure 2 (a) is a schematic diagram of the four-arc structure, and the red and blue joints in (b) represent the surface current paths under left-handed and right-handed incidence, respectively.

[0049] like image 3 Shown is the influence law of the phase amplitude of the four-circular arc structure with the arc variation under circularly polarized and linearly polarized incidence, (a) with θ1 under left-handed incidence; (b) with θ2 under right-handed incidence Variation; (c) Variation with θ (θ1=θ2=θ) under y-polarized incidence. When the arc changes synchronously, the phase regulation of linear polarization can be realized, covering 2π.

[0050] like Figure 4As shown, it is a schematic diagram of the structure of the antenna, the size of the antenna is 15×15×4.4mm3, and it works in the X-band. The low RCS broadband antenna unit includes a metal structure, a dielectric plate, and a gro...

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Abstract

The invention discloses a radiation and scattering integrated broadband antenna, and relates to the technical field of antennas, and the antenna comprises a metal structure which covers the upper surface of a dielectric plate; the antenna comprises two 3-shaped arc structures with opposite openings, a linear radiation structure and an L-shaped feed structure, the linear radiation structure is arranged on the upper surface of a dielectric plate located between the two 3-shaped arc structures, the L-shaped feed structure is arranged on the upper surface of the dielectric plate close to a concave cavity of one 3-shaped arc structure, and the grounding plate covers the lower surface of the dielectric plate and is arranged on the upper surface of the dielectric plate close to the concave cavity of the other 3-shaped arc structure. And the linear radiation structure is coupled with the L-shaped feed structure to provide radiation electromagnetic waves, is connected with the L-shaped feed structure through a coaxial port of antenna feed, and is coupled to the 3-shaped arc structure. The device is manufactured by adopting a printed circuit board technology, has a planar structure and a sub-wavelength thickness, is easy to conform and low in manufacturing cost, and has broadband stable radiation performance and broadband in-band RCS (Radar Cross-Section) reduction performance.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a broadband antenna with integrated radiation and scattering. Background technique [0002] Stealth is an inevitable trend in the development of modern and future combat equipment, and it is an important support for ensuring the battlefield survivability of combat equipment and performing combat missions. Taking stealth aircraft as an example, the design of stealth aircraft is first of all stealth shape design. The stealth shape is determined through radar cross section (RCS) simulation and testing of a full-size smooth surface all-metal platform, but shape design is only the first step of stealth design. For a real stealth fighter to carry out its combat mission, it must rely on various antennas (communication and navigation, electronic support, identification of friend and foe, fire control, etc.) carried on it, which requires a sunken antenna aperture on the fuselage. And st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q3/30H01Q3/44H01Q21/00
CPCH01Q1/38H01Q1/50H01Q1/48H01Q3/30H01Q3/44H01Q21/0006Y02A90/10
Inventor 王甲富杨杰富新民韩亚娟陈红雅随赛屈绍波
Owner AIR FORCE UNIV PLA
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