End-fire antenna based on composite structure of surface waveguide and supersurface absorber

A composite structure, end-fired antenna technology, applied in the direction of the antenna, antenna, radiation element structure and other directions suitable for movable objects, can solve the problem that the antenna RCS suppression bandwidth is not wide enough, and achieve good radiation gain and front-to-back ratio characteristics Effect

Active Publication Date: 2018-01-19
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the bandwidth of antenna RCS suppression is not wide enough

Method used

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  • End-fire antenna based on composite structure of surface waveguide and supersurface absorber
  • End-fire antenna based on composite structure of surface waveguide and supersurface absorber
  • End-fire antenna based on composite structure of surface waveguide and supersurface absorber

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] This specific embodiment provides an end-fire antenna based on a composite structure of a surface wave guide and a metasurface absorber, the side view of which is shown in figure 1 As shown, the back-facing single-station RCS reduction in the ultra-wide frequency band can be realized while ensuring the good radiation performance of the slot antenna, including the metasurface absorber part, the radiating patch antenna part, the surface wave guide part and the feed part; The metasurface absorber part includes periodically arranged resistance-loaded square ring units and an upper dielectric substrate 1; each resistance-loaded square ring unit includes square ring patches 2 and four loading resistors 3; the radiation patch antenna part It includes a strip-shaped radiation patch 4 and three parasitic strip-shaped reflector patches 5; the stri...

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Abstract

The invention discloses an end-fire antenna based on a composite structure of a surface waveguide and a supersurface absorber and relates to the technical field of microwave antennas. The structure ofthe end-fire antenna mainly comprises the surface waveguide, an excitation patch, a reflector patch, the supersurface absorber and the like. The surface waveguide can conduct a surface wave and can show the frequency selective surface characteristics of being low-pass at a low frequency and band-pass at a high frequency, thereby inhibiting back monostatic RCS of the end-fire antenna in one part of bands. The excitation patch and the reflector patch at the upper part of the surface waveguide can excite propagation of the surface wave in the surface waveguide along one direction and radiate electromagnetic energy on the edge of the waveguide due to the discontinuity. In addition, the supersurface absorber can absorb electromagnetic waves on one part of bands, thereby inhibiting RCS of the end-fire antenna on the bands. RCS inhibition of the surface waveguide is combined with that of the supersurface absorber, so that the end-fire antenna can achieve good end-fire performance and the RCSinhibition function within an ultra-wideband range.

Description

technical field [0001] The invention belongs to the technical field of microwave antennas, in particular to an end-fire antenna based on a composite structure of a surface wave guide and a supersurface absorber. Background technique [0002] In recent years, with the development of detection and stealth technology, the radar cross-section (RCS) of panel antennas has received more and more attention. The panel antenna is a very special scatterer, and it is often difficult to balance its radiation characteristics and low RCS characteristics at the same time. In practical applications, the lumped / distributed element loading technology and the use of radar absorbing materials are the most common methods to reduce the RCS of the antenna. Their working mechanism is to convert microwave radio frequency energy into heat. However, the disadvantage of these two methods is that they have Deterioration of antenna radiation performance. In recent years, electromagnetic bandgap (EBG) st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/27H01Q1/38H01Q1/50H01Q15/00H01Q17/00H01Q19/185
Inventor 程友峰邵维丁霄金富隆
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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