An Endfire Antenna Based on the Composite Structure of Surface Wave Guide and Metasurface 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: 2020-03-27
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Claims
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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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  • An Endfire Antenna Based on the Composite Structure of Surface Wave Guide and Metasurface Absorber
  • An Endfire Antenna Based on the Composite Structure of Surface Wave Guide and Metasurface Absorber
  • An Endfire Antenna Based on the Composite Structure of Surface Wave Guide and Metasurface 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 wave guide and a supersurface absorber, and relates to the technical field of microwave antennas. The structure of the endfire antenna is mainly composed of surface wave guide, excitation patch, reflector patch and metasurface absorber. The surface waveguide can not only conduct surface waves, but also exhibit the characteristics of a low-pass at low frequency and a band-pass at high frequency frequency-selective surface characteristics, so that it can suppress the back-to-single station RCS of the end-fire antenna in some frequency bands. The excitation patch and the reflector patch located above the surface waveguide can excite the surface wave in the surface waveguide to propagate along a certain direction and radiate electromagnetic energy due to discontinuity at the edge of the waveguide. In addition, the metasurface absorber can absorb electromagnetic wave absorption in some frequency bands, thereby suppressing the RCS of the endfire antenna in this frequency band. Combining the surface wave waveguide with the RCS suppression of the metasurface absorber, the endfire antenna can achieve good endfire performance and RCS suppression in the 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 Patents(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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