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Miniature low-profile ultra-wide passband frequency selective surface and design method thereof

A frequency-selective surface and design method technology, applied in the field of electromagnetic field and microwave, can solve the problems of high section thickness, large application range, etc., and achieve the effect of reducing the overall thickness and high practical value

Active Publication Date: 2017-08-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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  • Application Information

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Problems solved by technology

However, this technical solution still has the problem of high profile and large thickness. Although the number of layers is only three, the total thickness still reaches 6.1mm, which greatly affects the application range.

Method used

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  • Miniature low-profile ultra-wide passband frequency selective surface and design method thereof
  • Miniature low-profile ultra-wide passband frequency selective surface and design method thereof
  • Miniature low-profile ultra-wide passband frequency selective surface and design method thereof

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Embodiment Construction

[0039] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

[0040] refer to Figure 1 to Figure 6 As shown, a miniaturized low-profile ultra-wide passband frequency selective surface of the present invention is composed of three layers, namely: the first metal patch layer 1, the intermediate dielectric layer 2 and the second metal patch layer 3, The three are pressed together in sequence. The unit of the first metal patch layer 1 is a rectangle with the same length and width. The four corners of the rectangle are respectively provided with a quarter square ring with an opening outward, and a complete rectangle is provided in the center of the unit. The ring, after the plane period is extended, presents a staggered array of square rings; the second me...

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Abstract

The invention discloses a miniature low-profile ultra-wide passband frequency selective surface and a design method thereof. The miniature low-profile ultra-wide passband frequency selective surface comprises a first metal patch layer, an intermediate layer and a second metal patch layer, wherein the first metal patch layer, the intermediate layer and the second metal patch layer are laminated together in sequence, units of the first metal patch layer are rectangles with the same length and width, four corners of each rectangle are each provided with a 1 / 4 square ring with an outward opening, the center of each unit is provided with a complete rectangular ring, and a square ring array arranged in a staggered manner is presented after planar periodic extension; and units of the second metal patch layer are rectangles of the same size as that of the first metal patch layer, the center of each rectangle is provided with cross-shaped metal lines, and midpoint positions of the sides of each unit are provided with rectangular metal patches connected with the cross-shaped metal lines. The frequency selective structure has the advantage of ultra-wide passband, and the overall thickness of the frequency selective structure is greatly reduced. The frequency selective structure has very low profile, and can be combined with skins, outer shells, protective covers and the like with most of thicknesses freely, so as to give play to its unique electrical performance.

Description

technical field [0001] The invention belongs to the field of electromagnetic field and microwave technology, and specifically refers to a miniaturized low-profile ultra-wide passband frequency selective surface and a design method thereof. Background technique [0002] Modern warfare has entered the information age, and the target information detected by radar determines the fate of the target. The radar antenna system on the aircraft is an important source of scattering, and has a high radar cross section (RCS) in certain frequency and viewing angle ranges. Reducing the RCS of the antenna system is an important issue for the aircraft to achieve stealth. The traditional aircraft dielectric radome is "transparent" in the whole frequency band and has no stealth effect. Therefore, the design of the wave-transparent / stealth multifunctional integrated radome is extremely important. For example, how to reduce the backscatter of the radar antenna on the head of the aircraft has bec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0013H01Q15/0053Y02D30/70
Inventor 华博宇何小祥杨阳
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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