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2.5-dimensional closed loop type frequency selective surface structure and design method thereof

A frequency selective surface and design method technology, applied in the field of electromagnetic fields and microwaves, can solve the problems of not reaching ultra-wideband, achieve unique electrical properties, and reduce the effect of equivalent unit size

Active Publication Date: 2017-11-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, this technical solution still has not achieved ultra-wideband with a relative bandwidth of 100%, and there is still room for improvement in the degree of miniaturization

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  • 2.5-dimensional closed loop type frequency selective surface structure and design method thereof
  • 2.5-dimensional closed loop type frequency selective surface structure and design method thereof
  • 2.5-dimensional closed loop type frequency selective surface structure and design method thereof

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Embodiment Construction

[0035] 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.

[0036] refer to Figure 1 to Figure 2 As shown, a 2.5-dimensional closed-loop frequency selective surface structure of the present invention includes: a first metal patch layer 1, an intermediate dielectric layer 2, a second metal patch layer 3 and a plurality of metallized via holes 4, The first metal patch layer, the intermediate dielectric layer, and the second metal patch layer are sequentially pressed together, and the metallized via hole runs through the first metal patch layer, the intermediate dielectric layer, and the second metal patch layer ;like Figure 3 to Figure 8 As shown, the unit shape of the first metal patch layer is a rectangle, and the shape of the patch is a plurality...

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Abstract

The invention discloses a 2.5-dimensional closed loop type frequency selective surface structure and a design method thereof. The structure comprises a first metal patch layer, a middle medium layer, a second metal patch layer and multiple metal holes. The metal holes pass through the above first metal patch layer, the middle medium layer and the second metal patch layer. The structure and size of the first metal patch layer are the same with that of the second metal patch layer. A part of rounded strip patches of the first metal patch layer is around a unit center with intervals to form a hexagonal ring, the other part of rounded strip patches with intervals is around the hexagonal ring with a certain distance to form six half hexagonal rings, and half hexagonal rings of two first metal patch layer units are connected in pairs to form a complete hexagonal ring which is completely same with the hexagonal ring of the center. The frequency selective structure in the invention has an ultra-wide stop band characteristic, the equivalent cell size of a frequency selective surface is reduced, the structure is combined with most thick skins, shells and other structures, and the electrical performance of the structure is exerted.

Description

technical field [0001] The invention belongs to the field of electromagnetic field and microwave technology, and specifically refers to a miniaturized and tightly arranged 2.5-dimensional closed-loop ultra-wide stopband frequency selection surface structure 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. One of the key factors of stealth performance. Ord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0026H01Q15/0046Y02D30/70
Inventor 何小祥华博宇杨阳周春高瑾郑景明冒晨阳刘婷
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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