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Miniaturized passive flexible band-pass frequency selective surface for antenna housing

A frequency-selective surface, passive and flexible technology, applied to antennas, antenna components, radiating unit covers, etc., can solve problems such as performance disasters, and achieve the effects of low loss, good transmission performance, and low price

Active Publication Date: 2020-11-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to Munk's theory, frequency-selective surface elements of regular size at large angles of incidence can be a disaster in terms of performance

Method used

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  • Miniaturized passive flexible band-pass frequency selective surface for antenna housing
  • Miniaturized passive flexible band-pass frequency selective surface for antenna housing
  • Miniaturized passive flexible band-pass frequency selective surface for antenna housing

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0030] This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.

[0031] Such as figure 1 , figure 2 As shown, the present invention discloses a miniaturized passive flexible bandpass frequency selective surface for a radome, comprising an upper metal periodic array and a lower substrate;

[0032] The metal periodic array includes several metal units arranged in a periodic arrangement;

[0033] The metal unit is square and includes four bending lines;

[0034] The bending lines include first to fourth L-shaped lines, first to third connecting li...

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Abstract

The invention discloses a miniaturized passive flexible band-pass frequency selective surface for an antenna housing. The miniaturized passive flexible band-pass frequency selective surface comprisesan upper-layer metal periodic array and a lower-layer substrate, the metal periodic array comprises a plurality of metal units which are periodically arranged and distributed; the metal unit comprisesfour bending lines which are symmetrical about the center. According to the invention, the miniaturized frequency selective surface is combined with the ultrathin substrate; manufacturing is easy, the frequency selective surface can be attached to the surface of the complex curved surface radome, the electromagnetic performance of in-band wave transmission and out-of-band stealth is achieved by reducing the unit size of the upper layer metal periodic array and shortening the array period, good angle stability and wave transmission performance are achieved, and important application prospectsare achieved.

Description

technical field [0001] The invention relates to the field of microwave filtering technology and the field of stealth technology, in particular to a miniaturized passive flexible band-pass frequency selective surface for a radome. Background technique [0002] A frequency selective surface is a periodic array of aligned metal flakes or small holes that act as a spatial filter. Frequency selective surfaces are widely used in many fields due to their bandpass or bandstop characteristics, such as radomes, multi-frequency reflector antennas, polarizers, absorbing materials, planar high-gain antennas, artificial electromagnetic materials, etc. [0003] Theoretically, the size of the number of frequency selective surfaces should be infinite, whereas in practice, frequency selective surfaces usually have a finite size. By using miniaturization techniques, a sufficient number of elements can be obtained in a limited area, which allows a finite array of frequency-selective surfaces t...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/42
CPCH01Q1/38H01Q1/427
Inventor 曹帅曹群生梁晋玮吴东辉
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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