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Frequency selection surface with miniaturized low frequency number ratio

A frequency-selective surface and frequency-to-number ratio technology, applied to electrical components, antennas, etc., can solve the problems of low frequency-to-number ratio and high miniaturization, and achieve the effects of reducing resonance frequency, extending current path, and reducing unit size

Active Publication Date: 2019-01-11
XIDIAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the miniaturization degree of this structure is only 0.065 resonance wavelengths, and the characteristics of ensuring low frequency ratio and high miniaturization degree at the same time have not been realized.

Method used

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  • Frequency selection surface with miniaturized low frequency number ratio
  • Frequency selection surface with miniaturized low frequency number ratio
  • Frequency selection surface with miniaturized low frequency number ratio

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] refer to figure 1 , the low frequency number ratio miniaturization frequency selective surface of the present invention, comprises the frequency selective surface unit of M*N periodic arrangement, this example takes M=10, N=10, and the structure of each frequency selective surface unit is as figure 2 shown.

[0027] refer to figure 2 , the frequency selective surface unit includes a dielectric plate 2, an upper metal patch 1, a lower metal patch 3, a metal through hole 4 and a metal connecting line 5 connecting adjacent units; the upper metal patch 1 and the lower metal patch 3 are printed respectively Made on the upper surface and the lower surface of the dielectric board 2, each metal patch is composed of four metal strips arranged on the surface of the dielectric board 2; mm ~ 3.5mm, a square plate with a dielectric con...

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Abstract

The invention provides a frequency selection surface with miniaturized low frequency number ratio, which mainly solves the technical problems that two resonant frequency points in low frequency band are far away from each other and the electric size of a unit is large on the existing dual-band frequency selection surface. The frequency selection surface comprises a dielectric plate (2),a metal patch (1) printed on an upper surface of the dielectric board and a metal patch (3) printed on a lower surface of the dielectric board,a metal through hole (4) and a metal connecting wire (5) connectingadjacent units, Each metal patch consists of four metal strips arranged on the surface of the dielectric plate. The first two metal strips form two resonant points of TE polarization and the second two metal strips form two resonant points of TM polarization. The four metal strips of the upper and lower metal patches are connected through metal vias to prolong the current path. The invention realizes good miniaturization effect while possessing low-frequency digital ratio characteristics, and can maintain stable performance for different polarization and angles, and can be applied to antenna sub-reflector of communication system and small communication equipment.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic fields and microwaves, in particular to a frequency selective surface with low frequency ratio and miniaturization, which can be used for antenna secondary reflection surfaces of communication systems and small communication equipment. Background technique [0002] The frequency selective surface is a two-dimensional periodic array structure, which is composed of a large number of passive resonant units. It behaves as a spatial filter in essence. It interacts with electromagnetic waves near the resonant frequency of the unit, showing total reflection or total transmission characteristics. , this characteristic is called frequency selective characteristic. Frequency selective surfaces are generally divided into two categories, one is a metal patch, and the other is a complementary slot structure. Usually, the patch type frequency selective surface has band-stop filtering characteristics, wh...

Claims

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Application Information

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IPC IPC(8): H01Q15/00H01Q15/24
CPCH01Q15/0013H01Q15/24
Inventor 洪涛王梦丹彭可姜文刘英龚书喜
Owner XIDIAN UNIV
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