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Dual-frequency millimeter wave frequency selective surface

A frequency-selective surface and millimeter-wave technology, applied in waveguide devices, electrical components, circuits, etc., can solve problems affecting the application range, etc., and achieve the effect of simple single-layer metal structure, wide operating frequency band, and easy processing

Active Publication Date: 2014-12-31
NAT SPACE SCI CENT CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Most of the frequency selection surfaces in the prior art have only one working frequency range, which affects its application range

Method used

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  • Dual-frequency millimeter wave frequency selective surface
  • Dual-frequency millimeter wave frequency selective surface
  • Dual-frequency millimeter wave frequency selective surface

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Embodiment Construction

[0035] The present invention will be further described now in conjunction with accompanying drawing.

[0036] The dual-frequency millimeter-wave frequency selective surface of the present invention includes a plurality of periodic units, and each periodic unit has the same structure. The structure of the periodic unit is first described below.

[0037] figure 1 It is the top view of the periodic unit of the frequency selective surface of the present invention, as can be seen from the figure, the periodic unit is a flat cuboid, its length is between 3550-3650um, its width is between 1650-1750um, and its thickness Between 450-550um. As a preferred implementation manner, in this embodiment, the length of the periodic unit is 3600um, the width is 1700um, and the height is 500um. The periodic unit is made of metal material, and in this embodiment, the metal material is copper.

[0038] A dipole is arranged at the center of the periodic unit. The dipole is a through hole, formi...

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PUM

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Abstract

The invention relates to a dual-frequency millimeter wave frequency selective surface. Working bands of the frequency selective surface are 50 to 58GHz and 85 to 93GHz, and corresponding center frequencies are 54GHz and 89GHz respectively. The frequency selective surface comprises a plurality of lines. Periodical units in each line are arranged in a 90-degree arrangement way. The periodical units are flat plate-shaped cuboids, are 3,550 to 3,650um long, 1,650 to 1,750um wide and 450 to 550um thick, and are made of a metal material. Dipoles are arranged at the central positions of the periodical units, and are irregular gap structures. Each gap structure comprises a first region, a second region, a third region, a fourth region, a fifth region and a sixth region. The third regions and the extended parts of the third regions in the first regions form seventh regions.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a dual-frequency millimeter wave frequency selective surface. Background technique [0002] Frequency Selective Surfaces (FSS) is a two-dimensional periodic structure with frequency selective properties. As a new type of spatial filter, each periodic unit of FSS is equivalent to a passive resonator, and all these passive resonators are periodically arranged together in a certain way to form a filter capable of filtering electromagnetic waves. Because FSS has more advantages than traditional filters in the millimeter wave and submillimeter wave bands, it is widely used in military and civilian fields, and FSS has become a research hotspot in recent years. [0003] With the advancement of microwave remote sensing technology, millimeter-wave and submillimeter-wave spaceborne detection systems have become a mainstream trend, and their operating frequency is developing in the di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/20
Inventor 夏步刚张德海赵瑾孟进
Owner NAT SPACE SCI CENT CAS
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