Air chamber frequency selection surface structure

A frequency selective surface, air cavity technology, applied in electrical components, circuits, resonators, etc., can solve the problems of small frequency response curve slope, few controllable parameters, poor polarization stability, etc., to achieve rapid prototyping, wide application, The effect of improving performance

Inactive Publication Date: 2016-11-16
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] 2) The invention patent application with the Chinese patent application number 201510953990.5 discloses a frequency selective surface structure based on a three-dimensional structure, such as figure 2 As shown, it solves the problems that the

Method used

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  • Air chamber frequency selection surface structure
  • Air chamber frequency selection surface structure
  • Air chamber frequency selection surface structure

Examples

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Example Embodiment

[0035] Example 1:

[0036] Such as Figure 4 ~ Figure 6 As shown, the air cavity frequency selection surface structure of this embodiment is composed of M*N identical periodic units, and each periodic unit is a rectangular parallelepiped structure. The front and back sides of the rectangular parallelepiped structure have a groove line. Is the first slot line 1, and the opposite slot line is the second slot line 2. The first slot line 8 and the second slot line 9 are both rectangular slot lines with length L and width W. The middle of the rectangular parallelepiped structure It is an air cavity resonator 3. The inner and outer surfaces of the air cavity resonator 3 are surrounded by metal; among them, M>10, N>10, due to the large number of periodic units, only shown in the figure of this embodiment 2*2 cycle unit number.

[0037] The air cavity resonator 3 is made by 3D printing, so it can be quickly formed, and the processing is quite easy, and the accuracy is high; the metal is ...

Example Embodiment

[0045] Example 2:

[0046] The main features of this embodiment are: Picture 8 As shown, the air cavity frequency selection surface structure of this embodiment is used as a three-frequency air cavity frequency selection surface structure, and the first groove line 1 on the front side of the cuboid structure is along the positive X-axis direction relative to the geometric center point of the cuboid structure ( +X axis) offset distance S, and rotate to the right by angle θ relative to the Y axis; the second groove line 2 on the reverse surface of the cuboid structure is in the opposite direction of the X axis (-X axis) relative to the geometric center point of the cuboid structure The offset distance S and the right rotation angle θ relative to the Y axis, that is, the offset direction of the first slot line 1 and the second slot line 2 are opposite, and the rotation direction is the same. The rest is the same as in Example 1.

[0047] The electromagnetic simulation curve of the S...

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Abstract

The invention discloses an air chamber frequency selection surface structure which is formed by M*N same periodic cells, each periodic cell is a cuboid structure, each of front and back surfaces of the cuboid structure is provided with a groove line, a middle part of the cuboid structure is provided with an air chamber resonator, inner and outer surfaces of the air chamber resonator are surrounded with metal, and both of M and N are greater than 10. The air chamber frequency selection surface structure is characterized by simple structure, easy-to-process property and excellent performance. The air chamber frequency selection surface structure can be used either as a single frequency medium chamber frequency selection surface structure or as a three frequency medium chamber frequency selection surface structure; the air chamber frequency selection surface structure can be applied widely and relates to many aspects of the field of electromagnetics; in a microwave band, the air chamber frequency selection surface structure can be applied to an antenna housing, a multi-frequency reflecting surface antenna, a plane high gain antenna, an electromagnetic compatible absorber, a polarizer, a waveguide filter, artificial electromagnetic material and the like.

Description

technical field [0001] The invention relates to a frequency selective surface structure, in particular to an air cavity frequency selective surface structure, belonging to the technical field of frequency selective surfaces. Background technique [0002] Frequency Selective Surface (FSS) is an infinite planar structure composed of the same patch or aperture unit arranged in two-dimensional periodicity. It has frequency selection for electromagnetic waves with different operating frequencies, polarization states and incident angles. characteristic. According to the different frequency responses to electromagnetic waves, FSS can be roughly divided into two types: one is the metal patch type, and the other is the aperture type complementary to the patch type structure, that is, slotting on the metal plate (groove line) )Structure. When the FSS is in a resonant state, the incident electromagnetic wave undergoes total reflection (the unit is a patch type) or total transmission ...

Claims

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Application Information

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IPC IPC(8): H01P1/20H01P7/06
CPCH01P1/20H01P7/06H01P7/065
Inventor 王世伟邓飞
Owner SOUTH CHINA UNIV OF TECH
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