Filter of thick screen frequency selective surface with frequency conversion function

A technology of frequency selective surface and filter, which is applied in the field of radar detection to achieve the effect of high cost and easy fabrication

Inactive Publication Date: 2012-10-03
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Therefore, there are many deficiencies in the existing frequency sele

Method used

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  • Filter of thick screen frequency selective surface with frequency conversion function
  • Filter of thick screen frequency selective surface with frequency conversion function
  • Filter of thick screen frequency selective surface with frequency conversion function

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Embodiment Construction

[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0014] Such as figure 1 and figure 2 As shown, a filter with a thick screen frequency selective surface with frequency conversion function, the filter includes: a dielectric plate 1, a conductive metal plate 2 and a hole unit 3, the filter also includes: a photosensitive material 4; a conductive metal plate 2 Fixed on the dielectric plate 1 , the hole units 3 are evenly distributed on the surface of the conductive metal plate 2 , and the photosensitive material 4 is filled in the middle of each hole unit 3 .

[0015] In this embodiment, the hole unit 3 is a circular hole, and the photosensitive material 4 is a rectangle, wherein the length of the rectangle is about λ / 2, and the width is about λ / 4, where λ is the wavelength of the incident electromagnetic wave. The photosensitive material 4 is an independent component made of semiconductor m...

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Abstract

The invention discloses a filter of a thick screen frequency selective surface with a frequency conversion function, which relates to the field of radar detection and aims at further increasing the performance and the reliability of a stealth technology. The filter comprises a dielectric slab, an electric conduction metal plate, hole units and photosensitive materials, wherein the electric conduction metal plate is fixedly arranged on the dielectric slab, the hole units are uniformly distributed on the surface of the electric conduction metal plate, and the photosensitive materials are arranged at the middle part of each hole unit. According to the filter disclosed by the invention, a passing band and a stop band are provided for the frequency selective surface, the change of the passing band and the stop band can be adjusted through changing the illumination intensity of a light source, and thus the frequency selective surface has a variable transmission performance; and simultaneously, the device is easy to manufacture, and the cost is not so expensive.

Description

technical field [0001] The invention belongs to the field of radar detection, in particular to a filter with a frequency conversion function and a thick-screen frequency selection surface. Background technique [0002] The essence of modern military warfare is high-tech electronic countermeasures, in which radar detection and radar cross section of targets involved in stealth technology are more prominent. Stealth technology, as an effective means to improve the survival, penetration and strike capabilities of weapon systems, has become an effective penetration technology in modern military warfare integrating land, sea and air. The radome with frequency selective surface technology can effectively reduce the radar cross section and realize the stealth of radar detection. [0003] Frequency selective surfaces also have a wide range of applications in the microwave, infrared and visible light bands, such as in satellite and radar multi-frequency antennas. The S / Ku dual-freq...

Claims

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Application Information

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IPC IPC(8): H01P1/20
Inventor 方春易高劲松冯晓国王延松孙连春
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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