Offset-feed type microwave antenna

A microwave antenna and bias-feed technology, which is applied to antennas, electrical components and other directions, can solve the problems of difficulty and high cost in manufacturing large-scale CNC machine tools, and achieve the effects of convenient processing and production, low cost and small size

Active Publication Date: 2012-05-30
KUANG CHI INST OF ADVANCED TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

This method cuts very accurately, but it is difficult to manufacture such a large CNC machine tool, and the cost is relatively high

Method used

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  • Offset-feed type microwave antenna
  • Offset-feed type microwave antenna
  • Offset-feed type microwave antenna

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Embodiment Construction

[0034] Light, as a kind of electromagnetic wave, when it passes through glass, because the wavelength of light is much larger than the size of atoms, we can use the overall parameters of the glass, such as the refractive index, rather than the detailed parameters of the atoms that make up the glass to describe The response of glass to light. Correspondingly, when studying the response of materials to other electromagnetic waves, the response of any structure in the material whose scale is much smaller than the wavelength of the electromagnetic wave to electromagnetic waves can also be described by the overall parameters of the material, such as the dielectric constant ε and magnetic permeability μ. By designing the structure of each point of the material, the dielectric constant and magnetic permeability of each point of the material are the same or different, so that the overall dielectric constant and magnetic permeability of the material are arranged in a certain order, and ...

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Abstract

The invention discloses an offset-feed type microwave antenna which comprises a feed source, a first metamaterial panel and a reflection panel attached on the back of the first metamaterial panel, wherein an angle theta which is not equal to 180 DEG is formed between a connecting line of the feed source and the center point of the outer surface of the first metamaterial panel. Spherical electromagnetic waves sent by the feed source are refracted after passing through the first metamaterial panel and then reflected by the reflection panel and then refracted through the first metamaterial paneland transmitted in a form of planar electromagnetic waves. The offset-feed type microwave antenna is manufactured by adopting a metamaterial principle, so that the antenna is independent of limits ofa conventional convex lens shape, a conventional concave lens shape and a conventional paraboloid shape, can adopt a panel shape or any shape, and has the advantages of smaller thickness, smaller volume, more convenience for processing and manufacturing, low cost and good gain effect.

Description

technical field [0001] The invention relates to an antenna, in particular to a bias-feed microwave antenna made of metamaterials. Background technique [0002] A conventional microwave antenna is generally composed of a metal parabola and a feed source located at the focus of the metal parabola. The role of the metal parabola is to reflect external electromagnetic waves to the feed source or to reflect electromagnetic waves emitted by the feed source. The area of ​​the metal paraboloid and the machining accuracy of the metal paraboloid directly determine the parameters of the microwave antenna, such as gain and directivity. Because the installation position of the feed source of the existing offset-feed microwave antenna is not on a straight line perpendicular to the center section of the antenna and passing through the center of the antenna, the conventional offset-feed microwave antenna does not have the influence of the shadow of the feed source. However, the reflective ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q15/23H01Q19/06H01Q19/10
Inventor 刘若鹏季春霖岳玉涛杨青
Owner KUANG CHI INST OF ADVANCED TECH
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