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Radar antenna

A radar antenna, plane technology, applied in the direction of antenna, electrical components, etc., can solve the problems of complex production process of parabolic antenna, and achieve the effect of eliminating complex manufacturing process and simple structure

Active Publication Date: 2015-04-22
KUANG CHI INST OF ADVANCED TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to propose a radar antenna with a simple structure in view of the complex production process of the parabolic antenna in the prior art.

Method used

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Embodiment Construction

[0035] This embodiment utilizes the converging characteristics of the planar metamaterial panel that can converge electromagnetic waves, and replaces the current parabolic reflector with a planar reflector, which solves the problem of complex production process of the radar antenna parabolic reflector, and has the original parabolic reflector antenna that can be oriented Advantages of receiving or transmitting electromagnetic waves.

[0036] The converging properties of the metamaterials used in this example are as follows figure 2 As shown, when the electromagnetic wave is emitted from the emission source 6, it becomes a plane wave after being refracted by the planar metamaterial panel 7. , the electromagnetic wave will converge on the emission source 6.

[0037] Planar reflectors made of this metamaterial such as image 3 As shown, it includes a planar reflective surface 5 and a planar metamaterial panel 4 attached to the planar reflective surface 5. The planar reflective...

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Abstract

The invention relates to a radar antenna which comprises a reflector and a feed source located on the focus of the reflector. The reflector is a plane reflector which comprises a plane reflection surface and a plane metamaterial panel which is attached onto the plane reflection surface and has the converging function. The feed source is located on the focus of the plane metamaterial panel. The plane metamaterial panel and the plane reflection surface replace the traditional parabolic reflection surface, electromagnetic wave directional reception or emission is achieved, and the complex manufacture process for processing the traditional paraboloid radar antenna is omitted by adopting the plane structure.

Description

technical field [0001] The invention relates to the field of radar antennas, and more specifically, to a radar antenna using metamaterials. Background technique [0002] The radar antenna converts the spherical wave radiated by the feed source into a plane wave through the reflector, so as to realize directional reception or emission of electromagnetic waves. The reflector currently used is in the shape of a parabola, and the feed source is located near the focus of the reflector. [0003] The working principle of the radar antenna is similar to that of an optical mirror. The existing radar parabolic antenna is as figure 1 As shown, it includes a collapsible source 1, a parabolic reflector 2 and a bracket 3. A feed 1 for transmitting or receiving electromagnetic waves is placed at the focus of the parabolic reflector 2. Using the focusing characteristics of the parabolic reflector 2, the The spherical wave is reflected by the parabolic reflector 2 and converted into a plane...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q19/185H01Q15/14
Inventor 刘若鹏石小红徐冠雄张洋洋
Owner KUANG CHI INST OF ADVANCED TECH