Broad band cylindrical lens antenna based on artificial electromagnetic materials

A technology of artificial electromagnetic materials and cylindrical lenses, applied in antennas, electrical components, etc., can solve the problems of heavy weight, high cost, and difficult production, and achieve the effects of light weight, easy processing, and improved gain and orientation

Active Publication Date: 2009-11-25
SOUTHEAST UNIV
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Problems solved by technology

The present invention proposes the application of new artificial electromagnetic materials to manufacture broadband cylindrical lens antennas similar to Luneberg lenses, and overcomes t...

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  • Broad band cylindrical lens antenna based on artificial electromagnetic materials
  • Broad band cylindrical lens antenna based on artificial electromagnetic materials
  • Broad band cylindrical lens antenna based on artificial electromagnetic materials

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Embodiment Construction

[0015] In the present invention, the broadband cylindrical lens antenna based on the novel artificial electromagnetic material is realized by an equivalent artificial medium formed by a series of non-resonant basic units arranged according to certain rules, and the whole antenna includes a cylindrical lens 2 based on the novel artificial electromagnetic material 1 , as the feed source 3 for excitation, and the reflector 4 for suppressing backward radiation. The novel artificial electromagnetic material 1 and its structural unit 6 are the core of the present invention. The artificial medium with different equivalent parameters can be obtained by adjusting the size of the basic unit 6 in the new artificial electromagnetic material, so as to design the parameter distribution required by the lens antenna. The feed is fed with a point source as the excitation for the antenna. The function of the transmitter is to suppress the backward radiation generated by the feed source and imp...

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Abstract

Broad band cylindrical lens antenna based on novel artificial electromagnetic materials is formed by arranging a series of novel artificial electromagnetic materials in definite regulation, composing equivalent artificial medium with gradient refractive index. The novel lens antenna includes a cylindrical lens 2 based on novel artificial electromagnetic material 1, feed source 3 used as excitation, reflector 4 for repressing backward radiation. Specific structure 5 of one printed circuit board in the novel artificial electromagnetic material 1 is a series of 'I' shaped units 6 printed on medium substrate arranged according to specific regulation. Regulating size of the 'I' shaped structure to obtain the lens needed refractive index distribution. Selecting suitable and ideal reflector 4 and disposing it back of the feed source 3 for reducing backward radiation generated by the feed source, so as to improve gain and directivity of the antenna. The invention is provided with advantages of high gain, broadband, high directivity, easy manufacture, low cost, light weight and convenient integration.

Description

technical field [0001] The invention relates to a wide-band cylindrical lens antenna based on artificial electromagnetic materials, in particular to a new type of artificial medium whose equivalent refractive index distribution varies with space. By designing different basic artificial unit structures, the refractive index distribution can be changed from 1 to The variable broadband high-gain cylindrical lens is used to realize the application of mobile station to satellite tracking and other aspects. Background technique [0002] As a new type of artificial electromagnetic material, Metamaterials has the biggest characteristic that it can theoretically achieve arbitrary equivalent permittivity and magnetic permeability with artificial structures. In 2006, the David Smith research group of Duke University in the United States successfully applied the new artificial electromagnetic material experiment to verify the theory of the stealth coat for the first time (D.Schurig, et...

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Application Information

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IPC IPC(8): H01Q15/00H01Q15/23
Inventor 崔铁军马慧锋陈曦杨歆汨徐弘升程强
Owner SOUTHEAST UNIV
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