Broad band cylindrical lens antenna based on artificial electromagnetic materials

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...

AI Technical Summary

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 the high cost, heavy weight and manufacturing difficulties of traditional Luneburg lens antennas under the premise of ensuring high gain and high directivity. Disadvantages such as difficulty

Images