High-gain wide-angle scanning multi-beam well lid antenna based on Luneberg lens

Abstract

The invention discloses a high-gain wide-angle scanning multi-beam well lid antenna based on a Luneberg lens. The basic structure comprises a spherical Luneberg Lens antenna processed by a 3D printing technology, four spherical arrays formed by 4 * 4 vertical dipole antenna feed sources, an ABS support frame for fixing the feed sources, a glass fiber reinforced plastic well cover (three layers), an ABS upper cover, an ABS lower cover, a steel frame, a steel bottom plate, a glass fiber reinforced plastic lower side plate, a well seat and a ball support block, The miniaturized vertical dipole feed source reduces the shielding effect of the feed source on the aperture of the antenna as much as possible, the vertical dipole is fixed on the ABS support frame, the ABS upper cover and the ABS lower cover play a role in protecting the Luneberg lens antenna, and the three layers of glass fiber reinforced plastic well covers are designed according to the propagation theory of electromagnetic waves in layered media, so that the maximum transmission coefficient of the three layers of glass fiber reinforced plastic well covers is ensured. The manhole cover antenna designed by utilizing the scheme realizes high-strength design, has the advantages of concealment, wide-angle scanning, high gain and simultaneous multi-beam directional communication, and is very suitable for being applied to 5G communication.

Description

technical field [0001] The invention relates to a manhole cover antenna belonging to the technical field of antenna engineering, specifically a Luneberg lens-based high-gain wide-angle scanning multi-beam manhole cover antenna for 5G communication. The cost of the antenna is low and no T / R is required. The components can realize wide-angle scanning, and can generate multiple beams at the same time, and has the advantages of concealment and high gain. Background technique [0002] The manhole cover antenna is a new type of antenna that buries the antenna underground. In view of the current 5G communication defects such as high power consumption, the electrical performance requirements of the manhole cover antenna itself are getting higher and higher. As far as the inventor knows, the existing manhole cover antenna There are disadvantages such as low gain and small scanning angle, which cannot meet the requirements of the existing 5G communication for high gain and wide-angle ...

AI Technical Summary

Problems solved by technology

The lens antenna is composed of cylindrical holes of different sizes drilled according to a certain distribution law in the inorganic material of the shape of orange petals. From the surface of the sphere to the center of the sphere, the radius of the cylindrical holes and the density of the holes gradually decrease, thereby realizing the dielectric constant. Gradient change, and finally the orange petal shape is combined into a sphere. The post holes processed by this technology are complicated, and the sizes of the post holes are not the same. Many processing components are required, and the fixation is difficult and the cost is high.

In the patent US 6433936B1 named "Lens of Gradient DielectricConstant and Methods of Production", Michael.P.Carpenter etc. filled the thermoplastic resin expansion beads with ceramic materials into the mold, and heated them to fuse them together. By adjusting the ceramic The dielectric constant of each layer of the spherical shell is controlled by the content and the density of the foam molding. The lens is light in weight and can ensure better practicability, but the process is relatively complicated and not suitable for mass production.

Cui Tiejun from Southeast University and others published a paper titled "Broadband planar Luneburg lens based on complementary metamaterials" on Applied Physics Letters, using electromagnetic metamaterials to design a Luneburg lens antenna working in the Ku band, but the aperture efficiency of the antenna is relatively low. Low

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