Low-cost Luneberg lens antenna designed based on 3D printer

Abstract

The invention provides a low-cost Luneberg lens antenna designed based on a 3D printer, which mainly solves the problems of complicated structure and inconvenient processing in the prior art. The antenna comprises a hemispherical lens (1), a circular metal reflecting plate (2), a plastic bracket (3) and a Vivaldi feed source (4). The hemispherical lens is fixed on the upper surface of the circularmetal reflecting plate, and the spherical center coincides with the circular center of the reflecting plate. The Vivaldi feed source is fixed at the focal length position of the hemispherical lens. The hemispherical lens is a meshed filling structure composed of a spherical core (11) and two layers of hemispherical shells (12, 13), wherein a first layer of hemispherical shell is nested outside the spherical core, a second layer of hemispherical shell is nested outside the first layer of hemispherical shell, and the spherical core and the two layers of hemispherical shells have different equivalent dielectric constants and correspond to filling media with different filling rates. The antenna of the invention has the advantages of simple structure, low cost, high gain, convenient processingand manufacturing and good scanning beam consistency in the whole frequency band, and can be used in satellite communication, automobile anti-collision radar and microwave remote sensing.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a low-cost Luneberg lens antenna designed based on a 3D printer, which can be used for satellite communication, automobile anti-collision radar and microwave remote sensing. Background technique [0002] The Lunberg lens antenna has the advantages of high gain, multiple beams, wide scanning angle and low cost, and it consists of two parts: a lens and a feed. in: [0003] The lens is usually composed of concentric spherical cores with different thicknesses and different dielectric constants and N spherical shells, or a structure of concentric hemispherical cores with different thicknesses and different dielectric constants, N hemispherical shells and reflectors, and N is at least 1; [0004] The feed source adopts a horn-type aperture antenna or a microstrip patch antenna, and is placed at the focal length of the lens. Moving the position of the feed source on the le...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to propose a low-cost Lunberg lens antenna based on a 3D printer design to solve the problems of complex design process and high cost in the prior art due to the need to calculate the number, radius and arrangement of through holes , greatly shorten the product development cycle, improve productivity and reduce production costs

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