Production method of Luneberg lens

Abstract

The invention provides a novel production method of a Luneberg lens. A high-performance Luneberg lens with stable indicators can be manufactured under the conditions of room temperature, normal pressure and low cost. The production method comprises the following steps: a half shell is prepared as a lens half shell, an adhesive is sprayed on the inner wall surface of the lens half shell, the prefabricated first granular material is laid into the lens half shell, the first granular material is pressed by a punch to form a first dielectric layer, the adhesive is sprayed on the surface of the first dielectric layer, the second granular material is laid on the surface of the first dielectric layer and pressed and the like so that a half Luneberg lens is obtained, and then the two half Luneberglenses are bonded together to form a single Luneberg lens. The production method of the Luneberg lens has the advantages of simple production process, low production cost, low weight, easy control oflens characteristics and excellent lens performance indicators and the like.

Description

technical field [0001] The invention relates to the field of communication equipment production, more specifically, to a production method of a Lunberg lens. Background technique [0002] Luneberg lens technology, proposed by RK Luneberg in 1944 based on geometric optics, is used as an antenna and scatterer, mainly used in fast scanning systems, satellite communication systems, automotive anti-collision radars, and radar reflectors. [0003] Theoretically, the dielectric constant of the dielectric material used for Lunberg lenses should change continuously from 2 to 1 following certain mathematical laws from the center of the sphere to the outer diameter. However, such an ideal medium does not exist in nature, so in actual design, discrete spherical shells with layered design are often used instead. [0004] In order to make the actual performance of Lunberg lens close to the theoretical performance, there are already a variety of Lunberg lens production schemes, such as: ...

AI Technical Summary

Problems solved by technology

[0010] The above technical solutions include: the method of drilling, the dielectric constant of the material is controlled by the proportion of the material volume occupied by the hole, but the drilling density and precision of this method are not easy to control, the structure is complicated, the manufacturing difficulty is high, and the weight is not suitable. mass production

[0011] It also includes a method of layer-by-layer foaming, based on the middle core, wrapping layer by layer and foaming layer by layer. This is currently the most commonly used method to obtain foam materials with stepped dielectric constants, but whether it is physical foaming, Whether it is chemical foaming, it is necessary to strictly control the temperature and pressure, and it is usually produced under high temperature and high pressure. Due to the low thermal conductivity of the foaming material, uneven foaming will occur.

The process technology is complicated, special equipment is required, the yield is low, and the cost is very high

[0012] It also includes a method of layered design, first making each layer independently, and then bonding these layers together, but the interface of each layer is obvious, and the discontinuity of the dielectric constant between the layers of electromagnetic materials will increase the lens's Electromagnetic loss, which reduces the radiation efficiency of the antenna

Images