Method for producing Luneberg lens

Abstract

The invention provides a method for producing a Luneberg lens, which can produce a high-performance Luneberg lens with a stable index under the conditions of a room temperature, the normal pressure and the low cost. The method comprises the steps of: forming a core by sticking a first type of particulate material into a spherical shape by an adhesive; spraying the adhesive on the surface of the core, putting the core into a container containing a second granular material, and allowing the core to roll to adhere the surface of the entire core to the second particulate material until the thickness of the second particulate material reaches a predetermined range, thereby forming a dielectric layer covering the core. Therefore, the dielectric layers with the predetermined number are formed toobtain a target Luneberg lens finished product. The method for producing a Luneberg lens is simple in production process, low in production cost, light in quality and easy to control the lens featuresand good in lens performance index.

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, 5G communications, 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 ...

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