A single element of an electromagnetic wave lens

Abstract

The invention provides a single component of an electromagnetic wave lens, which has combinable functions. A single element of an electromagnetic wave lens, in particular, includes a cone-shaped piece and an additional piece. A cavity is formed inside the cone-shaped piece, which is called a dielectric cavity; Thin part, the thinned part is a whole-circle thinned structure; one end of the additional part is connected to the tapered part through the thinned part. The invention has the following advantages: 1) The assembly structure of the cone and the attachment naturally fits with the theoretical model of the Lunberg lens, so the lens body has a strong ability to restore the theoretical effect; 2) A cone of one specification can be matched Various specifications of additional parts can be used to produce a variety of different specifications of the lens body, product development and production costs are low, and production efficiency is high; 3) component production, the consistency of product electrical properties is high; 4) it can be applied to a wide range of targets Size; 5) Compact and stable structure.

Description

technical field [0001] The invention relates to the field of communication equipment production, more specifically, to a single component of an electromagnetic wave lens. Background technique [0002] The Luneberg lens was proposed by RK Luneberg in 1944 based on the geometrical optics method. It is used as an antenna and scatterer, mainly used in fast scanning systems, satellite communication systems, automotive anti-collision radars, radar reflectors and other fields. [0003] The classic model of Lunberg lens is: from the center of the sphere to the outer diameter of the Lunberg lens, the dielectric constant should change continuously from 2 to 1 in accordance with certain mathematical laws. However, such an ideal structure does not exist in nature, so in practical design, a layered structure with step-change dielectric constant is often used to approximate the theoretical structure. [0004] In the prior art, the layered and step-change dielectric structures can be roug...

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Problems solved by technology

This solution discloses a lens structure composed of a medium carrier and several medium cones. Since the medium cone is a solid structure, the solution controls the filling ratio of the medium by adjusting the profile of the medium cone. However, this The method makes as long as you want to approach the principle of Lunberg lens, even if the length of the medium cone or the angle of the cone tip is different, the shape of the medium cone will basically show the shape of two pointed ends and a drum in the middle, and the medium cone is like this The shape of the medium will cause two problems: 1) The arrangement of the medium cones is not tight, and the problem that the medium cones deviate from the predetermined position is prone to occur; 2) When the diameter of the spherical lens of the target is fixed, the medium that can be set The number of cones should not be too large, otherwise it will seriously deviate from the required dielectric constant distribution, but the small number of dielectric cones means that the local dielectric constant distribution of the lens is actually not very uniform; 3 ) Due to the shape of the dielectric cone itself and their assembly rules, the maximum number of dielectric cones that can be set in a single spherical lens cannot be too much, which will cause the overall shape of the lens to be not close to a spherical or cylindrical shape surface, and this is contrary to the theoretical model of the Lunberg lens

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