metal plate lens
A metal plate and lens technology, applied in the direction of waveguide, circuit, waveguide-type devices, etc., can solve the problems of dielectric lens shape, volume, weight, etc., and achieve the effect of small volume and light weight
Active Publication Date: 2018-10-19
NAT UNIV OF DEFENSE TECH
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to solve the problem that the dielectric lens cannot be made into a flat plate structure and shaped on the application platform in the prior art where the phase of the microwave wavefront needs to be adjusted, and its volume and weight are relatively large. Provides a small, lightweight metal plate lens
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[0030] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and embodiments. The following examples are only used to illustrate the present invention, but not to limit the scope of the present invention.
[0031]figure 1 It is a schematic diagram of the plano-convex dielectric lens 2 installed on the antenna mouth 1 published in the background technology [Yuan Chengwei. Research on New High-Power Microwave Coaxial Mode Converter and Mode Conversion Antenna, Doctoral Dissertation, 2006.]. This plano-convex dielectric lens 2 can improve the microwave far-field gain, but it cannot be made into a flat plate structure to shape the application platform, and under the trend of compact development of high-power microwaves, the volume and weight of the plano-convex dielectric lens 2 are problematic. Nor can it be ignored.
[0032] figure 2 It is a schematic diagram of the overall structure of the metal plate le...
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The present invention discloses a metal plate lens which aims at solving the problem that a dielectric lens can not be shaped on an application platform when a microwave wavefront phase needs to be adjusted. The invention is composed of n quadratic discrete phase adjustment units, each of the discrete phase adjustment units formed by alternately stacked m layered cross stitched metal plates and the m-1 layered support plates; The cross stitched metal plates are square metal plates with cross stitches, and the m-layered cross stitched metal plates are stacked to ensure that the cross stitches on the m layered cross stitched metal plates are opposite to each other. The support plates are square metal plates with square through holes. The twisting angles of the cross stitches of the discrete phase adjustment units in one column in the microwave transmission direction are equal and the twist angle difference between adjacent columns can be calculated through the formula described in the image. According to the invention, it is possible to adjust the circularly polarized microwave wavefront phase outputted by a mouth antenna and adjust the microwave beam to be directed to a spatial target position. In addition, the lens of the invention is easy to be shaped on an application platform. Small sized and light in weight, the lens is suitable for the requirement for making a high power and compact lens.
Description
technical field [0001] The invention relates to the technical field of high-power microwaves, in particular to a metal plate lens in a high-power microwave system. Background technique [0002] At present, high-power microwaves refer to electromagnetic waves with peak power greater than 100 MW and frequencies between 1 and 100 GHz, which are used in a variety of military and civilian applications. [0003] Generally, a high-power microwave system needs to radiate microwaves through a lens. There are two main functions of the lens. One is to isolate the atmosphere from the inside of the microwave source to prevent the atmosphere from entering the microwave source and cause the electric field to break down. The other is to adjust the microwave The phase at different positions behind the lens enables the output microwave to meet the application requirements in terms of far-field gain and microwave pointing. The commonly used lenses are mainly dielectric lenses, which are mainl...
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IPC IPC(8): H01P3/20
CPCH01P3/20
Inventor 袁成卫赵雪龙刘列张强冯加怀彭升人巨金川张军
Owner NAT UNIV OF DEFENSE TECH