Composite helical antenna and preparation method thereof
A composite material and helical antenna technology, which is applied to antennas, flexible antennas, folded antennas and other directions, can solve the problems of high mass, complex preparation process and high production cost of helical antennas, and achieves low cost, simple operation and light weight. Effect
Inactive Publication Date: 2020-06-30
BEIHANG UNIV
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Problems solved by technology
[0003] The purpose of the present invention is to provide a composite material helical antenna and its preparation method to solve the problems of traditional helical antennas such as high quality, complex preparation process and high production cost.
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[0027] The present invention will be further described below in conjunction with the accompanying drawings and implementation examples.
[0028] The invention provides a composite material helical antenna, which is composed of a core mold 1 and a composite material outer layer 2 . The overall appearance of the composite helical antenna is helical, and the cross section is divided into two parts, the inner layer is the mandrel 1, and the outer layer is the outer layer 2 of the composite material. The material of the mandrel 1 is a metal material or a polymer material. If a polymer material is used to prepare the mandrel, the polymer material is epoxy resin, styrene, styrene-butadiene, trans polyisoprene, cyanide, etc. ester, polyurethane, polynorbornene, polyimide, bismaleimide, polyamide, polyphenylene sulfide, polyaryletherketone or polyvinyl alcohol. The composite material outer layer 2 is composed of polymer material and reinforcement material, wherein the "polymer materia...
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The invention provides a composite material helical antenna. The composite material helical antenna is composed of a composite material and a core mold. The overall appearance of the composite material helical antenna is helical, the cross section is divided into two parts, the inner layer is a core mold, and the outer layer is a composite material outer layer. The composite material helical antenna has large deformability in the direction of the center line, axial compression loads are applied to the two ends of the composite material helical antenna in the direction of the center line, the screw pitch is reduced, the folding function is achieved, the compression loads are removed, the initial configuration is rapidly restored through strain energy stored by the composite material helicalantenna, and the unfolding function is achieved. The invention discloses a preparation method of a composite material helical antenna. The preparation method mainly comprises five steps. The core mold has three functions. The composite material helical antenna has the advantages of excellent performance, simple structure, low cost, light weight, high rigidity, corrosion resistance and high reliability. In addition, the preparation method disclosed by the invention is relatively simple to operate, so that the composite material helical antenna has a very good engineering application value.
Description
technical field [0001] The invention provides a composite material helical antenna and a preparation method thereof, belonging to the technical field of composite material structure design and manufacture. Background technique [0002] Navigation and positioning systems are more and more widely used in civilian and military fields. Radio technology equipment such as communication, radar, navigation, and broadcasting all transmit information through radio waves. The device used to transmit and receive radio waves is called an antenna. The helical antenna has become a research hotspot in the field of navigation and positioning systems due to its wide frequency band, wide lobe and good circular polarization characteristics. At present, traditional helical antennas are mostly made of metal materials. Although such metal helical antennas have good elastic stiffness and high strength, they cannot meet the requirements of lightweight applications due to their large mass. At the ...
Claims
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IPC IPC(8): H01Q1/08H01Q1/36B32B1/08B32B15/14B32B27/12B32B33/00
CPCB32B1/08B32B5/024B32B15/14B32B27/12B32B33/00B32B2260/021B32B2260/046H01Q1/087H01Q1/36H01Q1/364
Inventor 白江波刘天伟
Owner BEIHANG UNIV