Preparation method of curved conformal microstrip antenna array surface

Abstract

The invention discloses a preparation method of a curved conformal microstrip antenna array surface and aims to provide a technological method of a microstrip antenna completely conformal to a metal structural part. According to the technical scheme, microstrip patches selected to serve as antenna conformal array units, and a curved antenna array surface is directly printed on the metal structuralpart; sand-blasting roughening processing is performed first, wherein a direct writing pen A is adopted to spread a polyimide precursor solution in a layered mode on a sand-blasting surface of a metal carrier according to the shape and size of a dielectric layer of the microstrip antenna array surface till the requirement of total thickness is met, and after surface drying, temperature is raisedthrough a heating substrate for dehydration, and a conformal dielectric layer of the microstrip antenna array surface is formed through aggregation on the surface of the metal carrier; pulse lasers are adopted to ablate bottom holes of vertical interconnected holes in the array units of the polyimide dielectric layer, the bottom holes are filled with conductive silver paste to serve as the vertical interconnected holes, and sintering is performed to solidify the conductive silver paste; and a conductive silver paste array unit pattern is spread on the conformal dielectric layer and is solidified onto the surface of the dielectric layer after surface drying, so that the curved conformal microstrip antenna array surface is formed.

Description

technical field [0001] The invention relates to a method for preparing a curved microstrip antenna array by using a heterogeneous material 3D printing process. Background technique [0002] In the design of the antenna, in order to enhance the directivity of the antenna and increase the gain of the antenna, an array antenna is often used. According to the arrangement form of antenna array elements, array antennas can be divided into linear arrays, planar arrays, and conformal arrays. The structure of linear array and planar array is simple, and they have been widely used in practical engineering. Many technologies are mature, but they also have some shortcomings. For example, in practical applications, it is often necessary to achieve array coverage in a wide-angle domain, but it is often difficult to achieve the above-mentioned angular domain coverage requirements by using a linear array or a planar array. Conformal antennas or conformal arrays not only need to consider t...

AI Technical Summary

Problems solved by technology

To solve the process problems that the traditional printed circuit board process cannot realize the manufacture of curved antenna circuit boards, and the conformal assembly of curved surface antenna circuit boards and metal structural parts

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