Preparation method of curved conformal microstrip antenna array surface

A microstrip antenna and antenna array technology, applied in antenna arrays, individually powered antenna arrays, antennas, etc., can solve problems such as the inability to manufacture curved antenna circuit boards, avoid long-term reliability problems, shorten size, avoid The effect of deteriorating electrical properties

Active Publication Date: 2019-05-14
10TH RES INST OF CETC
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Problems solved by technology

To solve the process problems that the traditional printed circuit board process cannot realize the manufacture of curve

Method used

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  • Preparation method of curved conformal microstrip antenna array surface
  • Preparation method of curved conformal microstrip antenna array surface

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Embodiment Construction

[0017] refer to Figure 1-Figure 2. According to the present invention, the microstrip patch is selected as the antenna conformal array unit, and the curved antenna array is directly printed on the metal structure. The carrier 1 is fixed on the heating substrate 5 for preheating; use the direct writing pen A to write the polyimide precursor solution layer by layer on the sandblasting surface of the metal carrier 1 according to the shape and size of the dielectric layer 2 of the microstrip antenna front until the total thickness requirements After the surface of the polyimide precursor solution is dry, the temperature of the substrate 5 is raised to dehydrate the polyimide precursor solution and polymerize on the surface of the metal carrier 1 to form a conformal dielectric layer 2 of the microstrip antenna front; The position of the array element of the imide dielectric layer 2 is ablated by pulse laser to form the bottom hole of the vertical interconnection hole 3, and then ...

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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...

Claims

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Application Information

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IPC IPC(8): H01Q21/00H01Q21/20
Inventor 刘秀利苑博
Owner 10TH RES INST OF CETC
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