Ring-focus antenna minor face medium supporting cover and manufacturing method thereof

A technology of ring-focus antenna and support cover, which is applied in the direction of antenna support/installation device, etc., can solve the problems such as the influence of scattering pattern, and achieve the effect of excellent dielectric performance, high rigidity and small specific gravity

CN103474741AActive Publication Date: 2013-12-25CHINA ELECTRONICS TECH GRP NO 39 RES INST
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2013-12-25

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Abstract

The invention provides a ring-focus antenna minor face medium supporting cover and a manufacturing method thereof. The medium supporting cover is of a thin-wall circular truncated cone whole sealing structure. The medium material of the medium supporting cover is formed by combination of epoxy resin and a high-strength S glass fiber reinforcement material, and an antioxidant material and an ultraviolet ray absorbing material are also included in the medium material. According to the ring-focus antenna minor face medium supporting cover and the manufacturing method thereof, a traditional antenna minor face metal brace rod is replaced with the antenna minor face medium supporting cover, and by means of the selection of medium material and backstepping design and machining of a forming die, the manufactured antenna minor face medium supporting cover has the advantages that the dielectric property is excellent, rigidity is high, the specific gravity is small, and the outer surface roughness meets requirements of engineering design; a test on a horn and a minor face combined feed source shows that compared with the traditional antenna minor face metal brace rod, the antenna minor face medium supporting cover has the advantages that influence on a scattering directional diagram is small, standing waves are not influenced, and only the radial direction is slightly changed.
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Description

technical field

[0001] The invention relates to the technical field of ring-focus antenna sub-surface support, in particular to a ring-focus antenna sub-surface dielectric support cover and a preparation method thereof. Background technique

[0002] With the rapid development of the aerospace industry, higher and higher requirements are put forward for ground measurement and control equipment. At this stage, most antenna sub-surfaces are still supported by metal struts, such as figure 1 shown. Steel plates, steel pipes, aluminum tubes and other metal parts are processed through the process of material preparation→inspection→fitter→inspection→welding→fitter→inspection→coating→inspection→fitter→inspection→welding→inspection→complete set→assembly→inspection. However, the geometrical diffraction theory was used to analyze the radiation characteristics of the antenna, and it was found that the metal strut used to support and fix the secondary side of the antenna has a serious i...

Examples

Embodiment Construction

[0018] Describe the present invention below in conjunction with specific embodiment:

[0019] The dielectric support cover on the sub-surface of the ring-focus antenna in this embodiment has a structure of Φ800×Φ400×600 mm and a thin-walled circular frustum fully enclosed structure.

[0020] The specific manufacturing process is:

[0021] Step 1: According to the dimensions of the dielectric support cover on the sub-surface of the ring-focus antenna to be formed, cast a basic mold.

[0022] Step 2: Paste a film on the outer surface of the basic mold and form a peelable mold after curing. In this way, the peelable mold can be used repeatedly, and the formed peelable mold is an outer film, which well solves the problem of integral molding and demoulding of large thin-walled secondary surface medium support and product appearance quality problems

[0023] Step 3: Apply a release agent on the inner surface of the peelable mold; use high-performance epoxy resin combined with high...