Cap feed source structure

Abstract

A cap feed source structure disclosed by the present invention comprises a protective cap, a medium support member and a circular waveguide, the circular waveguide and the medium support member are fastened through a triangular step, and the medium support member and the protective cap are fastened through a thread. The medium supporting piece is made of cross-linked polystyrene, so that the stable wave-transparent performance of the whole material is ensured; the upper end surface of the dielectric support member is metalized to ensure the microwave reflection efficiency of the end surface; metallization treatment is carried out on the upper end surface of the medium supporting piece, a mature vacuum plating process is adopted, copper plating and nickel plating are carried out on the material, and a plating layer is firm and reliable; the circular waveguide and the dielectric support member are assembled by a process of first partial assembly and then welding forming, so that the connection quality of the two devices is effectively ensured; the protective cap is made of a cross-linked polystyrene material and protects the metalized surface of the upper end of the supporting medium piece.

Description

Technical Field

[0001] The present invention relates to the technical field of microwave communication, and in particular to a hat feed structure. Background Art

[0002] As a new type of feed, the hat feed is currently widely used in various types of small-aperture parabolic antennas such as portable stations and mobile communication stations. The market generally uses the cooperation of waveguide, dielectric and aperture, and uses glue for bonding treatment. The bonding process of the glue has a great impact on the overall electrical performance of the feed, and the glue itself has poor environmental adaptability. The present invention takes a different approach, metallizes the surface of the dielectric material, and uses a mechanical fixing method for the dielectric and the waveguide, providing a new design method for the hat feed. Summary of the Invention

[0003] The purpose of the present invention is to provide a hat feed structure to solve the existing technical problems.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: A hat feed structure includes a protective cap, a dielectric support and a circular waveguide. The circular waveguide and the dielectric support are fastened by a triangular step, and the dielectric support and the protective cap are fastened by a thread.

[0005] Preferably: The circular waveguide is made of aluminum alloy and is subjected to conductive anodizing treatment as a whole.

[0006] Preferably: The dielectric support is made of cross-linked polystyrene to ensure the stable wave transmission performance of the overall material.

[0007] Preferably: The upper surface of the dielectric support is metallized to ensure the microwave reflection efficiency of the end face.

[0008] Preferably: The upper surface of the dielectric support is metallized by a mature vacuum electroplating process, first copper-plated and then nickel-plated on the material to ensure the firmness and reliability of the coating.

[0009] Preferably: The lower end of the dielectric support is provided with a triangular step, and the circular waveguide is provided with a triangular slot, and the circular waveguide and the dielectric support are mechanically connected.

[0010] Preferably: To ensure the manufacturability of the connection between the circular waveguide and the dielectric support, the circular waveguide needs to be disassembled. After assembly, the whole is welded and formed by a conventional waveguide brazing process for the circular waveguide, and this process can effectively ensure the connection quality.

[0011] Preferably: The protective cap is made of cross-linked polystyrene material to protect the metallized surface at the upper end of the support dielectric part.

[0012] Compared with the prior art, the present invention has the following advantages: (1): The dielectric support is made of cross-linked polystyrene to ensure stable wave transmission performance of the overall material; (2): The upper surface of the dielectric support is metallized to ensure the microwave reflection efficiency of the end face; (3): The upper surface of the dielectric support is metallized by a mature vacuum electroplating process. First, copper is plated on the material, and then nickel is plated to ensure the firmness and reliability of the coating.

[0013] (4): The circular waveguide and the dielectric support are assembled by first partially assembling and then welding to effectively ensure the connection quality of the two devices; (5): The protective cap is made of cross-linked polystyrene material to protect the metallized surface at the upper end of the support dielectric part. Description of the Drawings

[0014] Figure 1 is a cross-sectional view of the present invention.

[0015] Figure 2 is a cross-sectional view of the protective cap of the present invention.

[0016] Figure 3 is a cross-sectional view of the support dielectric of the present invention.

[0017] Figure 4 Exploded view of the circular waveguide of the present invention.

[0018] Figure 5 Disassembly drawing of the circular waveguide and the support dielectric part of the present invention before welding. Detailed Description of the Invention

[0019] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0020] As Figures 1 - 5 shown, a hat feed structure includes a protective cap 1, a dielectric support 2, and a circular waveguide 3. The circular waveguide 3 and the dielectric support 2 are fastened by a triangular step, and the dielectric support 2 and the protective cap 1 are fastened by a thread.

[0021] The circular waveguide 3 is made of aluminum alloy material and is subjected to conductive anodizing treatment as a whole. The dielectric support 2 is made of cross-linked polystyrene to ensure stable wave transmission performance of the overall material. The upper surface of the dielectric support 2 is metallized to ensure the microwave reflection efficiency of the end face. The upper surface of the dielectric support 2 is metallized by a mature vacuum electroplating process. First, copper is plated on the material, and then nickel is plated to ensure the firmness and reliability of the coating. A triangular step is provided at the lower end of the dielectric support 2, and a triangular card slot is provided on the circular waveguide 3. The circular waveguide 3 and the dielectric support 2 are mechanically connected.

[0022] To ensure the manufacturability of the connection between the circular waveguide 3 and the dielectric support 2, the circular waveguide 3 needs to be disassembled 6. After assembly, the overall structure is welded and formed using the conventional waveguide brazing process, which can effectively guarantee the connection quality.

[0023] The protective cap 3 is made of cross-linked polystyrene material to protect the metallized surface at the upper end of the support dielectric 2.

[0024] The present invention only adopts mechanical connection methods, effectively avoiding the unreliability and complexity of the original adhesive process.

[0025] The above is the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the teachings of the present invention, any changes, modifications, substitutions, and variations made to the embodiments without departing from the principles and spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. A hat feed structure, characterized in that: It comprises a protective cap (1), a dielectric support member (2) and a circular waveguide (3), wherein the circular waveguide (3) and the dielectric support member (2) are fastened via a triangular step, and the dielectric support member (2) and the protective cap (1) are fastened via a thread.

2. A hat feed structure according to claim 1, characterized in that: The circular waveguide (3) is made of aluminum alloy and is subjected to conductive oxidation treatment as a whole.

3. A hat feed structure according to claim 1, characterized in that: The medium support member (2) is made of cross-linked polystyrene.

4. A hat feed structure according to claim 1, characterized in that: The upper surface of the dielectric support member (2) is metallized.

5. A hat feed structure according to claim 1, characterized in that: The upper surface of the dielectric support (2) is metallized using a mature vacuum electroplating process, first copper-plating the material and then nickel-plating it.

6. A hat feed structure according to claim 1, characterized in that: A triangular step is provided at the lower end of the dielectric support member (2), a triangular slot is provided on the circular waveguide (3), and the circular waveguide (3) and the dielectric support member (2) are mechanically connected.

7. A hat feed structure according to claim 1, characterized in that: In order to ensure that the circular waveguide (3) and the dielectric support member (2) are connected and manufacturable, the circular waveguide (3) needs to be disassembled (6), and after assembly, the circular waveguide is welded and formed using a conventional waveguide brazing process.

8. A hat feed structure according to claim 1, characterized in that: The protective cap (3) is made of cross-linked polystyrene material and protects the metallized surface of the upper end of the supporting dielectric component (2).

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