Low-loss conical antenna housing

Abstract

The utility model discloses a low-loss conical antenna housing, which comprises an antenna housing shell, a housing body is arranged in the antenna housing shell, and an assembly ring and an antenna are mounted in the housing body. The cover body comprises a rear cover body with the diameter decreasing gradually from bottom to top, a middle cover body installed on the rear cover body and a front cover body arranged on the top of the middle cover body. The main body material of the housing of the radome structure is high silica, so that the strength of the radome reaches more than 200MPa, the air cavity is arranged in the radome structure, an antenna and other electronic devices can be protected from being influenced by an external complex environment, and the loss of the radome is reduced to the greatest extent.

Description

Technical Field

[0001] This utility model belongs to the field of antenna radome technology for weapon antennas. Specifically, this utility model relates to a low-loss conical antenna radome. Background Technology

[0002] A radome is primarily used to shield an antenna, mainly for visibility and protection purposes, to protect the antenna from harsh environments. In practical use, the quality and structural layout of the radome have a crucial impact on the antenna's radiation performance and the overall lifespan of the product.

[0003] Traditional radomes are mainly made of materials such as fiberglass. These radomes are heavy and have high losses, which greatly reduces the transmission efficiency of the antenna and affects its normal operation. Utility Model Content

[0004] This invention provides a low-loss conical radome that solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a low-loss conical radome, including a radome shell, a cover body is provided inside the radome shell, and an assembly ring and an antenna are installed inside the cover body.

[0006] Preferably, the cover includes a rear cover with a diameter decreasing from bottom to top, an intermediate cover mounted on the rear cover, and a front cover disposed on top of the intermediate cover.

[0007] Preferably, the antenna is connected to the intermediate cover via an assembly ring and screws.

[0008] Preferably, the front cover is a hemisphere with a diameter of 11.82 mm, the middle cover is a frustum shape, and its upper bottom diameter is 18.751 mm, lower bottom diameter is 30.816 mm, and the side surface is an arc surface with a diameter of 564.813 mm.

[0009] Preferably, the radome housing is cone-shaped and made of a lightweight high-silica composite material, and the thickness of the high-silica composite material of the radome housing is at least 3 mm.

[0010] The beneficial effects of adopting the above technical solutions are:

[0011] First, the outer shell of the radome structure is made of high-silicon oxide, which gives the radome a strength of over 200MPa. The interior is an air cavity, which can protect the antenna and other electronic components from the influence of the complex external environment and minimize the loss of the radome itself.

[0012] Second, this low-loss radome structure, with its lightweight high-silica composite material shell, can reduce the overall weight of the device while maintaining its rigidity. The lightweight radome shell not only makes the entire device easier to carry and deploy, but also reduces the risk of structural fatigue and damage caused by excessive weight. At the same time, due to the reduction in weight, the stability of the radome in dynamic environments is also improved, which is crucial for ensuring the normal operation of the antenna in complex environments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic cross-sectional view of the structure of this utility model;

[0015] Figure 3 This is a structural diagram of the cover;

[0016] Figure 4 This is a schematic diagram of the antenna and its assembly ring structure;

[0017] Figure 5 This is a transmission performance diagram of a high-silica composite material;

[0018] Figure 6 This is another transmission performance diagram of high-silica composite materials;

[0019] Figure 7 It is the radiation pattern of the antenna;

[0020] Figure 8 It is the radiation pattern of the antenna and radome integrated together;

[0021] in:

[0022] 1. Antenna radome housing; 2. Radome body; 21. Rear radome body; 22. Middle radome body; 23. Front radome body; 3. Assembly ring; 4. Antenna. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of this utility model, and to facilitate its implementation.

[0024] Specifically, such as Figures 1 to 6 As shown, a low-loss conical radome includes a radome housing 1, a cover body 2 is disposed inside the radome housing 1, and an assembly ring 3 and an antenna 4 are installed inside the cover body 2.

[0025] It should be noted that in this embodiment, both the outer shell 1 and the hood 2 are made of high oxygen silicon composite material, which can mainly withstand a strength of >200MPa, while also achieving good wave transmission function, so that the antenna of the internal target detection equipment is physically isolated from the outside world, preventing seawater, salt spray and humid heat from corroding the antenna.

[0026] The substrate dielectric constant of antenna 4 is less than 4, and the loss is less than 0.9dB in the Ku band.

[0027] In an ideal, lossless scenario, the thickness of the radome can be expressed as:

[0028]

[0029] Where is a positive integer, is the relative permittivity of the radome, and is the angle of incidence of the plane wave.

[0030] The cover 2 includes a rear cover 21 with a diameter decreasing from bottom to top, an intermediate cover 22 mounted on the rear cover 21, and a front cover 23 disposed on the top of the intermediate cover 22.

[0031] The mounting ring structure inside the radome is made of aluminum, which allows the antenna to be fixedly installed inside the radome.

[0032] The antenna 4 is connected to the intermediate cover 22 via the assembly ring 3 and screws.

[0033] The front cover 23 is a hemisphere with a diameter of 11.82 mm, and the middle cover 22 is a frustum shape with a top diameter of 18.751 mm, a bottom diameter of 30.816 mm, and a side surface with a diameter of 564.813 mm.

[0034] Preferably, the radome housing 1 is cone-shaped and is made of a lightweight high-silica composite material, and the thickness of the high-silica composite material of the radome housing 1 is at least 3 mm.

[0035] It should be noted that, Figure 4 The antenna has a radiation pattern, a maximum gain of 10.1106 dB, a half-power beamwidth of 56.2098° in the E-plane, and a half-power beamwidth of 46.4450° in the H-plane.

[0036] Figure 5 The radiation pattern of the antenna and radome is shown. The maximum gain of the antenna is 8.2468 dB, the half-power beamwidth of the E-plane is 63.7657°, and the half-power beamwidth of the H-plane is 47.1722°.

[0037] pass Figure 4 and Figure 5Comparative analysis shows that adding a radome to the antenna front end reduces the maximum gain of the antenna radiation by 1.8638 dB, increases the half-power beamwidth in the E-plane by approximately 7.5°, and increases the half-power beamwidth in the H-plane by approximately 0.73°. The performance variation range after adding the radome meets the technical requirements for the development of missile-borne antenna systems.

[0038] The specific working method is described below using specific embodiments: Example 1

[0039] In this invention, assuming the antenna power frequency is 24.9 GHz, the dielectric constant of the radome material is 3, and theoretically the optimal thickness of the radome is 3.48 mm. Example 2

[0040] In this invention, the dielectric constant of the high-silica composite material may have slight fluctuations. When the radome thickness is 3.48 mm, the transmission loss of different dielectric constants is between 0.9154 and 1.0242 dB.

[0041] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A low-loss conical antenna cover comprising an antenna cover housing (1), characterized in that The antenna cover shell (1) is internally provided with a cover body (2), the cover body (2) is internally provided with an assembling ring (3) and an antenna (4); The cover body (2) comprises a rear cover body (21) with a diameter decreasing from bottom to top, an intermediate cover body (22) mounted on the rear cover body (21) and a front cover body (23) arranged on the top of the intermediate cover body (22); The front cover body (23) is arranged as a hemisphere with a diameter of 11.82 mm, the intermediate cover body (22) is arranged as a circular truncated cone, and the upper bottom surface is arranged as a circular surface with a diameter of 18.751 mm, the lower bottom surface is arranged as a circular surface with a diameter of 30.816 mm, and the side surface is arranged as an arc surface with a diameter of 564.813 mm; The antenna cover shell (1) is arranged as a cone, and is made of light-weight high-silica composite material, and the thickness of the high-silica composite material of the antenna cover shell (1) is at least 3 mm.

2. A low loss tapered radome according to claim 1, characterized in that: The antenna (4) is connected with the intermediate cover body (22) through the assembling ring (3) and screws.

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