Profiling sandwich type microstrip antenna and radar system

Abstract

The utility model discloses a profiling sandwich type microstrip antenna and a radar system. The profiling sandwich type microstrip antenna comprises an upper cover plate, a microstrip antenna row, a lower cover plate, a fixing piece and a mounting piece. According to the utility model, the lower cover plate, the microstrip antenna row and the upper cover plate are arranged from bottom to top to form a sandwich structure; the inner walls of the upper cover plate and the lower cover plate are respectively provided with a power division network profiling cavity, and the power division network profiling cavities provide electromagnetic shielding and supporting effects for the microstrip antenna. In combination with the sandwich type structure and the power division network profiling cavity, the dielectric loss and the overall weight of the microstrip antenna are reduced, so that the requirements of light weight and high radiation efficiency are met.

Description

Technical Field

[0001] This utility model relates to the field of wireless communication technology, and in particular to a contoured sandwich microstrip antenna and radar system. Background Technology

[0002] Microstrip antennas have advantages such as low profile, easy deformation, and low cost, and are widely used in satellite communication, navigation, telemetry and remote control and other fields. However, traditional microstrip antennas have problems such as large weight, high loss and simple structure. Although existing microstrip antennas reduce weight through slotted or hollowed-out structures, they sacrifice radiation efficiency and cannot simultaneously meet the requirements of lightweight and high radiation efficiency. Utility Model Content

[0003] The main purpose of this invention is to provide a contoured sandwich microstrip antenna, which aims to solve the problem that existing microstrip antennas reduce weight through slotted or hollowed-out structures, but sacrifice radiation efficiency, making it difficult to simultaneously meet the requirements of lightweight and high radiation efficiency.

[0004] To achieve the above objectives, this utility model proposes a contour-following sandwich microstrip antenna, which includes:

[0005] The system includes an upper cover plate, a microstrip antenna array, a lower cover plate, a fixing component, and a mounting component. The microstrip antenna array is mounted on the lower cover plate via the mounting component. The upper cover plate and the lower cover plate are fixed by the fixing component, forming a sandwich structure. The inner walls of the upper cover plate and the lower cover plate are provided with power divider network contour cavities.

[0006] In one embodiment, the microstrip antenna row is made of a high-frequency dielectric substrate with a thickness of 0.254 mm, the upper cover plate is made of an aluminum alloy plate with a thickness of 3.4 mm, and the lower cover plate is made of an aluminum alloy plate with a thickness of 9.6 mm.

[0007] In one embodiment, the fastener includes a plurality of pre-applied adhesive fixing screws.

[0008] In one embodiment, the upper cover plate includes a first waveguide opening, and the lower cover plate includes a second waveguide opening. The first waveguide opening is provided with a limiting boss, and the second waveguide opening is provided with a limiting groove.

[0009] In one embodiment, the width of the limiting groove is 22.6 mm.

[0010] In one embodiment, the microstrip antenna row includes multiple unequal power dividers and multiple antenna elements, wherein the unequal power dividers and the antenna elements are integrated on a microstrip printed circuit board.

[0011] This invention also proposes a radar system, which includes the aforementioned contoured sandwich microstrip antenna.

[0012] This utility model's technical solution constructs a sandwich structure by arranging a lower cover plate, a microstrip antenna row, and an upper cover plate from bottom to top. Power divider network cavities are provided on the inner walls of both the upper and lower cover plates to provide electromagnetic shielding and support for the microstrip antenna. The combination of the sandwich structure and the power divider network cavities reduces the dielectric loss and overall weight of the microstrip antenna, thus achieving both lightweight design and high radiation efficiency. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the contour-following sandwich microstrip antenna of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the contour-following sandwich microstrip antenna of this utility model;

[0015] Figure 3 This is a circuit diagram of the microstrip antenna row of the contour-following sandwich microstrip antenna of this utility model;

[0016] In the diagram: 1-fixed component, 2-upper cover plate, 21-first waveguide port, 3-microstrip antenna row, 31-mounting component, 4-lower cover plate, 41-second waveguide port. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Microstrip antennas have advantages such as low profile, easy deformation, and low cost, and are widely used in satellite communication, navigation, telemetry and remote control and other fields. However, traditional microstrip antennas have problems such as large weight, high loss and simple structure. Although existing microstrip antennas reduce weight through slotted or hollowed-out structures, they sacrifice radiation efficiency and cannot simultaneously meet the requirements of lightweight and high radiation efficiency.

[0024] To address the aforementioned problems, this invention proposes a contour-following sandwich microstrip antenna. The specific embodiments of this invention will be described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-3 As shown, the contour-following sandwich microstrip antenna includes:

[0026] The upper cover plate 2, microstrip antenna row 3, lower cover plate 4, fixing component 1 and mounting component 31 are provided. The microstrip antenna row 3 is mounted on the lower cover plate 4 through the mounting component 31. The upper cover plate 2 and the lower cover plate 4 are fixed by the fixing component 1 to form a sandwich structure. The inner walls of the upper cover plate 2 and the lower cover plate 4 are provided with power divider network shaped cavities.

[0027] In one embodiment, the microstrip antenna row 3 is made of a high-frequency dielectric substrate with a thickness of 0.254 mm, the upper cover plate 2 is made of an aluminum alloy plate with a thickness of 3.4 mm, and the lower cover plate 4 is made of an aluminum alloy plate with a thickness of 9.6 mm.

[0028] In this embodiment, the microstrip antenna adopts a sandwich structure, namely, a lower cover plate 4, a microstrip antenna row 3, and an upper cover plate 2 arranged from bottom to top; and the inner walls of both the upper cover plate 2 and the lower cover plate 4 are provided with power divider network contour cavities, which provide electromagnetic shielding and support for the microstrip antenna, preventing resonance and reducing energy dissipation. Compared with traditional solid-state dielectric substrates, this embodiment uses an air dielectric sandwich structure, combining the electromagnetic shielding and support functions of the upper cover plate 2 and the lower cover plate 4, reducing the dielectric loss of the microstrip antenna and reducing the overall weight.

[0029] In this embodiment, the mounting component 31 can be implemented using mounting screws, and the fixing component 1 can be implemented using fixing screws; the upper cover plate 2 is made of aluminum alloy sheet with a thickness of 3.4mm, the microstrip antenna row 3 is made of high-frequency dielectric board with a thickness of 0.254mm, and the lower cover plate 4 is made of aluminum alloy sheet with a thickness of 9.6mm. The total thickness of the microstrip antenna is 9.6mm. Its processing technology is simple and its weight is smaller than that of existing microstrip antennas, thereby achieving the lightweighting of microstrip antennas.

[0030] This utility model's contoured sandwich microstrip antenna consists of a lower cover plate 4, a microstrip antenna row 3, and an upper cover plate 2 arranged from bottom to top to form a sandwich structure. A power divider network contoured cavity is provided on the inner wall of both the upper cover plate 2 and the lower cover plate 4 to provide electromagnetic shielding and support for the microstrip antenna. The combination of the sandwich structure and the power divider network contoured cavity reduces the dielectric loss and overall weight of the microstrip antenna, thus balancing the requirements of lightweight design and high radiation efficiency.

[0031] In one embodiment, the fastener 1 includes a plurality of pre-applied adhesive fixing screws.

[0032] In this embodiment, the fastener 1 is made of multiple pre-applied adhesive fixing screws to fix the upper cover plate 2 and the lower cover plate 4, thereby reducing losses, shielding interference, and enabling precise positioning and enhanced fixation during installation. Furthermore, the pre-applied adhesive fixing screws can significantly shorten the assembly time of the microstrip antenna.

[0033] In one embodiment, the upper cover plate 2 includes a first waveguide port 21, and the lower cover plate 4 includes a second waveguide port 41. The first waveguide port 21 is provided with a limiting boss, and the second waveguide port 41 is provided with a limiting groove.

[0034] In one embodiment, the width of the limiting groove is 22.6 mm.

[0035] In this embodiment, the first waveguide port 21 of the upper cover plate 2 is provided with a limiting boss, and the second waveguide port 41 of the lower cover plate 4 is provided with a limiting groove with a width of 22.6mm, so that the first waveguide port 21 and the second waveguide port 41 fit tightly to reduce electromagnetic wave energy leakage, reduce the sidelobe of the microstrip antenna, and improve the null depth of the microstrip antenna.

[0036] In one embodiment, the microstrip antenna row 3 includes multiple unequal power dividers and multiple antenna elements, wherein the unequal power dividers and the antenna elements are integrated on a microstrip printed circuit board.

[0037] In this embodiment, the microstrip antenna row 3 includes 50 unequal power dividers, 50 antenna elements, 2 coupling structures, and suspended strip transmission lines. The unequal power dividers and antenna elements are integrated on the same microstrip printed circuit board, which not only reduces the cable connections between the unequal power dividers and antenna elements, but also reduces the excitation current error of the antenna elements, making it easier to ensure the consistency of the manufacturing process.

[0038] This utility model also proposes a radar system, which includes the above-mentioned contoured sandwich microstrip antenna; the specific structure of the contoured sandwich microstrip antenna is as described in the above embodiments. Since this radar system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0039] This utility model's contour-following sandwich microstrip antenna adopts a sandwich structure consisting of an upper cover plate 2, a microstrip antenna row 3, and a lower cover plate 4. The upper cover plate 2 is formed from a 3.4mm thick aluminum alloy sheet, the microstrip antenna row 3 itself is only 0.254mm thick, and the lower cover plate 4 is formed from a 9.6mm thick aluminum alloy sheet, with a total thickness of 9.6mm. The manufacturing process is simple. At the same time, the inner walls of the upper cover plate 2 and the lower cover plate 4 are designed with contour-following cavities for a power divider network to prevent resonance of the microstrip antenna and reduce energy dissipation. By using an air dielectric sandwich layer instead of a traditional solid dielectric substrate, combined with the electromagnetic shielding and support functions of the upper and lower cover plates 4, the dielectric loss and overall weight of the antenna are effectively reduced. Applying this contour-following sandwich microstrip antenna to a radar system can meet the requirements of lightweight, low-loss, and easy-to-maintain radar systems.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A profiled sandwich microstrip antenna, characterized by The profiled sandwich microstrip antenna comprises: An upper cover plate, a microstrip antenna row, a lower cover plate, a fixing member and a mounting member, the microstrip antenna row is mounted on the lower cover plate through the mounting member, the upper cover plate and the lower cover plate are fixed through the fixing member, forming a sandwich structure, and the inner wall of the upper cover plate and the lower cover plate is provided with a profiled cavity of a power division network.

2. The profiled sandwich microstrip antenna according to claim 1, characterized in that The microstrip antenna row adopts a high-frequency dielectric plate with a thickness of 0.254 mm, the upper cover plate adopts an aluminum alloy plate with a thickness of 3.4 mm, and the lower cover plate adopts an aluminum alloy plate with a thickness of 9.6 mm.

3. The profiled sandwich microstrip antenna according to claim 1, wherein The fixing member comprises a plurality of pre-glued fixing screws.

4. The profiled sandwich microstrip antenna according to claim 1, wherein The upper cover plate comprises a first waveguide port, the lower cover plate comprises a second waveguide port, the first waveguide port is provided with a limiting boss, and the second waveguide port is provided with a limiting groove.

5. The profiled sandwich microstrip antenna according to claim 4, characterized in that The limiting groove has a width of 22.6 mm.

6. The profiled sandwich microstrip antenna according to claim 1, characterized in that The microstrip antenna row comprises a plurality of unequal power dividers and a plurality of antenna units, and the unequal power dividers and the antenna units are integrally arranged on a microstrip printed board.

7. A radar system, characterized by The radar system comprises the profiled sandwich microstrip antenna according to any one of claims 1-6.

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