High temperature resistant conformal broadband antenna

Abstract

The application discloses a high-temperature-resistant conformal wideband antenna and belongs to the conformal wideband antenna field.The high-temperature-resistant conformal wideband antenna comprises an adapter seat, a supporting cylinder and at least two antenna array elements and a cover plate; the supporting cylinder is assembled on the adapter seat, the cover plate is assembled on the supporting cylinder; at least two antenna array elements are arranged on the outer periphery of the supporting cylinder; and the outer peripheries of the at least two antenna array elements are sequentially connected to form a looped line antenna and are sleeved on the outer periphery of the supporting cylinder; the high-temperature-resistant conformal wideband antenna can fully meet the assembly requirements in a narrow space on a missile through the optimization design of the arrangement forms of the plurality of antenna array elements. The high-temperature-resistant conformal wideband antenna has a simple overall structure and is convenient to disassemble and assemble, can meet the assembly requirements in a narrow space on a missile, greatly increases the frequency range of the antenna through the looped antenna array mode and has good practical value and application prospect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of conformal wideband antenna, and particularly relates to a high-temperature-resistant conformal wideband antenna. BACKGROUND

[0002] An antenna is an important device for transmitting and receiving radio signals in electronic equipment. The conventional antenna can be installed outside or inside the platform, but it will bring various problems, such as affecting the stealth performance, causing difficult heat dissipation, occupying internal space, affecting load configuration, etc. Thus, the conformal antenna emerges as the times require. The conformal antenna refers to an antenna or antenna array that can keep consistent with the shape of the weapon platform, which is equivalent to being attached to the outer surface of the platform and integrated with the platform shape structure.

[0003] At present, the conventional conformal wideband antenna is usually used in room temperature environment, and a plurality of antenna elements are arranged and combined in a certain form to realize the wideband section. It cannot meet the reliable work under the working condition of high working environment temperature, and most of the conformal antenna elements are large in size and single in installation form, which cannot be installed and used in a narrow space, and it is difficult to meet the wide-angle beam coverage requirement under the harsh constraints on the missile. SUMMARY

[0004] In view of one or more of the above defects or improvement requirements of the prior art, the present application provides a high-temperature-resistant conformal wideband antenna, which is designed in a ring shape, so as to further increase the radiation area of the antenna on the basis of meeting the assembly requirements on the missile, so as to increase the frequency range of the antenna.

[0005] To achieve the above-mentioned purpose, the present application provides a high-temperature-resistant conformal wideband antenna, which comprises an adapter seat, a support cylinder and a cover plate, and at least two antenna elements.

[0006] The support cylinder is assembled on the adapter seat, the cover plate is assembled on the support cylinder, the antenna elements are assembled on the outer periphery of the support cylinder, and

[0007] The outer peripheries of the two adjacent antenna elements are attached, so as to form a closed ring line antenna sleeve on the support cylinder.

[0008] As a further improvement of the present application, the two opposite sides of the outer periphery of the antenna element are respectively formed with a protruding part and a recessed part, and the shape of the protruding part matches the shape of the recessed part.

[0009] The protruding part and the recessed part of the two adjacent antenna elements are attached together.

[0010] As a further improvement of the present application, the antenna element has eight, and the eight antenna elements are arranged in a ring shape with the axis of the support cylinder as the center line, and are sequentially connected to form a closed ring structure.

[0011] As a further improvement of the present invention, the antenna array element includes a mounting plate, an antenna substrate, and a protective cover;

[0012] The antenna substrate is assembled on the mounting plate; the protective cover is mounted on the mounting plate and covers the antenna substrate inside it.

[0013] As a further improvement of the present invention, an air layer is left between the antenna substrate and the protective cover to insulate against external heat.

[0014] As a further improvement of the present invention, sealant is applied to the gaps between the protective cover and the mounting plate, and between the protective cover and the antenna substrate, to achieve airtightness of each antenna array element.

[0015] As a further improvement of the present invention, the antenna substrate includes a flexible circuit radiating plate and a foam support, wherein the flexible circuit radiating plate is attached to the foam support.

[0016] As a further improvement of the present invention, the top and bottom surfaces of the foam support are each designed with two relief grooves for applying sealant.

[0017] As a further improvement of the present invention, the protective cover is made of polyimide material; and the foam support is made of high-temperature resistant foam.

[0018] As a further improvement of the present invention, a plurality of mounting lugs are provided on the outer periphery of the support cylinder, and a plurality of grooves are formed at the bottom of the adapter corresponding to the mounting lugs.

[0019] The mounting lug is embedded in the groove and connected to the groove by fasteners to achieve the assembly between the support cylinder and the adapter.

[0020] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0021] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include:

[0022] (1) The high-temperature conformal broadband antenna of the present invention optimizes the arrangement of multiple antenna array elements to fully meet the assembly requirements in the narrow space of the missile. At the same time, the antenna signal transmission and reception performance is further enhanced by the design of a flexible circuit radiating plate with a large radiating surface, effectively increasing the frequency range of the antenna.

[0023] (2) The high-temperature resistant conformal broadband antenna of the present invention achieves double airtightness by using sealant on both individual antenna elements and the entire conformal broadband antenna, ensuring the reliability of the conformal broadband antenna's airtightness performance. At the same time, the protective cover is made of high-temperature resistant polyimide, and the internal foam support is made of high-temperature resistant foam. The combined effect of these two materials gives the conformal broadband antenna high-temperature resistance, meeting the requirements for its use in high-temperature environments.

[0024] (3) The high-temperature conformal broadband antenna of the present invention has a simple overall structure and is easy to assemble and disassemble. It can not only meet the assembly requirements of the narrow space on the missile, but also greatly increase the frequency range of the antenna through the ring antenna array method, which has good practical value and application prospects. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall frontal half-section structure of the high-temperature conformal broadband antenna in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the side cross-sectional structure of the antenna array element in the high-temperature conformal broadband antenna in this embodiment of the invention;

[0027] Figure 3 This is a schematic diagram of the front view structure of the antenna array element in the high-temperature conformal broadband antenna in this embodiment of the invention;

[0028] Figure 4 This is a schematic diagram of the side cross-sectional structure of the antenna substrate in the high-temperature conformal broadband antenna in this embodiment of the invention;

[0029] Figure 5 This is a schematic diagram of the overall structure of the antenna array element in the high-temperature conformal broadband antenna in this embodiment of the invention;

[0030] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0031] 100. Adapter socket;

[0032] 200. Support cylinder; 201. Mounting lugs;

[0033] 300. Antenna element; 301. Protrusion; 302. Recess; 303. Mounting plate; 304. Antenna substrate; 305. Protective cover; 306. Flexible circuit radiating board; 307. Foam support; 308. Sealant;

[0034] 400. Cover plate. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element 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 invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] Example:

[0041] Please see Figure 1 This invention provides a high-temperature resistant conformal broadband antenna, which adopts a ring-shaped assembly design to adapt to the assembly requirements of the narrow space on the missile, and at the same time can increase the antenna's radiating surface to improve the frequency range that the antenna can receive or transmit, thereby further improving the antenna's practicality.

[0042] Specifically, the conformal broadband antenna in the preferred embodiment of the present invention includes an adapter 100, a support cylinder 200, and at least two antenna elements 300; the support cylinder 200 is mounted on the adapter 100, and at least two antenna elements 300 are sequentially mounted and connected, surrounding the outer peripheral surface of the support cylinder 200 and covering the outside of the support cylinder 200.

[0043] More specifically, such as Figure 1 As shown, at least one protrusion 301 and at least one recess 302 are respectively provided on opposite sides of the outer periphery of the antenna array element 300; and the shape of the protrusion 301 matches the shape of the recess 302, so that after the two antenna array elements 300 are assembled, the protrusion 301 of one antenna array element 300 can be embedded into the recess 302 of the other antenna array element 300, thereby enabling the two antenna array elements 300 to be assembled more completely; further preferably, through holes are formed on the protrusion 301 and / or the recess 302, and corresponding threaded holes are formed on the outer periphery of the support cylinder. In actual use, the operator first assembles the two antenna array elements 300 onto the outer periphery of the support cylinder 200, and then passes the bolts through the through holes and screws them into the threaded holes on the support cylinder 200.

[0044] In a specific embodiment, such as Figure 1 As shown, the preferred antenna array elements 300 are eight in number. These eight antenna array elements 300 are arranged in a ring around the axis of the support cylinder 200 and assembled sequentially to form a closed circular structure mounted on the outside of the support cylinder 200. The multiple ring-shaped antenna array elements 300 increase the radiating surface of the antenna, thereby expanding its frequency band and giving the arrayed antenna wideband characteristics.

[0045] In the actual assembly process, sealant 308 is first applied to each individual antenna element 300 to achieve the first airtightness. Then, after the eight antenna elements 300 are assembled together, sealant 308 is applied again to achieve the second airtightness. The combined effect of the two airtightnesses ensures the reliability of the airtightness of the conformal broadband antenna and prevents moisture from entering the antenna element 300 and affecting the overall antenna performance.

[0046] Furthermore, clearance slots are provided on the outer periphery of the support cylinder 200 corresponding to the positions of each antenna element 300 to facilitate the exit of wires from each antenna element. Meanwhile, markings are engraved on the inner wall of the support cylinder 200 to ensure the uniqueness of the mounting position of each antenna element 300 on the support cylinder 200, facilitating maintenance and fault location. Additionally, a cover plate 400 is provided on the support cylinder 200 to insulate the top of the antenna from heat.

[0047] In a specific application scenario, in a preferred embodiment of the present invention, the antenna is mounted on the projectile body, and the shape of its support cylinder 200 is the same as the shape of the front end of the phased array. The antenna array elements 300 are evenly distributed around the periphery of the support cylinder 200, so that the antenna array elements 300, after being arrayed, have conformal characteristics with the projectile body.

[0048] Through the above structural design, the conformal broadband antenna not only conforms to the shape of the projectile but also meets its assembly requirements on the projectile, enabling rapid assembly, disassembly, and maintenance. Furthermore, the multi-faceted design allows for a wider frequency coverage.

[0049] More specifically, such as Figure 2 and Figure 3 As shown, the antenna array element 300 includes a mounting plate 303, a protective cover 305, and an antenna base 304; wherein, the antenna base 304 is mounted on the mounting plate 303, and the protective cover 305 is mounted on the mounting plate 303 at the same side as the antenna base 304, and covers the antenna base 304 inside it, thereby forming a complete antenna array element 300 structure.

[0050] Furthermore, the protective cover 305 and the mounting plate 303 are assembled and fixed together with multiple screws. At the same time, sealant is applied to the gaps between the protective cover 305 and the mounting plate 303, and between the protective cover 305 and the antenna base 304, to ensure that each antenna element 300 is airtight, which can effectively prevent moisture from entering the antenna element 300 and affecting the antenna performance.

[0051] More specifically, the antenna substrate 304 includes a flexible circuit radiating plate 306 and a foam support 307; the foam support 307 is adhered to the flexible circuit radiating plate 306 to form the antenna substrate 304. Two recessed grooves for applying sealant 308 are designed on the top and bottom surfaces of the foam support 307, and sealant 308 is applied accordingly. Preferably, the sealant 308 is 703 adhesive. By applying the sealant 308, a secondary bonding and fixation between the flexible circuit radiating plate 306 and the foam support 307 can be achieved, avoiding the quality risk of detachment that may occur when relying solely on the adhesive of the flexible circuit radiating plate 306 for fixation under prolonged high temperature and vibration conditions. Preferably, the foam support 307 is a high-temperature resistant foam support.

[0052] More preferably, an air layer is left between the protective cover 305 and the antenna substrate 304, and the thickness of the air layer is preferably 2mm. In actual use, the air layer can be used to insulate against external heat, making the antenna element 300 more resistant to high temperatures.

[0053] In the actual assembly process, the antenna base 304 is fixed to the mounting plate 303 by fasteners 102. Because the high-temperature resistant foam has a certain elasticity, it is difficult to ensure that the antenna base 304 can be reliably fixed during vibration by using only spring washers for anti-loosening. Therefore, 703 glue is applied to the head of the screws that fix the antenna base 304 to bond the screws to the high-temperature resistant foam, thereby achieving secondary anti-loosening of the fasteners 102 fixing the antenna base 304 and ensuring the reliable installation of the antenna base 304.

[0054] More preferably, the protective cover 305 is made of polyimide material, which has high temperature resistance and low dielectric constant. There is a 2mm air layer between the protective cover 305 and the antenna substrate 304, which can provide a certain heat insulation effect for the antenna substrate 304. The foam support 307 inside the antenna substrate 304 is also made of high temperature resistant foam. Therefore, the conformal broadband antenna has high temperature resistance characteristics.

[0055] More specifically, the antenna substrate 304 has a feed point on its side. The connector passes through the mounting plate 303 and is soldered to the feed point on the antenna substrate 304 to realize the input and output of the antenna signal.

[0056] In addition, in such Figure 1 In one specific embodiment shown, the support cylinder 200 is provided with a plurality of mounting lugs 201, and a groove 101 is formed at the bottom of the adapter 100 corresponding to the mounting lug 201 for mating with the mounting lug 201. In actual use, the adapter 100 is sleeved onto the support cylinder 200, so that the mounting lug 201 is located in the groove 101, and then the mounting lug 201 and the groove 101 are finally connected together by fasteners 102 to realize the assembly design between the support cylinder 200 and the adapter 100.

[0057] (1) The high-temperature conformal broadband antenna of the present invention optimizes the arrangement of multiple antenna array elements to fully meet the assembly requirements in the narrow space on the missile. At the same time, the antenna signal transmission and reception performance is further enhanced by the design of a flexible circuit radiating plate with a large radiating surface, effectively increasing the frequency range of the antenna.

[0058] (2) The high-temperature resistant conformal broadband antenna of the present invention achieves double airtightness by using sealant on both individual antenna elements and the entire conformal broadband antenna, ensuring the reliability of the conformal broadband antenna's airtightness performance. At the same time, the protective cover is made of high-temperature resistant polyimide, and the internal foam support is made of high-temperature resistant foam. The combined effect of these two materials gives the conformal broadband antenna high-temperature resistance, meeting the requirements for its use in high-temperature environments.

[0059] (3) The high-temperature conformal broadband antenna of the present invention has a simple overall structure and is easy to assemble and disassemble. It can not only meet the assembly requirements of the narrow space on the missile, but also greatly increase the frequency range of the antenna through the ring antenna array method, which has good practical value and application prospects.

[0060] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A high-temperature resistant conformal broadband antenna, characterized in that, It includes an adapter (100), a support cylinder (200) and a cover plate (400), as well as at least two antenna array elements (300). The support cylinder (200) is mounted on the adapter (100), and the cover plate (400) is mounted on the support cylinder (200) to insulate the heat from the top of the antenna; the antenna array element (300) is mounted on the outer periphery of the support cylinder (200); and The outer peripheries of two adjacent antenna array elements (300) are attached together, thereby forming a closed loop antenna that is sleeved on the support cylinder (200); The antenna array element (300) has a protrusion (301) and a recess (302) formed on opposite sides of its outer periphery; the shape of the protrusion (301) matches the shape of the recess (302); The protrusions (301) and recesses (302) of two adjacent antenna array elements (300) are attached together; There are eight antenna array elements (300); the eight antenna array elements (300) are arranged in a ring around the axis of the support cylinder (200) and connected in sequence to form a closed ring structure. The multiple ring antenna array elements increase the radiation surface of the antenna, which helps to increase the frequency band of the antenna and make the antenna array have broadband characteristics.

2. The high-temperature resistant conformal broadband antenna according to claim 1, characterized in that, The antenna array element (300) includes a mounting plate (303), an antenna base (304), and a protective cover (305); The antenna base (304) is mounted on the mounting plate (303); the protective cover (305) is mounted on the mounting plate (303) and covers the antenna base (304) inside it.

3. The high-temperature resistant conformal broadband antenna according to claim 2, characterized in that, An air layer is left between the antenna substrate (304) and the protective cover (305) to insulate against external heat.

4. The high-temperature resistant conformal broadband antenna according to claim 2, characterized in that, Sealant is applied to the gaps between the protective cover (305) and the mounting plate (303) and between the protective cover (305) and the antenna base (304) to achieve airtightness of each antenna element (300).

5. The high-temperature resistant conformal broadband antenna according to any one of claims 2 to 4, characterized in that, The antenna substrate (304) includes a flexible circuit radiating plate (306) and a foam support (307), wherein the flexible circuit radiating plate (306) is attached to the foam support (307).

6. The high-temperature resistant conformal broadband antenna according to claim 5, characterized in that, The top and bottom surfaces of the foam support (307) are each designed with two relief grooves for applying sealant (308).

7. The high-temperature resistant conformal broadband antenna according to claim 5, characterized in that, The protective cover (305) is made of polyimide material; and the foam support (307) is made of high-temperature resistant foam.

8. The high-temperature resistant conformal broadband antenna according to claim 1, characterized in that, Multiple mounting ears (201) are provided on the outer periphery of the support cylinder (200), and multiple grooves (101) are formed at the bottom of the adapter (100) corresponding to the mounting ears (201). The mounting lug (201) is embedded in the groove (101) and connected to the groove (101) by a fastener (102) to realize the assembly between the support cylinder (200) and the adapter (100).

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