阅读说明：本技术 一种用于超长口径的可伸缩模块化柱面天线 (Telescopic modular cylindrical antenna for ultra-long caliber ) 是由 马小飞 黄志荣 郑士昆 朱佳龙 王辉 赵将 李洋 杨斌 于 2019-08-30 设计创作，主要内容包括：一种用于超长口径的可伸缩模块化柱面天线,属于天线技术领域。本发明提供的超长口径的可伸缩模块化柱面天线由多个具有独立波束扫描能力的单元组成,每个单元结构完成相同,每个单元收拢直径为Ф3350mm,收拢高度500mm,展开后天线口径为10m,具有较高收纳比,通过不同数量单元的组合配置,多个单元在空间进行展开,可以实现不同口径柱面天线的需求,在卫星和运载火箭包络尺寸范围内,天线口径可达百米级。(A telescopic modular cylindrical antenna for an ultra-long caliber belongs to the technical field of antennas. The ultra-long-caliber telescopic modular cylindrical antenna provided by the invention is composed of a plurality of units with independent beam scanning capability, the structure of each unit is the same, the furled diameter of each unit is phi 3350mm, the furled height is 500mm, the caliber of the antenna after being unfolded is 10m, the antenna has a high storage ratio, the plurality of units are unfolded in space through the combined configuration of different numbers of units, the requirements of cylindrical antennas with different calibers can be realized, and the caliber of the antenna can reach hundreds of meters within the envelope size range of satellites and carrier rockets.)

1. A scalable modular cylinder antenna for overlength bore which characterized in that: comprises a plurality of antenna units; each antenna unit comprises a columnar net surface reflector (1), a stretching truss (2) and a feed source array (3);

the extension truss (2) is of a prismatic structure and is used for installing the columnar net surface reflector (1) and the feed source array (3) and driving the antenna unit to expand in length direction;

the columnar net surface reflector (1) is hinged with one edge of the extension truss (2) and is driven to rotate, fold and unfold by a motor;

the feed source array (3) is hinged with the other edge of the stretching truss (2), is driven to rotate, fold and unfold by a motor and is used for carrying a feed source;

the columnar net surface reflectors (1) of the adjacent antenna units are in telescopic connection, the extension trusses (2) of the adjacent antenna units are in telescopic connection, and the feed source arrays (3) of the adjacent antenna units are in telescopic connection.

2. The retractable modular cylinder antenna for ultra-long apertures of claim 1, wherein: the columnar net surface reflector (1) comprises folding ribs (4), folding telescopic arms (5) and a cable net system (6); one end of the folding rib (4) is arranged on one edge of the extending truss (2); the folding telescopic arms (5) are arranged along the cylindrical surface generatrix direction of the cable net system (6) and have the same edge direction with the extending truss (2); the folding ribs (4) are arranged at two ends of the folding telescopic arm (5) and are driven by a motor to fold, extend, fold and furl in a cylindrical surface base line plane of the cable net system (6); the cable net system (6) is installed by taking the folding ribs (4) and the folding telescopic arms (5) as supports, and is driven by the folding ribs (4) to extend and contract in the base line direction, and driven by the folding telescopic arms (5) to extend and contract in the bus direction.

3. The retractable modular cylinder antenna for ultra-long apertures of claim 2, wherein: the folding ribs (4) are provided with a plurality of folding joints, and when the folding ribs (4) extend or contract, the folding ribs (4) are unfolded or contracted and laminated in a W shape or an inverted W shape in a cylindrical surface baseline plane of the cable net system (6); providing cylindrical baseline directional support for the rigging system (6) when the folding ribs (4) are fully deployed.

4. The retractable modular cylinder antenna for ultra-long apertures of claim 2, wherein: the folding telescopic arm (5) is hollow inside, and the hollow part is used for accommodating the adjacent forward folding telescopic arm (5); when the folding telescopic arm (5) is extended or contracted, the folding telescopic arm (5) extends out of or contracts into the adjacent backward folding telescopic arm (5) from the other folding telescopic arm (5) containing the folding telescopic arm.

5. The retractable modular cylinder antenna for ultra-long apertures of claim 4, wherein: the folding telescopic arm (5) comprises two sections of hollow-wall pipes; one end of each of the two sections of hollow wall pipes is hinged with the folding rib (4), and a wall pipe folding joint for hinging is arranged between the other ends of the two sections of hollow wall pipes; in the process of folding the antenna, when the two sections of hollow wall pipes are completely retracted into the hollow part of the outermost layer of hollow wall pipe, the folding joints of the wall pipes are folded and folded; the unfolding process is the reverse process of folding.

6. The retractable modular cylinder antenna for ultra-long apertures of claim 2, wherein: the folding ribs (4) are arranged in the cylindrical baseline plane of the cable net system (6), and the folding telescopic arms (5) are arranged in the cylindrical bus direction of the cable net system (6).

7. The retractable modular cylinder antenna for ultra-long apertures of claim 1, wherein: the stretching truss (2) is provided with a plurality of support structure folding joints, and when the support structure (2) stretches or contracts, the support structure (2) is unfolded or contracted and stacked at the support structure folding joints according to a V shape.

8. The retractable modular cylinder antenna for ultra-long apertures of claim 1, wherein: the feed source array (3) is provided with a plurality of feed source array folding joints, and when the feed source array (3) is extended or contracted, the feed source array (3) is extended or contracted and laminated at the feed source array folding joints according to a W shape or an inverted W shape.

9. The retractable modular cylinder antenna for ultra-long apertures of claim 1, wherein: the extension truss (2) is unfolded into a prism structure such as a triangular prism.

Technical Field

The invention relates to a telescopic modular cylindrical antenna for an ultra-long caliber, and belongs to the technical field of satellite-borne antennas.

Background

In order to meet the requirements of satellite application backgrounds such as space-based moving target monitoring and the like on a satellite-borne SAR antenna with a new system, a large satellite-borne deployable antenna in the form of a hectometer-level cylindrical reflector and a phased array feed source is required, and the length of the antenna is required to be expanded according to the requirements. The currently widely used form of satellite-borne large-scale deployable antenna mainly includes a loop-shaped deployable antenna, an umbrella-shaped deployable antenna and a framework-type deployable antenna.

The annular deployable antenna is suitable for a 10-30 m-caliber deployable satellite-borne antenna, only has the functions of folding and unfolding the reflector, cannot be folded and unfolded by the feed source, and is not suitable for the application requirement of a cylindrical antenna with an expandable length; the umbrella-shaped deployable antenna is in a form of a parabolic deployable reflector antenna suitable for a 4-10 m caliber, can only realize folding and unfolding of the parabolic reflector, cannot fold and unfold the feed source, and is not suitable for the application requirement of a cylindrical antenna with an expandable length; the framework type expandable antenna can realize furling and expanding of the cylindrical reflector, but can only be expanded in a size range of 4-10 meters, and does not have the furling and expanding function of the phased array feed source.

Disclosure of Invention

The technical problem solved by the invention is as follows: the defects of the prior art are overcome, the telescopic modular cylindrical antenna for the ultra-long aperture is provided, the design of multi-dimensional unfolding of the antenna with a high storage ratio, the design of a large-scale extensible cylindrical reflector, the design of an extensible truss with high size and high rigidity and the design of a multi-folding feed array are developed, and the smooth unfolding of the cylindrical antenna with the ultra-large aperture of one hundred meters in space is realized under the requirements of ensuring the multi-dimensional coordination unfolding of the antenna, the unfolding of the reflector to-place molded surface precision and the high flatness of the feed source.

The technical solution of the invention is as follows: a telescopic modular cylindrical antenna for an ultra-long caliber comprises a plurality of antenna units; each antenna unit comprises a columnar net surface reflector, a stretching truss and a feed source array;

the extension truss is of a prismatic structure and is used for installing the columnar net surface reflector and the feed source array and driving the antenna unit to expand in length direction;

the columnar net surface reflector is hinged with one edge of the extension truss and is driven to rotate, fold and unfold by a motor;

the feed source array is hinged with the other edge of the stretching truss, is driven to rotate, fold and unfold by a motor and is used for carrying a feed source;

the columnar net surface reflectors of the adjacent antenna units are in telescopic connection, the extension trusses of the adjacent antenna units are in telescopic connection, and the feed source arrays of the adjacent antenna units are in telescopic connection.

Further, the cylindrical mesh surface reflector comprises folding ribs, folding telescopic arms and a cable net system; one end of the folding rib is arranged on one edge of the extending truss; the folding telescopic arms are arranged along the generatrix direction of the cylindrical surface of the cable net system and have the same direction with the edge direction of the stretching truss; the folding ribs are arranged at two ends of the folding telescopic arm and are driven by the motor to fold, extend, fold and furl in the cylindrical surface baseline plane of the cable net system; the cable net system is installed by taking the folding ribs and the folding telescopic arms as supports, and achieves extension and contraction in the base line direction under the driving of the folding ribs and achieves extension and contraction in the bus direction under the driving of the folding telescopic arms.

Furthermore, a plurality of folding joints are arranged on the folding ribs, and when the folding ribs are expanded or contracted, the folding ribs are expanded or contracted and laminated in a W shape or an inverted W shape in the cylindrical surface baseline plane of the cable net system; providing cylindrical baseline directional support for the netting system when the folding ribs are fully deployed.

Further, the folding telescopic arm is hollow inside, and the hollow part is used for accommodating the adjacent forward folding telescopic arm; when the folding telescopic arm is extended or contracted, the folding telescopic arm extends out of or contracts into the adjacent backward folding telescopic arm from the other folding telescopic arm containing the folding telescopic arm.

Further, the folding telescopic arm comprises two sections of hollow-wall pipes; one end of each of the two sections of hollow wall pipes is hinged with the folding rib, and a wall pipe folding joint for hinging is arranged between the other ends of the two sections of hollow wall pipes; in the process of folding the antenna, when the two sections of hollow wall pipes are completely retracted into the hollow part of the outermost layer of hollow wall pipe, the folding joints of the wall pipes are folded and folded; the unfolding process is the reverse process of folding.

Further, the folding ribs are arranged in a cylindrical surface baseline plane of the cable net system, and the folding telescopic arms are arranged in the cylindrical surface generatrix direction of the cable net system.

Furthermore, a plurality of support structure folding joints are arranged on the extension truss, and when the support structure extends or contracts, the support structure is unfolded or contracted and stacked at the support structure folding joints according to a V shape.

Furthermore, a plurality of feed source array folding joints are arranged on the feed source array, and when the feed source array is expanded or contracted, the feed source array is expanded or contracted and laminated at the feed source array folding joints according to a W shape or an inverted W shape.

Further, the extension truss is unfolded into a prism structure such as a triangular prism.

Compared with the prior art, the invention has the advantages that:

1. the invention realizes the folding and unfolding of the hectometer-level space-borne antenna through the high-storage-ratio multi-dimensional unfolding design;

2. the invention realizes the expansion of the length and the size of the cylindrical antenna by the modular design of the expandable cylindrical reflector, the stretching truss and the phased array feed source;

3. the phased array feed source folding and unfolding function is realized through the design of the multi-folding feed source.

Drawings

FIG. 1 is a schematic diagram of the fully deployed state and composition of the antenna of the present invention;

FIG. 2 is a schematic diagram of a partial antenna unit according to the present invention;

FIG. 3 is a schematic side view of an antenna according to the present invention;

FIG. 4 is a schematic view of the cylindrical mesh reflector of the present invention;

FIG. 5 is a schematic view of the construction of the truss extension of the present invention;

FIG. 6 is a schematic view of a feed array of the present invention;

FIG. 7 is a schematic view of the antenna of the present invention in a fully collapsed state;

FIG. 8 is a schematic representation of the invention at step 1 after deployment;

FIG. 9 is a schematic representation of the invention after step 2 deployment;

FIG. 10 is a schematic representation of the invention in step 3 after deployment;

FIG. 11 is a schematic diagram of the semi-deployed state of the 4 th step of the deployment operation of the present invention.

Detailed Description

As shown in fig. 1 and 3, a telescopic modular cylindrical antenna for an ultra-long aperture is characterized in that the antenna is composed of a plurality of antenna units with independent beam scanning capability, each antenna unit has the same structure, the folded diameter of each antenna unit is phi 3350, the folded height is 500mm, the length of the unfolded antenna is 10m, and the antenna has a higher storage ratio. Through the combined configuration of different numbers of antenna units, a plurality of antenna units are unfolded in space, the requirements of antennas with different calibers can be met, and the calibers of the antennas can reach a hundred-meter level within the envelope size range of satellites and carrier rockets. The embodiment antenna is composed of ten antenna elements, and the length of the antenna after expansion is 100 m.

The invention comprises a plurality of antenna units; each antenna unit comprises a columnar net surface reflector 1, an extension truss 2 and a feed source array 3; the extension truss 2 is of a prismatic structure and is used for installing the columnar net surface reflector 1 and the feed source array 3 and driving the antenna unit to be unfolded; the columnar net surface reflector 1 is hinged with one edge of the extension truss 2 and is driven to rotate, fold and unfold by a motor; the feed source array 3 is hinged with the other edge of the stretching truss 2, is driven to rotate, fold and unfold by a motor and is used for carrying a feed source; the columnar net surface reflectors 1 of the adjacent antenna units are in telescopic connection, the extension trusses 2 of the adjacent antenna units are in telescopic connection, and the feed source arrays 3 of the adjacent antenna units are in telescopic connection. Specifically, as shown in fig. 2, each antenna unit is mainly composed of three major parts, namely, a stretching truss 2, a cylindrical mesh reflector 1 and a feed array 3. The stretching truss 2 is a main power source for driving the whole antenna to be unfolded, is used for driving the cylindrical surface mesh reflector 1 and the feed source array 3 to be unfolded along the direction of a cylindrical surface bus, and provides support for the whole antenna structure after being unfolded; the cylindrical mesh reflector 1 mainly provides support for the cable net system 6; the feed source array 3 mainly carries feed sources.

The columnar net surface reflector 1 comprises folding ribs 4, folding telescopic arms 5 and a cable net system 6; one end of the folding rib 4 is arranged on one edge of the extension truss 2; the folding telescopic arms 5 are arranged along the cylindrical surface generatrix direction of the cable net system 6 and have the same direction with the edge direction of the stretching truss 2; the folding ribs 4 are arranged at two ends of the folding telescopic arm 5 and are driven by a motor to fold, extend, fold and furl in a cylindrical surface base line plane of the cable net system 6; the cable net system 6 is installed by taking the folding ribs 4 and the folding telescopic arms 5 as supports, and is driven by the folding ribs 4 to extend and contract in the base line direction, and driven by the folding telescopic arms 5 to extend and contract in the bus direction.

As shown in fig. 4, the cylindrical mesh reflector 1 is composed of folding ribs 4, folding telescopic arms 5 and a rigging system 6. The folding ribs 4 are provided with a plurality of folding joints, and when the folding ribs 4 extend or contract, the folding ribs 4 are unfolded or contracted and laminated in a W shape or an inverted W shape in the cylindrical surface base line plane of the cable net system 6; providing cylindrical baseline directional support for the netting system 6 when the folding ribs 4 are fully deployed. The folding telescopic arm 5 is hollow inside, and the hollow part is used for accommodating the adjacent forward folding telescopic arm 5; when the folding telescopic arm 5 is extended or contracted, the folding telescopic arm 5 is extended or contracted from another folding telescopic arm 5 accommodating itself into the adjacent rearward folding telescopic arm 5. The folding telescopic arm 5 comprises two sections of hollow-wall pipes; one end of each of the two sections of hollow wall pipes is hinged with the folding rib 4, and a wall pipe folding joint for hinging is arranged between the other ends of the two sections of hollow wall pipes; in the process of folding the antenna, when the two sections of hollow wall pipes are completely retracted into the hollow part of the outermost layer of hollow wall pipe, the folding joints of the wall pipes are folded and folded; the unfolding process is the reverse process of folding. The folding ribs 4 are arranged in a cylindrical baseline plane of the cable net system 6, and the folding telescopic arms 5 are arranged in the cylindrical generatrix direction of the cable net system 6. The unfolding structure consisting of the folding ribs 4 and the folding telescopic arms 5 provides support for the cable net system 6 and influences the surface accuracy of the cylindrical reflecting surface of the metal net of the reflector cable net system 6; meanwhile, the cylindrical surface base line direction of the cable net system 6 is folded and unfolded, the cable net system is driven by a motor, and the folding ribs 4 are driven to fold and unfold; the cable net system 6 is driven by the stretching truss 2 to unfold in the bus direction, and the folding telescopic arm 5 drives the cable net to unfold in a follow-up manner. Each unit of the cylindrical mesh reflector 1 is 10 meters; the cable net system 6 comprises a tension cable net and a metal net, the cable net system 6 is connected with an unfolding structure consisting of the folding ribs 4 and the folding telescopic arms 5 through cables and supporting rods, and an expected metal net cylindrical surface is formed through cable net tension after the cable net system is unfolded in place.

The extension truss 2 is provided with a plurality of support structure folding joints, and when the support structure 2 extends or contracts, the support structure 2 is unfolded or contracted and laminated at the support structure folding joints according to a V shape. The expansion truss 2 is expanded into a prism structure such as a triangular prism. As shown in fig. 5, the extension truss 2 is a triangular prism structure, and can extend and contract along the prism axis direction; each unit is 10 meters in length and consists of 4 sections of foldable prisms, each section is 2.5 meters in length and comprises 5 triangular frames, and adjacent frames are hinged through folding rods; after the truss is completely folded, the adjacent triangular frames are tightly attached to each other, so that minimum folded envelope is achieved; the expansion truss 2 provides expansion power in the cylindrical bus direction for the antenna in the expansion process, and drives the cylindrical mesh reflector 1 and the feed source array 3 to expand; after the triangular frame is unfolded in place, the triangular frame moves to a designed distance and is supported and connected by the straightened folding rods, and the formed prism structure provides structural support for the antenna, so that the relative geometric relationship between the cylindrical mesh reflector 1 connected to the stretching truss 2 and the feed source array is ensured.

The feed source array 3 is provided with a plurality of feed source array folding joints, and when the feed source array 3 extends or contracts, the feed source array 3 is unfolded or contracted and laminated at the feed source array folding joints according to a W shape or an inverted W shape. As shown in fig. 6, each unit of the feed source array 3 is divided into four sub-boards, each sub-board is 2.5m in structure, and the sub-boards are hinged by adopting the feed source.

Each antenna element has a spread length of 10 meters and comprises a unit of the extended truss 2, a 10 meter long cylindrical mesh reflector 2 unit and a 10 meter long feed unit. The extension truss 2 unit comprises four foldable prisms; the reflector unit comprises two folding ribs 4, a folding telescopic arm 5 and a 10m cable net system, wherein the two folding ribs 4 are connected by the folding telescopic arm 5 to form a structure for providing support for the cable net system 6; each unit feed source array 3 is divided into four same sub-plates, and adjacent sub-plates are hinged to form three hinged shafts. In order to ensure the unfolding coordination, one end of each unfolding rib 4 of the reflector unit is hinged with the vertex of the triangular frame at the two ends of the same edge of the expansion truss unit, and each unit has two hinged points; the two ends and the most middle hinged point of the feed source array 3 unit are hinged with the two ends and the most middle three triangular frame vertexes on the same edge of the expansion truss unit, and each unit has three hinged points. In the process of folding and unfolding the antenna, the cylindrical mesh reflector 1 and the feed source array 3 can be unfolded and folded in a rotating mode around the seamed edge hinged with the stretching truss 2; in the process of unfolding the antenna unit in the direction of the cylindrical surface generatrix, the feed source daughter board can be pulled open in a W shape by the unfolding power of the stretching truss 2.

The requirements of antennas with different calibers can be met through the combined configuration of the units with different numbers, the expansion capability is strong, and the antenna is particularly suitable for ultra-long calibers.

Compared with the prior art, the invention realizes the folding and unfolding of the hectometer-level space-borne antenna through the high-storage-ratio multi-dimensional unfolding design; the length and size of the cylindrical antenna are expanded through modular design; the phased array feed source is folded and unfolded through the design of the multi-folding feed source, and the phased array feed source is suitable for the ultra-long-caliber cylindrical antenna.

The unfolding process of the invention is as follows: (a) the feed source array 3 of the folded antenna (shown in figure 7) rotates around the edge of the extension truss 2 to be unfolded, and the unfolded state is shown in figure 8; (b) the cylindrical mesh reflector 1 in a folded state rotates around the edge of the extension truss 2 to be unfolded, and the unfolded state is shown in fig. 9; (c) the cylindrical surface mesh reflector 1 is unfolded in the baseline direction, the phased array feed source 3 in a folded state rotates around the edge of the extension truss 2 again, and the unfolded state is shown in figure 10; (d) the antenna is unfolded along the direction of a cylindrical bus of the antenna under the driving of the stretching truss 2, the cylindrical mesh reflector 1 and the feed source array 3 are synchronously unfolded in a follow-up mode, the half-unfolding state of the unfolding action is shown in figure 11, and the state of the antenna after being completely unfolded is shown in figure 1. The folding process of the antenna is divided into 4 steps in the same way, and is the reverse process of the unfolding action.

Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.