CN107946727A - Expandable type disc-shaped antenna system and its method of deploying - Google Patents
Expandable type disc-shaped antenna system and its method of deploying Download PDFInfo
- Publication number
- CN107946727A CN107946727A CN201711397489.0A CN201711397489A CN107946727A CN 107946727 A CN107946727 A CN 107946727A CN 201711397489 A CN201711397489 A CN 201711397489A CN 107946727 A CN107946727 A CN 107946727A
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- antenna
- rod
- box
- spokes
- spiral rod
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- 238000000034 method Methods 0.000 title claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 6
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229920002530 polyetherether ketone Polymers 0.000 claims description 4
- 241001267494 Microdes Species 0.000 claims 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
- H01Q1/10—Telescopic elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1235—Collapsible supports; Means for erecting a rigid antenna
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Support Of Aerials (AREA)
- Details Of Aerials (AREA)
Abstract
The invention discloses a kind of expandable type disc-shaped antenna system and its method of deploying, it is by designing rational internal and external screw mechanism and foldable flexible antenna surface, so that antenna system ensures that antenna is stored in antenna box in a folded fashion before antenna open instructions is received, after system receives antenna open instructions, internal and external screw mechanism urges antenna module smoothly skids off antenna box and is unfolded outside antenna box, realizes the opening in whole flexible antennas face.
Description
Technical Field
The invention relates to the field of antennas, in particular to an expandable disc-shaped antenna system and an expansion method thereof.
Background
The micro-nano satellite has the characteristics of small volume, light weight and the like, an antenna system carried by one micro-nano satellite also needs to be small in volume and light weight, a Doppler type antenna system is generally adopted in a communication system of the micro-nano satellite at present, and the transmitting power of the Doppler type antenna system is limited by the size of a power supply system and an antenna on the satellite, so that high requirements are provided for a ground signal receiving device; in addition, because the gain of the doppler antenna system is small, its reception sensitivity puts high demands on the low-noise amplification system of the satellite communication system and the ground transmitting device. This limits the application of micro-nano satellites in some fields, such as communication field.
Disclosure of Invention
Based on this, there is a need for an expandable dish antenna system for a micro/nano satellite and an expansion method thereof.
An expandable disc antenna system comprises an antenna box, a driving device, a transmission device and an antenna assembly, wherein the driving device and the transmission device are arranged in the antenna box, the transmission device comprises an inner spiral rod, an outer spiral rod and a sliding block, the inner spiral rod is connected with the driving device, the outer spiral rod is in threaded connection with the inner spiral rod, and the sliding block is sleeved outside the outer spiral rod and is in threaded connection with the outer spiral rod; the driving device can drive the inner spiral rod to lift and rotate relative to the antenna box, when the inner spiral rod rotates, the outer spiral rod can rotate relative to the inner spiral rod to lift or rotate to descend, and the sliding block can lift or descend relative to the outer spiral rod; the antenna assembly comprises a plurality of antenna face spokes, a plurality of antenna support spokes and a flexible antenna face, wherein the plurality of antenna face spokes are radially distributed around the outer helical rod, and the plurality of antenna support spokes respectively correspond to the plurality of antenna face spokes and are radially distributed around the outer helical rod; each antenna surface spoke is fixed on the flexible antenna surface, and one end of each antenna surface spoke is connected with the sliding block; one end of each antenna supporting spoke is hinged with the corresponding antenna surface spoke, and the other end of each antenna supporting spoke is hinged with an outer spiral rod on one side of the sliding block, which is far away from the driving device; the flexible antenna face can form an umbrella-shaped structure under the support of the plurality of antenna face spokes; the antenna assembly can be folded and contained in the antenna box, and can extend out or retract into the antenna box under the driving of the driving device.
In one embodiment, the antenna box is a rectangular frame structure, and a plurality of side supporting spokes respectively connected with two sides of the rectangular frame structure are arranged on the side of the rectangular frame structure.
In one embodiment, the deployable dish antenna system further comprises a mechanical rotation compartment, and the driving device is disposed in the mechanical rotation compartment.
In one embodiment, the mechanical rotating cabin is provided with a micro D signal interface and a radio frequency SMA interface.
In one embodiment, the power supply device further comprises a power supply unit, and the power supply unit is arranged at the top end of the external spiral rod.
In one embodiment, the outer helical rod and the inner helical rod are hollow structures, and the feeder line of the feed unit is connected with a communication system of a satellite through the hollow structures.
In one embodiment, the antenna case is provided with a plurality of assembly holes through which the expandable dish antenna system is connected to the satellite.
In one embodiment, the antenna support spokes are made of a PEEK material.
In one embodiment, the antenna supporting spoke is connected with the outer spiral rod through a connecting piece, the connecting piece is fixed on the outer spiral rod and is arranged in parallel with a rotating shaft of the outer spiral rod, and the antenna supporting spoke is hinged with the connecting piece.
A method of deploying the deployable dish antenna system, comprising:
before being unfolded, the inner spiral rod and the outer spiral rod are both lowered to the bottom, the sliding block is located at the bottom of the outer spiral rod, and the antenna assembly is folded and accommodated in the antenna box;
when the antenna assembly needs to be unfolded, the driving device drives the inner spiral rod to ascend and rotate, so that the outer spiral rod rotates and ascends, and the sliding block ascends, and the antenna assembly is pushed out of the antenna box and is unfolded outside the antenna box;
when the antenna assembly needs to be retracted, the driving device drives the inner screw rod to descend and rotate reversely.
According to the expandable disc antenna system, the antenna assembly can be contained in the antenna box, the transmission device of the inner and outer rotating rod mechanisms can reduce the weight of the whole antenna system and the volume of the whole antenna system before emission, and therefore the expandable disc antenna system can be applied to a micro-nano satellite. The expandable dish antenna system can be loaded on the satellite through the antenna box, and when the satellite enters the outer space scheduled orbit, the antenna component can extend out of the antenna box and is completely expanded outside the antenna box under the action of the driving device and the transmission device, so that a high-gain dish antenna is formed. In addition, the antenna assembly can be extended and retracted by controlling the rotation direction of the inner screw rod, so that the test and the transportation are convenient.
According to the invention, through the reasonably designed internal and external spiral mechanisms and the foldable flexible antenna surface, the antenna system ensures that the antenna is stored in the antenna box in a folding manner before receiving an antenna opening instruction, and after the system receives the antenna opening instruction, the internal and external spiral mechanisms push the antenna assembly to smoothly slide out of the antenna box and unfold outside the antenna box, so that the whole flexible antenna surface is opened.
Drawings
Fig. 1 is a schematic perspective view of an expandable dish antenna system according to the present invention;
FIG. 2 is a schematic top view of a mechanical rotating chamber according to the present invention;
FIG. 3 is a schematic view of the connection structure of the outer spiral rod and the antenna supporting spokes according to the present invention;
wherein,
10-an antenna box; 110-a frame structure; 120-lateral support spokes; 130-assembly holes;
20-mechanical rotating cabin; 210-a micro D signal interface; 220-radio frequency SMA interface;
30-a transmission; 310-internal screw rod; 320-external screw rod; 330-a slide block;
40-a feeding unit;
50-an antenna assembly; 510-antenna face spokes; 520-antenna support spokes; 530-flexible antenna face.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below by way of embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 3, the present invention provides an expandable dish antenna system, which includes an antenna housing 10, a driving device (not shown), a transmission device 30 and an antenna assembly 50. The driving means may be provided in the antenna box 10.
The transmission 30 may include an inner helical rod 310, an outer helical rod 320, and a slider 330. The inner screw rod 310 may be connected with the driving means. The outer screw rod 320 may be screw-coupled with the inner screw rod 310. The sliding block 330 can be sleeved outside the external screw rod 320 and is in threaded connection with the external screw rod 320. The driving device can drive the inner screw rod 310 to move up and down and rotate relative to the antenna box 10. When the inner screw 310 is rotated, the outer screw 320 is rotated up or rotated down with respect to the inner screw 310, and the slider 330 is rotated up or down with respect to the outer screw 320.
The antenna assembly 50 may include a plurality of antenna face spokes 510, a plurality of antenna support spokes 520, and a flexible antenna face 530. The plurality of antenna face spokes 510 may be radially distributed around the outer helical rod 320. The plurality of antenna support spokes 520 may correspond to the plurality of antenna face spokes 510 one-to-one and be radially distributed around the outer screw 320. Each of the antenna face spokes 510 is fixed to the flexible antenna face 530 and has one end connected to the slider 330. Each of the antenna supporting spokes 520 has one end hinged to the corresponding antenna surface spoke 510 and the other end hinged to the outer spiral rod 320 at a side of the slider 330 away from the driving device. The flexible antenna face 530 can form an umbrella structure supported by the plurality of antenna face spokes 510. The antenna assembly 50 can be folded and contained in the antenna box 10, and can be extended or retracted into the antenna box 10 under the driving of the driving device 30.
Before the antenna system is not deployed, the inner helical rod 310 and the outer helical rod 320 are both lowered to the bottom, and the sliding block 330 is located at the bottom of the outer helical rod 320; the antenna assembly 50 is folded and housed in the antenna case 10. When the antenna assembly 50 needs to be unfolded, the driving device drives the inner spiral rod 310 to rotate, so that the outer spiral rod 320 rotates and ascends, and the sliding block 330 ascends, so that the antenna assembly 50 is pushed out of the antenna box 10 and is unfolded outside the antenna box 10. When the antenna assembly 50 needs to be retracted, the driving device drives the inner screw rod 310 to rotate reversely. When the inner spiral rod 310 rotates, a force for rotating the outer spiral rod 320 relative to the antenna box 10 is generated, and when the outer spiral rod 320 rotates relative to the antenna box 10, a force for rotating the slider 330 relative to the antenna box 10 is also generated, however, due to a certain rotational resistance between the antenna assembly 50 connected to the slider 330 and the antenna box 10, the slider 330 is prevented from rotating relative to the antenna box 10, so that the slider 330 is raised or lowered relative to the outer spiral rod 320, and the rotational speed of the outer spiral rod 320 is reduced, so that the outer spiral rod 320 rotates up or down relative to the inner spiral rod 310.
According to the expandable disc antenna system provided by the invention, the antenna assembly 50 can be accommodated in the antenna box 10, and the transmission device of the internal and external rotating rod mechanism can reduce the weight of the whole antenna system and the volume of the whole antenna system before emission, so that the expandable disc antenna system can be applied to a micro-nano satellite. The deployable dish antenna system can be loaded onto a satellite through the antenna box 10, and when the satellite enters the outer space predetermined orbit, the antenna assembly 50 can be extended out of the antenna box 10 and fully deployed outside the antenna box 10 under the action of the driving device and the transmission device 30, so that a high-gain dish antenna is formed. In addition, the antenna assembly 50 can be extended and retracted by controlling the rotation direction of the inner screw rod 310, which facilitates testing and transportation.
The antenna case 10 may have at least one opening to enable the antenna assembly 50 to extend out of the antenna case 10. Preferably, the antenna box 10 is a frame structure, and the weight of the antenna box 10 of the frame structure is lighter. In an embodiment, the antenna box 10 includes a rectangular frame structure 110, a plurality of lateral supporting spokes 120 are disposed on a lateral side of the rectangular frame structure 110, and each of the lateral supporting spokes 120 is respectively connected to two sides of the rectangular frame structure 110, so that the mechanical structure of the antenna box 10 is more stable, and the whole antenna system is ensured to meet the stress requirement of transmission. The antenna box 10 may further have a plurality of assembly holes 130 formed therein, and the antenna system may be assembled with the satellite through the plurality of assembly holes 130. The antenna face spokes 510 may contact the top of the rectangular frame structure 110 when the antenna assembly 50 is in an undeployed state for providing rotational resistance between the slider 330 and the antenna case 10.
The deployable dish antenna system may further comprise a mechanical rotation compartment 20, and the driving device may be disposed in the mechanical rotation compartment 20. Referring to fig. 2, the mechanical rotating cabin 20 may be provided with a micro d signal interface 210 for controlling a satellite and connecting a power system. The satellite can send a signal to a driving device disposed in the mechanical rotation cabin 20 through the micro signal interface 210 to control the lifting and the rotation of the inner screw 310. The mechanical rotating cabin 20 may further be provided with a radio frequency SMA interface 220.
The drive means may be a motor. The motor may be connected to the inner screw rod 310, and is configured to drive the inner screw rod 310 to ascend and descend and rotate. By changing the direction of rotation of the motor, deployment and retraction of the antenna assembly 50 may be achieved.
The expandable dish antenna system may further include a feeding unit 40. The feeding unit 40 may be disposed on the top of the outer screw 320, and when the inner screw 310 and/or the outer screw 320 is lifted, the feeding unit 40 may be extended out of the antenna box 10. Preferably, when the inner screw rod 310 is raised to the bottom, the feeding unit 40 is extended out of the antenna box 10. The inner spiral rod 310 and the outer spiral rod 320 may both be hollow structures, and a feeder line of the feed unit 40 may be connected to the radio frequency SMA interface 220 through the hollow structures, so as to implement connection with a communication system of a micro/nano satellite. One end of the antenna supporting spoke 520 may be disposed on the outer spiral rod 320 between the feeding unit 40 and the slider 330.
The antenna face spokes 510 and the antenna support spokes 520 together form an umbrella-shaped skeleton structure of the antenna assembly. The antenna face spokes 510 may be made of a metal material with elasticity to ensure the rigidity and elasticity of the antenna face spokes 510. The antenna support spokes 520 serve to support the antenna face spokes 510 to maintain the umbrella structure when the antenna assembly 50 is deployed. The antenna supporting spoke 520 may be made of a material having a self-lubricating effect and no microwave interference, such as PEEK (polyetheretherketone) material, which has the characteristics of light weight, self-lubricating property, reliable structure, and strong bearing capacity.
Referring to fig. 3, in one embodiment, the antenna support spokes 520 are connected to the outer helical rod 320 by connecting pieces 522. The connection piece 522 may be fixed to the outer screw rod 320 and disposed parallel to a rotation axis of the outer screw rod 320, and the antenna support spoke 520 may be hinged to the connection piece 522. Further, the connecting piece 522 may be fixed on a connecting cylinder 524, and the connecting cylinder 524 may be fixed on the external screw rod 320 to fix the connecting piece 522 to the external screw rod 320.
According to the invention, through the reasonably designed internal and external spiral mechanisms and the foldable flexible antenna surface, the antenna system ensures that the antenna is stored in the antenna box in a folding manner before receiving an antenna opening instruction, and after the system receives the antenna opening instruction, the internal and external spiral mechanisms push the antenna assembly to smoothly slide out of the antenna box and unfold outside the antenna box, so that the whole flexible antenna surface is opened.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An expandable dish antenna system, comprising an antenna box, a driving device, a transmission device and an antenna assembly, wherein the driving device and the transmission device are arranged in the antenna box,
the transmission device comprises an inner screw rod, an outer screw rod and a sliding block, the inner screw rod is connected with the driving device, the outer screw rod is in threaded connection with the inner screw rod, and the sliding block is sleeved outside the outer screw rod and is in threaded connection with the outer screw rod;
the driving device can drive the inner spiral rod to lift and rotate relative to the antenna box, when the inner spiral rod rotates, the outer spiral rod can rotate relative to the inner spiral rod to lift or rotate to descend, and the sliding block can lift or descend relative to the outer spiral rod;
the antenna assembly comprises a plurality of antenna face spokes, a plurality of antenna support spokes and a flexible antenna face, wherein the plurality of antenna face spokes are radially distributed around the outer helical rod, and the plurality of antenna support spokes respectively correspond to the plurality of antenna face spokes and are radially distributed around the outer helical rod; each antenna surface spoke is fixed on the flexible antenna surface, and one end of each antenna surface spoke is connected with the sliding block; one end of each antenna supporting spoke is hinged with the corresponding antenna surface spoke, and the other end of each antenna supporting spoke is hinged with an outer spiral rod on one side of the sliding block, which is far away from the driving device; the flexible antenna face can form an umbrella structure under support of the plurality of antenna face spokes;
the antenna assembly can be folded and contained in the antenna box, and can extend out or retract into the antenna box under the driving of the driving device.
2. The deployable dish antenna system of claim 1, wherein the antenna box is a rectangular frame structure, and the sides of the rectangular frame structure are provided with a plurality of side supporting spokes connected to two sides of the rectangular frame structure, respectively.
3. The deployable dish antenna system of claim 1, further comprising a mechanical rotation compartment, the drive device being disposed within the mechanical rotation compartment.
4. The deployable dish antenna system of claim 3, wherein the mechanical rotation pod is provided with a MicroD signal interface and a radio frequency SMA interface.
5. The deployable dish antenna system of claim 1, further comprising a feed unit disposed at a top end of the outer helical rod.
6. The deployable dish antenna system of claim 5, wherein the outer helical rod and the inner helical rod are hollow structures, and the feeder line of the feed unit is connected to a communication system of a satellite through the hollow structures.
7. The expandable dish antenna system of claim 1, wherein a plurality of mounting holes are provided on the antenna case, and the expandable dish antenna system is connected to the satellite through the plurality of mounting holes.
8. The deployable dish antenna system of claim 1, wherein the antenna support spokes are made of PEEK material.
9. The deployable dish antenna system of claim 1, wherein the antenna support spoke is connected to the outer helical rod by a connection piece, the connection piece being fixed to the outer helical rod and being arranged parallel to the axis of rotation of the outer helical rod, the antenna support spoke being hinged to the connection piece.
10. A method of deploying an expandable dish antenna system as claimed in any one of claims 1 to 9, comprising:
before being unfolded, the inner spiral rod and the outer spiral rod are both lowered to the bottom, the sliding block is located at the bottom of the outer spiral rod, and the antenna assembly is folded and accommodated in the antenna box;
when the antenna assembly needs to be unfolded, the driving device drives the inner spiral rod to rotate, so that the outer spiral rod rotates and ascends, and the sliding block ascends, so that the antenna assembly is pushed out of the antenna box and is unfolded outside the antenna box;
when the antenna assembly needs to be retracted, the driving device drives the inner spiral rod to rotate reversely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397489.0A CN107946727B (en) | 2017-12-21 | 2017-12-21 | Expandable dish antenna system and expansion method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397489.0A CN107946727B (en) | 2017-12-21 | 2017-12-21 | Expandable dish antenna system and expansion method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107946727A true CN107946727A (en) | 2018-04-20 |
| CN107946727B CN107946727B (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711397489.0A Active CN107946727B (en) | 2017-12-21 | 2017-12-21 | Expandable dish antenna system and expansion method thereof |
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| CN (1) | CN107946727B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109713420A (en) * | 2018-12-29 | 2019-05-03 | 长沙天仪空间科技研究院有限公司 | A kind of extensible paraballon in space |
| CN110120576A (en) * | 2019-05-11 | 2019-08-13 | 西安电子科技大学 | A kind of umbrella antenna unfolding mechanism that fixed shaft gear train is combined with lead screw |
| CN113131172A (en) * | 2021-04-06 | 2021-07-16 | 北京理工大学 | Rope-driven foldable umbrella-shaped antenna |
| CN113161710A (en) * | 2021-03-26 | 2021-07-23 | 上海卫星工程研究所 | Spatial expandable mesh antenna with profile precision capable of being adjusted in orbit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109713420A (en) * | 2018-12-29 | 2019-05-03 | 长沙天仪空间科技研究院有限公司 | A kind of extensible paraballon in space |
| CN110120576A (en) * | 2019-05-11 | 2019-08-13 | 西安电子科技大学 | A kind of umbrella antenna unfolding mechanism that fixed shaft gear train is combined with lead screw |
| CN113161710A (en) * | 2021-03-26 | 2021-07-23 | 上海卫星工程研究所 | Spatial expandable mesh antenna with profile precision capable of being adjusted in orbit |
| CN113131172A (en) * | 2021-04-06 | 2021-07-16 | 北京理工大学 | Rope-driven foldable umbrella-shaped antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107946727B (en) | 2023-10-27 |
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