CN115000668A - Antenna capable of switching omnidirectional and directional radiation through unfolding and rolling - Google Patents
Antenna capable of switching omnidirectional and directional radiation through unfolding and rolling Download PDFInfo
- Publication number
- CN115000668A CN115000668A CN202210740625.6A CN202210740625A CN115000668A CN 115000668 A CN115000668 A CN 115000668A CN 202210740625 A CN202210740625 A CN 202210740625A CN 115000668 A CN115000668 A CN 115000668A
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- antenna
- composite material
- medium substrate
- material medium
- bistable composite
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- 230000005855 radiation Effects 0.000 title claims abstract description 20
- 238000005096 rolling process Methods 0.000 title claims abstract description 20
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 239000002131 composite material Substances 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 239000002657 fibrous material Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 238000003892 spreading Methods 0.000 claims abstract description 4
- 230000007480 spreading Effects 0.000 claims abstract description 4
- 239000003365 glass fiber Substances 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011208 reinforced composite material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Images
Classifications
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- 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
- H01Q1/085—Flexible aerials; Whip aerials with a resilient base
- H01Q1/087—Extensible roll- up aerials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
An antenna capable of switching omnidirectional and directional radiation through unfolding and rolling relates to an antenna. The fiber material layer adopts 45 degrees/45 degrees along the axial direction of the antenna] n The bistable composite material medium substrate is formed by alternately layering and combining resin materials to be glued, cured and molded, the bistable composite material medium substrate is of a band-shaped structure in a spreading state and is provided with curvature in the bandwidth direction, the bistable composite material medium substrate is of a cylindrical structure in a rolling state, the metal conducting layer is laid on the outer side surface of the bistable composite material medium substrate, and the SMA joint is welded and fixed with the bistable composite material medium substrate and one end of the metal conducting layer. The foldable solar cell module can be converted into two stable configurations, has omnidirectional and directional radiation characteristics in the unfolding and rolling states, and is simple in structure, light and easy to store.
Description
Technical Field
The invention relates to an antenna, in particular to an antenna capable of switching omnidirectional and directional radiation through unfolding and rolling, and belongs to the technical field of antenna design.
Background
With the development requirements of the mobile communication and satellite communication fields, light, small-volume and omnidirectional antennas are paid more and more attention and are applied. The light weight has very important effect on the field of satellite communication, and the requirement on the storage volume of the antenna is strict in the satellite transmitting stage. In addition, the omnidirectional antenna is widely applied in the communication field, is stable in the process of receiving and transmitting signals, has wide signal coverage and has smaller blind areas.
At present, scholars at home and abroad have a great deal of research on deployable and storable antennas, and the shape of the structure is changed mainly through the characteristics of an intelligent structure. The granted announcement number is CN206134948U, the name is a Chinese utility model patent of a high-receiving-rate light deployable antenna, the structure is made into a yagi type antenna through a plurality of antenna arms, the directional radiation function of antenna signals is realized, the receiving function can be realized by folding the plurality of antenna arms to a supporting arm, and the whole volume of the antenna is reduced; the invention discloses a Chinese patent with an issued publication number of CN107994313B and a name of a high-rigidity and high-storage-ratio antenna unfolding mechanism, wherein the unfolding and the storage processes are realized by rotating a motor of a motor and a strip-shaped antenna sheet, the antenna is pushed outwards when the motor rotates forwards to be in an unfolding working state, and the antenna is wound and stored in a cylindrical state when the motor rotates backwards.
Although the antenna adopts different mechanical structures to realize the storage and the expansion of the antenna and the omnidirectional or directional propagation of radiation signals, the mechanism form is complex, and the advantage in weight is not obvious.
Disclosure of Invention
In order to solve the defects in the background art, the invention provides the antenna capable of switching between omnidirectional radiation and directional radiation through unfolding and rolling, which can be converted into two stable configurations, has omnidirectional and directional radiation characteristics in the unfolding and rolling states, and is simple in structure, light in weight and easy to store.
In order to achieve the purpose, the invention adopts the following technical scheme:
an antenna capable of switching omnidirectional and directional radiation through unfolding and rolling comprises a resin material layer, a fiber material layer, a metal conducting layer and an SMA joint, wherein the fiber material layer adopts [45 °/-45 ° ] along the axial direction of the antenna] n The bistable composite material medium substrate is formed by alternately layering and combining the resin material, gluing, curing and molding, wherein n is more than or equal to 2, and the bistable composite materialThe material medium substrate comprises two stable configurations, the material medium substrate is of a belt-shaped structure in an unfolding state and is provided with curvature in the bandwidth direction, the material medium substrate is of a cylindrical structure in a rolling state, the metal conducting layer is laid on the outer side surface of the bistable composite material medium substrate, and the SMA joint is fixedly welded with the bistable composite material medium substrate and one end of the metal conducting layer.
Compared with the prior art, the invention has the beneficial effects that: the bistable composite material dielectric substrate has two stable configurations of a belt shape in an unfolding state and a cylinder shape in a rolling state, is convenient for converting the antenna configuration, has an omnidirectional radiation characteristic in the unfolding state, has a directional radiation characteristic in the rolling state, has the advantages of simple structure, light weight, high strength and small storage volume, and has higher application value in the fields of mobile communication and satellite communication.
Drawings
Fig. 1 is a schematic cross-sectional view of an antenna of the present invention;
fig. 2 is a schematic view of the antenna of the present invention in an unfolded state;
fig. 3 is a schematic diagram of a rolling state of the antenna of the present invention;
FIG. 4 is a S11 return loss curve of configuration I of the antenna in the example;
fig. 5 is a pattern diagram of the configuration I of the antenna in the embodiment;
fig. 6 is an S11 return loss curve of configuration II of the antenna in the embodiment;
fig. 7 is a pattern diagram of configuration II of the antenna in the embodiment.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
As shown in fig. 1 to 3, an antenna capable of switching omnidirectional and directional radiation by spreading and rolling comprises a resin material 1, a fiber material layer 2, a metal conductive layer 3 and an SMA joint 4.
The fiber material layer 2 adopts [45 °/-45 ° ] along the axial direction of the antenna] n The bistable composite material medium substrate is formed by alternately layering and gluing and curing the resin material 1, wherein n is more than or equal to 2, the resin material 1 preferably adopts epoxy resin, the fiber material layer 2 preferably adopts glass fiber or carbon fiber, the preparation process preferably adopts a vacuum autoclave process, so that the bistable composite material medium substrate comprises two stable configurations, the stable configurations comprise a band-shaped structure in a spreading state and curvature in the bandwidth direction, the curvature is determined according to the fiber material and the required layering thickness, the stable configurations are cylindrical in a rolling state, the metal conducting layer 3 is paved on the outer side surface of the bistable composite material medium substrate and preferably integrally cured with the bistable composite material medium substrate, and the SMA joint 4 is welded and fixed with the bistable composite material medium substrate and one end of the metal conducting layer 3.
The bistable composite material dielectric substrate can be changed under two stable configurations under the action of external bending moment, the structure can keep an unfolding or rolling state when external force is removed, the structure is a strip-shaped omnidirectional monopole antenna in the unfolding state, and the structure is a cylindrical directional antenna in the rolling state.
Examples
In the embodiment, the bistable composite material dielectric substrate is made of a glass fiber reinforced composite material, the working frequency is 103MHz/6.6GHz, and the electromagnetic simulation software is used for carrying out size optimization design and simulation calculation on the structure. The antenna configuration I is an unfolded state, the length is 1 meter, the thickness is 0.3mm, and the curvature in the bandwidth direction is represented by a central angle of 145 degrees and a diameter of 30 mm. Referring to the S11 return loss curve of configuration I shown in FIG. 4, it can be seen that the antenna has a center frequency of 103MHz and a bandwidth of 8.9MHz in the deployed state of configuration I. Referring to fig. 5, which shows the directional diagram of the configuration I, it can be seen that the directional diagram of the antenna is elliptical-like under the configuration I, and the omnidirectional radiation is shown. The bending of the structure can be changed into a rolling state of the antenna configuration II by applying bending moment to the edge of the antenna configuration I, and the antenna configuration I is cylindrical with the diameter of 40mm and the height of 40 mm. Referring to the S11 return loss curve of configuration II shown in fig. 6, it can be seen that the center frequency of the antenna in the rolled state of configuration II is 6.6GHz, and the bandwidth is 580 MHz. Referring to the pattern of configuration II shown in fig. 7, it can be seen that the antenna exhibits directional radiation in configuration II with a maximum gain of 8.5dB and a 3dB beamwidth of 65 °.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. An antenna capable of switching between omnidirectional and directional radiation through unfolding and rolling is characterized in that: the antenna comprises a resin material (1), a fiber material layer (2), a metal conductive layer (3) and an SMA joint (4), wherein the fiber material layer (2) adopts [45 °/-45 ° ] along the axial direction of the antenna] n The bistable composite material medium substrate is formed by alternately layering and combining the resin material (1) to be glued, cured and molded into a bistable composite material medium substrate, wherein n is more than or equal to 2, the bistable composite material medium substrate comprises two stable configurations, the bistable composite material medium substrate is of a band-shaped structure in a spreading state and is provided with curvature in the bandwidth direction, the bistable composite material medium substrate is of a cylindrical structure in a rolling state, and the metal conducting layer (3) is paved on the outer surface of the bistable composite material medium substrateThe SMA joint (4) is fixedly welded with one end of the bistable composite material medium substrate and one end of the metal conducting layer (3).
2. An antenna switchable between omnidirectional and directional radiation by deployment and retraction, as claimed in claim 1, wherein: and the metal conducting layer (3) and the bistable composite material medium substrate are integrally cured and molded.
3. An antenna switchable between omnidirectional and directional radiation by deployment and retraction, as claimed in claim 1, wherein: the resin material (1) is epoxy resin.
4. An antenna switchable between omnidirectional and directional radiation through unfolding and folding as claimed in claim 1, wherein: the fiber material layer (2) adopts glass fiber or carbon fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210740625.6A CN115000668A (en) | 2022-06-27 | 2022-06-27 | Antenna capable of switching omnidirectional and directional radiation through unfolding and rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210740625.6A CN115000668A (en) | 2022-06-27 | 2022-06-27 | Antenna capable of switching omnidirectional and directional radiation through unfolding and rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115000668A true CN115000668A (en) | 2022-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210740625.6A Pending CN115000668A (en) | 2022-06-27 | 2022-06-27 | Antenna capable of switching omnidirectional and directional radiation through unfolding and rolling |
Country Status (1)
| Country | Link |
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| CN (1) | CN115000668A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140636A (en) * | 2015-09-18 | 2015-12-09 | 哈尔滨工业大学 | Wearable omnidirectional/directional pattern reconfigurable antenna |
| CN107093796A (en) * | 2017-05-18 | 2017-08-25 | 哈尔滨工业大学 | Directional diagram reconstructable micro-strip Quasi-Yagi antenna in a kind of pitching face |
-
2022
- 2022-06-27 CN CN202210740625.6A patent/CN115000668A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140636A (en) * | 2015-09-18 | 2015-12-09 | 哈尔滨工业大学 | Wearable omnidirectional/directional pattern reconfigurable antenna |
| CN107093796A (en) * | 2017-05-18 | 2017-08-25 | 哈尔滨工业大学 | Directional diagram reconstructable micro-strip Quasi-Yagi antenna in a kind of pitching face |
Non-Patent Citations (1)
| Title |
|---|
| 郭祥伟: "双稳态复合材料柱壳单极天线结构设计与分析", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》, 15 March 2022 (2022-03-15), pages 1 - 76 * |
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