CN115241638B - Light and thin rectifying antenna integrated with solar thin film battery in coplanar mode - Google Patents
Light and thin rectifying antenna integrated with solar thin film battery in coplanar mode Download PDFInfo
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- CN115241638B CN115241638B CN202210724885.4A CN202210724885A CN115241638B CN 115241638 B CN115241638 B CN 115241638B CN 202210724885 A CN202210724885 A CN 202210724885A CN 115241638 B CN115241638 B CN 115241638B
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- film battery
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- 239000010409 thin film Substances 0.000 title claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 38
- 230000005855 radiation Effects 0.000 claims abstract description 15
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 239000000523 sample Substances 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims 1
- 239000000470 constituent Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 7
- 239000002131 composite material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920007790 polymethacrylimide foam Polymers 0.000 description 1
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
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- 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
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/285—Aircraft wire antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a light and thin rectifying antenna which is integrated with a solar thin film battery in a coplanar way, comprising at least one antenna unit; each antenna unit comprises a second dielectric plate, and a rectifying circuit is arranged at the lower end of the second dielectric plate; the upper surface of the second dielectric plate is sequentially provided with a rectifying circuit metal ground and an antenna metal ground; a first dielectric plate is arranged above the antenna metal ground; the upper surface of the first dielectric plate is provided with an antenna radiation layer and a solar thin film battery in sequence. According to the invention, the solar thin film battery is adhered to the metal sheet on the front surface of the microwave receiving antenna, so that the coplanar integration of the antenna and the solar thin film battery is realized, the antenna constituent units are all made of light and thin materials, the front surface is made of large-area metal except rectangular gaps, and the installation area of the solar thin film battery is ensured. The invention can receive microwaves and solar energy simultaneously, has higher stability and more selectivity, thereby ensuring the energy supply of air equipment such as unmanned aerial vehicles, airships and the like or equipment in other scenes.
Description
Technical Field
The invention relates to the field of antennas, in particular to a light and thin rectifying antenna which is integrated with a solar thin film battery in a coplanar mode.
Background
With rapid development of times and technologies, electronic products have been integrated into people's daily lives. The electric energy is not separated from the life of human beings, and the use of the electric energy is inevitably accompanied by the energy loss of a transmission line, so that the wired energy transmission mode is greatly restrained and limited once the application scene is limited or the environment is severe, and therefore, the wireless energy transmission is proposed under the application requirement. When the microwave wireless energy transmission technology is applied to energy transmission in the special fields of aerial equipment such as unmanned aerial vehicles, airships and the like, the rectifying antenna is used as a key of a receiving part of a microwave wireless energy transmission system, and the performance of the rectifying antenna is also required, so that the high microwave receiving rectifying efficiency is required, and the characteristics of light weight and low profile are also required.
Aiming at the current situation that a large number of unmanned aerial vehicles and airship surfaces are provided with solar film batteries, the common-caliber surface composite design of the solar film batteries and a microwave rectifying antenna is researched, so that composite receiving of microwave energy and solar energy is achieved.
Disclosure of Invention
Aiming at the defects in the prior art, the light and thin rectifying antenna which is integrated with the solar thin film battery in a coplanar manner realizes the composite reception of microwave energy and solar energy.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
Providing a light and thin rectifying antenna which is integrated with a solar thin film battery in a coplanar manner, wherein the light and thin rectifying antenna comprises at least one antenna unit; each antenna unit comprises a second dielectric plate, and a rectifying circuit is arranged at the lower end of the second dielectric plate; the upper surface of the second dielectric plate is sequentially provided with a rectifying circuit metal ground and an antenna metal ground; a first dielectric plate is arranged above the antenna metal ground; an antenna radiation layer and a solar thin film battery are sequentially arranged on the upper surface of the first dielectric plate;
Rectangular gaps are arranged in the antenna radiation layer; a capacitive coupling metal sheet for coupling energy to the antenna radiation layer is arranged below the first dielectric plate and serves as a first feed port; the lower end of the capacitive coupling metal sheet is connected to the rectifying circuit through a metal probe; the output end of the rectifying circuit is the output end of the whole antenna.
Further, a foam layer is disposed between the first dielectric plate and the antenna metal ground.
Further, the rectifying circuit comprises a T-shaped microstrip line, the T-shaped microstrip line is connected with a second feed port, and the second feed port is connected with the lower end of the metal probe; the T-shaped microstrip line is connected with the double-sector filter through the rectifier diode, and the output end of the double-sector filter is the output end of the rectifier circuit.
Further, the length and width of the first dielectric plate of the single antenna unit are 42.05mm and 40.6mm, respectively; the length and width of the first dielectric plate and the antenna radiation layer are respectively smaller than or equal to the length and width of the first dielectric plate of the single antenna unit.
Further, the length and width of the rectangular gap are 41.1mm and 4mm respectively; the length of the center of the rectangular gap from the edge of the first dielectric plate is 14.1mm;
further, the length and width of the capacitively coupled metal sheet were 8mm and 2.5mm, respectively.
Further, the radius of one sector of the double sector filter is 6.2mm, and the radius of the other sector is 3.6mm; the two sectors are concentric, and the central angles of the two sectors are 90 degrees.
Further, the number of antenna units is n×m, and the n×m array is formed, and the n×m antenna units are integrally formed.
The beneficial effects of the invention are as follows: the invention can receive microwaves and solar energy simultaneously, and has higher stability and more selectivity compared with the traditional single energy supply mode, thereby ensuring the energy supply of air equipment such as unmanned aerial vehicles, airships and the like or equipment in other scenes.
Drawings
Fig. 1 is a schematic diagram of a hierarchical structure of a single antenna element;
Fig. 2 is a top view of a single antenna element;
fig. 3 is a top view of a 2x 2 array of 4 antenna elements;
FIG. 4 is a schematic diagram of a rectifying circuit;
fig. 5 is a schematic diagram of return loss S11 of the antenna in the embodiment;
Fig. 6 is an E-plane and H-plane antenna pattern in an embodiment;
fig. 7 is a graph showing the result of measuring the rectifying efficiency of the rectifying antenna microwave receiving of the integrated solar thin film battery.
Wherein: 1. a solar thin film battery; 2. an antenna radiation layer; 3. a first dielectric plate; 4. a foam layer; 5. antenna metal ground; 6. a rectifying circuit is grounded; 7. a second dielectric plate; 8. a rectifying circuit; 9. a capacitively coupled metal sheet; 10. a metal probe; 11. an antenna unit; 12. a double sector filter; 13. a rectangular slit; 14. a second power supply port; 15. a T-type microstrip line; 16. and a rectifier diode.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and all the inventions which make use of the inventive concept are protected by the spirit and scope of the present invention as defined and defined in the appended claims to those skilled in the art.
As shown in fig. 1,2 and 3, the thin and lightweight rectenna co-planar with the solar thin film battery comprises at least one antenna element 11; each antenna unit 11 comprises a second dielectric plate 7, and a rectifying circuit 8 is arranged at the lower end of the second dielectric plate 7; the upper surface of the second dielectric plate 7 is sequentially provided with a rectifier circuit metal ground 6 and an antenna metal ground 5; a first dielectric plate 3 is arranged above the antenna metal ground 5; the upper surface of the first dielectric plate 3 is sequentially provided with an antenna radiation layer 2 and a solar thin film battery 1;
A rectangular slot 13 is arranged in the antenna radiation layer 2; a capacitive coupling metal sheet 9 for coupling energy to the antenna radiation layer 2 is arranged below the first dielectric plate 3, and the capacitive coupling metal sheet 9 is used as a first feed port; the lower end of the capacitive coupling metal sheet 9 is connected to the rectifying circuit 8 through a metal probe 10; the output of the rectifying circuit 8 is the output of the whole antenna.
A foam layer 4 is arranged between the first dielectric plate 3 and the antenna metal ground 5. The foam layer 4 may employ PMI foam.
As shown in fig. 4, the rectifying circuit 8 includes a T-shaped microstrip line 15, the T-shaped microstrip line 15 is connected to a second power supply port 14, and the second power supply port 14 is connected to the lower end of the metal probe 10; the T-type microstrip line 15 is connected to the double-sector filter 12 through a rectifier diode 16, and the output end of the double-sector filter 12 is the output end of the rectifier circuit 8.
In one embodiment of the present invention, the antenna elements 11 may be n×m, and form an n×m array, and n×m antenna metallic grounds 5 are integrally formed.
In the specific implementation process, taking a2×2 array as an example, the length and width of the first dielectric plate 3 of the single antenna unit 11 are 42.05mm and 40.6mm respectively; the length and width of the first dielectric plate 3 and the antenna radiation layer 2 are respectively equal to or smaller than the length and width of the first dielectric plate 3 of the single antenna unit 11. The length and width of the rectangular slit 13 are 41.1mm and 4mm respectively; the center of the rectangular slit 13 is 14.1mm from the edge length of the first dielectric plate 3; the length and width of the capacitively coupled metal sheet 9 are 8mm and 2.5mm, respectively. The radius of one sector of the double sector filter 12 is 6.2mm and the radius of the other sector is 3.6mm; the two sectors are concentric, and the central angles of the two sectors are 90 degrees. For light and thin performance, the first dielectric sheet 3 may employ a Rogers5880 substrate of 0.127mm, the thickness of the foam layer 4 is set to 1mm, and the thickness of the antenna radiation layer 2 is set to 0.05mm. The second dielectric sheet 7 may be a Rogers5880 substrate having a thickness of only 0.19 mm. The solar thin film battery 1 can be manufactured into an integrated amorphous silicon solar thin film battery (the thickness is 0.147 m) by using epoxy conductive adhesive. The rectifier diode 16 may be of the type BAT15-03W. The overall dimensions of the antenna were 84.1mm x 81.2mm x 1.362mm. As shown in FIG. 5, the antenna is optimized by adopting a planar inverted F antenna structure, the active |S11| of the antenna is-16.75 dBi at 5.8GHz, is smaller than-10 dB in the frequency band of 5.65-5.85GHz, and has a relative bandwidth of 3.48%. As shown in fig. 6, the maximum gain is 14.96dBi on the antenna E and H surfaces, indicating that the present antenna has high gain and high aperture efficiency.
In another embodiment of the present invention, a microwave wireless energy transmission experiment is performed using a 4×4 array as an example, as shown in fig. 7 (in which the abscissa indicates power, the left ordinate indicates output voltage, and the right ordinate indicates conversion efficiency), so as to obtain the microwave receiving rectification efficiency of the final integrated solar thin film battery rectifying antenna as 65.2%.
In summary, the main working frequency of the invention is 5.8GHz, the thickness of the invention can be 1.362mm, the invention has the light and thin characteristics, the invention adopts a planar inverted F antenna structure, capacitive coupling feeding is realized by loading a metal rectangular sheet on the top of a feeding probe, and a resonant mode is excited by etching a rectangular slot on a dielectric substrate.
Claims (7)
1. A light and thin rectenna integrated coplanar with a solar thin film battery, characterized by comprising at least one antenna element (11); each antenna unit (11) comprises a second dielectric plate (7), and a rectifying circuit (8) is arranged at the lower end of the second dielectric plate (7); the upper surface of the second dielectric plate (7) is sequentially provided with a rectifying circuit metal ground (6) and an antenna metal ground (5); a first dielectric plate (3) is arranged above the antenna metal ground (5); an antenna radiation layer (2) and a solar thin film battery (1) are sequentially arranged on the upper surface of the first dielectric plate (3);
A rectangular slot (13) is arranged in the antenna radiation layer (2); a capacitive coupling metal sheet (9) for coupling energy to the antenna radiation layer (2) is arranged below the first dielectric plate (3), and the capacitive coupling metal sheet (9) is used as a first feed port; the lower end of the capacitive coupling metal sheet (9) is connected to the rectifying circuit (8) through a metal probe (10); the output end of the rectifying circuit (8) is the output end of the whole antenna;
the rectifying circuit (8) comprises a T-shaped microstrip line (15), one short side end of the T-shaped microstrip line (15) is connected with a second feed port (14), and the second feed port (14) is connected with the lower end of the metal probe (10); the node of the T-shaped microstrip line (15) is connected with the double-sector filter (12) through the rectifier diode (16), and the output end of the double-sector filter (12) is the output end of the rectifier circuit (8).
2. The thin and light rectenna co-planar with solar thin film battery according to claim 1, characterized in that a foam layer (4) is arranged between the first dielectric plate (3) and the antenna metal ground (5).
3. The thin and light rectenna co-planar with solar thin film battery according to claim 1, characterized in that the length and width of the first dielectric plate (3) of the single antenna unit (11) is 42.05mm and 40.6mm, respectively; the length and width of the first dielectric plate (3) and the antenna radiation layer (2) are respectively smaller than or equal to the length and width of the single antenna unit (11).
4. A thin and light rectenna co-planar with a solar thin film cell according to claim 3, characterized in that the rectangular slot (13) has a length and width of 41.1mm and 4mm respectively; the center of the rectangular slit (13) is 14.1mm from the edge length of the first dielectric plate (3).
5. The thin and light rectenna co-planar with a solar thin film cell according to claim 1, characterized in that the length and width of the capacitively coupled metal sheet (9) are 8mm and 2.5mm, respectively.
6. The thin and light rectenna co-planar with solar thin film cells of claim 1 wherein one sector of the dual sector filter (12) has a radius of 6.2mm and the other sector has a radius of 3.6mm; the two sectors are concentric, and the central angles of the two sectors are 90 degrees.
7. The thin and light rectenna co-planar with a solar thin film battery according to any of claims 1-6, wherein the antenna elements (11) are n x m and form an n x m array, and the n x m antenna metallic grounds (5) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210724885.4A CN115241638B (en) | 2022-06-24 | 2022-06-24 | Light and thin rectifying antenna integrated with solar thin film battery in coplanar mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210724885.4A CN115241638B (en) | 2022-06-24 | 2022-06-24 | Light and thin rectifying antenna integrated with solar thin film battery in coplanar mode |
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| Publication Number | Publication Date |
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| CN115241638A CN115241638A (en) | 2022-10-25 |
| CN115241638B true CN115241638B (en) | 2024-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210724885.4A Active CN115241638B (en) | 2022-06-24 | 2022-06-24 | Light and thin rectifying antenna integrated with solar thin film battery in coplanar mode |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116454595B (en) * | 2023-06-13 | 2023-08-18 | 安徽大学 | Solar antenna unit and array |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767027A (en) * | 2015-03-17 | 2015-07-08 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Micro-strip difference rectification antenna based on WIFI frequency band |
| CN106981717A (en) * | 2017-02-16 | 2017-07-25 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | A kind of dual polarization RECTIFYING ANTENNA of compact wide power input |
| CN110380205A (en) * | 2019-07-17 | 2019-10-25 | 北京科技大学 | A kind of PIFA based on multi-resonant mode |
| CN111326864A (en) * | 2020-03-13 | 2020-06-23 | 天津大学 | Coupling differential feed double compression mode patch antenna and solar cell integration |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8115683B1 (en) * | 2008-05-06 | 2012-02-14 | University Of South Florida | Rectenna solar energy harvester |
| US8698681B2 (en) * | 2010-04-21 | 2014-04-15 | City University Of Hong Kong | Solar energy collection antennas |
| WO2015168272A1 (en) * | 2014-04-29 | 2015-11-05 | The Regents Of The University Of Michigan | Flexible antenna integrated with an array of solar cells |
| CN104538725B (en) * | 2014-11-28 | 2017-03-29 | 西安电子科技大学 | The transmitting antenna system of Wireless power transmission |
| CN113410635A (en) * | 2021-06-28 | 2021-09-17 | 集芯微科技(浙江)有限公司 | Integrated self-powered relay blind-repairing device |
| CN114498948A (en) * | 2022-01-24 | 2022-05-13 | 西安电子科技大学 | Hybrid energy collector based on radio frequency and solar energy |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767027A (en) * | 2015-03-17 | 2015-07-08 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Micro-strip difference rectification antenna based on WIFI frequency band |
| CN106981717A (en) * | 2017-02-16 | 2017-07-25 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | A kind of dual polarization RECTIFYING ANTENNA of compact wide power input |
| CN110380205A (en) * | 2019-07-17 | 2019-10-25 | 北京科技大学 | A kind of PIFA based on multi-resonant mode |
| CN111326864A (en) * | 2020-03-13 | 2020-06-23 | 天津大学 | Coupling differential feed double compression mode patch antenna and solar cell integration |
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| CN115241638A (en) | 2022-10-25 |
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