CN113410635A - Integrated self-powered relay blind-repairing device - Google Patents
Integrated self-powered relay blind-repairing device Download PDFInfo
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- CN113410635A CN113410635A CN202110721862.3A CN202110721862A CN113410635A CN 113410635 A CN113410635 A CN 113410635A CN 202110721862 A CN202110721862 A CN 202110721862A CN 113410635 A CN113410635 A CN 113410635A
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- 230000010354 integration Effects 0.000 claims abstract 2
- 229910052751 metal Inorganic materials 0.000 claims description 32
- 239000002184 metal Substances 0.000 claims description 32
- 230000005855 radiation Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 6
- 230000010287 polarization Effects 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 230000001629 suppression Effects 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
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- 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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
The application discloses blind device is mended in integration self-power relay, includes: the circuit board comprises a first layer circuit board, a second layer circuit board, a third layer circuit board, a fourth layer circuit board, a fifth layer circuit board and a sixth layer circuit board, wherein the first layer circuit board, the second layer circuit board, the third layer circuit board, the fourth layer circuit board, the fifth layer circuit board and the sixth layer circuit board are sequentially arranged downwards. The invention relates to a wireless signal relay blind-repairing device adopting an integrated self-powered scheme; the solar panels on the first layer of circuit board and the sixth layer of circuit board can respectively collect outdoor photovoltaic energy and indoor photovoltaic energy, and the slot antenna 1 can also collect outdoor microwave energy; the relay module can collect wireless energy in various forms and store the wireless energy for self-power supply of the relay module, has the advantages of light weight, low power consumption and self-power supply compared with the traditional relay blind-repairing scheme, can be randomly placed according to the requirement, and really achieves no dead angle coverage.
Description
Technical Field
The invention belongs to the technical field of relay blind-repairing devices, and relates to an integrated self-powered relay blind-repairing device.
Background
As the 5G era comes and a huge number of small base stations are required, new relay manufacturing leads to all 5G base stations having to be redesigned and manufactured, which requires a huge amount of capital, resulting in an increase in the use cost of the users. Meanwhile, the frequency of the 5G signal is high, and the signal coverage area of a single base station is small, so that a lot of signal blind areas can be caused. The blind areas need to be subjected to targeted signal relaying and blind area compensation. A low-cost blind-repairing device has a huge market prospect.
With the carbon peak-to-peak carbon neutralization development targets proposed by the nation, the development of electronic devices towards low power consumption has become a great trend. The existing relay blind-repairing equipment needs an external power supply, has high power consumption, needs a large amount of arrangement and does not meet the requirement of low-green development. Meanwhile, in the traditional relay scheme, the transmitting and receiving antenna needs to be placed inside and outside a house in a distributed mode and needs an external power supply, so that a very complex wiring scheme is caused, and the traditional relay scheme is inflexible and high in cost.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides an integrated self-powered relay blind-repairing device, realizes the advantages of light weight, low power consumption and self power supply, can be randomly placed according to the requirement, and really realizes no dead angle coverage.
In order to achieve the purpose, the invention adopts the technical scheme that:
an integrated self-powered relay blind-supplementary device, comprising: the circuit board comprises a first layer of circuit board, a second layer of circuit board, a third layer of circuit board, a fourth layer of circuit board, a fifth layer of circuit board and a sixth layer of circuit board, wherein the first layer of circuit board, the second layer of circuit board, the third layer of circuit board, the fourth layer of circuit board, the fifth layer of circuit board and the sixth layer of circuit board are sequentially arranged downwards; a solar cell panel 1 covers the first layer of circuit board, an antenna feeder 1 and an antenna feeder 2 are printed and manufactured at the same time, the antenna feeder 1 is connected with the relay circuit module, and the antenna feeder 2 is connected with the self-powered circuit module; a metal slot antenna 1 is printed and manufactured above the second layer of circuit board; a double-frequency high-impedance surface is printed and manufactured above the third layer of circuit board, and a metal floor is manufactured below the third layer of circuit board; the first, second and third layers of circuit boards jointly form a slot antenna 1 loaded with a high-impedance surface; the fourth layer of circuit board and the third layer of circuit board are symmetrically arranged relative to the metal floor; the fifth layer circuit board and the second layer circuit board are symmetrically arranged relative to the metal floor, and the metal structures manufactured on the fifth layer circuit board and the second layer circuit board are the same; the sixth layer of circuit board and the first layer of circuit board are symmetrically arranged relative to the metal floor, a solar panel 2 covers the lower part of the sixth layer of circuit board and an antenna feeder 3 is printed and manufactured; the fourth, fifth and sixth layers of circuit boards jointly form a slot antenna 2 loaded with a high-impedance surface; the slot antenna 1 and the slot antenna 2 are electrically connected through a coaxial line structure formed by the metalized through hole 1 and the metalized through hole 2.
Further, the relay circuit module performs relay amplification and noise suppression on the received signal; and transmits the signal to the slot antenna 2 through the coaxial line structure formed by the metallized through hole 1 and the metallized through hole 2 and forwards the signal.
Furthermore, the solar cell panel 1 and the solar cell panel 2 are pasted outside the radiation opening surface of the slot antenna, so that the radiation performance of the slot antenna is not influenced; the slot antenna 1 and the slot antenna 2 adopt microstrip line coupling feed, and two feed ports of the slot antenna 1 are respectively formed into two polarization directions of left rotation and right rotation.
Further, the antenna feeder 1 is used for transmitting communication signals and is connected to the relay circuit module; the antenna feeder 2 is used for collecting microwave energy and transmitting the microwave energy to the self-power circuit module for rectification, and the aperture sharing of the slot antenna 1 is realized.
Further, the solar cell panel 1, the solar cell panel 2 and the antenna feeder 2 are connected to a self-power circuit module, and the self-power circuit module provides a direct current power supply for the relay circuit module.
Furthermore, the self-powered circuit module comprises a microwave rectifying circuit, a power supply voltage stabilizing circuit, a battery and a power supply controller, and can be used for simultaneously collecting and storing photovoltaic energy and microwave energy and supplying power to the relay circuit module as a direct-current power supply.
Further, the frequencies of the slot antennas 1 and 2 cover the frequencies of 4G and 5G communication.
Furthermore, a double-frequency high-impedance surface is printed and manufactured on the third layer of circuit board and used for reducing the profile of the antenna, and the center frequency of the double-frequency high-impedance surface is 2.4GHz and 3.5 GHz. The high-impedance surface is formed by periodically arranging and forming metal square rings and metal squares, the reflection phase of two frequency points of 2.4GHz and 3.5GHz is 0 degree, and the reflection phase of the middle frequency of the two frequency points is near 0 degree.
Furthermore, a metal floor is prepared below the third layer of circuit board, and the metal floor can provide signal shielding and simultaneously realize the dual functions of 0-degree reflection phase by matching with a high-impedance surface.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the slot antenna 1 adopts microstrip line coupling feed, and two feed ports are provided, so that two polarization directions of left rotation and right rotation are respectively formed. The antenna feeder 1 is connected to the relay circuit module to realize a signal transmission function. The antenna feeder 2 is used as a microwave energy collecting port and is transmitted to the self-powered circuit module for rectification, the antenna aperture is shared, and different functions are realized.
(2) The high-impedance surface loading slot antenna can realize the unidirectional radiation of the antenna, improve the gain of the antenna and realize the isolation of the receiving and transmitting antenna.
(3) The relay module can collect indoor and outdoor photovoltaic energy and outdoor microwave energy at the same time, stores the photovoltaic energy and the outdoor microwave energy for self-power of the relay module, and has all-weather energy collection and self-power supply capabilities, light weight and flattening compared with the traditional relay blind-repairing scheme. Can be placed at will according to the demand, really accomplish no dead angle and cover.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic general structure diagram of an integrated self-powered relay blind-repairing device of the present invention;
FIG. 2 is a schematic diagram of a layer of an integrated self-powered relay blind-repairing apparatus according to the present invention;
FIG. 3 is a block diagram of an integrated self-powered relay blind-fill apparatus of the present invention;
FIG. 4 is a detailed view of various parts of the integrated self-powered relay blind-repairing apparatus of the present invention;
fig. 5 is an application scenario diagram of the integrated self-powered relay blind-repairing device according to the present invention.
Detailed Description
As shown in fig. 1 to 5, the present invention is manufactured by using a 6-layer circuit board, and can realize self power supply and relay amplification and forwarding of signals, so as to achieve the function of signal blindness compensation. The device can be attached to any glass or wall, receives signals through the antenna facing the outward face of the building, amplifies the signals, forwards the signals through the antenna facing the interior of the building after noise suppression processing, and can realize relay blind compensation of the signals without extra power supply.
The invention discloses an integrated self-powered relay blind-repairing device, which comprises: the circuit board comprises a first layer of circuit board, a second layer of circuit board, a third layer of circuit board, a fourth layer of circuit board, a fifth layer of circuit board and a sixth layer of circuit board, wherein the first layer of circuit board, the second layer of circuit board, the third layer of circuit board, the fourth layer of circuit board, the fifth layer of circuit board and the sixth layer of circuit board are sequentially arranged downwards; a solar cell panel 1 covers the first layer of circuit board, an antenna feeder 1 and an antenna feeder 2 are printed and manufactured at the same time, the antenna feeder 1 is connected with the relay circuit module, and the antenna feeder 2 is connected with the self-powered circuit module; a metal slot antenna 1 is printed and manufactured above the second layer of circuit board; a double-frequency high-impedance surface is printed and manufactured above the third layer of circuit board, and a metal floor is manufactured below the third layer of circuit board; the first, second and third layers of circuit boards jointly form a slot antenna 1 loaded with a high-impedance surface; the fourth layer of circuit board and the third layer of circuit board are symmetrically arranged relative to the metal floor; the fifth layer circuit board and the second layer circuit board are symmetrically arranged relative to the metal floor, and the metal structures manufactured on the fifth layer circuit board and the second layer circuit board are the same; the sixth layer of circuit board and the first layer of circuit board are symmetrically arranged relative to the metal floor, a solar panel 2 covers the lower part of the sixth layer of circuit board and an antenna feeder 3 is printed and manufactured; the fourth, fifth and sixth layers of circuit boards jointly form a slot antenna 2 loaded with a high-impedance surface; the slot antenna 1 and the slot antenna 2 are electrically connected through a coaxial line structure formed by the metalized through hole 1 and the metalized through hole 2.
(1) The solar cell panel 1 and the solar cell panel 2 are adhered to the outside of the radiation opening surface of the slot antenna, and radiation of the slot antenna is not influenced.
(2) The slot antenna 1 and the slot antenna 2 adopt microstrip line coupling feed, two feed ports of the slot antenna 1 are respectively formed into a left polarization direction and a right polarization direction, and the antenna feed line 1 is used for transmitting communication signals and is connected to the relay circuit module; the antenna feeder 2 is used for collecting microwave energy and transmitting the microwave energy to the self-power circuit module for rectification, and the aperture sharing of the slot antenna 1 is realized.
(3) The relay circuit module performs relay amplification and noise suppression on the received signal; and transmits the signal to the slot antenna 2 through the coaxial line structure formed by the metallized through hole 1 and the metallized through hole 2 and forwards the signal.
(4) The solar cell panel 1, the solar cell panel 2 and the antenna feeder 2 are connected to a self-powered circuit module, the self-powered circuit module comprises a microwave rectifying circuit, a power supply voltage stabilizing circuit, a lithium battery and a power supply controller, and can collect and store photovoltaic energy and microwave energy at the same time and supply power to the relay circuit module as a direct current power supply; the device is used for collecting, stabilizing and storing microwave and solar energy; the self-powered circuit module is also connected to the relay circuit module to provide direct current power to the module.
Preparing a slotted antenna 1 below the first layer of circuit board, wherein the antenna is made by slotting on a printed metal copper layer; the metal outside the slot antenna serves as the floor of the antenna feeder 1, the antenna feeder 2 and the relay circuit module. The frequencies of the slot antennas 1 and 2 cover the frequencies of 4G and 5G communication.
And a double-frequency high-impedance surface printed and manufactured above the third layer of circuit board is used for reducing the profile of the antenna, and the center frequencies of the double-frequency high-impedance surface are 2.4GHz and 3.5 GHz. The high-impedance surface is formed by periodically arranging and forming metal square rings and metal squares, the reflection phase of two frequency points of 2.4GHz and 3.5GHz is 0 degree, and the reflection phase of the middle frequency of the two frequency points is near 0 degree. The high-impedance surface loading slot antenna can realize the unidirectional radiation of the antenna, improve the gain of the antenna and realize the isolation of the receiving and transmitting antenna.
A metal floor is prepared below the third layer of circuit board, and the metal floor can provide signal shielding and simultaneously realize the dual functions of 0-degree reflection phase by matching with a high-impedance surface.
And a feeder line of the solar cell panel and the slot antenna 2 is arranged below the sixth layer of circuit board. The solar cell panel is connected to the self-power circuit module to collect indoor light energy. And a feeder line of the slot antenna 2 is connected with an output port of the relay circuit module through a metalized through hole, so that the transmission of the forwarding signal is realized.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art, having the benefit of this disclosure, may effect numerous modifications thereto and changes may be made without departing from the scope of the invention in its broader aspects.
Claims (9)
1. The utility model provides a blind device is mended in integration self-power relay which characterized in that: the method comprises the following steps: the circuit board comprises a first layer of circuit board, a second layer of circuit board, a third layer of circuit board, a fourth layer of circuit board, a fifth layer of circuit board and a sixth layer of circuit board, wherein the first layer of circuit board, the second layer of circuit board, the third layer of circuit board, the fourth layer of circuit board, the fifth layer of circuit board and the sixth layer of circuit board are sequentially arranged downwards; a solar cell panel 1 covers the first layer of circuit board, an antenna feeder 1 and an antenna feeder 2 are printed and manufactured at the same time, the antenna feeder 1 is connected with the relay circuit module, and the antenna feeder 2 is connected with the self-powered circuit module; a metal slot antenna 1 is printed and manufactured above the second layer of circuit board; a double-frequency high-impedance surface is printed and manufactured above the third layer of circuit board, and a metal floor is manufactured below the third layer of circuit board; the first, second and third layers of circuit boards jointly form a slot antenna 1 loaded with a high-impedance surface; the fourth layer of circuit board and the third layer of circuit board are symmetrically arranged relative to the metal floor; the fifth layer circuit board and the second layer circuit board are symmetrically arranged relative to the metal floor, and the metal structures manufactured on the fifth layer circuit board and the second layer circuit board are the same; the sixth layer of circuit board and the first layer of circuit board are symmetrically arranged relative to the metal floor, a solar panel 2 covers the lower part of the sixth layer of circuit board and an antenna feeder 3 is printed and manufactured; the fourth, fifth and sixth layers of circuit boards jointly form a slot antenna 2 loaded with a high-impedance surface; the slot antenna 1 and the slot antenna 2 are electrically connected through a coaxial line structure formed by the metalized through hole 1 and the metalized through hole 2.
2. The integrated self-powered relay blind-fill device according to claim 1, wherein: the relay circuit module performs relay amplification and noise suppression on the received signal; and transmits the signal to the slot antenna 2 through the coaxial line structure formed by the metallized through hole 1 and the metallized through hole 2 and forwards the signal.
3. The integrated self-powered relay blind-fill device according to claim 1, wherein: the solar cell panel 1 and the solar cell panel 2 are adhered to the outside of the radiation port surface of the slot antenna, so that the radiation performance of the slot antenna is not influenced; the slot antenna 1 and the slot antenna 2 adopt microstrip line coupling feed, and two feed ports of the slot antenna 1 are respectively formed into two polarization directions of left rotation and right rotation.
4. The integrated self-powered relay blind-fill device according to claim 3, wherein: the antenna feeder 1 is used for transmitting communication signals and is connected to the relay circuit module; the antenna feeder 2 is used for collecting microwave energy and transmitting the microwave energy to the self-power circuit module for rectification, and the aperture sharing of the slot antenna 1 is realized.
5. The integrated self-powered relay blind-fill device according to claim 1, wherein: the solar cell panel 1, the solar cell panel 2 and the antenna feeder 2 are connected to a self-power circuit module, and the self-power circuit module provides a direct-current power supply for the relay circuit module.
6. The integrated self-powered relay blind-fill device according to claim 5, wherein: the self-powered circuit module comprises a microwave rectifying circuit, a power supply voltage stabilizing circuit, a battery and a power supply controller, and can be used for simultaneously collecting and storing photovoltaic energy and microwave energy and supplying power to the relay circuit module as a direct current power supply.
7. The integrated self-powered relay blind-fill device according to claim 6, wherein: the frequencies of the slot antennas 1 and 2 cover the frequencies of 4G and 5G communication.
8. The integrated self-powered relay blind-fill device according to claim 1, wherein: and a double-frequency high-impedance surface printed and manufactured above the third layer of circuit board is used for reducing the profile of the antenna, and the center frequency of the double-frequency high-impedance surface is 2.4GHz and 3.5 GHz. The high-impedance surface is formed by periodically arranging and forming metal square rings and metal squares, the reflection phase of two frequency points of 2.4GHz and 3.5GHz is 0 degree, and the reflection phase of the middle frequency of the two frequency points is near 0 degree.
9. The integrated self-powered relay blind-fill device according to claim 1, wherein: and a metal floor is prepared below the third layer of circuit board, and the metal floor can provide signal shielding and simultaneously realize the dual function of 0-degree reflection by matching with a high-impedance surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110721862.3A CN113410635B (en) | 2021-06-28 | 2021-06-28 | Integrated self-powered relay blind supplementing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110721862.3A CN113410635B (en) | 2021-06-28 | 2021-06-28 | Integrated self-powered relay blind supplementing device |
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| CN113410635A true CN113410635A (en) | 2021-09-17 |
| CN113410635B CN113410635B (en) | 2024-10-15 |
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| CN202110721862.3A Active CN113410635B (en) | 2021-06-28 | 2021-06-28 | Integrated self-powered relay blind supplementing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114865295A (en) * | 2022-05-23 | 2022-08-05 | 电子科技大学 | Photoelectric energy integrated collection antenna |
| CN115241638A (en) * | 2022-06-24 | 2022-10-25 | 四川大学 | Light and thin rectifying antenna coplanar and integrated with solar thin-film battery |
| WO2023077585A1 (en) * | 2021-11-05 | 2023-05-11 | 上海物骐微电子有限公司 | Smart reflective panel supporting wifi, manufacturing method, and power supply system |
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| Publication number | Publication date |
|---|---|
| CN113410635B (en) | 2024-10-15 |
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