CN112993581A - Gap antenna system and intelligent bulb system - Google Patents
Gap antenna system and intelligent bulb system Download PDFInfo
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- CN112993581A CN112993581A CN202110200573.9A CN202110200573A CN112993581A CN 112993581 A CN112993581 A CN 112993581A CN 202110200573 A CN202110200573 A CN 202110200573A CN 112993581 A CN112993581 A CN 112993581A
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- 230000008878 coupling Effects 0.000 claims abstract description 38
- 238000010168 coupling process Methods 0.000 claims abstract description 38
- 238000005859 coupling reaction Methods 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims description 14
- 239000000523 sample Substances 0.000 claims description 12
- 230000005855 radiation Effects 0.000 abstract description 23
- 238000005286 illumination Methods 0.000 abstract description 8
- 230000010354 integration Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 18
- 230000006872 improvement Effects 0.000 description 8
- 238000012545 processing Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000011426 transformation method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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Abstract
The invention discloses a slot antenna system and an intelligent bulb system, wherein the slot antenna system comprises an antenna slot and a feed module; the antenna slot is arranged on a circuit board of a light-emitting circuit module of the intelligent bulb and is positioned in a coupling feed range of the feed module; the feeding module is connected with the wireless communication module in the intelligent bulb. By adopting the technical means of the embodiment of the invention, the function integration of illumination and antenna radiation is realized through the light-emitting circuit module of the intelligent bulb, the internal space of the intelligent bulb is effectively fully utilized, and the radiation efficiency of the antenna and the illumination effect of the intelligent bulb can be better considered.
Description
Technical Field
The invention relates to the technical field of intelligent home, in particular to a slot antenna system and an intelligent bulb system.
Background
With the development of smart homes, the intelligent control of a lighting system also becomes a demand of modern daily life, and an intelligent bulb is produced at the same time. The intelligent control module is embedded into the common bulb by adopting an embedded internet of things core technology to form the intelligent bulb, so that the intelligent bulb is supported by a cloud service platform, and the intelligent control module is subjected to information interaction through the lighting application on the terminal, and the intelligent control of the intelligent bulb can be realized.
However, in the process of implementing the invention, the inventor finds that the prior art has at least the following problems: in current intelligent bulb's structural design, the inside antenna module of intelligent bulb is the independent design, can not be shielded by lamp plate, the lamp stand of metal material for guaranteeing the radiation of antenna, and intelligent bulb's antenna board generally need stretch out the certain height of lamp plate, and the structural protrusion of this part can influence the illuminating effect of bulb, and simultaneously, antenna module's space demand is too big, also can cause intelligent bulb's internal environment more complicated.
Disclosure of Invention
The embodiment of the invention aims to provide a slot antenna system and an intelligent bulb system, which can realize the function integration of illumination and antenna radiation, fully utilize the internal space of an intelligent bulb and effectively improve the illumination effect of the bulb.
To achieve the above object, an embodiment of the present invention provides a slot antenna system, including: an antenna slot and a feed module;
the antenna slot is arranged on a circuit board of a light-emitting circuit module of the intelligent bulb and is positioned in a coupling feed range of the feed module;
the feeding module is connected with the wireless communication module in the intelligent bulb.
As an improvement of the above scheme, the slot width of the antenna slot is much less than one wavelength, and the slot length is about one-quarter wavelength.
As an improvement of the above scheme, the slot width of the antenna slot is much smaller than one wavelength, and the slot length is about one-half wavelength.
As an improvement of the above, the feeding module includes a PCB circuit unit connected to the wireless communication module, and a coupling feeding unit printed on the PCB circuit unit.
As a refinement of the above solution, the feeding module includes a coupling feeding unit printed on the wireless communication module.
As a modification of the above, the power feeding module includes a metal probe connected to the wireless communication module.
The embodiment of the invention also provides an intelligent bulb system, which comprises:
the bulb comprises a bulb body, wherein a power supply module, a light-emitting circuit module, a wireless communication module and a slot antenna system are arranged in the bulb body; the slot antenna system comprises an antenna slot and a feed module;
the power supply module is respectively connected with the light-emitting circuit module and the wireless communication module, and the wireless communication module is connected with the feed module;
the circuit board of the light-emitting circuit module is provided with the antenna slot, and the antenna slot is positioned in the coupling feed range of the feed module.
As an improvement of the above scheme, the slot width of the antenna slot is much less than one wavelength, and the slot length is about one-quarter wavelength.
As an improvement of the above scheme, the slot width of the antenna slot is much smaller than one wavelength, and the slot length is about one-half wavelength.
As an improvement of the above, the feeding module includes a PCB circuit unit connected to the wireless communication module, and a coupling feeding unit printed on the PCB circuit unit.
As a refinement of the above solution, the feeding module includes a coupling feeding unit printed on the wireless communication module.
As a modification of the above, the power feeding module includes a metal probe connected to the wireless communication module.
As an improvement of the above scheme, the intelligent light bulb system further comprises a heat dissipation member; the heat dissipation piece is attached to the surface of the light-emitting circuit module; and the radiating piece is provided with a gap with the same size as the antenna gap.
As an improvement of the above scheme, the feeding module is located between the light emitting circuit module and the bottom of the bulb body.
Compared with the prior art, the slot antenna system and the intelligent bulb system disclosed by the invention comprise an antenna slot and a feed module; the antenna slot is arranged on a circuit board of a light-emitting circuit module of the intelligent bulb and is positioned in a coupling feed range of the feed module; the feeding module is connected with the wireless communication module in the intelligent bulb. By adopting the technical means of the embodiment of the invention, the slot antenna system has the characteristics of low profile, light weight, simple processing and easy conformation with an object, the lighting circuit module of the intelligent bulb can realize the function integration of lighting and antenna radiation by arranging the slot antenna system in the intelligent bulb, an antenna plate is not required to be added independently, the material cost and the assembly difficulty of the antenna system can be effectively saved, the use space of the antenna module is effectively reduced, and the full utilization of the inner space of the intelligent bulb is realized. Moreover, the radiation efficiency of the antenna and the lighting effect of the intelligent bulb can be better considered.
Drawings
Fig. 1 is a schematic structural diagram of a slot antenna system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first slot antenna according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second slot antenna according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first feeder module according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second power feeding module according to a fifth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a third power feeding module according to a sixth embodiment of the present invention;
fig. 7 is a schematic structural diagram of an intelligent light bulb system according to a seventh embodiment of the present invention;
fig. 8 is a graphical illustration of scattering parameters for a slot antenna system in accordance with an embodiment of the present invention;
fig. 9 is a graphical illustration of antenna efficiency of a slot antenna system in accordance with an embodiment of the present invention;
fig. 10(a) is a schematic coordinate diagram of an intelligent light bulb system in an embodiment of the invention;
fig. 10(b) is a schematic diagram of the XOY-plane antenna direction of the slot antenna system in the embodiment of the present invention;
fig. 10(c) is a schematic diagram of the XOZ plane antenna direction of the slot antenna system in the embodiment of the present invention;
fig. 10(d) is a schematic diagram of the YOZ plane antenna direction of the slot antenna system in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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 present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a slot antenna system according to a first embodiment of the present invention, where fig. 1(a) is a side view, and fig. 1(b) is a top view. A slot antenna system 100 provided in an embodiment of the present invention includes: antenna slot 110 and feed module 120.
The antenna slot 110 is arranged on a circuit board of a light-emitting circuit module of the intelligent bulb, and the antenna slot 110 is located within a coupling feed range of the feed module 120; the feeding module 120 is connected with a wireless communication module in the smart bulb.
In the embodiment of the present invention, the slot antenna system 100 may be applied to a smart bulb in which a light emitting circuit module for implementing a lighting function and a wireless communication module for implementing a communication control function are provided. Under an embodiment, the light emitting circuit module is a combined structure of an LED lamp and a lamp panel, and the wireless communication module is a WiFi board.
The antenna slot 110 in the slot antenna system 100 is disposed on the lamp panel, the feeding module 120 is connected to the WiFi panel, and the installation position of the feeding module 120 needs to be close to the antenna slot 110, so that the antenna slot 110 can be excited by the feeding module 120 in a coupling manner.
The working principle of the slot antenna system 100 provided by the embodiment of the invention is as follows: the WiFi board in the intelligent bulb generates an electrical signal in the power supply state and transmits the electrical signal to the connected feeding module 120. The feeding module 120 feeds the antenna slot 110 by coupling feeding, so that the antenna slot 110 is excited to radiate electromagnetic waves outwards.
It can be understood that the light emitting circuit module can also be a combination of other types of light emitting sources and circuit boards, and the wireless communication module can also be a communication module formed by signals such as bluetooth, ZigBee and the like, without affecting the beneficial effects obtained by the invention.
The embodiment of the invention provides a slot antenna system, which comprises an antenna slot and a feed module; the antenna slot is arranged on a circuit board of a light-emitting circuit module of the intelligent bulb and is positioned in a coupling feed range of the feed module; the feeding module is connected with the wireless communication module in the intelligent bulb. By adopting the technical means of the embodiment of the invention, the slot antenna system has the characteristics of low profile, light weight, simple processing and easy conformation with an object, and the lighting circuit module of the intelligent bulb can realize the function integration of lighting and antenna radiation by setting the antenna module of the intelligent bulb as the slot antenna system without independently adding an antenna plate, thereby effectively saving the material cost and the assembly difficulty of the antenna system, effectively reducing the use space of the antenna module and realizing the full utilization of the inner space of the intelligent bulb.
As a preferred implementation manner, refer to fig. 2, which is a schematic structural diagram of a first slot antenna according to a second embodiment of the present invention. The second embodiment of the present invention is implemented on the basis of the first embodiment, the slot width of the antenna slot 110 is much smaller than one wavelength, and the slot length is about one-quarter wavelength.
In the embodiment of the present invention, the antenna slot 110 is designed as an open slot structure, that is, the length is about a quarter wavelength by slotting the light emitting circuit module to the end of the circuit board.
It can be understood that the length of the antenna slot may be set to be a quarter of a wavelength, or a preset length may be set, and the length of the antenna slot is set to be within a length range formed by adding or subtracting the preset length from the quarter of the wavelength, which does not affect the beneficial effects obtained by the present invention.
As another preferred implementation, refer to fig. 3, which is a schematic structural diagram of a second slot antenna provided in a third embodiment of the present invention. The third embodiment of the present invention is implemented on the basis of the first embodiment, the slot width of the antenna slot 110 is much smaller than one wavelength, and the slot length is about one-half wavelength.
In the embodiment of the present invention, the antenna slot 110 is designed as a short-circuit slot structure, that is, the length is about one-half wavelength by forming a slot in the middle of the light emitting circuit module.
It can be understood that the length of the antenna slot may be set to be one half wavelength, or a preset length may be set, and the length of the antenna slot is set to be within a length range formed by adding or subtracting the preset length by one half wavelength, which does not affect the beneficial effects obtained by the present invention.
It is understood that the antenna slot of the embodiments of the present invention includes, but is not limited to, an open slot structure and a short slot structure, and other antenna slot structures that can be loaded on the lighting circuit module of the smart light bulb are within the scope of the present invention.
Further, as a preferred embodiment, referring to fig. 4, a schematic structural diagram of a first power feeding module provided in a fourth embodiment of the present invention is shown. The fourth embodiment of the present invention can be implemented on the basis of any one of the first to third embodiments, and the feeding module 120 includes a PCB circuit unit connected to the wireless communication module, and a coupling feeding unit printed on the PCB circuit unit.
In the embodiment of the present invention, the feeding module 120 is configured as a PCB card feeding structure, a PCB board is disposed on the wireless communication module, for example, a WiFi board, a coupling feeding unit, for example, a coupling antenna structure, is printed on the PCB board, and the PCB board is close to the antenna slot 110, so as to implement coupling feeding to the antenna slot 110.
By adopting the embodiment of the invention, the PCB printed with the coupling antenna structure is inserted on the WiFi board to realize the coupling feed function, the internal component structure of the original intelligent bulb can not be changed, and the transformation method is simple and convenient and is easy to operate.
As another preferred implementation, referring to fig. 5, a schematic structural diagram of a second power feeding module provided in fifth embodiment of the present invention is shown. The fifth embodiment of the invention can be implemented on the basis of any one of the first to third embodiments, and the feeding module 120 includes a coupling feeding unit printed on the wireless communication module.
In the embodiment of the present invention, the feeding module 120 is configured as an on-board microstrip feeding structure. By printing a coupling antenna structure on the wireless communication module, for example, a WiFi board, and placing the wireless communication module close to the circuit board where the antenna slot 110 is located, direct coupling feeding to the antenna slot 110 is achieved through the wireless communication module.
By adopting the embodiment of the invention, the coupling feed function is realized by directly printing the coupling antenna structure on the WiFi board, only minor changes are needed to be made on the structure and the position of the WiFi board, the transformation method is simple and convenient, and the use space of the antenna module is saved more.
As another preferred implementation, referring to fig. 6, a schematic structural diagram of a third power feeding module provided in a sixth embodiment of the present invention is shown. Sixth embodiment of the invention can be implemented on the basis of any one of the first to third embodiments, and the power feeding module 120 includes a metal probe connected to the wireless communication module.
In the embodiment of the present invention, the power feeding module 120 is configured as a metal probe power feeding structure. By inserting a metal probe on the wireless communication module, such as a WiFi board, one end of the metal probe is close to the antenna slot 110, so as to implement coupling feeding to the antenna slot 110.
By adopting the embodiment of the invention, the metal probe is inserted on the WiFi board to realize the coupling feed function, the internal component structure of the original intelligent bulb is not changed, the transformation method is simple and convenient, the operation is easy, and the use space of the antenna module can be effectively saved.
The embodiment of the invention provides a slot antenna system, which comprises an antenna slot and a feed module; the antenna slot is arranged on a circuit board of a light-emitting circuit module of the intelligent bulb and is positioned in a coupling feed range of the feed module; the feeding module is connected with the wireless communication module in the intelligent bulb. The antenna slot can be set to be an open-circuit slot or a short-circuit slot structure, the feed module can be set to be a PCB plug-in component feed structure, an onboard microstrip feed structure or a metal probe feed structure, by adopting the technical means of the embodiment of the invention, the slot antenna system is flexible and various in configuration mode, has the characteristics of low profile, light weight, simple processing and easiness in conformation with an object, can realize the function integration of illumination and antenna radiation through the luminous circuit module of the intelligent bulb, does not need to increase an antenna board independently, can effectively save the material cost and the assembly difficulty of the antenna system, effectively reduces the use space of the antenna module and realizes the full utilization of the inner space of the intelligent bulb.
Fig. 7 is a schematic structural diagram of an intelligent light bulb system according to a seventh embodiment of the present invention. The seventh embodiment of the present invention provides an intelligent light bulb system 200, including:
the bulb comprises a bulb body, wherein a power supply module 210, a light-emitting circuit module 220, a wireless communication module 230 and a slot antenna system 240 are arranged in the bulb body; the slot antenna system 240 includes an antenna slot 241 and a feed module 242;
the power module 210 is respectively connected with the light-emitting circuit module 220 and the wireless communication module 230, and the wireless communication module 230 is connected with the power feeding module 242; the circuit board of the light emitting circuit module 220 is provided with the antenna slot 241, and the antenna slot 241 is located within the coupling feeding range of the feeding module 242.
Preferably, the power feeding module is located between the light emitting circuit module and the bottom of the bulb body.
In the embodiment of the present invention, the light emitting circuit module 220 is used for implementing a lighting function, and for example, the light emitting circuit module is a combined structure of an LED lamp and a lamp panel. The wireless communication module 230 is used to implement a communication control function, and for example, the wireless communication module is a WiFi board.
The power module 210 is disposed at the bottom of the bulb body, and is connected to the base of the smart bulb to supply power to the light emitting circuit module 220 and the wireless communication module 230.
The antenna slot 241 is disposed on the circuit board of the light emitting circuit module 220, the feeding module 242 is connected to the wireless communication module 230, and the installation position of the feeding module 242 needs to be close to the antenna slot 241, so that the antenna slot 241 can be excited by the feeding module 242 in a coupling manner.
The working principle of the intelligent bulb system 200 provided by the embodiment of the invention is as follows: the power module 210 supplies power to the light emitting circuit module 220 and the wireless communication module 230, so that the light emitting circuit module 220 can realize a lighting function, and the wireless communication module 230 generates an electrical signal in a power supply state and transmits the electrical signal to the connected power feeding module 242. The feeding module 242 feeds power to the antenna slot 241 by coupling feeding, so that the antenna slot 241 is excited to radiate electromagnetic waves outwards.
Therefore, the power panel-WiFi panel-feed module in the embodiment of the present invention is a process of driving a signal by a power supply, and the feed module is a transition structure for transmitting an electrical signal from the WiFi panel to the antenna slot, and the conduction of energy is realized by a contactless feed method, so that the antenna slot generates radiation.
Referring to fig. 8 to 9, fig. 8 is a graph illustrating scattering parameters of a slot antenna system according to an embodiment of the present invention, fig. 9 is a graph illustrating antenna efficiency of the slot antenna system according to the embodiment of the present invention, and fig. 10 is a graph illustrating antenna directions of the slot antenna system according to the embodiment of the present invention. By adopting the intelligent bulb system provided by the embodiment of the invention, the scattering parameter (S parameter) of the slot antenna in the frequency band of 2.3-2.7 GHz is less than-10 dB, the bandwidth is greater than 400MHz, and the matching degree is good. The simulation radiation efficiency of the slot antenna in the range of 2.4-2.5 GHz of the required frequency band can reach more than 90%, and the simulation radiation efficiency is far higher than that of the antenna of the existing intelligent bulb. And the main radiation direction of the slot antenna is consistent with the normal direction of the lamp panel in the positive and negative directions of the Z axis. Because the normal direction of lamp plate is intelligent bulb's direction of illumination, does not have the metal to shelter from, therefore the radiation direction of slot antenna can more do benefit to the radiation of electromagnetic wave with the normal direction of lamp plate unanimous, consequently, this radiation direction agrees with mutually with the installation using-way of bulb, and the environment degree of dependence is low, and can adapt to the socket of multiple difference.
By adopting the technical means of the embodiment of the invention, the slot antenna system has the characteristics of low profile, light weight, simple processing and easy conformation with an object, and the lighting circuit module of the intelligent bulb can realize the function integration of lighting and antenna radiation by setting the antenna module of the intelligent bulb as the slot antenna system, thereby fully utilizing the internal space of the intelligent bulb. In addition, because the circuit part of the antenna module is completely positioned below the lamp panel, compared with the scheme that the antenna module is arranged into a convex structure positioned above the lamp panel in the prior art, the scheme can not influence the lighting effect of the bulb; compared with the scheme that the antenna module is arranged in the lamp cup below the lamp panel in the prior art, the electromagnetic wave radiation of the antenna module is easily shielded by the lamp panel with the metal structure. In addition, the radiation direction of the slot antenna is consistent with the normal direction of the lamp panel, so that the radiation of electromagnetic waves is facilitated, and the radiation efficiency of the antenna is further ensured.
Preferably, in the first embodiment, the slot width of the antenna slot 241 is much smaller than one wavelength, and the slot length is about one-quarter wavelength.
In the second embodiment, the slot width of the antenna slot 241 is much smaller than one wavelength, and the slot length is about one-half wavelength.
Preferably, in the first embodiment, the feeding module 242 includes a PCB circuit unit connected to the wireless communication module 230, and a coupling feeding unit printed on the PCB circuit unit.
In a second embodiment, the feeding module 242 is a coupling feeding unit printed on the wireless communication module.
In a third embodiment, the feeding module 242 includes a metal probe connected to the wireless communication module.
By adopting the technical means of the embodiment of the invention, the slot antenna system is arranged in the intelligent bulb system and comprises an antenna slot and a feed module, wherein the antenna slot can be set to be an open-circuit slot or a short-circuit slot structure, and the feed module can be set to be a PCB plug-in board feed, on-board microstrip feed or metal probe feed structure.
As a preferred embodiment, the intelligent light bulb system 200 further comprises a heat sink 250; the heat dissipation member 250 is attached to the surface of the light emitting circuit module 220; and the heat sink 250 is provided with a gap having the same size as the antenna gap.
By adopting the technical means of the embodiment of the invention, the heat radiating piece is provided with the gaps with the same size and shape as the antenna gaps, so that the electromagnetic wave radiation of the gap antenna system can not be shielded on the basis of realizing the heat radiating function of the intelligent bulb system, and the radiation efficiency of the antenna is ensured.
The second embodiment of the invention provides an intelligent bulb system which comprises a bulb body, wherein a power supply module, a light-emitting circuit module, a wireless communication module and a slot antenna system are arranged in the bulb body; the slot antenna system comprises an antenna slot and a feed module; the power supply module is respectively connected with the light-emitting circuit module and the wireless communication module, and the wireless communication module is connected with the feed module; the circuit board of the light-emitting circuit module is provided with the antenna slot, and the antenna slot is positioned in the coupling feed range of the feed module. The intelligent bulb can realize the function integration of illumination and antenna radiation through the light-emitting circuit module in the intelligent bulb, so as to fully utilize the internal space of the intelligent bulb and effectively give consideration to the radiation effect of the antenna and the illumination effect of the intelligent bulb.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (14)
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|---|---|---|---|
| CN202110200573.9A CN112993581A (en) | 2021-02-23 | 2021-02-23 | Gap antenna system and intelligent bulb system |
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| CN202110200573.9A CN112993581A (en) | 2021-02-23 | 2021-02-23 | Gap antenna system and intelligent bulb system |
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| CN108242587A (en) * | 2016-12-23 | 2018-07-03 | 华为技术有限公司 | Antennas, lighting systems and communication systems |
| CN110352316A (en) * | 2017-03-01 | 2019-10-18 | 昕诺飞控股有限公司 | Lighting apparatus with slot antenna |
| CN209029522U (en) * | 2018-12-19 | 2019-06-25 | 河南天安润信信息技术有限公司 | An Antenna Structure Based on Vehicle-mounted Mobile Phone Terminal Positioning System |
| CN111649246A (en) * | 2020-06-28 | 2020-09-11 | 杭州涂鸦信息技术有限公司 | Intelligent lamp |
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Application publication date: 20210618 |