CN108281787B - Electronic device - Google Patents
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- CN108281787B CN108281787B CN201810045748.1A CN201810045748A CN108281787B CN 108281787 B CN108281787 B CN 108281787B CN 201810045748 A CN201810045748 A CN 201810045748A CN 108281787 B CN108281787 B CN 108281787B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
Abstract
The application provides an electronic device, the electronic device includes: a circuit board; an antenna for radiating electromagnetic waves, the antenna being electrically connected to the circuit board; and a first isolating piece is arranged in the area between the antenna and the circuit board and is used for isolating the electromagnetic wave radiated by the antenna from being coupled to the circuit board. The electronic device of the application is beneficial to improving the condition that the antenna generates radiation stray.
Description
Technical Field
The present application relates to the field of electronic technologies, and in particular, to an electronic device.
Background
The radiated stray is a most complex and difficult-to-solve problem in all authentications as a mandatory authentication index of the current electronic equipment. Especially for the GSM frequency band, because its own power is very high, it is easy to instantaneously excite strong energy to cause the harmonic wave of the radiated stray to exceed the standard.
Among the prior art, because the arrival of full-face screen, the antenna headroom district is compressed, and the partial device of circuit board has been crowded to account for the original partial headroom district of antenna because the demand of function for the headroom district diminishes, and the device of neighbouring antenna headroom district receives the radiation of powerful electromagnetic wave energy and can produce the harmonic, and these harmonic rethread antenna radiation is gone out, will produce the radiation stray.
Disclosure of Invention
The application provides an electronic device, the electronic device includes:
a circuit board;
an antenna for radiating electromagnetic waves, the antenna being electrically connected to the circuit board;
and a first isolating piece is arranged in the area between the antenna and the circuit board and is used for isolating the electromagnetic wave radiated by the antenna from being coupled to the circuit board.
The electronic device of the present application includes: a circuit board; an antenna for radiating electromagnetic waves, the antenna being electrically connected to the circuit board; and a first isolating piece is arranged in the area between the antenna and the circuit board and is used for isolating the electromagnetic wave radiated by the antenna from being coupled to the circuit board. This application is through setting up first separator between antenna and circuit board, can avoid the electromagnetic wave coupling of antenna radiation to the circuit board on, and if the circuit board coupling come from the electromagnetic wave of antenna radiation, will produce the harmonic, these harmonics go out through antenna radiation again and will cause the radiation stray, consequently the technical scheme of this application helps improving the antenna and produces the condition that the radiation is stray.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of an electronic device according to another embodiment of the present application.
FIG. 3 is a schematic structural diagram of the arrangement of microstructures in a preferred embodiment of the present application.
Fig. 4 is a schematic structural diagram of an electronic device according to another embodiment of the present application.
Fig. 5 is a schematic structural diagram of an electronic device according to still another embodiment of the present application.
Fig. 6 is a schematic structural diagram of an electronic device according to still another embodiment of the present application.
Fig. 7 is a schematic diagram of a positional relationship among the spacer, the circuit board, and the antenna in the embodiment of the present application.
Fig. 8 is a schematic structural diagram of an electronic device according to still another embodiment of the present application.
Fig. 9 is a schematic structural diagram of an electronic device according to still another embodiment of the present application.
FIG. 10 is a thickness relationship diagram of spacers in accordance with a preferred embodiment of the present application.
Fig. 11 is a schematic structural diagram of an electronic device according to a preferred embodiment of the present application.
Fig. 12 is a schematic diagram of the cross-sectional view AA of fig. 10.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive effort based on the embodiments in the present application are within the scope of protection of the present application.
The numerical range represented by "to" in the present specification means a range including numerical values before and after "to" as a minimum value and a maximum value, respectively. In the drawings, structures that are similar or identical are denoted by the same reference numerals.
Some terms in the present application are explained below to facilitate understanding by those skilled in the art.
(1) Electronic devices (Electronic devices) are devices that are composed of Electronic components such as integrated circuits, transistors, and Electronic tubes, and that function using Electronic technologies (including) software, and a common Electronic Device includes: smart phones, tablet computers, notebook computers, palm computers, Mobile Internet Devices (MID), wearable devices such as smart watches, smart bracelets, pedometers, and the like.
(2) An antenna (aerol) is a transducer that converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium, usually free space, or vice versa. A component for transmitting or receiving electromagnetic waves in a radio device.
(3) A Printed Circuit Board (PCB), which is also called a ceramic Circuit Board, an alumina ceramic Circuit Board, an aluminum nitride ceramic Circuit Board, a PCB Board, an aluminum substrate, a high frequency Board, a thick copper Board, an impedance Board, a PCB, an ultra-thin Circuit Board, a Printed (copper etching technology) Circuit Board, and the like. Circuit boards play an important role in the mass production of fixed circuits and in optimizing the layout of electronic devices.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. The electronic device 10 includes: a circuit board 100; an antenna 200, the antenna 200 for radiating electromagnetic waves, the antenna 200 being electrically connected to the circuit board 100; a first spacer 300 is disposed in an area between the antenna 200 and the circuit board 100, and the first spacer 300 is used for isolating electromagnetic waves radiated by the antenna 200 from being coupled to the circuit board 100.
Optionally, the circuit board 100 is provided with various circuits and ports, in this embodiment, the circuit board 100 is a main board of the electronic device 10, and the main board is provided with various chips for calculating and processing data. Further, the circuit board 100 is provided with a feeding circuit for controlling the antenna 200 to radiate electromagnetic waves. In one embodiment, the circuit board 100 is fixed to a middle frame of the electronic device 10 and is located in a housing of the electronic device 10.
Alternatively, in the present embodiment, the antenna 200 is used to radiate electromagnetic waves, and the antenna 200 is electrically connected to the circuit board 100. Specifically, the antenna 200 is electrically connected to a feeding circuit on the circuit board 100, and the feeding circuit transmits a signal to be radiated through the antenna 200. The antenna 200 may be fixed to the circuit board 100 or to the housing of the electronic device 10. The antenna 200 is made of a metal material, and in one embodiment, when the housing of the electronic device 10 is made of a metal material, the antenna 200 may be a part of the housing of the electronic device 10, and the housing of the electronic device 10 is used as an electromagnetic wave radiator of the antenna 200, so that space may be saved.
Optionally, in an embodiment, the first spacer 300 is a metal plate. Since the metal plate has a shielding effect on electromagnetic waves, when the first spacer 300 is a metal plate, it is possible to prevent electromagnetic waves radiated from the antenna 200 from being coupled to the circuit board 100. However, if the circuit board 100 is coupled to the electromagnetic wave radiated from the antenna 200, harmonics are generated, and the harmonics are radiated by the antenna 200 to cause radiation stray, so that the present embodiment helps to improve the radiation stray generated by the antenna 200.
Alternatively, in yet another embodiment, the first spacer 300 is a wave-absorbing material, such as a wave-absorbing material, which is a material capable of absorbing or substantially attenuating electromagnetic wave energy incident on its surface, thereby reducing electromagnetic wave interference. The first separator 300 may be a carbon-based wave-absorbing material, such as: graphene, graphite, carbon black, carbon fiber, carbon nanotubes; iron-based wave-absorbing materials, such as: ferrite, magnetic iron nanomaterial; ceramic-based wave-absorbing materials, such as: silicon carbide; alternatively, other types of materials, such as: conductive polymers, chiral materials (left-handed materials), plasma materials. When the first spacer 300 is made of a wave-absorbing material, the electromagnetic wave radiated from the antenna 200 can be effectively absorbed and coupled to the circuit board 100. If the first spacer 300 is not provided, the circuit board 100 couples to the electromagnetic wave radiated from the antenna 200, and generates harmonics, which are radiated by the antenna 200 to cause stray radiation, so that this embodiment helps to improve the stray radiation.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an electronic device according to another embodiment of the present application. Further, a plurality of microstructures 310 are disposed on the surface of the first spacer 300 adjacent to the antenna 200, the microstructures 310 are arranged in a matrix, and the microstructures 310 can better absorb electromagnetic waves. The micro-structure 310 is a wedge-shaped structure, which is helpful for better absorbing the electromagnetic wave radiated from the antenna 200, thereby being helpful for improving the radiation stray condition generated by the electromagnetic wave radiated from the antenna 200.
Further, referring to fig. 3, fig. 3 is a schematic structural diagram of an arrangement of microstructures according to a preferred embodiment of the present application. The density of the microstructures 310 can be adjusted according to the distance between the circuit board 100 and the antenna 200, specifically, the closer the distance between the circuit board 100 and the antenna 200 is, the denser the microstructures 310 in the first spacer 300 are; the farther the distance between the circuit board 100 and the antenna 200 is, the more sparse the microstructures 310 are in the first spacer 300. Because the portion of the circuit board 100 close to the antenna 200 is stronger when the electromagnetic wave radiated by the antenna 200 is received, the microstructure 310 that needs to be disposed is denser, so as to more thoroughly absorb the electromagnetic wave radiated by the antenna 200, thereby preventing the electromagnetic wave radiated by the antenna 200 from being coupled to the circuit board 100, and if the circuit board 100 is coupled to the electromagnetic wave radiated by the antenna 200, harmonics are generated, and these harmonics are radiated by the antenna 200 to cause radiation stray, so that the present embodiment is helpful to improve the situation that the antenna 200 generates radiation stray.
Referring to fig. 4, fig. 4 is a schematic structural diagram of an electronic device according to another embodiment of the present application. In the present embodiment, the circuit board 100 includes:
the antenna comprises a circuit board body 110, a first extension portion 120 and a second extension portion 130, wherein the antenna 200 is electrically connected to the circuit board body 110, the second extension portion 130 is connected to the circuit board body 110 through the first extension portion 120, the first extension portion 120 is used for insulating and isolating the second extension portion 120 and the circuit board body 110, the second extension portion 130 forms the first isolation member, and the first isolation member is used for isolating electromagnetic waves radiated by the antenna 200 from being coupled to the circuit board body 110.
Optionally, the circuit board body 110 is made of a conductive material, the first extension portion 120 is made of an insulating material, the second extension portion 130 is made of a conductive material, and the first extension portion 120 insulates and isolates the second extension portion 130 from the circuit board body 110, so that the conductive performance of the circuit board body 110 is not interfered by the second extension portion 130, at this time, the second extension portion 130 forms the first isolating member, and the second extension portion 130 can isolate electromagnetic waves radiated by the antenna 200 from being coupled to the circuit board body 110, and if the circuit board body 110 is coupled to electromagnetic waves radiated by the antenna 200, harmonics are generated, and are radiated by the antenna 200 to cause radiation stray, so that the embodiment is helpful for improving the condition that the antenna 200 generates radiation stray.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an electronic device according to another embodiment of the present application. In this embodiment, the electronic device 10 further includes:
the fixing member 400 is made of an insulating material, the fixing member 400 is used for fixing the circuit board 100, and the fixing member 400 constitutes the first spacer.
In one embodiment, the fixing member 400 is a part of a structural member of the rear housing of the electronic device 10, optionally, the fixing member 400 and the rear housing of the electronic device 10 are formed in the same processing step, and optionally, the fixing member 400 and the rear housing of the electronic device 10 are formed in two separate structures and in different processing steps. The fixing member 400 is formed by in-mold injection molding, and constitutes a fixing member of the circuit board 100, and is used for fixing the circuit board 100 on the rear case of the electronic device 10. In this way, the structure of the electronic device 10 itself is used as the first spacer, and the first spacer and the fixing structure of the first spacer do not need to be additionally arranged, thereby contributing to the reduction of the processing procedures.
In another embodiment, the fixing member 400 is a part of a structural member of a support plate of the electronic device 10, optionally, the fixing member 400 and the support plate of the electronic device 10 are formed in the same processing step, and optionally, the fixing member 400 and the support plate of the electronic device 10 are formed in two separate structures and in different processing steps. The fixing member 400 is used for fixing the circuit board 100 on a supporting board of the electronic device 10. In this way, the structure of the electronic device 10 itself is used as the first spacer, and the first spacer and the fixing structure of the first spacer do not need to be additionally arranged, thereby contributing to the reduction of the processing procedures.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an electronic device according to another embodiment of the present application. In this embodiment, the electronic device 10 further includes:
the circuit board 100 includes a second spacer 310, a third spacer 320, and a fourth spacer 330, the second spacer 310 and the third spacer 320 are disposed opposite to each other, the second spacer 310 and the third spacer 320 intersect with the first spacer 300 respectively, the fourth spacer 330 is disposed opposite to the first spacer 300, and the fourth spacer 330 intersects with the second spacer 310 and the third spacer 320 respectively, the first spacer 300, the second spacer 310, the third spacer 320, and the fourth spacer 330 form an accommodation space 300a, and the circuit board 100 is disposed in the accommodation space 300 a.
In the present embodiment, the electronic device 10 includes a second spacer 310, a third spacer 320, and a fourth spacer 330 in addition to the first spacer 300. The first spacer 300, the second spacer 310, the third spacer 320 and the fourth spacer 330 form a spacer frame, the spacer frame forms an accommodating space 300a, and the circuit board 100 is disposed in the accommodating space 300 a. Because the isolation frame is disposed around the circuit board 100, the electromagnetic waves radiated by the antenna 200 can be better isolated from being coupled to the circuit board 100, and if the circuit board 100 is coupled to the electromagnetic waves radiated by the antenna 200, harmonics are generated, and the harmonics are radiated by the antenna 200 to cause radiation stray, so that the present embodiment helps to improve the condition that the antenna 200 generates radiation stray.
In an embodiment, when the first isolation member 300, the second isolation member 310, the third isolation member 320 and the fourth isolation member 330 are all metal plates, the first isolation member 300, the second isolation member 310, the third isolation member 320 and the fourth isolation member 330 form a metal shielding frame, and since the metal shielding frame is disposed around the circuit board 100, electromagnetic waves radiated by the antenna 200 can be better isolated from being coupled to the circuit board 100, so that the radiation stray of the antenna 200 can be further improved.
In another embodiment, when the first isolation member 300, the second isolation member 310, the third isolation member 320 and the fourth isolation member 330 are all made of wave-absorbing materials, the first isolation member 300, the second isolation member 310, the third isolation member 320 and the fourth isolation member 330 form a wave-absorbing frame, and the wave-absorbing frame is disposed around the circuit board 100, so that the electromagnetic waves radiated by the antenna 200 can be better absorbed and coupled to the circuit board 100, and the condition that the antenna 200 generates radiation stray can be improved.
Optionally, the distances from the first spacer 300, the second spacer 310, the third spacer 320 and the fourth spacer 330 to the circuit board 100 are smaller than the distances from the first spacer 300, the second spacer 310, the third spacer 320 and the fourth spacer 330 to the antenna 200.
Specifically, the distance from the first spacer 300 to the circuit board 100 and the distance from the first spacer 300 to the antenna 200 are taken as examples for detailed description. Referring to fig. 7, fig. 7 is a schematic diagram illustrating a positional relationship among the spacer, the circuit board, and the antenna according to an embodiment of the present disclosure.
The distance from the first spacer 300 to the circuit board 100 is denoted as a first distance d1, the distance from the first spacer 300 to the antenna 200 is denoted as a second distance d2, when d1< d2, the first spacer 300 is disposed closer to the circuit board 100 than the antenna 200, and at this time, the first spacer 300 has a more obvious isolation effect on the circuit board 100, so as to better block the electromagnetic wave radiated by the antenna 200 from being coupled to the circuit board 100, and if the circuit board 100 is coupled to the electromagnetic wave radiated by the antenna 200, harmonics are generated, and these harmonics are radiated by the antenna 200 to cause radiation stray, so that the present embodiment is helpful to improve the situation that the antenna 200 generates radiation stray.
Referring to fig. 8, fig. 8 is a schematic structural diagram of an electronic device according to another embodiment of the present application. In this embodiment, the electronic device 10 further includes:
the nonlinear device 500, the nonlinear device 500 is fixed on the circuit board 100, a fifth isolation member 340 is disposed in a region between the nonlinear device 500 and the circuit board 100, and the fifth isolation member 340 is used for isolating electromagnetic waves radiated by the antenna 200 coupled to the circuit board 100 from being transmitted to the nonlinear device 500.
Optionally, in another embodiment, the fifth isolating member 340 is a metal sheet, and the fifth isolating member 340 has a shielding effect on the electromagnetic wave radiated by the antenna 200 and coupled to the circuit board 100, so that the electromagnetic wave radiated by the antenna 200 and coupled to the circuit board 100 can be prevented from being coupled to the nonlinear device 500, and if the nonlinear device 500 is coupled to the electromagnetic wave radiated by the circuit board 100, harmonics are generated by the nonlinear effect of the nonlinear device 500, and the harmonics are radiated by the antenna 200 to cause radiation stray, so that this embodiment helps to improve the radiation stray situation of the antenna 200.
Optionally, in another embodiment, the fifth isolating member 340 is made of a wave-absorbing material, and the fifth isolating member 340 has an absorption effect on the electromagnetic wave radiated from the antenna 200 and coupled to the circuit board 100, so that the electromagnetic wave radiated from the antenna 200 and coupled to the circuit board 100 can be prevented from being coupled to the nonlinear device 500, and if the nonlinear device 500 is coupled to the electromagnetic wave radiated from the circuit board 100, harmonics are generated by the nonlinear effect of the nonlinear device 500, and the harmonics are radiated by the antenna 200 to cause radiation stray, so that this embodiment helps to improve the radiation stray condition of the antenna 200.
Referring to fig. 9, fig. 9 is a schematic structural diagram of an electronic device according to another embodiment of the present application. In the present embodiment, the circuit board 100 includes:
the antenna 200 is electrically connected to the circuit board body 110, the first extension portion 120 is formed by extending the insulating medium layer 140 in the circuit board body 110, and the first extension portion 120 forms the fifth spacer.
Specifically, the circuit board 100 includes a circuit board body 110, a first extension portion 120 and an insulating dielectric layer 140, where the first extension portion 120 is obtained by extending the insulating dielectric layer 140, and the first extension portion 120 forms a part of the insulating dielectric layer 140. The antenna 200 is electrically connected to the circuit board body 110, and since the insulating dielectric layer 140 is disposed between the circuit board body 110 and the first extension portion 120, the conductive performance of the circuit board body 110 is not interfered by the first extension portion 120, and the first extension portion 120 forms the fifth isolation member, that is, a part of the structure of the circuit board 100 itself forms the fifth isolation member, so that a fixing structure of the fifth isolation member is not required to be additionally disposed, the number of processing steps can be effectively reduced, and the processing cost can be further reduced.
Optionally, in an embodiment, the thickness of the fifth spacer 340 is smaller than the thickness of the first spacer 300. Specifically, please refer to fig. 10, fig. 10 is a schematic diagram illustrating a thickness relationship of a spacer according to a preferred embodiment of the present application.
Specifically, the thickness of the fifth separator 340 is denoted as h5, the thickness of the first separator 300 is denoted as h1, when h5< h1, it is illustrated that more first spacers 300 are provided in the area between the antenna 200 and the circuit board 100 than in the area between the circuit board 100 and the nonlinear device 500 per unit area, because the circuit board 100 is disposed closer to the antenna 200 than the nonlinear device 500, accordingly, the thickness of the fifth separator 340 is smaller than that of the first separator 300, it can more remarkably function to block the electromagnetic wave radiated from the antenna 200 from being coupled to the circuit board 100, and, if the circuit board 100 is coupled to the electromagnetic wave radiated from the antenna 200, harmonics are generated, these harmonics are radiated out through the antenna 200 to cause radiation strays, so this embodiment helps to improve the radiation strays generated by the antenna 200.
The application provides an electronic device, the electronic device includes: a circuit board; an antenna for radiating electromagnetic waves, the antenna being electrically connected to the circuit board; and a first isolating piece is arranged in the area between the antenna and the circuit board and is used for isolating the electromagnetic wave radiated by the antenna from being coupled to the circuit board. This application through set up first separator between antenna and circuit board, can avoid the electromagnetic wave coupling of antenna radiation to the circuit board on, and if the circuit board coupling come from the electromagnetic wave of antenna radiation, will produce the harmonic, these harmonics go out through antenna radiation again and will cause the radiation stray, consequently the technical scheme of this application helps improving the antenna and produces the spurious condition of radiation.
Referring to fig. 11, fig. 11 is a schematic structural diagram of an electronic device according to a preferred embodiment of the present application. The electronic device 10 may be any device having communication and memory capabilities. For example: the system comprises intelligent equipment with a network function, such as a tablet Computer, a mobile phone, an electronic reader, a remote controller, a Personal Computer (PC), a notebook Computer, vehicle-mounted equipment, a network television, wearable equipment and the like. The electronic device 10 includes a circuit board 100, an antenna 200, and a frame 1001, and reference is made to the foregoing description for the circuit board 100 and the antenna 200.
It should be understood that the above embodiments and the accompanying drawings illustrate components of the electronic device that are more relevant to the present application, and the following description is provided for the main components of the electronic device of the present application, so as to make the mutual cooperation relationship and the overall architecture of the components in the electronic device of the present application recognizable.
Referring to fig. 12, fig. 12 is a schematic structural diagram of the AA cross-sectional view in fig. 11. The electronic device 10 includes an antenna 200 and a circuit board 100. The antenna 200 is configured to receive an excitation signal and generate an electromagnetic wave signal according to the excitation signal. The circuit board 100 is electrically connected to the antenna 200, and the circuit board 100 is used to fix an excitation source 2000 generating an excitation signal and a matching circuit 3000. A first spacer 300 is disposed in an area between the antenna 200 and the circuit board 100, and the first spacer 300 is used for isolating electromagnetic waves radiated by the antenna 200 from being coupled to the circuit board 100.
The electronic device 10 further includes a screen 1000, the screen 1000 includes a touch panel 1700 and a display panel 1800, and the screen 1000 is spaced apart from the antenna 200.
The screen 1000 may be, but is not limited to, a Liquid Crystal Display (LCD) or an Organic Light Emitting Diode (OLED) screen. The screen 1000 may be a display panel 1800 having only a display function, a touch panel 1700 having only a touch function, or a combination of the display panel 1800 and the touch panel 1700 having both display and touch functions.
In the present embodiment, the antenna 200 may be at least a part of the middle frame 1001 of the electronic device 10 (see fig. 11), and in the present embodiment, the antenna 200 is described as an example of a part of the middle frame 1001 of the electronic device 10. The electronic device 10 further includes a middle frame 1001, a rear case 1300, and a sealing layer 1400. The middle frame 1001 may form a part of an external appearance of the electronic device 10, a part of the middle frame 1001 serves as the antenna 200, and the middle frame 1001 is spaced apart from the rear case 1300 to form a gap. The sealing layer 1400 is disposed in a gap between the middle frame 1001 and the rear case 1300, the sealing layer 1400 is used to combine the middle frame 1001 and the rear case 1300 together, the sealing layer 1400 has no shielding effect on electromagnetic wave signals, and the electromagnetic wave signals can be radiated through the sealing layer 1400.
In addition, the electronic device 10 further includes a front case 1200 and a cover plate 1100. The rear case 1300, the middle frame 1001, and the front case 1200 cooperate to form an accommodating space for accommodating the screen 1000, the circuit board 100, and the support plate 1600. In the embodiment, the screen 1000 includes a touch panel 1700 and a display panel 1800, that is, the screen 1000 includes the touch panel 1700 and the display panel 1800 which are stacked. The supporting plate 1600 is disposed adjacent to the display panel 1800, and the supporting plate 1600 is used for supporting the touch panel 1700 and the display panel 1800. The circuit board 100 is disposed on a side of the support plate 1600 away from the screen 1000. The rear case 1300 is disposed on a side of the circuit board 100 away from the supporting plate 1600, and the rear case 1300 is a battery cover of the electronic device 10. The cover plate 1100 is disposed on a side of the screen 1000 away from the support plate 1600, and is used for protecting the screen 1000. The cover plate 1100 is typically made of a transparent material, and the cover plate 1100 may be made of glass, but not limited to.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (9)
1. An electronic device, comprising:
a circuit board;
an antenna for radiating electromagnetic waves, the antenna being electrically connected to the circuit board;
a first isolating piece is arranged in an area between the antenna and the circuit board and used for isolating electromagnetic waves radiated by the antenna from being coupled to the circuit board, wherein the first isolating piece is made of a wave-absorbing material, and the wave-absorbing material is a carbon-based wave-absorbing material, a ceramic-based wave-absorbing material, a conductive polymer, a chiral material or a plasma material; or the surface of the first isolating piece, which is close to the antenna, is provided with a plurality of microstructures for absorbing electromagnetic waves, wherein the density of the microstructures is adjusted according to the distance between the circuit board and the antenna, the closer the distance between the circuit board and the antenna is, the denser the microstructures in the first isolating piece are, and the farther the distance between the circuit board and the antenna is, the sparser the microstructures in the first isolating piece are;
the electronic device further comprises a nonlinear device, the nonlinear device is fixed on the circuit board, a fifth isolating piece is arranged in a region between the nonlinear device and the circuit board, and the fifth isolating piece is used for isolating electromagnetic waves radiated by the antenna and coupled with the circuit board from being transmitted to the nonlinear device; the circuit board comprises a circuit board body and a first extension part, the first extension part is obtained by extending an insulating medium layer in the circuit board body, and the first extension part forms the fifth isolating part.
2. The electronic device of claim 1, wherein the electronic device further comprises:
the fixing piece is made of insulating materials and used for fixing the circuit board, and the fixing piece forms the first isolating piece.
3. The electronic device of claim 1, wherein the circuit board comprises:
the antenna comprises a circuit board body, a first extension part and a second extension part, wherein the antenna is electrically connected to the circuit board body, the second extension part is connected with the circuit board body through the first extension part, the first extension part is used for insulating and isolating the second extension part and the circuit board body, the second extension part forms a first isolation part, and the first isolation part is used for isolating electromagnetic waves radiated by the antenna from being coupled to the circuit board body.
4. The electronic device of claim 1, wherein the electronic device further comprises:
the circuit board comprises a second isolating piece, a third isolating piece and a fourth isolating piece, wherein the second isolating piece and the third isolating piece are arranged oppositely, the second isolating piece and the third isolating piece are intersected with the first isolating piece respectively, the fourth isolating piece and the first isolating piece are arranged oppositely, the fourth isolating piece is intersected with the second isolating piece and the third isolating piece respectively, the first isolating piece, the second isolating piece, the third isolating piece and the fourth isolating piece form an accommodating space, and the circuit board is arranged in the accommodating space.
5. The electronic device of claim 4, wherein a distance of the first spacer, the second spacer, the third spacer, and the fourth spacer to the circuit board is less than a distance of the first spacer, the second spacer, the third spacer, and the fourth spacer to the antenna.
6. The electronic device of claim 1, wherein the first spacer is a metal plate.
7. The electronic device of claim 1, wherein the fifth spacer is a metal sheet, and the fifth spacer is disposed on a surface of the circuit board adjacent to the nonlinear device.
8. The electronic device of claim 7, wherein the antenna is electrically connected to the circuit board body.
9. The electronic device of claim 7, wherein a thickness of the fifth spacer is less than a thickness of the first spacer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810045748.1A CN108281787B (en) | 2018-01-17 | 2018-01-17 | Electronic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810045748.1A CN108281787B (en) | 2018-01-17 | 2018-01-17 | Electronic device |
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| CN108281787A CN108281787A (en) | 2018-07-13 |
| CN108281787B true CN108281787B (en) | 2021-04-16 |
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| CN201810045748.1A Active CN108281787B (en) | 2018-01-17 | 2018-01-17 | Electronic device |
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| CN108281787A (en) | 2018-07-13 |
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