CN111525276B - Electronic device - Google Patents
Electronic device Download PDFInfo
- Publication number
- CN111525276B CN111525276B CN202010287628.XA CN202010287628A CN111525276B CN 111525276 B CN111525276 B CN 111525276B CN 202010287628 A CN202010287628 A CN 202010287628A CN 111525276 B CN111525276 B CN 111525276B
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- Prior art keywords
- antenna assembly
- electronic device
- antenna
- rear cover
- wave
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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
- H01Q15/14—Reflecting surfaces; Equivalent structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The present disclosure provides an electronic device, including: a main board; the rear cover covers the main board, and an accommodating cavity is formed between the rear cover and the main board; at least one antenna assembly arranged in the accommodating cavity and electrically connected with the mainboard; and the reflecting structure is fixed on one surface of the rear cover facing the mainboard and arranged on one side of the antenna assembly, and is used for reflecting the surface wave formed by the antenna assembly and superposing the surface wave and the signal wave of the antenna assembly. The technical problem that the surface waves generated by the rear cover of the electronic equipment in the prior art cause loss of signals of the electronic equipment is solved.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to an electronic device.
Background
At present, due to the addition of various components and various limited design schemes, more and more electronic devices are available in the market, in which antenna radiators are disposed inside the devices. This arrangement, however, results in the signal waves of the antenna assembly having to pass through the back cover of the electronic device. When the signal wave passes through the back cover, a surface wave is generated at the back cover, and the surface wave causes energy dissipation and loss of the signal wave of the antenna assembly, so that the radiation efficiency and gain of the antenna assembly are reduced.
Disclosure of Invention
One object of the present disclosure is to solve the technical problem in the prior art that a surface wave generated by a rear cover of an electronic device causes loss of a signal of the electronic device.
In order to solve the technical problem, the following technical scheme is adopted in the disclosure:
according to one aspect of the present disclosure, there is provided an electronic device comprising
A main board;
the rear cover covers the main board, and an accommodating cavity is formed between the rear cover and the main board;
at least one antenna assembly arranged in the accommodating cavity and electrically connected with the mainboard;
and the reflecting structure is fixed on one surface of the rear cover facing the mainboard and arranged on one side of the antenna assembly, and is used for reflecting the surface wave formed by the antenna assembly and superposing the surface wave and the signal wave of the antenna assembly. According to the technical scheme, the method has the advantages that:
in the disclosure, a reflection structure is arranged on one side of an antenna assembly and fixed on a rear cover, surface waves generated at the position of the rear cover are reflected to the edge of electronic equipment, and are superposed with signal waves of the antenna assembly, so that signal waves of the antenna assembly in a specific direction are further enhanced, signals of other antenna assemblies are prevented from being interfered by the signal waves of the antenna assembly when the signal waves of the antenna assembly are transmitted to the other antenna assemblies, and the technical problem that the surface waves generated by the rear cover of the electronic equipment cause loss to signals of the electronic equipment in the prior art is solved.
Drawings
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of an electronic device according to yet another embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of an electronic device according to yet another embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of an electronic device according to yet another embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of an electronic device in another orientation in accordance with an embodiment shown in FIG. 1 of the present disclosure;
FIG. 6 is a schematic structural diagram of an electronic device according to yet another embodiment of the present disclosure;
FIG. 7 is a schematic structural diagram of an electronic device according to yet another embodiment of the present disclosure;
FIG. 8 is a schematic structural diagram of an electronic device according to yet another embodiment of the present disclosure;
FIG. 9 is a schematic structural diagram of an electromagnetic bandgap structure in accordance with an embodiment of the present disclosure;
FIG. 10 is a schematic structural diagram of an electromagnetic bandgap structure in another orientation of the one embodiment shown in FIG. 9 in accordance with the present disclosure;
fig. 11 is a schematic structural diagram of an electromagnetic bandgap structure according to yet another embodiment of the present disclosure.
Detailed Description
While this disclosure may be susceptible to embodiment in different forms, there is shown in the drawings and will herein be described in detail only some specific embodiments thereof with the understanding that the present description is to be considered as an exemplification of the principles of the disclosure and is not intended to limit the disclosure to that as illustrated herein.
Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the disclosure, and not to imply that every embodiment of the disclosure must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.
In the embodiments shown in the drawings, directional references (such as upper, lower, left, right, front and rear) are used to explain the structure and movement of the various elements of the disclosure not absolutely, but relatively. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indication of these directions changes accordingly.
Some embodiments of the disclosure are further elaborated below in conjunction with the drawings of the present specification. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Referring to fig. 1 and 5, an electronic device is provided, which includes a main board antenna assembly 10, a reflection structure 20, a main board 40, a rear cover 50 and a middle frame 60. The main board 40 is set up in the middle frame 60, the rear cover 50 is set up on the side of the middle frame 60 where the main board 40 is loaded, and is fixedly connected with the middle frame 60, and at the same time, the rear cover 60 covers the main board 40, and forms an accommodating cavity 90 with the main board 40. The antenna assembly 10 is disposed in the accommodation chamber 90 and electrically connected to the main board 40. The reflecting structure 20 is fixed to a surface of the rear cover 50 facing the main board 40 and is disposed on a side of the antenna assembly 10. During operation of the electronic device, the antenna assembly 10 emits a signal wave outward, the signal wave forms a surface wave on a side of the rear cover 50 facing the antenna assembly, a portion of the surface wave propagates toward the reflective structure 20, and the reflective structure 20 reflects the surface wave after reaching the reflective structure 20. The surface wave propagates to the rim of the middle frame 60 on the other side of the antenna assembly 10, and a part of the signal wave of the antenna assembly 10 also propagates to the rim direction of the middle frame 60, so that the surface wave and the signal wave of the antenna assembly 10 are superimposed into one signal wave at the rim of the middle frame 60, and simultaneously, the surface wave and the signal wave of the antenna assembly 10 interfere at the rim of the middle frame 60, so that the propagation direction of the signal wave of the antenna assembly 10 is deflected. Therefore, the surface wave reflected by the reflection structure 20 not only enhances the signal wave of the antenna assembly 10 in a fixed propagation direction, but also adjusts the propagation direction of the signal wave of the antenna assembly 10, thereby changing the antenna pattern and improving the coverage efficiency of the signal wave of the antenna assembly 10.
It is understood that, as shown in fig. 1, the antenna assembly 10 may be disposed on the main board 40, or as shown in fig. 4, it may be disposed on the antenna bracket 80 buckled on the main board 40. In this embodiment, the antenna assembly 10 may be disposed on the main board 40, which may simplify the structure of the electronic device and leave more internal space for the electronic device to arrange other electronic components. It will be appreciated that in one of the embodiments of the present disclosure, the antenna assembly 10 is a millimeter wave antenna assembly. The millimeter wave antenna assembly is placed in the whole environment, and the rear cover in the radiation direction of the antenna has a high dielectric constant, so that surface waves generated at the rear cover can cause high loss in a millimeter wave frequency band, and the antenna gain is reduced.
The reflective structure 20 may be an electromagnetic bandgap structure, or may be a metal plate reflective structure, in this embodiment, the reflective structure 20 is a mushroom-type electromagnetic bandgap structure as shown in fig. 9 and 10, and includes: dielectric substrate 21, metal patch 22, via connection 24, and ground plane 26. Width W of each metal patch 22, whichThe array is distributed over a ground plane 26. A gap with a width g is formed between every two adjacent metal patches 22, and a certain gap is formed between the metal patches and the ground plane 26. Via connection 24 is a via connection of the metal patch 22 to a ground plane 26, the metal via having a radius r. The dielectric substrate 21 is filled between the metal patch 22 and the ground plane 26, and has a thickness h. The dielectric substrate 21 has a relative dielectric constant of ∈rThe magnetic permeability is μ. Meanwhile, the equivalent impedance of the electromagnetic band gap structure is Z, and the resonant frequency of the electromagnetic band gap structure is f0The relative bandwidth is BW.
The frequency and bandwidth of the surface wave that can be reflected can be calculated according to the above parameters and the following formula:
L＝μh
it is understood that the size of the electromagnetic bandgap structure can be inversely derived according to the above formula in the implementation of the present disclosure.
It is understood that the electromagnetic bandgap structure may be a coplanar electromagnetic bandgap structure as shown in fig. 11 in addition to the mushroom-type electromagnetic bandgap structure. Because the coplanar electromagnetic band gap structure does not need a via hole at the center to be connected with a floor, but forms equivalent inductance through line connection among units, the thickness of the coplanar electromagnetic band gap structure is thinner than that of a mushroom-shaped electromagnetic band gap structure, the internal space of electronic equipment in the thickness direction can be effectively saved, the electronic equipment can be thinner and thinner, and the daily use of a user is more convenient.
It can be understood that, when the antenna assembly 10 operates, not only the surface wave is generated at the rear cover 50, but also the surface wave is generated on the main board 40 carrying the surface wave, and this part of the surface wave also generates loss to the antenna assembly 10, so in the embodiment shown in fig. 2, a reflection structure 20 is also provided on the main board 40 for reflecting the surface wave generated on the main board 40 and superposing the surface wave with the signal wave of the antenna assembly 10, so as to enhance the signal of the antenna signal wave.
It is understood that in the embodiment shown in fig. 3, the reflective structure 20 is a metal reflector plate disposed on one side of the antenna assembly 10. One end of the reflection structure 20 is fixedly connected to the rear cover 50, and the opposite end is fixedly connected to the main board 40, so that the reflection structure 20 can simultaneously reflect the surface wave generated at the rear cover 50 and the surface wave generated on the main board 40, and superimpose the surface wave on the signal wave of the antenna assembly 10, so as to enhance the signal of the antenna signal wave.
Referring to fig. 6, in the present embodiment, the antenna assembly 10 is disposed at a corner of the electronic device. The reflective structure 20 comprises a first reflective structure 21 and a second reflective structure 22. The first reflecting structure 21 is disposed on one side of the antenna assembly 10 away from the middle frame 60, and the second reflecting structure 22 is disposed on the other side of the antenna assembly 10 away from the middle frame 60, where the two sides are adjacent to each other, such that a surface wave generated by the antenna assembly 10 is transmitted to an edge of the electronic device through a shortest possible path, for example, at the middle frame 60, the middle frame 60 is diffracted and is superimposed and interfered with radiation emitted toward the middle frame 60, so as to increase a gain of the electronic device, and simultaneously deflect the electronic device, change a direction of the electronic device, and propagate toward one corner of the electronic device, so that a coverage efficiency of the electronic device is improved.
Referring to fig. 7, the antenna assembly 10 includes a first antenna assembly 11 and a second antenna assembly 12, wherein the first antenna assembly 11 is disposed along a top border of the middle frame 60, and the second antenna assembly 12 is disposed along a side border of the middle frame 60. The top frame is perpendicular to the side frames. The reflective structure 20 comprises a third reflective structure 23 and a fourth reflective structure 24, wherein the third reflective structure 23 is disposed along one corner of the middle frame 60, and one side thereof is adjacent to the top bezel and the other adjacent side thereof is adjacent to the side bezel. The second antenna component 12 is on the other side of the third reflective structure 23 opposite to the top rim, and the first antenna component 11 is on the other side opposite to the side rim. The fourth reflecting structure 24 is arranged on the side of the first antenna component 11 facing away from the top rim, while it is also located on the side of the second antenna component 12 facing away from the side rim, which is adjacent to both the first antenna component 11 and the second antenna component 12. The third reflection structure 23 and the fourth reflection structure 24 both isolate the first antenna assembly 11 from the second antenna assembly 12, and reflect the generated surface waves, instead of affecting the signal of the other antenna assembly, so that the generated surface waves do not interfere with each other, and the isolation of the antenna assembly 10 is improved.
Referring to fig. 8, in the present embodiment, the antenna assembly includes a plurality of antenna assemblies 10 sequentially disposed along a middle frame 60, a reflection structure 20 corresponding to each antenna assembly 10 is disposed on one side of each antenna assembly 10, and the reflection structure 20 is disposed on one side of each antenna assembly 10 away from the middle frame 60, so that a surface wave generated by the antenna assembly 10 is reflected toward the middle frame 60, and then is diffracted at the middle frame 60 and is superimposed and interfered with radiation emitted toward the middle frame 60, thereby increasing a gain thereof, and deflecting the radiation to change a direction thereof, so as to improve a coverage efficiency thereof. It can be understood that a reflection structure 20 may be disposed between two adjacent antenna assemblies 10, so as to reflect the surface waves generated by each antenna assembly 10 and avoid the surface waves from affecting signals of the other antenna assembly, so that the surface waves generated by each antenna assembly 10 do not interfere with each other, thereby improving the isolation of the antenna assemblies 10.
While the present disclosure has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present disclosure may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
While the present disclosure has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present disclosure may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (11)
1. An electronic device, comprising:
a middle frame;
the main board is arranged in the middle frame;
the rear cover covers the main board, an accommodating cavity is formed between the rear cover and the main board, and the periphery of the rear cover is fixedly connected with the middle frame;
at least one antenna assembly arranged in the accommodating cavity and electrically connected with the mainboard;
the reflecting structure is fixed on one surface of the rear cover facing the mainboard and is arranged on one side of the antenna component at intervals, and the reflecting structure is not overlapped with the projection of the antenna component on the rear cover; the reflection structure can reflect the surface wave formed by the antenna assembly, and the surface wave and the signal wave of the antenna assembly are superposed at the middle frame border.
2. The electronic device of claim 1, wherein the antenna assembly radiates a signal wave, the signal wave forms a surface wave on a side of the rear cover facing the antenna assembly, and the surface wave propagates toward the reflecting structure, is reflected by the reflecting structure, propagates toward the bezel frame on the other side of the antenna assembly, and is superimposed with the signal wave of the antenna assembly at the bezel frame to form a signal wave.
3. The electronic device according to claim 2, wherein the signal wave of the antenna assembly propagates toward the middle bezel, and the surface wave interferes with the signal wave of the antenna assembly at the middle bezel, so that the propagation direction of the antenna signal is deflected.
4. The electronic device of claim 1, wherein the reflective structure is an electromagnetic bandgap structure.
5. The electronic device of claim 4, wherein the electromagnetic bandgap structure is a coplanar electromagnetic bandgap structure.
6. The electronic device of claim 1, wherein the reflective structure comprises a first reflective structure and a second reflective structure, and the first reflective structure and the second reflective structure are respectively disposed on two adjacent sides of the antenna assembly.
7. The electronic device of claim 1, wherein the antenna assembly is a millimeter wave antenna assembly.
8. The electronic device of claim 1, wherein the antenna assembly comprises a first antenna assembly and a second antenna assembly, the first antenna assembly and the second antenna assembly being respectively disposed on two adjacent sides of the reflective structure, wherein the first antenna assembly is disposed on a first edge of the electronic device, wherein the second antenna assembly is disposed on a second edge of the electronic device, and wherein the first edge is perpendicular to the second edge.
9. The electronic device of claim 1, wherein the electronic device comprises a plurality of antenna assemblies and the plurality of reflective structures are disposed corresponding to the plurality of antenna assemblies, the plurality of antenna assemblies are disposed along an edge of the electronic device, and the reflective structures are disposed on a side of the antenna assemblies away from the edge of the electronic device.
10. The electronic device of claim 1, further comprising:
the antenna bracket is arranged in the accommodating cavity, and the antenna assembly is arranged on one surface, facing the rear cover, of the antenna bracket.
11. The electronic device according to claim 1, wherein the main board is also provided with a reflection structure for reflecting a surface wave formed on the main board during operation of the antenna assembly and superimposing the surface wave on a signal wave of the antenna assembly to enhance a signal of the antenna signal wave.
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| CN202010287628.XA CN111525276B (en) | 2020-04-13 | 2020-04-13 | Electronic device |
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| CN202010287628.XA CN111525276B (en) | 2020-04-13 | 2020-04-13 | Electronic device |
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| CN111525276B true CN111525276B (en) | 2022-01-04 |
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| CN114389006B (en) * | 2020-10-20 | 2022-12-30 | 荣耀终端有限公司 | Electronic equipment |
| CN112909542B (en) * | 2021-01-22 | 2022-05-06 | 惠州Tcl移动通信有限公司 | Millimeter wave antenna configuration assembly and mobile terminal |
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