CN110994144A

CN110994144A - Antenna and electronic equipment

Info

Publication number: CN110994144A
Application number: CN201911147352.9A
Authority: CN
Inventors: 简宪静; 黄奂衢; 王义金
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-04-10
Also published as: WO2021098673A1

Abstract

The invention provides an antenna and an electronic device, wherein the antenna comprises a metal groove; the four metal sheets are arranged in the metal groove at intervals and are electrically connected with the bottom of the metal groove; and the coupling metal sheet is arranged among the four metal sheets and is in feed coupling with the four metal sheets. The embodiment of the invention can improve the radiation performance of the millimeter wave antenna.

Description

Antenna and electronic equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an antenna and an electronic device.

Background

With the rapid development of communication technology, multi-antenna communication has become the mainstream and future development trend of electronic devices, and in the process, millimeter wave antennas are gradually introduced to electronic devices. The millimeter wave antenna can provide higher communication speed, lower time delay, more simultaneous connection numbers and the like, and brings greater convenience to the life of users.

However, in the prior art, the millimeter wave antenna is easily affected by some components on the electronic device, resulting in poor radiation performance.

Disclosure of Invention

The embodiment of the invention provides an antenna and electronic equipment, and aims to solve the problem that a millimeter wave antenna of the electronic equipment is easily influenced by some components on the electronic equipment, so that the radiation performance is poor.

In a first aspect, an embodiment of the present invention provides an antenna, including: a metal groove; the four metal sheets are arranged in the metal groove at intervals and are electrically connected with the bottom of the metal groove; and the coupling metal sheet is arranged among the four metal sheets and is in feed coupling with the four metal sheets.

In a second aspect, an embodiment of the present invention provides an electronic device, which includes the above antenna.

The antenna of the embodiment of the invention comprises a metal groove; the four metal sheets are arranged in the metal groove at intervals and are electrically connected with the bottom of the metal groove; and the coupling metal sheet is arranged among the four metal sheets and is in feed coupling with the four metal sheets. The embodiment of the invention can improve the radiation performance of the millimeter wave antenna.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of an antenna according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of an antenna according to an embodiment of the present invention;

fig. 3 is a third schematic structural diagram of an antenna according to an embodiment of the present invention;

fig. 4 is a fourth schematic structural diagram of an antenna according to an embodiment of the present invention;

fig. 5 is a fifth schematic structural diagram of an antenna according to an embodiment of the present invention;

FIG. 6 is a graph of reflectance provided by an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;

fig. 8 is a second schematic structural diagram of an electronic device according to an embodiment of the invention;

fig. 9 is a third schematic structural diagram of an electronic apparatus according to an embodiment of the invention;

fig. 10 is a sixth schematic structural view of an antenna according to an embodiment of the present invention;

fig. 11 is a seventh schematic structural diagram of an antenna according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a coupling metal sheet according to an 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 some, not all, embodiments of the present invention. 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.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an antenna provided in an embodiment of the present invention, as shown in fig. 1, including a metal groove; the four metal sheets 1 are arranged in the metal groove at intervals and are electrically connected with the bottom of the metal groove; and the coupling metal sheets 2 are arranged among the four metal sheets 1, and are in feed coupling with the four metal sheets 1.

In this embodiment, the metal groove may be a square groove, the antenna may be disposed on the electronic device, and if the metal frame of the electronic device has a radian, the four metal sheets 1 may be designed to conform to the radian of the metal frame. The four metal sheets 1 may be symmetrically placed in the middle of the metal groove, that is, the distance between each metal sheet of the four metal sheets 1 and the metal groove is equal to the distance between the nearest adjacent side edge of the metal groove and the metal groove. The coupling metal piece 2 may be placed at the center of the groove, and the four ends of the coupling metal piece 2 may be directly connected to a feed probe (i.e., a conductive member) connected to a signal source.

For better understanding of the structure of the antenna, please refer to fig. 2 to 4, and fig. 2 to 4 are schematic structural views of the antenna provided by the embodiment of the present invention. First, as shown in fig. 2, 4 antenna elements are provided on the antenna at this time. Four

metal sheets

1 and 1 coupling metal sheet 2 are arranged in each metal groove, and the metal grooves are filled with insulating media 3.

Referring to fig. 3 and 4, fig. 3 may be understood as a perspective view of fig. 1, fig. 4 may be understood as a perspective view of fig. 2, and the above-described structure may be better understood through fig. 3 and 4.

Referring to fig. 5, fig. 5 is a schematic structural diagram of an antenna according to an embodiment of the present invention. Four round holes 4 are opened at the bottom of the metal groove, and four feed probes 5 can respectively penetrate through the four round holes 4 to be connected with the coupling metal sheet 2.

Referring to fig. 6, fig. 6 is a diagram of reflection coefficients provided by an antenna according to an embodiment of the invention. As shown in fig. 6, the-10 dB bandwidth can cover 24GHz-44GHz, the relative bandwidth reaches 58.8%, and the global mainstream 5G millimeter wave frequency band can be covered, so that the roaming experience is improved.

In this embodiment, the antenna may be disposed on an electronic device. Referring to fig. 7 to 9, fig. 7 to 9 are schematic structural diagrams of an electronic device according to an embodiment of the present invention.

First, as shown in fig. 7, the metal frame 6 of the electronic device may have a plurality of slots, for example, four slots, and the number and the position of the slots may be adjusted according to actual situations, such as the number of antennas and frequency band requirements, which is not limited in this embodiment of the present invention. The four slits may divide the metal frame 6 into four parts, i.e., a first side 61, a second side 62, a third side 63, and a fourth side 64. Non-millimeter wave antennas can be designed on the sides, for example, non-millimeter wave antennas such as 2G/3G/LTE/5G/GNSS/WIFI can be designed by the first side 61. The millimeter wave antenna (dotted line square frame position) can also be arranged on the first side 61 in the embodiment, namely, the millimeter wave antenna is integrated in the non-millimeter wave antenna, so that the space is saved, and the competitiveness of the product is improved.

As shown in fig. 8 and 9, the position of the dashed line frame indicates that the antenna array is disposed, and thus at least two antenna arrays are disposed on the metal frame. Of course, the positions of the antenna arrays may be adjusted according to actual situations, and this embodiment is not limited to this. The millimeter wave array antenna is designed at other positions of the metal frame of the electronic equipment, so that the millimeter wave array antennas of all parts work cooperatively, the influence of a handheld state on the performance of the millimeter wave array antenna can be reduced, and the coverage range of the millimeter wave antenna, such as CDF (compact disc) index, is improved.

In this embodiment, the millimeter wave array antenna is designed in the metal groove of the antenna, and the surrounding of the millimeter wave array antenna has a shielding function except for the radiation direction, so that the millimeter wave array antenna is prevented from being interfered by the surrounding environment or metal devices, and no other medium exists in the radiation direction, so that the performance of the millimeter wave array antenna is greatly improved, the performance including beam scanning is also greatly improved, and the wireless communication experience of users is improved. The metal frame design based on the electronic equipment can be realized, the metal texture of the electronic equipment is not influenced, the wireless experience of multiple millimeter wave frequency bands of users during global roaming is improved, and the metal frame is used as a reflector of the antenna to obtain higher gain.

Optionally, the coupling metal sheet 2 is connected to two pairs of differential signals.

In this embodiment, the coupling metal sheet 2 is connected to two pairs of differential signals, so as to facilitate differential feeding.

Optionally, each of the four metal sheets 1 includes a horizontal metal sheet 11 not intersecting with the bottom of the groove and a vertical metal sheet 12 electrically connected with the bottom of the groove, and the horizontal metal sheet 11 is vertically connected with the vertical metal sheet 12.

For better understanding of the above structure, please refer to fig. 10 and 11, and fig. 10 and 11 are schematic structural diagrams of an antenna according to an embodiment of the present invention. As shown in fig. 10 and 11, each of the four metal sheets 1 includes a horizontal metal sheet 11 not intersecting with the bottom of the groove and a vertical metal sheet 12 electrically connected with the bottom of the groove, and the horizontal metal sheet 11 is connected with the vertical metal sheet 12. Since the horizontal metal plate 11 is connected to the vertical metal plate 12, four metal plates 1 are easily coupled to the coupling metal plate 2.

Optionally, the metal grooves, the four metal sheets 1 and the coupling metal sheet 2 are filled with an insulating medium 3. The insulating medium is a non-metallic medium. The metal groove is filled with the non-metal medium, and both the metal sheet and the coupling metal sheet can be fixed in the metal groove.

In this embodiment, the metal grooves, the four metal sheets 1 and the coupling metal sheet 2 are filled with an insulating medium 3, so that the four metal sheets 1 and the coupling metal sheet 2 can be protected and fixed, and a good appearance can be maintained.

Optionally, the coupling metal sheet 2 includes a cross-shaped first portion and four second portions, each of which is a rectangular structure, the first portion is parallel to the bottom of the groove, the second portion is perpendicular to the bottom of the groove, and the four second portions are respectively connected to four free ends of the first portion and extend to the bottom of the groove. Each second portion is insulated from the slot bottom.

For better understanding of the above structure, please refer to fig. 12, and fig. 12 is a schematic structural diagram of a coupling metal sheet according to an embodiment of the present invention. As shown in fig. 12, the coupling metal plate 2 includes a first cross-shaped portion and four second cross-shaped portions, each of the second cross-shaped portions has a rectangular structure, the first cross-shaped portion is parallel to the bottom of the groove, the second cross-shaped portion is perpendicular to the bottom of the groove, and the four second cross-shaped portions are respectively connected to four free ends of the first cross-shaped portion and extend toward the bottom of the groove. Each second part is in a rectangular structure, the first part is parallel to the groove bottom of the metal groove, and the second part is perpendicular to the groove bottom of the metal groove.

Optionally, a feeding point is disposed on one side of each second portion close to the slot bottom, and feeding signals received by different feeding points of the two opposite feeding points are equal in magnitude and opposite in phase.

For a better understanding of the above structure, reference may also be made to fig. 10. The feed probe 51 may be probe V-, the feed probe 52 may be probe H +, the feed probe 53 may be probe V + and the feed probe 54 may be probe H-.

As shown in fig. 10, the probe V-and the probe V + may be metal cylinders, and are connected to a signal source for differentially feeding the antenna unit of the present embodiment, that is, the signals connected to the probe V-and the probe V + have equal amplitudes and are 180 ° out of phase. Due to the adoption of differential feeding, the common-mode rejection capability and the anti-interference capability can be improved, and the differential end-to-end isolation and the polarization purity can be improved. In a similar way, the probe H & lt- & gt and the probe H & lt + & gt are also connected to the differential feed source, when the signal source connected with the probe V & lt- & gt and the probe V & lt + & gt works simultaneously, the vertically polarized radiation wave can be excited, when the probe H & lt- & gt and the probe H & lt + & gt work simultaneously, the horizontally polarized radiation wave can be excited, dual-polarized radiation can be achieved, the probability of wire breakage is reduced, the stability and the signal quality of wireless communication are improved, and the wireless communication experience of a user is further improved.

Furthermore, when the probe V-and the probe V + work simultaneously with the signal source connected with the probe H-and the probe H +, MIMO can be formed, and the transmission rate of data can be improved. The feed probe penetrates through the dug hole of the metal cavity, so that the feed probe is insulated from the metal of the metal cavity, the hole can be filled with insulating medium materials, and the feed probe is connected to a signal source.

Generally, the cross-shaped coupling metal sheet is shorter than the horizontal metal sheet, the coupling metal sheet and the vertical metal sheet have a gap, the signal of the signal source is transmitted to the horizontal part through the vertical part (the second part) of the coupling metal sheet, and the horizontal part couples energy to the horizontal metal sheet and the vertical metal sheet.

In the embodiment, a new symmetrical self-complementary antenna structure is introduced, so that the bandwidth of the antenna can be greatly increased, the-10 dB bandwidth can cover the bandwidth from 24GHz to 44GHz, the relative bandwidth reaches 58.8%, and the worldwide mainstream 5G millimeter wave frequency band can be covered. And a differential feed mode is used, so that the common-mode rejection capability and the anti-interference capability can be improved, the differential end-to-end isolation can be improved, and the polarization purity can be improved. The dual-polarization antenna has the advantages that two pairs of differential orthogonal feed modes are used for the same antenna unit, dual polarization design is achieved, one mode can form an MIMO function to improve the transmission rate of data, the other mode can form dual polarization, the wireless connection capacity of the antenna can be improved, the probability of communication disconnection is reduced, and the communication effect and user experience are improved.

Optionally, the minimum distance between the coupling metal sheet 2 and the metal groove opening is greater than the minimum distance between the four metal sheets 1 and the groove opening.

In this embodiment, the minimum distance between the coupling metal sheet 2 and the metal groove opening is greater than the minimum distance between the four metal sheets 1 and the groove opening, so that the antenna has better radiation performance.

Optionally, the antenna is a millimeter wave antenna.

In this embodiment, the antenna is a millimeter wave antenna, which can make the antenna have better radiation performance.

Optionally, the radiator where the antenna is located is also a radiator of the first antenna, and the first antenna is a non-millimeter wave antenna.

In this embodiment, the radiator in which the antenna is located is also the radiator of the first antenna, and the first antenna is a non-millimeter wave antenna. Thus, the antenna may be implemented on a radiator of a cellular antenna or a non-cellular antenna, sharing a radiator. And the antenna can be integrated with a non-millimeter wave antenna which is taken as the antenna by a metal frame or a metal shell of the electronic equipment, namely, the millimeter antenna is compatible in the non-millimeter wave antenna which is taken as the antenna by the metal frame or the metal shell, so that the space is saved, and the competitiveness of the product is improved.

The antenna comprises a metal groove; the four metal sheets 1 are arranged in the metal groove at intervals and are electrically connected with the bottom of the metal groove; and the coupling metal sheets 2 are arranged among the four metal sheets 1, and are in feed coupling with the four metal sheets 1. The embodiment of the invention can improve the radiation performance of the millimeter wave antenna.

The embodiment of the invention also provides electronic equipment comprising the antenna.

In this embodiment, the electronic device may be applied to wireless communication design and use, such as wireless inter-city network, wireless wide area network, wireless local area network, wireless personal network, multiple input multiple output, radio frequency identification, near field communication, wireless charging, or FM, and may also be applied to rule test and actual design and use for human safety, health, and compatibility of electronic devices (such as hearing aids or heart rate regulators) worn.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An antenna, comprising:

a metal groove;

the four metal sheets are arranged in the metal groove at intervals and are electrically connected with the bottom of the metal groove;

and the coupling metal sheet is arranged among the four metal sheets and is in feed coupling with the four metal sheets.

2. The antenna of claim 1, wherein the coupling patch is coupled into two pairs of differential signals.

3. The antenna of claim 1 wherein said four metal pieces each include a horizontal metal piece that does not intersect said slot bottom and a vertical metal piece that is electrically connected to said slot bottom, said horizontal metal piece being connected to said vertical metal piece.

4. The antenna of claim 1, wherein the metal groove, the four metal sheets, and the coupling metal sheet are filled with an insulating medium therebetween.

5. The antenna of claim 1, wherein the coupling metal plate includes a first portion in the shape of a cross and four second portions, each second portion having a rectangular configuration, the first portion being parallel to the slot bottom, the second portions being perpendicular to the slot bottom, the four second portions respectively connecting four free ends of the first portions and extending toward the slot bottom.

6. The antenna of claim 5, wherein each second portion has a feed point disposed on a side thereof adjacent to the slot bottom, and wherein the feed signals received at different ones of any two opposite feed points are of equal magnitude and opposite phase.

7. The antenna of claim 1, wherein the minimum distance between the coupling metal sheet and the metal notch opening is greater than the minimum distance between the four metal sheets and the notch opening.

8. The antenna of claim 1, wherein the antenna is a millimeter wave antenna.

9. The antenna of claim 1, wherein the radiator on which the antenna is located is also a radiator of the first antenna, and the first antenna is a non-millimeter wave antenna.

10. An electronic device, characterized in that it comprises an antenna according to any one of claims 1 to 9.