CN110808453A

CN110808453A - Antenna unit and electronic equipment

Info

Publication number: CN110808453A
Application number: CN201911049756.4A
Authority: CN
Inventors: 邾志民; 马荣杰
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-02-18
Also published as: WO2021083212A1

Abstract

The embodiment of the invention provides an antenna unit and electronic equipment, relates to the technical field of communication, and aims to solve the problem that the antenna performance of the electronic equipment is poor due to the fact that the frequency range covered by a millimeter wave antenna of the conventional electronic equipment is small. The antenna unit comprises a first metal groove, a second metal groove arranged at the bottom of the first metal groove, M feeding parts arranged at the bottom of the first metal groove, and M feeding arms arranged in the first metal groove; each of the M feeding portions is electrically connected with the first end of one feeding arm and insulated from the first metal groove and the second metal groove, the M feeding arms are arranged in the first metal groove in a surrounding mode according to a first sequence, each of the M feeding arms is coupled with the second metal groove, and M is an integer larger than 1. The antenna unit is applied to electronic equipment.

Description

Antenna unit and electronic equipment

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to an antenna unit and electronic equipment.

Background

With the development of the fifth Generation mobile communication (5th-Generation, 5G) system and the wide application of electronic devices, the millimeter wave antenna is gradually applied to various electronic devices to meet the increasing use requirements of users.

At present, millimeter wave antennas in electronic devices are mainly implemented by using an Antenna In Package (AiP) technology. For example, as shown in fig. 1, an array antenna 11 with an operating wavelength of millimeter waves, a Radio Frequency Integrated Circuit (RFIC) 12, a Power Management Integrated Circuit (PMIC) 13 and a connector 14 may be packaged into a module 10 by AiP technology, where the module 10 may be referred to as a millimeter wave antenna module. The antenna in the array antenna may be a patch antenna, a yagi-uda antenna, or a dipole antenna.

However, since the antennas in the array antenna are usually narrow-band antennas (such as the patch antennas listed above), the coverage frequency range of each antenna is limited, but the millimeter wave frequency range planned in the 5G system is usually many, for example, n257(26.5-29.5GHz) frequency range mainly based on 28GHz and n260(37.0-40.0GHz) frequency range mainly based on 39GHz, and the like, so that the conventional millimeter wave antenna module may not cover the mainstream millimeter wave frequency range planned in the 5G system, thereby resulting in poor antenna performance of the electronic device.

Disclosure of Invention

The embodiment of the invention provides an antenna unit and electronic equipment, and aims to solve the problem that the antenna performance of the electronic equipment is poor due to the fact that the frequency range covered by a millimeter wave antenna of the conventional electronic equipment is small.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present invention provides an antenna unit, where the antenna unit includes a first metal groove, a second metal groove disposed at the bottom of the first metal groove, M feeding portions disposed at the bottom of the first metal groove, and M feeding arms disposed in the first metal groove; each of the M feeding portions is electrically connected with the first end of one feeding arm and insulated from the first metal groove and the second metal groove, the M feeding arms are arranged in the first metal groove in a surrounding mode according to a first sequence, each of the M feeding arms is coupled with the second metal groove, and M is an integer larger than 1.

In a second aspect, an embodiment of the present invention provides an electronic device, where the electronic device includes the antenna unit in the first aspect.

In the embodiment of the present invention, the antenna unit may include a first metal groove, a second metal groove disposed at the bottom of the first metal groove, M feeding portions disposed at the bottom of the first metal groove, and M feeding arms disposed in the first metal groove; each of the M feeding portions is electrically connected with the first end of one feeding arm and insulated from the first metal groove and the second metal groove, the M feeding arms are arranged in the first metal groove in a surrounding mode according to a first sequence, each of the M feeding arms is coupled with the second metal groove, and M is an integer larger than 1. By the scheme, the feed arm can be coupled with the second metal groove (which can be used as a radiator of the antenna unit), so that the feed arm can be coupled with the second metal groove under the condition that the feed arm receives an alternating current signal, so that the second metal groove can generate an induced current, and the feed arm and the second metal groove can radiate electromagnetic waves with certain frequency; and because there may be a plurality of current paths of the induced current generated by coupling the feeding arm with the second metal groove (for example, there may be a plurality of current paths such as a current path from the feeding arm to the second metal groove and then to the feeding arm, and a current path formed on the second metal groove), there may also be a plurality of frequencies of the electromagnetic wave generated by the current on the feeding arm via the second metal groove, so that the antenna unit may obtain a wider bandwidth, and thus the frequency band covered by the antenna unit may be increased. And because the M feed arms are arranged in the first metal groove in a surrounding manner according to the first sequence, the distance between each feed arm in the M feed arms is larger, so that the interference between the M feed arms can be reduced, the isolation of the port of the antenna unit can be improved, and the performance of the antenna unit can be further improved.

Drawings

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

fig. 2 is an exploded view of an antenna unit according to an embodiment of the present invention;

fig. 3 is a reflection coefficient diagram of an antenna unit according to an embodiment of the present invention;

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

fig. 5 is a top view of an antenna unit according to an embodiment of the present invention;

fig. 6 is a schematic diagram of isolation of an antenna unit according to an embodiment of the present invention;

fig. 7 is a cross-sectional view of an antenna unit provided in an embodiment of the present invention;

fig. 8 is a second exploded view of an antenna unit according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention;

fig. 10 is a second schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention;

fig. 11 is one of the radiation patterns of an antenna element provided by an embodiment of the present invention;

fig. 12 is a second radiation pattern of the antenna unit according to the second embodiment of the present invention;

fig. 13 is a bottom view of an electronic device according to an embodiment of the invention.

Description of reference numerals: 10-millimeter wave antenna module; 11-array antenna with millimeter wave working wavelength; 12-RFIC; 13-PMIC; 14-a connector; 20-an antenna element; 201-a first metal recess; 202-second metal groove; 203-a power feeding part; 203 a-a first end of the feeding portion; 204-feeding arm; 204a — a first end of the feed; 205 — a first insulator; 206 — a second insulator; 207-through hole; 208 — a third insulator; d1-diagonal 1; d2-diagonal 2; s1 — a first inner side wall; s2-a second inner side wall; l1 — first diagonal; l2 — second diagonal; 30-5G millimeter wave signals; 4-an electronic device; 40, a shell; 41-a first metal frame; 42-a second metal frame; 43 — a third metal frame; 44-a fourth metal frame; 45, a floor; 46 — a first antenna; 47-first groove.

In the embodiment of the present invention, coordinate axes in the coordinate system shown in the drawings are orthogonal to each other.

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 application.

The term "and/or" herein is an association relationship describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The symbol "/" herein denotes a relationship in which the associated object is or, for example, a/B denotes a or B.

The terms "first" and "second," and the like, in the description and in the claims of the present invention are used for distinguishing between different objects and not for describing a particular order of the objects. For example, first metal grooves and second metal grooves, etc. are used to distinguish between different metal grooves, rather than to describe a particular order of metal grooves.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the description of the embodiments of the present invention, unless otherwise specified, "a plurality" means two or more, for example, a plurality of antenna elements means two or more antenna elements, and the like.

Some terms/nouns referred to in the embodiments of the present invention are explained below.

Coupling: it is meant that there is a close fit and interaction between the inputs and outputs of two or more circuit elements or electrical networks and that energy can be transferred from one side to the other by interaction.

"coupling" in embodiments of the present invention may be used to indicate that the components (e.g., the M feed arms and the second metal groove in embodiments) that are coupled may be coupled in the case of the antenna element being operated; these components are insulated from each other in the case of non-operation of the antenna element.

Alternating current signals: which is a signal that the direction of the current changes.

Multiple-input multiple-output (MIMO) technology: which refers to a technique for transmitting or receiving a signal using a plurality of antennas at a transmission end (i.e., a transmitting end and a receiving end) to improve communication quality. In this technique, a signal can be transmitted or received through a plurality of antennas at a transmission end.

Relative dielectric constant: a physical parameter for characterizing dielectric or polarization properties of the dielectric material.

Floor board: refers to a portion of an electronic device that can act as a virtual ground. Such as a Printed Circuit Board (PCB) in an electronic device, a metal bezel, or a display screen of an electronic device.

The embodiment of the invention provides an antenna unit and electronic equipment, wherein the antenna unit comprises a first metal groove, a second metal groove arranged at the bottom of the first metal groove, M feeding parts arranged at the bottom of the first metal groove and M feeding arms arranged in the first metal groove; each of the M feeding portions is electrically connected with the first end of one feeding arm and insulated from the first metal groove and the second metal groove, the M feeding arms are arranged in the first metal groove in a surrounding mode according to a first sequence, each of the M feeding arms is coupled with the second metal groove, and M is an integer larger than 1. By the scheme, the feed arm can be coupled with the second metal groove (which can be used as a radiator of the antenna unit), so that the feed arm can be coupled with the second metal groove under the condition that the feed arm receives an alternating current signal, so that the second metal groove can generate an induced current, and the feed arm and the second metal groove can radiate electromagnetic waves with certain frequency; and because there may be a plurality of current paths of the induced current generated by coupling the feeding arm with the second metal groove (for example, there may be a plurality of current paths such as a current path from the feeding arm to the second metal groove and then to the feeding arm, and a current path formed on the second metal groove), there may also be a plurality of frequencies of the electromagnetic wave generated by the current on the feeding arm via the second metal groove, so that the antenna unit may obtain a wider bandwidth, and thus the frequency band covered by the antenna unit may be increased. And because the M feed arms are arranged in the first metal groove in a surrounding manner according to the first sequence, the distance between each feed arm in the M feed arms is larger, so that the interference between the M feed arms can be reduced, the isolation of the port of the antenna unit can be improved, and the performance of the antenna unit can be further improved.

The antenna unit provided by the embodiment of the present invention may be applied to an electronic device, and may also be applied to other electronic devices that need to use the antenna unit, and may be determined specifically according to actual use requirements, and the embodiment of the present invention is not limited. The following describes an exemplary antenna unit provided in an embodiment of the present invention, taking an application of the antenna unit to an electronic device as an example.

The following describes an antenna unit provided in an embodiment of the present invention by way of example with reference to the accompanying drawings.

As shown in fig. 2, the antenna unit 20 may include a first metal groove 201, a second metal groove 202 disposed at the bottom of the first metal groove 201, M feeding portions 203 disposed at the bottom of the first metal groove 201, and M feeding arms 204 disposed in the first metal groove 201.

Each of the M feeding portions 203 may be electrically connected to the first end 204a of one feeding arm and insulated from the first metal groove 201 and the second metal groove 202, the M feeding arms 204 may be circumferentially disposed in the first metal groove 201 according to a first sequence, and each of the M feeding arms 204 may be coupled to the second metal groove 202, where M is an integer greater than 1.

It can be understood that the second metal groove may serve as a radiator of the antenna unit provided in the embodiment of the present invention.

It should be noted that, in the embodiment of the present invention, in order to illustrate the structure of the antenna unit more clearly, fig. 2 is an exploded view of the antenna unit, that is, an exploded view of the antenna unit is illustrated in a state where all components of the antenna unit are separated. In practical implementation, the M feeding portions and the M feeding arms are all disposed in the first metal groove, that is, the first metal groove, the second metal groove, the M feeding portions and the M feeding arms form a whole, so as to form an antenna unit provided in the embodiment of the present invention.

In addition, the feeding portion 203 and the first end 204a of the feeding arm in fig. 2 are not shown in an electrically connected state, and in actual implementation, the feeding portion 203 may be electrically connected to the first end 204a of the feeding arm.

Optionally, in this embodiment of the present invention, the first sequence may be a clockwise sequence or a counterclockwise sequence. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

In the embodiment of the present invention, for example, the M feeding arms are arranged around the first metal groove in a clockwise order, and assuming that the M feeding arms are four feeding arms (the structures of the four feeding arms may be the same), the four feeding arms may be arranged in the first metal groove in a clockwise order in order from the first end of the first feeding arm to the second end of the first feeding arm, from the first end of the second feeding arm to the second end of the second feeding arm, from the first end of the third feeding arm to the second end of the third feeding arm, and finally from the first end of the fourth feeding arm to the second end of the fourth feeding arm.

It should be noted that, in the embodiment of the present invention, when the M feeding arms are circumferentially disposed in the first metal groove according to the first order, the distance between the first ends of each of the M feeding arms is relatively large, so that mutual interference between the feeding arms can be reduced.

In order to more clearly describe the antenna unit and the operating principle thereof provided by the embodiment of the present invention, an example of the operating principle of the antenna unit for transmitting and receiving signals provided by the embodiment of the present invention is specifically described below by taking one antenna unit as an example.

When the electronic equipment sends 5G millimeter wave signals, a signal source in the electronic equipment sends out alternating current signals, and the alternating current signals can be transmitted to the feeding arm through the feeding portion. Then, after the feeding arm receives the alternating current signal, the feeding arm may be coupled with the second metal groove, so that the second metal groove generates an induced current, and then the second metal groove may radiate electromagnetic waves of multiple frequencies to the outside (since there may be multiple current paths of the induced current generated by the feeding arm coupled with the second metal groove, for example, there may be multiple current paths from the feeding arm to the second metal groove and then to the feeding arm, current paths formed on the second metal groove, and the like, there may also be multiple frequencies of the electromagnetic waves radiated by the current on the feeding arm via the second metal groove). In this way, the electronic device can transmit signals of different frequencies through the antenna unit provided by the embodiment of the invention.

By way of further example, in the embodiment of the present invention, when the electronic device receives a 5G millimeter wave signal, electromagnetic waves in a space where the electronic device is located may excite the second metal groove, so that the second metal groove may generate an induced current. After the second metal groove generates the induced current, the second metal groove may be coupled with the feeding arm, so that the feeding arm generates the induced current (i.e., the induced ac signal). Then, the feeding arm may input the alternating current signal to a receiver in the electronic device through the feeding section, so that the electronic device may receive a 5G millimeter wave signal transmitted by another device. That is, the electronic device may receive signals through the antenna unit provided by the embodiment of the present invention.

The performance of the antenna unit provided by the embodiment of the present invention is exemplarily described below with reference to fig. 3.

Exemplarily, as shown in fig. 3, a reflection coefficient diagram of an antenna unit provided in an embodiment of the present invention is shown when the antenna unit operates. When the return loss is less than-10 dB, the antenna unit may cover a frequency range of 26.249GHz-40.054GHz, which may also include a plurality of major millimeter wave bands (e.g., n257, n260, and n 261). Therefore, the antenna unit provided by the embodiment of the invention can cover most of 5G millimeter wave frequency bands, so that the antenna performance of the electronic equipment can be improved.

In the embodiment of the present invention, the points a and b in fig. 3 are used to mark the values of the return loss, and as can be seen from fig. 3, the value of the return loss marked by the point a is-9.8622 dB, and the value of the return loss marked by the point b is-10.014 dB.

In addition, when the return loss of one antenna unit is less than-10 dB, the antenna unit not only can meet the actual use requirement, but also has excellent antenna performance. Namely, the antenna unit provided by the embodiment of the invention can ensure better performance on the basis of meeting the actual use requirement.

The embodiment of the invention provides an antenna unit, wherein a feed arm can be coupled with a second metal groove (which can be used as a radiator of the antenna unit), so that the feed arm can be coupled with the second metal groove under the condition that the feed arm receives an alternating current signal, so that the second metal groove can generate an induced current, and the feed arm and the second metal groove can radiate electromagnetic waves with certain frequency; and because there may be a plurality of current paths of the induced current generated by coupling the feeding arm with the second metal groove (for example, there may be a plurality of current paths such as a current path from the feeding arm to the second metal groove and then to the feeding arm, and a current path formed on the second metal groove), there may also be a plurality of frequencies of the electromagnetic wave generated by the current on the feeding arm via the second metal groove, so that the antenna unit may obtain a wider bandwidth, and thus the frequency band covered by the antenna unit may be increased. And because the M feed arms are arranged in the first metal groove in a surrounding manner according to the first sequence, the distance between each feed arm in the M feed arms is larger, so that the interference between the M feed arms can be reduced, the isolation of the port of the antenna unit can be improved, and the performance of the antenna unit can be further improved.

Optionally, in the embodiment of the present invention, the opening of the first metal groove may be larger than the opening of the second metal groove. That is, the opening area of the first metal groove may be larger than the opening area of the second metal groove.

In the embodiment of the present invention, as shown in fig. 2, in the direction indicated by the Z axis, the second metal groove 202 is disposed at the bottom of the first metal groove 201, and the opening area of the first metal groove 201 is equal to the bottom area of the first metal groove 201, so that when the opening of the first metal groove 201 is larger than the opening of the second metal groove 202, the second metal groove 202 is not shielded by the first metal groove 201.

In the embodiment of the invention, the second metal groove is arranged at the bottom of the first metal groove, so that the second metal groove can be conveniently arranged at the bottom of the first metal groove under the condition that the opening of the second metal groove is smaller than the opening of the first metal groove, and the manufacturing process of the antenna unit can be simplified.

Optionally, in an embodiment of the present invention, the first metal groove may be a rectangular groove or a circular groove, and the second metal groove may also be a rectangular groove or a circular groove.

It can be understood that when the first metal groove is a rectangular groove, the second metal groove may be a rectangular groove or a circular groove; when the first metal groove is a circular groove, the second metal groove can be a rectangular groove or a circular groove.

In practice, of course, the first metal groove and the second metal groove may also be metal grooves with any other possible shapes, which may be determined according to actual use requirements, and the embodiment of the present invention is not limited.

In the embodiment of the present invention, the shape of the first metal groove may be used to indicate the opening shape of the first metal groove. That is, when the first metal groove is a rectangular groove, the opening shape of the first metal groove may be rectangular; when the first metal groove is a circular groove, the opening of the first metal groove may be circular.

Accordingly, the shape of the second metal groove described above may be used to indicate the opening shape of the second metal groove.

It should be noted that, in the embodiments of the present invention, the first metal groove and the second metal groove are all exemplified by grooves (rectangular grooves) having the same shape, and the embodiments of the present invention are not limited in any way. In practical implementation, the shapes of the first metal groove and the second metal groove may be the same or different.

In the embodiment of the invention, because the performance of the antenna unit composed of the metal grooves with different shapes (including the first metal groove and the second metal groove) may be different, the metal grooves with the proper shapes can be selected as the first metal groove and the second metal groove in the antenna unit provided by the embodiment of the invention according to the actual use requirement of the antenna unit, so that the antenna unit can work in a 5G millimeter wave frequency band.

Furthermore, because the shape of the antenna unit formed by the metal grooves with regular shapes is relatively stable, the performance of the antenna unit provided by the embodiment of the invention can be relatively stable by setting the first metal groove and/or the second metal groove as the grooves with regular shapes (such as rectangular grooves or circular grooves), so that the performance of the antenna unit can be improved.

Optionally, in an embodiment of the present invention, any diagonal line of the opening of the first metal groove may be not parallel to any diagonal line of the opening of the second metal groove.

It should be noted that, in the embodiment of the present invention, the diagonal line of the opening of the first metal groove may be used to indicate the diagonal line of a closed shape (for example, a rectangle or a hexagon) formed at the inner edge of the first metal groove. Accordingly, the diagonal line of the opening of the second metal groove may be used to indicate the diagonal line of the closed shape (e.g., rectangle or hexagon, etc.) formed by the inner edge of the second metal groove.

In the embodiment of the present invention, for convenience of description, an exemplary explanation is given below with respect to one diagonal line (hereinafter, referred to as diagonal line 1) of the opening of the first metal groove and one diagonal line (hereinafter, referred to as diagonal line 2) of the opening of the second metal groove.

In the embodiment of the present invention, the diagonal 1 is not parallel to the diagonal 2, which can be understood as: the angle between the diagonal 1 and the diagonal 2 (hereinafter referred to as the first angle) is greater than 0 ° and less than 180 °.

In this embodiment of the present invention, the first included angle may be determined according to performance of the antenna unit provided in the embodiment of the present invention.

Optionally, in an embodiment of the present invention, when the first metal groove and the second metal groove are both rectangular grooves, the first included angle (denoted as θ) may be greater than 0 degree and less than or equal to 45 degrees.

It should be noted that, in the embodiment of the present invention, the range of the first included angle is greater than 45 ° < θ and less than or equal to 90 °, or greater than 90 ° < θ and less than or equal to 135 °, or greater than 135 ° < θ and less than or equal to 180 °, and the position relationship between the diagonal line 1 and the diagonal line 2 is the same as the position relationship between the diagonal line 1 and the diagonal line 2 when the range of the first included angle is greater than 0 ° < θ and less than or equal to 45 °.

For example, as shown in fig. 2, the angle between the diagonal line (i.e., diagonal line 1) D1 of the opening of the first metal groove 201 and the diagonal line (i.e., diagonal line 2) D2 of the opening of the second metal groove 202 (i.e., the first angle) may be 45 degrees.

In the embodiment of the invention, because the second metal groove is arranged at different positions at the bottom of the first metal groove, the performance of the antenna unit is possibly different, so that the second metal groove can be arranged at the bottom of the first metal groove according to the actual use requirement of the antenna unit, and the antenna unit can work in a 5G millimeter wave frequency band.

Optionally, in an embodiment of the present invention, the M feeding portions may penetrate through the bottom of the first metal groove.

In particular, in practical implementation, as shown in fig. 2, the first end 203a of the feeding portion may be electrically connected to the first end 204a of the feeding arm, and the second end (not shown in fig. 2) of the feeding portion may be electrically connected to one signal source in the electronic device (e.g., a 5G signal source in the electronic device). In this way, the current of the signal source in the electronic device may be transmitted to the feeding arm through the feeding portion, and then coupled to the second metal groove through the feeding arm, so that the second metal groove may generate an induced current, and thus the second metal groove may radiate an electromagnetic wave with a certain frequency, and thus, the antenna unit provided by the embodiment of the present invention may radiate a 5G millimeter wave signal in the electronic device.

Optionally, in the embodiment of the present invention, each of the M feeding portions may form an "L-shaped" feeding structure with one feeding arm connected thereto.

Optionally, in an embodiment of the present invention, a projection of each of the M feeding arms on the first plane may intersect with an opening edge of the second metal groove. The first plane may be a plane where an opening of the second metal groove is located.

In the embodiment of the present invention, in a case where a projection of each of the M feed arms on the first plane intersects with an opening edge of the second metal groove, each of the M feed arms may satisfy a coupling relationship with the second metal groove (i.e., in a case where the antenna unit is operated, each of the M feed arms is coupled with the second metal groove, and in a case where the antenna unit is not operated, each of the M feed arms is insulated from the second metal groove).

Alternatively, in the embodiment of the present invention, one feeding arm (any one of the M feeding arms) may be a symmetrical feeding arm. For example, the structure of the feeding arm may be symmetrical in the horizontal direction, may be symmetrical in the vertical direction, and the like. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Optionally, in an embodiment of the present invention, one feeding arm (i.e., any one of the M feeding arms) may be any one of the following feeding arms: a rectangular feed arm, a "T" feed arm, and a "Y" feed arm.

Of course, in practical implementation, the above-mentioned one feeding arm may also be any other possible feeding arm. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Optionally, in this embodiment of the present invention, the M feeding arms may be the same feeding arm (for example, the M feeding arms are all "Y" -shaped feeding arms), or may be different feeding arms (for example, a part of the M feeding arms is a "T" -shaped feeding arm, and another part of the M feeding arms is a "Y" -shaped feeding arm). The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

For example, the M feeding arms may be all "T" shaped feeding arms 204 as shown in fig. 2, or all "Y" shaped feeding arms 204 as shown in fig. 4.

In the embodiment of the present invention, since the coupling amount of the feeding arms in different forms (such as shape, material, structure, and the like) may be different when the feeding arms are coupled with the second metal groove, and the impedance requirements of the feeding arms in different forms may also be different, that is, the influence of the feeding arms in different forms on the working performance of the antenna unit may be different, a suitable feeding arm may be selected according to the actual use requirement of the antenna unit, so that the antenna unit may work in a suitable frequency range.

Alternatively, in the embodiment of the present invention, the M feeding arms may be disposed in the first metal groove along the inner sidewall of the first metal groove in the order from the first end of the feeding arm to the second end of the feeding arm according to the first order.

That is, in the first order, the second end of one of the M feeding arms may be adjacent to the first end of the next feeding arm adjacent to the one feeding arm.

Illustratively, as shown in fig. 5, a top view of the antenna unit provided in the embodiment of the present invention in the direction opposite to the Z-axis (e.g., the coordinate system shown in fig. 2) is shown. Assuming that the first sequence is a clockwise sequence, the M feeding arms are four feeding arms, namely a first feeding arm 2040, a second feeding arm 2042, a third feeding arm 2041 and a fourth feeding arm 2043. The four feeding arms may be sequentially disposed in the metal grooves in a clockwise order from the first end of the first feeding arm 2040 to the second end of the first feeding arm 2040, to the first end of the second feeding arm 2042, then from the first end of the second feeding arm 2042 to the second end of the second feeding arm 2042, then to the first end of the third feeding arm 2041, then from the first end of the third feeding arm 2041 to the second end of the third feeding arm 2041, then to the first end of the fourth feeding arm 2043, and finally from the first end of the fourth feeding arm 2043 to the second end of the fourth feeding arm 2043, then to the first end of the first feeding arm 2040. As can be seen from fig. 5, the first feeding arm, the second feeding arm, the third feeding arm and the fourth feeding arm may form a loop-like shape. That is, the first feeding arm, the second feeding arm, the third feeding arm and the fourth feeding arm are circumferentially disposed in the metal groove.

In the embodiment of the present invention, since the current flowing through the feeding arms has directivity when the antenna unit operates, the distance between the first ends of different feeding arms can be increased by arranging the M feeding arms in the first order (that is, the distances between the first end of one feeding arm and the first ends of other feeding arms are relatively large), so that the interference between different feeding arms can be reduced, and the isolation of the ports of the antenna unit can be improved. And because the feeding arms are arranged along the inner side wall of the first metal groove, the feeding arms are distributed and dispersed in the first metal groove, so that the mutual interference among the feeding arms can be further reduced, and the isolation degree of the ports of the antenna unit can be further improved.

Optionally, in an embodiment of the present invention, the first metal groove is a rectangular groove, the M feeding arms may include a first feeding arm, a second feeding arm, a third feeding arm, and a fourth feeding arm, and the first feeding arm, the second feeding arm, the third feeding arm, and the fourth feeding arm are sequentially disposed in the first metal groove along an inner sidewall of the first metal groove.

The first feeding arm and the third feeding arm may be parallel to a first inner side wall of the first metal groove, the second feeding arm and the fourth feeding arm may be parallel to a second inner side wall of the first metal groove, and the first inner side wall is perpendicular to the second inner side wall.

It should be noted that, in the embodiment of the present invention, the first feeding arm, the second feeding arm, the third feeding arm, and the fourth feeding arm may also be disposed around the first metal groove in any other possible manner, for example, the first feeding arm and the third feeding arm may be parallel to the second inner side wall of the first metal groove, and the second feeding arm and the fourth feeding arm may be parallel to the first inner side wall of the first metal groove. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

For example, as shown in fig. 5, the first feeding arm 2040 and the third feeding arm 2041 may be parallel to an inner sidewall S1 (i.e., the first inner sidewall) of the first metal groove, and the second feeding arm 2042 and the fourth feeding arm 2043 may be parallel to an inner sidewall S2 (i.e., the second inner sidewall) of the first metal groove. And as can be seen in fig. 5, the inner sidewall S1 is perpendicular to the inner sidewall S2.

It should be noted that, for clarity, the relationship between the components in the antenna unit is illustrated, the second metal groove in fig. 5 is filled with a filling mark, which is used to indicate that the second metal groove is disposed at the bottom of the first metal groove.

In addition, since fig. 5 is a top view of the antenna unit provided by the embodiment of the present invention in the direction opposite to the Z-axis, the coordinate system illustrated in fig. 5 only illustrates the X-axis and the Y-axis.

Alternatively, in an embodiment of the present invention, the first feeding arm and the third feeding arm may form a feeding arm set (hereinafter, referred to as a first feeding arm set), and the second feeding arm and the fourth feeding arm may form a feeding arm set (hereinafter, referred to as a second feeding arm set).

It will be appreciated that the first and second sets of feed arms may be two sets of feed arms distributed orthogonally.

As can be seen from fig. 5, the distance between the first feeding arm 2040 and the third feeding arm 2041 is relatively large, and the distance between the second feeding arm 2042 and the fourth feeding arm 2043 is relatively large.

In the embodiment of the present invention, since the larger the distance between the feeding arms in one feeding arm group is, the smaller the influence of the feeding arm group on the other feeding arm groups is, the distance between the feeding arms in the two feeding arm groups (the first feeding arm group and the second feeding arm group) may be increased by sequentially disposing the first feeding arm, the second feeding arm, the third feeding arm and the fourth feeding arm in the first metal groove along the inner side wall of the first metal groove, so that in the operation process of the antenna unit, the mutual influence between the feeding arm groups may be reduced, and thus the interference between different polarizations may be reduced.

Optionally, in an embodiment of the present invention, the first feeding arm set and the second feeding arm set may be two feeding arm sets with different polarizations. In particular, the first feeding arm set may be a feeding arm set of a first polarization, and the second feeding arm set may be a feeding arm set of a second polarization.

Optionally, in this embodiment of the present invention, the first polarization and the second polarization may be polarizations in different directions. Specifically, the first polarization may be +45 ° polarization or horizontal polarization; the second polarization may be-45 ° polarization or vertical polarization, etc.

For example, as shown in fig. 5, the first feeding arm group formed by the first feeding arm 2040 and the third feeding arm 2041 may be a horizontally polarized feeding arm group (i.e., the first polarization); the second feeding arm group composed of the second feeding arm 2042 and the fourth feeding arm 2043 may be a feeding arm group of vertical polarization (i.e., the above-mentioned second polarization).

It should be noted that, in the embodiment of the present invention, when the antenna unit provided in the embodiment of the present invention is viewed from the Z axis in a reverse direction, the feeding portion is not visible, and therefore, the feeding portion in fig. 5 is illustrated by a dotted line.

Of course, in practical implementation, the first polarization and the second polarization may be any other possible polarization. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

In the embodiment of the present invention, the first feeding arm group and the second feeding arm group may be two feeding arm groups with different polarizations (a first polarization and a second polarization), so that the antenna unit provided in the embodiment of the present invention may form a dual-polarized antenna unit, and thus, the wireless connection capability of the antenna unit may be improved, and thus, the probability of communication disconnection of the antenna unit may be reduced, that is, the communication capability of the antenna unit may be improved.

Optionally, in the embodiment of the present invention, the feeding arms in the same feeding arm group may operate simultaneously. That is, when one feeding arm in the first feeding arm group is in the working state, the other feeding arm in the first feeding arm group can also be in the working state. Correspondingly, when one feeding arm in the second feeding arm group is in the working state, the other feeding arm in the second feeding arm group can also be in the working state.

Optionally, in the embodiment of the present invention, when the feeding arm in the first feeding arm group is in the working state, the feeding arm in the second feeding arm group may be in the working state, or may not be in the working state. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

In the embodiment of the present invention, since the antenna unit may include two feeding arm sets, the electronic device may send and receive signals through the two feeding arm sets in the antenna unit, that is, the antenna unit provided in the embodiment of the present invention may implement the MIMO technology, so that the communication capacity and the communication rate of the antenna unit may be improved, that is, the data transmission rate of the antenna unit may be improved.

Optionally, in the embodiment of the present invention, the M feeding arms may all be located on the same plane.

It can be understood that, in the embodiment of the present invention, in a case where the M feeding arms are all located on the same plane, distances between the M feeding arms and the second metal groove disposed at the bottom of the first metal groove are all equal.

In an embodiment of the present invention, because the distances between the M feeding arms and the second metal groove are different, coupling parameters when the M feeding arms are coupled with the second metal groove may be different, for example, induced currents generated by the M feeding arms and the second metal groove may be different, and therefore, the distances between the M feeding arms and the second metal groove may be flexibly set according to actual use requirements of the antenna unit (for example, a frequency range covered by the antenna unit).

In addition, since the distances between the M feeding arms and the second metal groove are all equal, parameters of coupling between the M feeding arms and the second metal groove, such as induced currents generated by coupling, can be conveniently controlled, the distances between different feeding arms and the second metal groove can be all equal by arranging the M feeding arms on the same plane, and thus, the working state of the antenna unit provided by the embodiment of the present invention can be conveniently controlled.

Optionally, in the embodiment of the present invention, the M feeding portions may be four feeding portions, two feeding portions of the four feeding portions may be located on one diagonal line of the first metal groove, and the other two feeding portions of the four feeding portions may be located on the other diagonal line of the first metal groove.

Optionally, in an embodiment of the present invention, two feeding portions electrically connected to the first feeding arm and the third feeding arm may be located on one diagonal line of the first metal groove, and two feeding portions electrically connected to the second feeding arm and the fourth feeding arm may be located on the other diagonal line of the first metal groove.

For example, as shown in fig. 5, a feeding portion 2030 electrically connected to the first feeding arm 2040 (specifically, the first end of the first feeding arm) and a feeding portion 2031 electrically connected to the third feeding arm 2041 (specifically, the first end of the third feeding arm) may be located on a first diagonal line L1 of the first metal groove, and a feeding portion 2032 electrically connected to the second feeding arm 2042 (specifically, the first end of the second feeding arm) and a feeding portion 2033 electrically connected to the fourth feeding arm 2043 (specifically, the first end of the fourth feeding arm) may be located on a second diagonal line L2 of the first metal groove. Thus, the distance between the first feeding arm and the third feeding arm and the distance between the second feeding arm and the fourth feeding arm can be further increased, and the isolation of the ports of the antenna unit can be further improved.

Next, referring to fig. 6, an exemplary isolation of the antenna unit according to the embodiment of the present invention is described.

Exemplarily, as shown in fig. 6, a schematic diagram of polarization isolation of an antenna unit when the antenna unit provided by the embodiment of the present invention operates is provided. Assuming that the first metal groove is a rectangular groove; and the feeding arm group formed by the first feeding arm and the third feeding arm is a horizontally polarized feeding arm group, the feeding arm group formed by the second feeding arm and the fourth feeding arm is a vertically polarized feeding arm group, the feeding parts electrically connected with the first feeding arm and the third feeding arm are distributed on one diagonal line of the first metal groove, and the feeding arms electrically connected with the second feeding arm and the fourth feeding arm are distributed on the other diagonal line of the first metal groove. Then, as shown in fig. 6, the isolation of the ports of the antenna unit is less than-20 dB in the full frequency band in which the antenna unit operates (i.e., all frequency bands that the antenna unit can cover). However, the port isolation of the antenna unit is-10 dB, which can meet the practical requirement, and the smaller the port isolation of the antenna unit is, the smaller the mutual influence between the ports of the antenna unit is, so as to further optimize the polarization performance of the antenna unit.

Optionally, in the embodiment of the present invention, the amplitude of the signal source electrically connected to the two feeding portions on the same diagonal line is equal, and the phase difference is 180 degrees.

Optionally, in this embodiment of the present invention, the amplitudes of the signal sources electrically connected to the two feeding portions electrically connected to the feeding arms (the first feeding arm and the third feeding arm) in the first feeding arm group are equal, and the phases are different by 180 degrees. The signal sources electrically connected to the two feeding portions electrically connected to the feeding arms (the second feeding arm and the fourth feeding arm) in the second feeding arm group have the same amplitude and the phase difference is 180 degrees.

Optionally, in this embodiment of the present invention, the antenna unit may further include a first insulator disposed in the first metal groove, and the first insulator may carry the M feeding arms.

Wherein, for each of the M feeding portions, the feeding portion passing through the first insulator may be electrically connected to one feeding arm, respectively.

Optionally, in this embodiment of the present invention, a feeding arm of the M feeding arms may be carried on the first insulator, or may be carried in the first insulator. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Exemplarily, as shown in fig. 7, a cross-sectional view of an antenna unit according to an embodiment of the present invention is provided. In fig. 7, the antenna unit 20 may further include a first insulator 205 disposed within the first metal groove 201. Wherein the M feed arms 204 may be carried on the first insulator 205, and the first end of the feed portion 203 may be electrically connected with the feed arms 204 through the first insulator 205.

In an embodiment of the present invention, the first insulator may not only carry the M feeding arms, but also isolate the M feeding arms from the first metal groove, so as to prevent interference between the M feeding arms and the first metal groove.

Optionally, in the embodiment of the present invention, a cross-sectional shape of the first insulator may be the same as an opening shape of the first metal groove. Such as rectangular or circular, etc.

In the embodiment of the present invention, the shape of the first insulator may be any shape that can meet the actual use requirement. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Optionally, in an embodiment of the present invention, a material of the first insulator may be an insulating material with a relatively small relative dielectric constant and a relatively small loss tangent.

Optionally, in an embodiment of the present invention, a material of the first insulator may be any possible material such as plastic or foam. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Illustratively, in the embodiment of the present invention, the relative dielectric constant of the material of the first insulator may be 2.53, and the loss tangent may be 0.003.

In the embodiment of the present invention, on the premise of carrying the M feeding arms, the smaller the loss tangent value of the material of the first insulator is, the smaller the influence of the first insulator on the radiation effect of the antenna unit is. That is, the smaller the loss tangent value of the material of the first insulator, the smaller the influence of the first insulator on the operation performance of the antenna unit, and the better the radiation effect of the antenna unit.

Optionally, in the embodiment of the present invention, as shown in fig. 8 in conjunction with fig. 2, in a case that the M feeding arms 204 are carried on the first insulator 205, the antenna unit 20 may further include a second insulator 206 disposed in the first metal groove 201, the second insulator 206 may be disposed in a stacked manner with the first insulator 205, and the M feeding arms 204 may be embedded in the second insulator 206.

It should be noted that, in the embodiment of the present invention, in order to illustrate the structure of the antenna unit more clearly, fig. 8 is an exploded view of the antenna unit, that is, an exploded view of the antenna unit is illustrated in a state where all components of the antenna unit are separated. In practical implementation, the first insulator and the second insulator may be stacked and disposed in the first metal groove, and the M feeding arms may be embedded in the second insulator.

Illustratively, as shown in fig. 7, the M feeding arms 204 are carried on a first insulator 205, and the M feeding arms 204 are embedded in a second insulator 206.

Alternatively, in the embodiment of the present invention, the cross-sectional shape of the second insulator may be the same as the opening shape of the first metal groove. Such as rectangular or circular, etc.

Of course, in practical implementation, the shape of the cross section of the second insulator may also be any other possible shape, which may be determined according to practical use requirements, and the embodiment of the present invention is not limited.

Optionally, in an embodiment of the present invention, a material of the second insulator may be an insulating material with a relatively small relative dielectric constant and a relatively small loss tangent.

Optionally, in an embodiment of the present invention, a material of the second insulator may be the same as a material of the first insulator.

Optionally, in an embodiment of the present invention, a material of the second insulator may be any possible material such as plastic or foam. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Illustratively, in the embodiment of the present invention, the relative dielectric constant of the material of the second insulator may be 2.5, and the loss tangent may be 0.001.

In the embodiment of the present invention, on the premise of isolating the M feeding arms from the external environment, the smaller the loss tangent value of the material of the second insulator is, the smaller the influence of the second insulator on the radiation effect of the antenna element is. That is, the smaller the loss tangent value of the material of the second insulator is, the smaller the influence of the second insulator on the operation performance of the antenna element is, and the better the radiation effect of the antenna element is.

Alternatively, in the embodiment of the present invention, as shown in fig. 7, the surface of the second insulator 206 may be flush with the surface where the first metal groove 201 is opened.

In practice, the thickness of the second insulator may be any other thickness, that is, the surface of the second insulator may protrude from the surface of the opening of the first metal groove, or may be lower than the surface of the opening of the first metal groove. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

In the embodiment of the invention, because the thicknesses of the second insulators are different, the performances of the antenna unit are possibly different, and therefore, the thickness of the second insulator can be set according to actual use requirements, so that the design of the antenna unit is more flexible.

Furthermore, when the surface of the second insulator is flush with the surface of the opening of the first metal groove, the outer surface of the antenna unit provided by the embodiment of the invention is relatively flat, so that the outer surface of the antenna unit is relatively beautiful.

Optionally, in the embodiment of the present invention, as shown in fig. 7, the bottom of the first metal groove 201 may further be provided with M through holes 207 penetrating through the bottom of the first metal groove 201, and each of the M feeding portions 203 may be respectively disposed in one through hole 207.

Optionally, in the embodiment of the present invention, the M through holes may be through holes with the same diameter.

Optionally, in the embodiment of the present invention, the M through holes may be distributed on a diagonal line of the first metal groove. The specific distribution mode of the M through holes in the first metal groove can be determined according to the distribution positions of the M feeding portions in the first metal groove.

In the embodiment of the invention, as the through holes are simple to arrange in the first metal groove and easy to realize, the process of the feed part penetrating through the metal groove can be simplified by arranging the through holes penetrating through the bottom of the first metal groove at the bottom of the first metal groove and arranging the M feed parts in the through holes.

Optionally, in an embodiment of the present invention, a third insulator may be disposed in each of the M through holes, and the third insulator may wrap the feeding portion disposed in the through hole.

In an embodiment of the present invention, the third insulator wraps the feeding portion disposed in the through hole, so that the feeding portion is fixed in the through hole.

Illustratively, as shown in fig. 7, a plurality of through holes 207 are provided at the bottom of the first metal groove 201, a third insulator 208 is provided in each through hole 207, and the feeding portion 203 may be electrically connected to the feeding arm 204 through the third insulator 208 and the first insulator 205 provided in the through holes 207.

It should be noted that, in fig. 7, the signal source 30 electrically connected to one end (e.g., the second end in the embodiment of the present invention) of the power feeding portion 203 may be a millimeter wave signal source in an electronic device.

In an embodiment of the present invention, the third insulator may be made of an insulating material having a relatively small relative permittivity.

Illustratively, the material of the third insulator may be any possible material such as a foam material or a plastic material.

Optionally, in an embodiment of the present invention, the third insulator may be made of the same insulating material as the first insulator, or may be made of a different insulating material. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

In the embodiment of the present invention, the third insulator, the feeding portion, and the through hole provided in the first metal groove together constitute a coaxial transmission structure with a characteristic impedance of 50 ohms, and on one hand, since the diameter of the through hole may be larger than that of the feeding portion, when the feeding portion is provided in the through hole, the feeding portion may not be fixed in the through hole, and therefore, by providing the third insulator in the through hole and disposing the third insulator to surround the feeding portion, the feeding portion may be fixed in the through hole. On the other hand, since the first metal groove and the feeding portion are made of metal materials, contact may occur between the first metal groove and the feeding portion in the working process of the antenna unit, the feeding portion and the first metal groove may be isolated by adding the third insulator in the through hole, so that the feeding portion is insulated from the first metal groove, and the antenna performance of the electronic device may be more stable.

In the embodiment of the present invention, the antenna units shown in the above drawings are all exemplarily described by referring to one drawing in the embodiment of the present invention. In specific implementation, the antenna units shown in the above drawings may also be implemented in combination with any other drawings that may be combined, which are illustrated in the above embodiments, and are not described herein again.

An embodiment of the present invention provides an electronic device, which may include the antenna unit provided in any one of fig. 2 to 8. For the description of the antenna unit, reference may be specifically made to the description of the antenna unit in the foregoing embodiments, and details are not described here.

The electronic device in the embodiment of the invention can be a mobile electronic device or a non-mobile electronic device. For example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted terminal, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a Personal Computer (PC), a Television (TV), a server or a teller machine, and the like, and the embodiment of the present invention is not particularly limited.

Optionally, in this embodiment of the present invention, at least one first groove may be disposed in a housing of the electronic device, and each first groove in the at least one first groove may be disposed with at least one antenna unit provided in this embodiment of the present invention.

In the embodiment of the present invention, at least one antenna unit provided in the embodiment of the present invention is integrated in the electronic device by disposing the at least one first groove in the housing of the electronic device and disposing at least one antenna unit provided in the embodiment of the present invention in each first groove, so that an antenna array formed by the antenna units provided in the embodiment of the present invention can be formed in the electronic device.

Optionally, in the embodiment of the present invention, the first groove may be disposed in a frame of a housing of the electronic device.

In an embodiment of the present invention, as shown in fig. 9, the electronic device 4 may include a housing 40. The case 40 may include a first metal frame 41, a second metal frame 42 connected to the first metal frame 41, a third metal frame 43 connected to the second metal frame 42, and a fourth metal frame 44 connected to both the third metal frame 43 and the first metal frame 41. The electronic device 4 may further include a floor 45 connected to the second metal frame 42 and the fourth metal frame 44, and a first antenna 46 (specifically, these metal frames may also be a part of the first antenna) disposed in an area surrounded by the third metal frame 43, a part of the second metal frame 42, and a part of the fourth metal frame 44. Wherein, the second metal frame 42 is provided with a first groove 47. Therefore, the antenna unit provided by the embodiment of the invention can be arranged in the first groove, so that the electronic equipment can comprise the array antenna module formed by the antenna unit provided by the embodiment of the invention, and the design of integrating the antenna unit provided by the embodiment of the invention in the electronic equipment can be further realized.

In the embodiment of the present invention, the floor may be a PCB or a metal middle frame in an electronic device, or may be any portion that can be used as a virtual ground, such as a display screen of an electronic device.

In the embodiment of the present invention, the first antenna may be a communication antenna of a second generation mobile communication system (i.e., a 2G system), a third generation mobile communication system (i.e., a 3G system), a fourth generation mobile communication system (i.e., a 4G system), and the like of the electronic device. The antenna unit integrated in the electronic device in the embodiment of the present invention (the antenna unit formed by the first metal groove, the second metal groove, the M feeding portions, the M feeding arms, and the like) may be an antenna of a 5G system of the electronic device.

Optionally, in the embodiment of the present invention, the first metal frame, the second metal frame, the third metal frame, and the fourth metal frame may be sequentially connected end to form a closed frame; or, part of the first metal frame, the second metal frame, the third metal frame and the fourth metal frame may be connected to form a semi-enclosed frame; or, the first metal frame, the second metal frame, the third metal frame and the fourth metal frame may not be connected to each other to form an open frame. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

It should be noted that the frame included in the casing 40 shown in fig. 9 is an exemplary closed frame formed by sequentially connecting the first metal frame 41, the second metal frame 42, the third metal frame 43, and the fourth metal frame 44 end to end, and does not limit the embodiment of the present invention. For the frames formed by other connection manners (part of the frames are connected or all the frames are not connected to each other) among the first metal frame, the second metal frame, the third metal frame and the fourth metal frame, the implementation manner of the frames is similar to that provided by the embodiment of the present invention, and in order to avoid repetition, the description is omitted here.

Optionally, in the embodiment of the present invention, the at least one first groove may be disposed in the same frame of the housing, or may be disposed in different frames. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Optionally, in the embodiment of the present invention, a plurality of first grooves may be disposed on a housing of an electronic device, so that a plurality of antenna units provided in the embodiment of the present invention may be disposed in the electronic device, and thus the electronic device may include a plurality of antenna units, so as to improve antenna performance of the electronic device.

In the embodiment of the invention, when a plurality of antenna units are arranged in the electronic device, according to the structure of the antenna units, the distance between two adjacent first grooves can be reduced, namely the distance between two adjacent antenna units is reduced, so that under the condition that the electronic device comprises a small number of antenna units, the scanning angles of beams of electromagnetic waves generated by the M feed arms and the second metal grooves in the antenna units can be increased, and the coverage range of millimeter wave antenna communication of the electronic device can be increased.

Optionally, in this embodiment of the present invention, the first metal groove and the second metal groove in the antenna unit may be part of a housing of the electronic device. It is understood that the first metal groove and the second metal groove may be grooves provided on a housing of the electronic device.

Optionally, in this embodiment of the present invention, the housing of the electronic device may be a radiator of a non-millimeter wave antenna in the electronic device.

In the embodiment of the invention, the shell of the electronic equipment can also be used as a radiator of a non-millimeter wave antenna in the electronic equipment, so that the antennas (the millimeter wave antenna and the non-millimeter wave antenna) in the electronic equipment can be integrated into a whole, and the space occupied by the antennas in the electronic equipment can be greatly reduced.

Optionally, in an embodiment of the present invention, the first metal groove and the second metal groove may be disposed on a metal frame of a housing of the electronic device.

Illustratively, as shown in fig. 10, at least one first metal groove 201 and a second metal groove (not shown in fig. 10) disposed at the bottom of the first metal groove 201 may be disposed in the housing 40 of the electronic device 4 provided in the embodiment of the present invention, and M feeding arms and M feeding portions in the antenna unit may be disposed in the first metal groove 201 (in practice, the first metal groove and the second metal groove are not visible in the perspective of the electronic device illustrated in fig. 10).

In the following embodiments, for convenience of description, the first metal groove and the second metal groove are collectively referred to as a target metal groove.

Optionally, in the embodiment of the present invention, one target metal groove may be disposed in any one of the first metal frame, the second metal frame, the third metal frame, and the fourth metal frame of the housing. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

It is to be understood that, in the case that the target metal groove is disposed on a frame (e.g., the first metal frame, etc.) of the housing, a side wall, a bottom, etc. of the target metal groove included in the target metal groove in the embodiment of the present invention may be a part of the electronic device, and in particular, may be a part of the frame of the housing provided in the embodiment of the present invention.

In the embodiment of the present invention, in the above fig. 10, the first metal groove 201 and the second metal groove (i.e., the target metal groove) are disposed on the first metal frame 41 of the housing 40, and the opening direction of the target metal groove is the positive direction of the Z axis of the coordinate system shown in fig. 10.

It can be understood that, in the embodiment of the present invention, as shown in fig. 10, when the target metal groove is disposed in the second metal frame of the housing, the opening direction of the target metal groove may be the X-axis forward direction; when the target metal groove is arranged on the third metal frame of the shell, the opening direction of the target metal groove can be the Z-axis direction; when the target metal groove is disposed on the fourth metal bezel of the case, the opening direction of the target metal groove may be an X-axis direction.

Optionally, in the embodiment of the present invention, a plurality of target metal grooves may be disposed in a housing of an electronic device, and M feeding arms, M feeding portions, and other components in the embodiment of the present invention are disposed in each target metal groove, so that a plurality of antenna units provided in the embodiment of the present invention may be integrated in the electronic device, and thus, the antenna units may form an antenna array, so that antenna performance of the electronic device may be improved.

In the embodiment of the present invention, as shown in fig. 11, when the antenna unit provided in the embodiment of the present invention radiates a signal with a frequency of 28GHz, a radiation pattern of the antenna unit is provided; as shown in fig. 12, when the antenna unit provided in the embodiment of the present invention radiates a signal with a frequency of 39GHz, the antenna unit radiates a directional pattern. As can be seen from fig. 11 and 12, the maximum radiation direction of the antenna unit at 28GHz is the same as the maximum radiation direction of the antenna unit at 39GHz, and therefore the antenna unit provided by the embodiment of the present invention is suitable for forming a broadband antenna array. Therefore, the electronic device may be provided with at least two target metal grooves, and each target metal groove is provided with the M arms, the M feeding portions and other components, so that the electronic device includes a plurality of antenna units provided by the embodiments of the present invention, and thus the electronic device may include an antenna array formed by the antenna units, and further, the antenna performance of the electronic device may be improved.

Optionally, in the embodiment of the present invention, when a plurality of antenna units provided in the embodiment of the present invention are integrated in an electronic device, a distance between two adjacent antenna units (that is, a distance between two adjacent target metal grooves) may be determined according to an isolation of the antenna units and a scanning angle of an antenna array formed by the antenna units. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Optionally, in the embodiment of the present invention, the number of the target metal grooves provided in the housing of the electronic device may be determined according to the size of the target metal groove and the size of the housing of the electronic device, which is not limited in the embodiment of the present invention.

Exemplarily, as shown in fig. 13, a bottom view of a plurality of antenna units provided on a housing according to an embodiment of the present invention in a Z-axis forward direction (a coordinate system shown in fig. 10) is provided. Assuming that the first metal groove is a rectangular groove, as shown in fig. 13, a plurality of antenna units provided by the embodiment of the present invention are disposed on the third metal frame 43 (each antenna unit is formed by the first metal groove on the housing, the second metal groove disposed at the bottom of the first metal groove, and M feeding arms located in the first metal groove). Wherein M feed arms 204 are disposed within the first metal groove 201, and the feed arms in fig. 13 are "T" shaped feed arms, and the second metal groove is not shown in fig. 13.

In the embodiment of the present invention, the above-mentioned fig. 13 is an example of 4 antenna units disposed on the third metal frame, and does not limit the embodiment of the present invention at all. It can be understood that, in a specific implementation, the number of the antenna units disposed on the third metal frame may be determined according to an actual use requirement, and the embodiment of the present invention is not limited at all.

An embodiment of the present invention provides an electronic device, which may include an antenna unit. The antenna unit can comprise a first metal groove, a second metal groove arranged at the bottom of the first metal groove, M feeding parts arranged at the bottom of the first metal groove, and M feeding arms arranged in the first metal groove; each of the M feeding portions is electrically connected with the first end of one feeding arm and insulated from the first metal groove and the second metal groove, the M feeding arms are arranged in the first metal groove in a surrounding mode according to a first sequence, each of the M feeding arms is coupled with the second metal groove, and M is an integer larger than 1. By the scheme, the feed arm can be coupled with the second metal groove (which can be used as a radiator of the antenna unit), so that the feed arm can be coupled with the second metal groove under the condition that the feed arm receives an alternating current signal, so that the second metal groove can generate an induced current, and the feed arm and the second metal groove can radiate electromagnetic waves with certain frequency; and because there may be a plurality of current paths of the induced current generated by coupling the feeding arm with the second metal groove (for example, there may be a plurality of current paths such as a current path from the feeding arm to the second metal groove and then to the feeding arm, and a current path formed on the second metal groove), there may also be a plurality of frequencies of the electromagnetic wave generated by the current on the feeding arm via the second metal groove, so that the antenna unit may obtain a wider bandwidth, and thus the frequency band covered by the antenna unit may be increased. And because the M feed arms are arranged in the first metal groove in a surrounding manner according to the first sequence, the distance between each feed arm in the M feed arms is larger, so that the interference between the M feed arms can be reduced, the isolation of the port of the antenna unit can be improved, and the performance of the antenna unit can be further improved.

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.

Claims

1. An antenna unit is characterized in that the antenna unit comprises a first metal groove, a second metal groove arranged at the bottom of the first metal groove, M feeding portions arranged at the bottom of the first metal groove, and M feeding arms arranged in the first metal groove;

each of the M feeding portions is electrically connected to a first end of one feeding arm and insulated from the first metal groove and the second metal groove, the M feeding arms are circumferentially arranged in the first metal groove according to a first sequence, each of the M feeding arms is coupled to the second metal groove, and M is an integer greater than 1.

2. The antenna element according to claim 1, wherein a projection of each of the M feed arms on a first plane intersects an opening edge of the second metal groove, the first plane being a plane in which the opening of the second metal groove is located.

3. The antenna element of claim 1, wherein said M feed arms are disposed in said first metal groove in said first order along an inner sidewall of said first metal groove in order from a first end of the feed arm to a second end of the feed arm.

4. The antenna element of claim 1, wherein the first metal groove is a rectangular groove, the M feed arms include a first feed arm, a second feed arm, a third feed arm, and a fourth feed arm, and the first feed arm, the second feed arm, the third feed arm, and the fourth feed arm are sequentially disposed within the first metal groove along an inner sidewall of the first metal groove;

the first feeding arm and the third feeding arm are parallel to a first inner side wall of the first metal groove, the second feeding arm and the fourth feeding arm are parallel to a second inner side wall of the first metal groove, and the first inner side wall is perpendicular to the second inner side wall.

5. The antenna element of claim 4, wherein said M feed arms are located on a same plane.

6. The antenna unit of claim 4, wherein the M feed portions are four feed portions, two of the four feed portions are located on one diagonal of the first metal groove, and the other two of the four feed portions are located on the other diagonal of the first metal groove.

7. An antenna unit according to claim 6, characterized in that the signal sources electrically connected to the two feeding portions on the same diagonal are equal in amplitude and 180 degrees out of phase.

8. The antenna element according to any of claims 1-7, wherein any diagonal of the opening of said first metal groove is not parallel to any diagonal of the opening of said second metal groove.

9. The antenna element according to any of claims 1-7, wherein the opening of said first metal groove is larger than the opening of said second metal groove.

10. The antenna element according to any one of claims 1 to 7, further comprising a first insulator disposed within said first metal groove, said first insulator carrying said M feed arms;

wherein, for each of the feeding portions, the feeding portion passing through the first insulator is electrically connected to one feeding arm, respectively.

11. The antenna element of claim 10, wherein said M feed arms are carried on said first insulator;

the antenna unit further comprises a second insulator disposed in the first metal groove, the second insulator is stacked with the first insulator, and the M feed arms are embedded in the second insulator.

12. The antenna element of claim 11, wherein a surface of said second dielectric body is flush with a surface on which said first metal recess opens.

13. An electronic device, characterized in that the electronic device comprises at least one antenna unit according to any of claims 1-12.

14. The electronic device of claim 13, wherein at least one first recess is disposed in a housing of the electronic device, each of the at least one first recess disposed with at least one of the antenna elements.

15. The electronic device of claim 13, wherein the first and second metal grooves in the antenna unit are part of a housing of the electronic device.