WO2021083218A1 - Antenna unit and electronic device - Google Patents

Abstract

Embodiments of the present invention provide an antenna unit and an electronic device. The antenna unit comprises: a metal groove, M feed portions provided at the bottom of the metal groove, and a feed arm structure provided in the metal groove. The feed arm structure comprises M feed arm units, each feed arm unit comprising a first feed arm, a second feed arm electrically connected to a first end of the first feed arm, and a third feed arm electrically connected to the second feed arm; a second end of the first feed arm in each feed arm unit is electrically connected to different feed portions of the M feed portions; the third feed arms of the M feed arm units are electrically connected to each other, and connection points of electrical connection are current zero points of the M feed arm units, and M is an integer greater than 1.

Description

Antenna unit and electronic equipment

Cross-references to related applications

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office of China, the application number is 201911049912.7, and the application name is "an antenna unit and electronic equipment" on October 31, 2019. The entire content is incorporated into this by reference. Applying.

Technical field

The embodiments of the present invention relate to the field of communication technology, and in particular to an antenna unit and electronic equipment.

Background technique

With the development of the fifth-generation mobile communication (5th-Generation, 5G) system and the widespread application of electronic devices, millimeter-wave antennas are gradually being used in various electronic devices to meet the increasing use demands of users.

Currently, millimeter wave antennas in electronic devices are mainly implemented through antenna in package (AiP) technology. For example, as shown in Figure 1, AiP technology can be used to integrate the array antenna 11, the radio frequency integrated circuit (RFIC) 12, and the power management integrated circuit (PMIC) 13 with a working wavelength of millimeter wave. And the connector 14 are packaged into a module 10, and the module 10 may be called a millimeter wave antenna module. Wherein, the antenna in the above-mentioned array antenna may be a patch antenna, a Yagi-Uda antenna, or a dipole antenna.

However, because the antennas in the above-mentioned array antennas are usually narrowband antennas (such as the patch antennas listed above), the coverage frequency band of each antenna is limited, but the millimeter wave frequency bands planned in the 5G system are usually more, for example, 28GHz The main n257 (26.5GHz-29.5GHz) frequency band and the 39GHz main n260 (37.0GHz-40.0GHz) frequency band, etc., so the traditional millimeter wave antenna module may not be able to cover the mainstream millimeter wave frequency band planned in the 5G system , Resulting in poor antenna performance of electronic equipment.

Summary of the invention

The embodiments of the present invention provide an antenna unit and an electronic device to solve the problem that the millimeter wave antenna of the existing electronic device covers less frequency bands, resulting in poor antenna performance of the electronic device.

In order to solve the above technical problems, the present invention is implemented as follows:

In a first aspect, an embodiment of the present invention provides an antenna unit. The antenna unit includes: a metal groove, M feed portions arranged at the bottom of the metal groove, and a feed arm structure arranged in the metal groove; Wherein, the feeding arm structure includes M feeding arm units, and each feeding arm unit includes a first feeding arm, a second feeding arm electrically connected to a first end of the first feeding arm, and a second feeding arm. The third feeder arm electrically connected to the feeder arm; the second end of the first feeder arm in each feeder arm unit is electrically connected to different feeders of the M feeders, the M feeder arms The third feeding arms in each feeding arm unit in the unit are electrically connected to each other, and the connection point electrically connected to each other is the current zero point of the M feeding arm units, and M is an integer greater than 1.

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

In the embodiment of the present invention, the antenna unit may include: a metal groove, M feed parts arranged at the bottom of the metal groove, and M feed arm structures arranged in the metal groove; wherein, the feed arm structure It includes M feeder arm units, each feeder arm unit includes a first feeder arm, a second feeder arm electrically connected to the first end of the first feeder arm, and a second feeder arm electrically connected to the second feeder arm The third feeder arm; the second end of the first feeder arm in each feeder arm unit is electrically connected to different feeders in the M feeders, and each of the M feeder arm units feeds The third feeding arms in the arm units are electrically connected to each other, and the connection point electrically connected to each other is the current zero point of the M feeding arm units, and M is an integer greater than 1. With this solution, since the connection point at which the third feeder arm of each feeder arm unit of the M feeder arm units is electrically connected to each other is the current zero point of the M feeder arm units, the feeder arm units can work independently , That is, it will not be interfered by other feeding arm units; and since the feeding arm unit includes the first feeding arm, the second feeding arm and the third feeding arm, when the feeding part transmits the AC signal to the feeding arm When the arm unit is installed, there can be multiple paths of current passing through the feeding arm unit, such as the current path formed on the first feeding arm, the current path from the first feeding arm to the second feeding arm, and the first feeding arm. The current path from the arm to the second feeding arm and then to the third feeding arm, etc., so that the frequency of the electromagnetic wave radiated by the feeding arm unit can also be multiple, so that the antenna unit can obtain a wider bandwidth, which can Increase the frequency band covered by the antenna unit.

Description of the drawings

FIG. 1 is a schematic structural diagram of a traditional millimeter wave package antenna provided by an embodiment of the present invention;

FIG. 2 is one of the exploded views of the antenna unit provided by the embodiment of the present invention;

Fig. 3 is a reflection coefficient diagram of an antenna unit provided by an embodiment of the present invention;

4 is a cross-sectional view of an antenna unit provided by an embodiment of the present invention;

FIG. 5 is a top view of an antenna unit provided by an embodiment of the present invention;

FIG. 6 is a schematic diagram of isolation of an antenna unit provided by an embodiment of the present invention;

FIG. 7 is the second exploded view of the antenna unit provided by the embodiment of the present invention;

FIG. 8 is one of the schematic diagrams of the hardware structure of an electronic device provided by an embodiment of the present invention;

9 is a second schematic diagram of the hardware structure of an electronic device provided by an embodiment of the present invention;

FIG. 10 is one of the radiation pattern diagrams of the antenna unit provided by the embodiment of the present invention;

FIG. 11 is the second radiation pattern diagram of the antenna unit provided by the embodiment of the present invention;

Fig. 12 is a bottom view of an electronic device provided by an embodiment of the present invention.

Description of reference signs: 10-millimeter wave antenna module; 11—array antenna with working wavelength of millimeter wave; 12—RFIC; 13—PMIC; 14—connector; 20—antenna unit; 201—metal groove; 202— Feeder; 203—feed arm structure; 2031—feed arm unit; 2031a—first feed arm; 2031b—second feed arm; 2031c—third feed arm; 204—first insulator; 205— Through hole; 206—second insulator; L1—first axis of symmetry; L2—second axis of symmetry; 30—5G millimeter wave signal; 4-electronic equipment; 40—shell; 41—first metal frame; 42—section Two metal frame; 43—the third metal frame; 44—the fourth metal frame; 45—the floor; 46—the first antenna; 47—the first groove.

It should be noted that, in the embodiment of the present invention, the coordinate axes in the coordinate system shown in the drawings are orthogonal to each other.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

The term "and/or" in this article refers to an association relationship that describes associated objects, which means that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone These three situations. In this document, the symbol "/" represents the relationship that the associated object is or, for example, A/B represents A or B.

The terms "first" and "second" in the specification and claims of the present invention are used to distinguish different objects, rather than to describe a specific order of objects. For example, the first feeding arm and the second feeding arm are used to distinguish different feeding arms, rather than describing the specific order of the feeding arms.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used as examples, illustrations, or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiment of the present invention should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as "exemplary" or "for example" are used to present related concepts in a specific manner.

In the description of the embodiments of the present invention, unless otherwise specified, the meaning of “multiple” refers to two or more than two, for example, multiple antenna elements refers to two or more antenna elements, etc.

Some terms/nouns involved in the embodiments of the present invention will be explained below.

AC signal: A signal that changes the direction of current.

Multiple-input multiple-output (MIMO) technology: refers to a technology that uses multiple antennas to send or receive signals at the transmitting end (that is, the transmitting end and the receiving end) to improve communication quality. In this technology, signals can be sent or received through multiple antennas at the transmitting end.

Relative permittivity: A physical parameter used to characterize the dielectric properties or polarization properties of dielectric materials.

Floor: refers to the part of electronic equipment that can be used as a virtual ground. For example, printed circuit board (PCB) in electronic equipment, metal middle frame or display screen of electronic equipment, etc.

Embodiments of the present invention provide an antenna unit and an electronic device. The antenna unit may include: a metal groove, M feed portions arranged at the bottom of the metal groove, and M feed arm structures arranged in the metal groove Wherein, the feeding arm structure includes M feeding arm units, each feeding arm unit includes a first feeding arm, a second feeding arm electrically connected to the first end of the first feeding arm, and the first feeding arm The third feeder arm electrically connected to the two feeder arms; the second end of the first feeder arm in each feeder arm unit is electrically connected to different ones of the M feeders, and the M feeders The third feeding arm in each feeding arm unit in the arm unit is electrically connected to each other, and the connection point electrically connected to each other is the current zero point of the M feeding arm units, and M is an integer greater than 1. With this solution, since the connection point at which the third feeder arm of each feeder arm unit of the M feeder arm units is electrically connected to each other is the current zero point of the M feeder arm units, the feeder arm units can work independently , That is, it will not be interfered by other feeding arm units; and since the feeding arm unit includes the first feeding arm, the second feeding arm and the third feeding arm, when the feeding part transmits the AC signal to the feeding arm When the arm unit is installed, there can be multiple paths of current passing through the feeding arm unit, such as the current path formed on the first feeding arm, the current path from the first feeding arm to the second feeding arm, and the first feeding arm. The current path from the arm to the second feeding arm and then to the third feeding arm, etc., so that the frequency of the electromagnetic wave radiated by the feeding arm unit can also be multiple, so that the antenna unit can obtain a wider bandwidth, which can Increase the frequency band covered by the antenna unit.

The antenna unit provided in the embodiment of the present invention can be applied to electronic equipment, and can also be applied to other equipment that needs to use the antenna unit, and can be specifically determined according to actual use requirements, which is not limited in the embodiment of the present invention. The antenna unit provided in the embodiment of the present invention will be exemplarily described below by taking the antenna unit applied to an electronic device as an example.

The antenna unit provided by the embodiment of the present invention will be exemplarily described below with reference to the various drawings.

As shown in FIG. 2, the antenna unit 20 may include a metal groove 201, M feed portions 202 arranged at the bottom of the metal groove 201, and a feeding arm structure 203 arranged in the metal groove 201.

Wherein, the feeding arm structure 203 may include M feeding arm units 2031, and each feeding arm unit (hereinafter referred to as each feeding arm unit) 2031 of the M feeding arm units may include a first feeding arm unit. The arm 2031a, the second feeding arm 2031b electrically connected to the first end of the first feeding arm 2031a, and the third feeding arm 2031c electrically connected to the second feeding arm 2031b; The second end of the first feeding arm 2031a may be electrically connected to different feeding parts of the aforementioned M feeding parts, and the third feeding arm 2031c in each feeding arm unit of the M feeding arm units may be The connection points that are electrically connected to each other and are electrically connected to each other are the current zero points of the M feed arm units, and M is an integer greater than one.

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, the component parts of the antenna unit are all in a separated state. In actual implementation, the above-mentioned M power feeders and feeder arm structures can all be arranged in the metal groove, that is, the metal groove, M power feeders and the feeder arm structure form a whole to form an embodiment of the present invention. Provided antenna unit.

In addition, in FIG. 2, the second end of the first feeding arm 2031a and the feeding portion 202 are not shown in an electrically connected state. In actual implementation, the second end of the first feeding arm 2031a may be connected to the feeding portion 202. Electric connection.

Optionally, in the embodiment of the present invention, the structure of the feed arm structure may be completely symmetrical, that is, the structure (for example, parameters such as width or length) of each of the above-mentioned M feed arm units is the same; The structure of the electric arm structure may also not be completely symmetrical (for example, partly symmetric), that is, some of the above-mentioned M power-feeding arm units have the same structure; the structure of the power-feeding arm structure may also be asymmetric, that is, the above-mentioned M The structure of each feed arm unit in the feed arm unit is different. Specifically, it can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.

Exemplarily, as shown in FIG. 2, the structure of the feed arm structure may be completely symmetrical.

Optionally, in the embodiment of the present invention, the first end of the first feeding arm in each of the aforementioned feeding arm units may be electrically connected to the first end of the second feeding arm, and the second end of the second feeding arm may be electrically connected to the first end of the second feeding arm. The terminal may be electrically connected to the first end of the third feeder arm, and the second end of the third feeder arm in each feeder arm unit may be electrically connected to each other.

Optionally, in the embodiment of the present invention, the first feeding arm, the second feeding arm, and the third feeding arm in the aforementioned feeding arm unit may be integrally formed or assembled. Specifically, it can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.

Optionally, in the embodiment of the present invention, the M feed arm units in the aforementioned feed arm structure may be integrally formed (that is, the feed arm structure is integrally formed), or may be assembled, which may be specifically based on actual conditions. The usage requirements are determined, which is not limited in the embodiment of the present invention.

It should be noted that, in the embodiment of the present invention, when the feeding arm structure is integrally formed, each feeding arm unit is also integrally formed, and the center position of the feeding arm structure may be M feeding arm units The connection point electrically connected to each other is the current zero point of the M feed arm units.

In addition, the examples in the embodiments of the present invention are all exemplified by taking the structure of the feeding arm as an integral molding. Regarding the implementation manner of the power feeding arm structure as an assembly, it is similar to the implementation manner of the power feeding arm structure being integrally formed. To avoid repetition, the embodiment of the present invention will not be repeated.

Optionally, in the embodiment of the present invention, the first feeding arm and the third feeding arm in the feeding arm unit may be metal sheets, and the second feeding arm may be a metal column; or The first feeding arm, the second feeding arm and the third feeding arm may all be metal sheets. Specifically, it can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.

In order to more clearly describe the antenna unit provided by the embodiment of the present invention and its working principle, the following specifically takes an antenna unit as an example to exemplarily describe the working principle of the antenna unit provided in the embodiment of the present invention for transmitting and receiving signals.

When an electronic device sends a 5G millimeter wave signal, the signal source in the electronic device sends out an AC signal, which can be transmitted to the feeding arm unit in the feeding arm structure through the feeding part. Then, after the AC signal is received by the feeding arm unit, the AC signal may be radiated outward via the first feeding arm, the second feeding arm, and the third feeding arm in the feeding arm unit. Since there can be multiple current paths for the AC signal through the feeder arm unit, for example, the current path formed on the first feeder arm, the current path from the first feeder arm to the second feeder arm, and the current path from the first feeder arm to the second feeder arm. The current path from the second feeding arm to the third feeding arm, so the feeding arm unit can radiate electromagnetic waves of different frequencies outward. Therefore, the electronic device can transmit signals of different frequencies through the antenna unit provided in the embodiment of the present invention.

As another example, in the embodiment of the present invention, when the electronic device receives a 5G millimeter wave signal, electromagnetic waves in the space in which the electronic device is located can excite the feeding arm in the feeding arm unit (for example, the first arm in the feeding arm unit). Three feeding arms), so that the feeding arm unit can generate induced current (ie, induced AC signal). After the inductive AC signal is generated by the feeding arm unit, the feeding arm unit can input the AC signal to the receiver in the electronic device through the feeding part, so that the electronic device can receive the 5G millimeter wave signal sent by other devices. That is, the electronic device can receive signals through the antenna unit provided in the embodiment of the present invention.

In the following, referring to FIG. 3, the performance of the antenna unit provided by the embodiment of the present invention will be exemplarily described.

Exemplarily, as shown in FIG. 3, it is a reflection coefficient diagram of the antenna unit when the antenna unit provided by the embodiment of the present invention works. When the return loss is less than -6dB (decibel), the frequency range covered by the antenna unit can be 25.2GHz-41.3GHz. This frequency range can include multiple millimeter wave bands (such as n257, n260, and n261). When the return loss is less than- At 10dB, the frequency range covered by the antenna unit can be 26.3GHz-30.1GHz and 36.8GHz-40.1GHz, and this frequency range can also include multiple millimeter wave frequency bands (for example, n257, n260, and n261). The unit can cover most 5G millimeter wave frequency bands, which can improve the antenna performance of electronic devices.

It should be noted that, in the embodiment of the present invention, when the return loss of an antenna unit is less than -6dB, the antenna unit can meet actual use requirements; when the return loss of an antenna unit is less than -10dB, the antenna unit’s return loss Work performance is better. That is, the antenna unit provided by the embodiment of the present invention can ensure better working performance on the basis of meeting actual use requirements.

The embodiment of the present invention provides an antenna unit. Since the connection point at which the third feeder arm of each of the M feeder arm units is electrically connected to each other is the current zero point of the M feeder arm units, the feeder The power arm unit can work independently, that is, it will not be interfered by other power feed arm units; and since the power feed arm unit includes the first power feed arm, the second power feed arm and the third power feed arm, when the power feeder When the AC signal is transmitted to the feed arm unit, there can be multiple paths of current through the feed arm unit, such as the current path formed on the first feed arm, the current from the first feed arm to the second feed arm The path, the current path from the first feeding arm to the second feeding arm, and then to the third feeding arm, etc. In this way, the frequency of the electromagnetic wave radiated by the feeding arm unit can also be multiple, so that the antenna unit can obtain more Wide bandwidth, which can increase the frequency band covered by the antenna unit.

Optionally, in the embodiment of the present invention, the above-mentioned metal groove may be a rectangular groove or a circular groove.

Of course, in actual implementation, the above-mentioned metal grooves may also be metal grooves of any possible shape, which may be specifically determined according to actual use requirements, and the embodiment of the present invention does not limit it.

It should be noted that, in the embodiment of the present invention, the shape of the metal groove may be used to indicate the shape of the opening of the metal groove. That is, when the metal groove is a rectangular groove, the shape of the opening of the metal groove may be a rectangle; when the metal groove is a circular groove, the shape of the opening of the metal groove may be a circle.

In the embodiment of the present invention, since metal grooves of different shapes may have different performances on the antenna unit, a groove of a suitable shape can be selected as the metal groove in the antenna unit provided by the embodiment of the present invention according to the actual use requirements of the antenna unit. Slot so that the antenna unit can work in the 5G millimeter wave frequency band.

Furthermore, since the shape of the antenna unit composed of regular-shaped metal grooves is relatively stable, the implementation of the present invention can be achieved by setting the metal grooves as regular-shaped grooves (for example, rectangular grooves or circular grooves, etc.). The performance of the antenna unit provided in the example is relatively stable, so that the performance of the antenna unit can be improved.

Optionally, in the embodiment of the present invention, the aforementioned M power feeding portions may penetrate the bottom of the metal groove and be insulated from the metal groove.

Specifically, in actual implementation, as shown in Figure 2, the first end of the power feeder can be electrically connected to the second end of the first power feeder arm 2031a in the power feeder arm unit, and the second end (not shown) of the power feeder (Shown in FIG. 2) can be electrically connected to a signal source in an electronic device (for example, a 5G signal source in an electronic device). In this way, the current of the signal source in the electronic device can be transmitted to the first, second, and third feeding arms in the feeding arm unit through the feeding part, so that the signal in the electronic device can be The current of the source is transmitted to the antenna unit, so that the antenna unit can work normally.

Optionally, in the embodiment of the present invention, the first feeding arm and the third feeding arm in each feeding arm unit described above may be parallel to the surface where the opening of the metal groove is located, and each feeding arm unit The second feeding arm may be perpendicular to the first feeding arm and the third feeding arm.

Exemplarily, as shown in FIG. 4, it is a cross-sectional view of an antenna unit provided by an embodiment of the present invention. It can be seen from FIG. 4 that the first feeding arm 2031a and the third feeding arm 2031c in the feeding arm unit may be parallel to the surface where the opening of the metal groove 201 is located, and the second feeding arm 2031b in the feeding arm unit may be parallel to the surface where the opening of the metal groove 201 is located. The surface where the opening of the metal groove 201 is located is perpendicular, that is, the second feeding arm 2031b in the feeding arm unit is perpendicular to the first feeding arm 2031a and the third feeding arm 2031c.

It should be noted that the point a in FIG. 4 is used to indicate the connection point at which each of the M feed arm units is electrically connected to each other. Specifically, the position may be the center position of the feed arm structure.

Of course, in actual implementation, the positional relationship between the first feeder arm, the second feeder arm, and the third feeder arm in the feeder arm unit can also be any other possible positional relationship, which can be specifically used according to actual use. The requirement is determined, and the embodiment of the present invention does not limit it.

In the embodiment of the present invention, due to the different structure of the feeding arm unit, that is, the positional relationship of the first feeding arm, the second feeding arm and the third feeding arm in the feeding arm unit is different, the working performance of the antenna unit may be different. Therefore, the positional relationship of the first feed arm, the second feed arm and the third feed arm in the feed arm unit can be set according to the actual use requirements of the antenna unit, so that the antenna unit provided by the embodiment of the present invention can be Work in the 5G millimeter wave frequency band.

Moreover, since the first feeding arm and the third feeding arm in the feeding arm unit are perpendicular to the second feeding arm, the current path on the feeding arm unit can be increased, so the antenna unit provided by the embodiment of the present invention can be enlarged. Covered frequency band.

Optionally, in the embodiment of the present invention, the above-mentioned feeding arm structure may be arranged in the center position of the metal groove (specifically, it may be the inner cavity of the metal groove).

Optionally, in the embodiment of the present invention, between the first end of the first feeding arm in each feeding arm unit and the center of the metal groove (specifically, the center of the cross section of the inner cavity of the metal groove) The distance can be greater than the distance between the second end of the first feeding arm and the center of the metal groove.

It can be understood that the distribution direction of the first feeding arm in the metal groove in each of the aforementioned feeding arm units may be a direction from the center of the metal groove to the side wall of the metal groove.

It should be noted that, in the embodiment of the present invention, the distance between the first end of the first feeding arm and the center of the metal groove is greater than the distance between the second end of the first feeding arm and the center of the metal groove as The examples are exemplified, and they do not impose any limitation on this application. In actual implementation, the above-mentioned first feeding arm may also be arranged in the metal groove in any possible distribution manner, which may be specifically determined according to actual use requirements, which is not limited in the embodiment of the present invention.

Optionally, in the embodiment of the present invention, the above M feed arm units may be four feed arm units (ie M=4), and the four feed arm units may form two feed arm unit groups, each Each feeding arm unit group may include two feeding arm units symmetrically arranged, and the symmetry axis of one feeding arm unit group is orthogonal to the symmetry axis of the other feeding arm unit group.

In the embodiment of the present invention, since the antenna unit may include two feeder arm unit groups, and each feeder arm unit group includes two feeder arm units, the electronic device can be fed through the two feeder arm units in the antenna unit. The arm unit groups send signals or receive signals respectively, that is, the MIMO technology can be realized by the antenna unit provided in the embodiment of the present invention, so that the communication capacity and communication rate of the antenna unit can be increased, that is, the data transmission rate of the antenna unit can be increased.

It should be noted that, for ease of description and understanding, in the following embodiments, the above two feed arm units are grouped into a first feed arm unit group and a second feed arm unit group. Wherein, the first feeding arm unit group and the second feeding arm unit group respectively include two feeding arm units arranged symmetrically, and the symmetry axis of the first feeding arm unit group is the same as that of the second feeding arm unit group. The axis of symmetry is orthogonal.

Optionally, in the embodiment of the present invention, the aforementioned first feed arm unit group and the aforementioned second feed arm unit group may be two different polarized feed arm unit groups. Specifically, the first feed arm unit group may be a first polarized feed arm unit group, and the second feed arm unit group may be a second polarized feed arm unit group.

Exemplarily, as shown in FIG. 5, it is a top view of an antenna unit in the opposite direction of the Z axis according to an embodiment of the present invention. The aforementioned first feeding arm unit group may include a first feeding arm unit 20310 and a second feeding arm unit 20311, and the aforementioned second feeding arm unit group may include a third feeding arm unit 20312 and a fourth feeding arm unit. 20313. Wherein, the first feed arm unit group formed by the first feed arm unit 20310 and the second feed arm unit 20311 may be a first polarized feed arm unit group (for example, a horizontally polarized feed arm unit group) The second feed arm unit group formed by the third feed arm unit 20312 and the fourth feed arm unit 20313 may be a second polarized feed arm unit group (for example, a vertically polarized feed arm unit group).

It should be noted that, since FIG. 5 is a top view of the antenna unit provided by an embodiment of the present invention on the reverse of the Z axis, the coordinate system in FIG. 5 only illustrates the X axis and the Y axis.

Optionally, in this embodiment of the present invention, the foregoing first polarization and second polarization may be polarizations in different directions.

Exemplarily, the first polarization may be +45° polarization or horizontal polarization; the second polarization may be -45° polarization or vertical polarization.

Of course, in actual implementation, the polarization direction of the first polarization and the polarization direction of the second polarization may also be any other possible polarization directions. Specifically, it can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.

In the embodiment of the present invention, because the current flowing on the feeding arm unit has directivity when the antenna unit is working, the distribution direction of the first feeding arm in the feeding arm unit in the metal groove is along In the case of the direction from the center of the metal groove to the side wall of the metal groove, the distance between the feed arm units can be increased, that is, the interference between different feed arm units can be reduced, thereby improving the antenna unit’s Isolation can improve the polarization purity of the antenna unit.

The polarization isolation of the antenna unit provided by the embodiment of the present invention will be exemplarily described below with reference to FIG. 6.

Exemplarily, as shown in FIG. 6, it is a schematic diagram of the polarization isolation of the antenna unit when the antenna unit provided by the embodiment of the present invention works. Assume that the feed arm unit group composed of the first feed arm unit and the second feed arm unit is a horizontally polarized feed arm unit group, and the feed arm unit composed of the third feed arm unit and the fourth feed arm unit The unit group is a vertically polarized feed arm group. Then, as shown in FIG. 6, in the full frequency band where the antenna unit works (that is, all frequency bands that the antenna unit can cover), the isolation of the antenna unit is less than -115dB. However, usually the isolation of the antenna unit is -10dB to meet the actual use requirements, and the smaller the polarization isolation of the antenna unit, the higher the polarization purity of the antenna unit. Therefore, the polarization of the antenna unit can be greatly improved by the above-mentioned setting method. The isolation degree can be further optimized, so that the polarization performance of the antenna unit can be further optimized.

In the embodiment of the present invention, since the first feed arm unit group and the second feed arm unit group may be two feed arm unit groups with different polarizations (first polarization and second polarization), The antenna unit provided by the embodiment of the present invention can be formed into a dual-polarized antenna unit, which can improve the wireless connection capability of the antenna unit, thereby reducing the probability of communication disconnection of the antenna unit, that is, improving the communication capability of the antenna unit .

Optionally, in the embodiment of the present invention, when one feed arm unit in the first feed arm unit group (specifically, the first feed arm, the second feed arm, and the third feed arm in the feed arm unit) When the electric arm is in the working state, the other feeding arm unit in the first feeding arm unit group may also be in the working state. Correspondingly, when one feeding arm unit in the second feeding arm unit group is in the working state, the other feeding arm unit in the second feeding arm unit group may also be in the working state. That is, the feeding arm units in the same feeding arm unit group can work at the same time.

Optionally, in the embodiment of the present invention, when the feeding arm unit in the first feeding arm unit group is in the working state, the feeding arm unit in the second feeding arm unit group may or may not be in the working state. In working condition. Specifically, it can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.

Optionally, in the embodiment of the present invention, the cross section of the opening of the metal groove is rectangular, the symmetry axis of one feed arm unit group may be parallel to the first symmetry axis of the metal groove, and the symmetry axis of the other feed arm unit group It may be parallel to the second symmetry axis of the metal groove, and the first symmetry axis may be perpendicular to the second symmetry axis.

Exemplarily, as shown in FIG. 5, the symmetry axis of the first feeding arm unit 20310 and the feeding arm unit group formed by the second feeding arm unit 20311 may be parallel to the first symmetry axis L1 of the metal groove, and The symmetry axis of the feeding arm unit group composed of the three feeding arm unit 20312 and the fourth feeding arm unit 20313 may be parallel to the second symmetry axis L2 of the metal groove.

Optionally, in this embodiment of the present invention, the positions of the M power feeders at the bottom of the metal groove may be determined according to the positions of the M power feed arm units in the metal groove.

Optionally, in the embodiment of the present invention, the cross section of the opening of the metal groove may be rectangular, the above-mentioned M power feeders may be four power feeders, and two of the four power feeders may be located in the metal On one symmetry axis of the groove, the other two of the four power feeding portions may be located on the other symmetry axis of the metal groove.

Optionally, in the embodiment of the present invention, the two feeders electrically connected to the first feeder arm in the first feeder arm unit and the first feeder arm in the second feeder arm unit may be located in metal On a symmetry axis of the groove, the two feeding parts electrically connected to the first feeding arm in the third feeding arm unit and the first feeding arm in the fourth feeding arm unit may be located in the metal groove On the other axis of symmetry.

Optionally, in this embodiment of the present invention, the signal sources electrically connected to the two feeders located on the same axis of symmetry have the same amplitude and a phase difference of 180 degrees.

Optionally, in the embodiment of the present invention, the first feed arm unit group and the second feed arm unit group may be two feed arm unit groups distributed orthogonally, and are similar to those in the above-mentioned first feed arm unit group. The two feeders electrically connected to the first feeder arm (specifically the second end of the first feeder arm) in the feeder arm unit (the above-mentioned first feeder arm unit and the second feeder arm unit) The amplitudes of the connected signal sources are the same, and the phase difference is 180 degrees. Signals that are electrically connected to the two feeders electrically connected to the first feeder arm in the feeder arm unit (the third feeder arm unit and the fourth feeder arm unit) in the second feeder arm unit group The amplitudes of the sources are equal, and the phases are 180 degrees out of phase.

Optionally, in the embodiment of the present invention, in conjunction with FIG. 2, as shown in FIG. 7, the antenna unit 20 may further include a first insulator 204 disposed in the metal groove 201, and the first insulator 204 may carry the aforementioned feed arm Structure 203.

Wherein, each of the above-mentioned power feed arm units may be electrically connected to different power feeders among the above-mentioned M power feeders in the first insulator.

It should be noted that Figure 7 above is an exploded view of the antenna unit. In actual implementation, the first insulator can be located in the metal groove, and the feed arm structure can be located on the first insulator or in the first insulator. The groove, the M power feeders, the power feed arm structure and the first insulator may be integrated to form an antenna unit provided by the embodiment of the present invention.

Optionally, in the embodiment of the present invention, the cross-sectional shape of the first insulator may be the same as the opening shape of the metal groove. Any possible shape such as rectangle or circle.

It should be noted that, in the embodiment of the present invention, the cross-sectional shape of the above-mentioned first insulator may also be any shape that can meet actual use requirements. Specifically, it can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.

Optionally, in the embodiment of the present invention, the material of the above-mentioned first insulator may be any possible material such as plastic or foam; it can be specifically determined according to actual use requirements, and the embodiment of the present invention does not limit it.

Optionally, in the embodiment of the present invention, the material of the above-mentioned first insulator may be an insulating material with relatively small relative permittivity and loss tangent, which may be determined according to actual usage requirements, which is not limited in the embodiment of the present invention.

Exemplarily, 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 value may be 0.003.

It should be noted that, in the embodiment of the present invention, under the premise of supporting the above-mentioned feeding arm structure, the smaller the loss tangent value of the material of the first insulator, the smaller the influence of the first insulator on the radiation effect of the antenna unit. In other words, the smaller the loss tangent value of the material of the first insulator is, the less the first insulator affects the working performance of the antenna unit, and the better the radiation effect of the antenna unit.

Optionally, in the embodiment of the present invention, the feed arm structure may be carried on the above-mentioned first insulator, or may be carried in the first insulator. Specifically, it can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.

Exemplarily, as shown in FIG. 4, the feeding arm structure may be carried on the first insulator 204, and the second end of the first feeding arm in each feeding arm unit in the feeding arm structure may be the same as the above Different power feeders 202 among the M power feeders are electrically connected in the first insulator.

Optionally, in the embodiment of the present invention, the surface of the third feeding arm of the foregoing M feeding arm units may be flush with the surface where the opening of the metal groove is located.

It can be understood that the first feeding arm and the second feeding arm in each of the foregoing M feeding arm units may be located in the metal groove.

Of course, in actual implementation, the third feeding arm in the feeding arm unit may also be located at other positions in the metal groove. For example, the third feeding arm may be lower than the surface where the opening of the metal groove is located. The requirements are determined, which is not limited in the embodiment of the present invention.

In the embodiment of the present invention, because the position of the feed arm unit in the metal groove is different, the performance of the antenna unit may also be different. Therefore, the position of the feed arm structure in the metal groove can be set according to actual use requirements, so that The design of the antenna unit is more flexible.

Further, since the surface of the third feeding arm in the feeding arm unit is flush with the surface where the opening of the metal groove is located, the third feeding arm in the feeding arm unit can directly radiate electromagnetic waves outward, which can reduce the metal recess. The influence of other components in the slot on the feed arm unit can improve the radiation performance of the antenna unit provided by the embodiment of the present invention.

Optionally, in the embodiment of the present invention, as shown in FIG. 4, the bottom of the metal groove 201 may also be provided with M through holes 205 penetrating the bottom of the metal groove 201, and each of the above M power feeders is fed The parts 202 may be respectively disposed in one through hole 205.

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

Optionally, in the embodiment of the present invention, the above-mentioned M through holes may be distributed on the symmetry axis of the metal groove. Wherein, the distribution positions of the M through holes at the bottom of the metal groove can be specifically determined according to the above-mentioned distribution positions of the M power feeding parts at the bottom of the metal groove.

In the embodiment of the present invention, since it is relatively simple and easy to implement to provide through holes in the metal grooves, it is possible to provide through holes at the bottom of the metal grooves that penetrate through the bottom of the metal grooves, and to set the above M power feeding parts respectively. The method in these through holes simplifies the process of penetrating the power feed part through the metal groove.

Optionally, in the embodiment of the present invention, a second insulator may be provided in each of the above-mentioned M through holes, and the second insulator may wrap the feeder provided in the through hole.

In the embodiment of the present invention, the above-mentioned second insulator, the power feeding portion, and the through holes provided in the metal groove may form a coaxial transmission structure with a characteristic impedance of 50 ohms.

In the embodiment of the present invention, the above-mentioned second insulator wraps the power feeding part provided in the through hole, so that the power feeding part can be fixed in the through hole.

Exemplarily, as shown in FIG. 4, a plurality of through holes 205 are provided at the bottom of the metal groove 201, each through hole 205 is provided with a second insulator 206, and the power feeder 202 can pass through the second insulator 206 provided in the through hole 205 The two insulators 206 are electrically connected in the first insulator 204 with the first feeding arm 2031a (specifically, the second end of the first feeding arm) in the feeding arm unit.

It should be noted that the signal source 30 electrically connected to the other end of the power feeder 202 in FIG. 4 may be a millimeter wave signal source in an electronic device.

In the embodiment of the present invention, the material of the above-mentioned second insulator may be an insulating material with a relatively small relative permittivity.

Optionally, in this embodiment of the present invention, the material of the above-mentioned second insulator may be any possible material such as foam material or plastic material.

Optionally, in the embodiment of the present invention, the material of the second insulator and the first insulator may be the same insulating material, or may be different insulating materials. Specifically, it can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.

In the embodiment of the present invention, on the one hand, since the diameter of the through hole may be larger than the diameter of the power feeding part, when the power feeding part is provided in the through hole, the power feeding part may not be fixed in the through hole, so the through hole may not be fixed in the through hole. The above-mentioned second insulator is arranged in the hole, and the way in which the second insulator wraps the power feeding part can make the power feeding part be fixed in the through hole. On the other hand, since the metal groove and the feeding part are made of metal, during the operation of the antenna unit, the two may contact and cause a short circuit. Therefore, the above-mentioned second insulator can be added to the through hole. , Isolate the power feeding part and the metal groove, so that the power feeding part is insulated from the metal groove, so that the antenna performance of the electronic device can be more stable.

It should be noted that, in the embodiment of the present invention, the antenna units shown in each of the foregoing drawings are all exemplified in conjunction with a drawing in the embodiment of the present invention. During specific implementation, the antenna units shown in each of the above figures can also be implemented in combination with any other figures illustrated in the above embodiments that can be combined, and will not be repeated here.

An embodiment of the present invention provides an electronic device, and the electronic device may include the antenna unit provided in any one of the above-mentioned embodiments in FIG. 2 to FIG. 7. For the specific description of the antenna unit, reference may be made to the relevant description of the antenna unit in the foregoing embodiment, which will not be repeated here.

The electronic device in the embodiment of the present invention may be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a handheld computer, a vehicle terminal, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (personal digital assistant). The non-mobile electronic device may be a personal computer (PC), a television (television, TV), a server, or a teller machine, etc., which is not specifically limited in the embodiment of the present invention.

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

In the embodiment of the present invention, the above-mentioned at least one first groove may be provided in the housing of the electronic device, and at least one antenna unit provided in the embodiment of the present invention may be arranged in each first groove, so that the electronic device At least one antenna unit provided in the embodiment of the present invention is integrated, so that the electronic device can include an antenna array composed of the antenna unit provided in the embodiment of the present invention.

Optionally, in the embodiment of the present invention, the above-mentioned first groove may be provided in the frame of the housing of the electronic device.

In the embodiment of the present invention, as shown in FIG. 8, the electronic device 4 may include a housing 40. The housing 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 the third metal frame 43 and the first metal frame. 41 are connected to the fourth metal frame 44. The electronic device 4 may further include a floor 45 connected to both the second metal frame 42 and the fourth metal frame 44, and a floor 45 which is arranged in the third metal frame 43, a part of the second metal frame 42, and a part of the fourth metal frame 44. The first antenna 46 of the area (specifically, these metal frames may also be a part of the first antenna). Wherein, a first groove 47 is provided on the second metal frame 42. In this way, the antenna unit provided in the embodiment of the present invention can be disposed in the first groove, so that the electronic device can include the array antenna module formed by the antenna unit provided in the embodiment of the present invention, and the integration of the device in the electronic device can be realized. The design of the antenna unit provided by the embodiment of the invention.

In the embodiment of the present invention, the above-mentioned floor can be a PCB, a metal middle frame in an electronic device, or a display screen of an electronic device, etc., which can be any part that can be used as a virtual ground.

It should be noted that in the embodiment of the present invention, the above-mentioned first antenna may be a second-generation mobile communication system (ie 2G system), a third-generation mobile communication system (ie 3G system), and a fourth-generation mobile communication system of an electronic device. The communication antenna of the system (ie 4G system) and other systems. The antenna unit (an antenna unit formed by metal grooves, M feeders, M feed arm units and other components) integrated in the electronic device in the embodiment of the present invention may be an antenna of the 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 connected end to end in sequence to form a closed frame; or, the first metal frame, the second metal frame Part of the frame, the third metal frame, and the fourth metal frame may be connected to form a semi-closed 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 a semi-closed frame; Open border. Specifically, it can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.

It should be noted that the frame 40 included in the housing 40 shown in FIG. 8 is a closed frame formed by connecting the first metal frame 41, the second metal frame 42, the third metal frame 43, and the fourth metal frame 44 sequentially. It is taken as an example for illustrative description, which does not impose any limitation on the embodiment of the present invention. For the frame formed by other connection methods (partial frame connection or non-connection of each frame) between the first metal frame, the second metal frame, the third metal frame, and the fourth metal frame, the implementation manner is the same as that of the embodiment of the present invention. The implementations provided are similar, and to avoid repetition, I won’t repeat them here.

Optionally, in the embodiment of the present invention, the above-mentioned at least one first groove may be arranged in the same frame of the housing, or may be arranged in different frames. Specifically, it can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.

Optionally, in the embodiment of the present invention, multiple first grooves may be provided on the housing of the electronic device, so that multiple antenna units provided in the embodiment of the present invention may be provided in the electronic device, so that the electronic device Including multiple antenna units to improve the antenna performance of the electronic device.

In the embodiment of the present invention, when multiple antenna units are provided in the electronic device, according to the structure of the antenna unit, the distance between two adjacent first grooves can be reduced, that is, the distance between two adjacent antenna units can be reduced In this way, when the electronic device includes a small number of antenna units, the feed arm structure in the antenna unit (specifically, the first feed arm and the second feed arm in the feed arm unit in the feed arm structure can be increased). The scanning angle of the electromagnetic wave beams radiated by the feeding arm and the third feeding arm), so that the scanning range of the millimeter wave antenna of the electronic device can be increased.

Optionally, in this embodiment of the present invention, the metal groove in the antenna unit may be a part of the housing of the electronic device. It can be understood that the metal groove may be a groove provided on the 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 present invention, since the housing of the electronic device can also be used as the radiator of the non-millimeter wave antenna in the electronic device, the antennas (millimeter wave antenna and non-millimeter wave antenna) in the electronic device can be integrated into one, thereby Significantly reduce the space occupied by the antenna in the electronic device.

Optionally, in the embodiment of the present invention, the above-mentioned metal groove may be provided on the metal frame of the housing of the electronic device.

Exemplarily, as shown in FIG. 9, the housing 40 of the electronic device 4 provided by the embodiment of the present invention may be provided with at least one metal groove 201, the feed arm structure in the antenna unit, and M feed parts and other components. It can be arranged in the metal groove 201 (actually, the metal groove is not visible at the angle of the electronic device shown in FIG. 9).

Optionally, in the embodiment of the present invention, a metal groove may be provided in any one of the first metal frame, the second metal frame, the third metal frame, and the fourth metal frame of the housing. Specifically, it can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.

It can be understood that in the case where the metal groove is provided on the frame of the housing (for example, the first metal frame, etc.), the sidewalls of the metal groove, the bottom of the metal groove, etc. in the embodiment of the present invention can all be electronic devices. A part of may specifically be a part of the frame of the housing provided by the embodiment of the present invention.

It should be noted that, in the embodiment of the present invention, the above-mentioned FIG. 9 is that the metal groove 201 is provided on the first metal frame 41 of the housing 40, and the opening direction of the metal groove is the coordinate system shown in FIG. The positive direction of the Z axis is taken as an example for illustration.

It can be understood that, in the embodiment of the present invention, as shown in FIG. 9, when the metal groove is arranged on the second metal frame of the housing, the opening direction of the metal groove may be the positive X axis; when the metal groove is arranged on the When the metal groove is on the third metal frame of the housing, the opening direction of the metal groove can be reverse to the Z axis; when the metal groove is provided on the fourth metal frame of the housing, the opening direction of the metal groove can be reverse to the X axis. to.

In the embodiment of the present invention, since the above-mentioned metal groove can be provided based on the metal frame of the electronic device to provide the antenna unit provided by the embodiment of the present invention on the metal frame, the metal texture of the electronic device may not be affected to maintain the electronic device The integrity of the metal frame can maintain the proportion of metal in the electronic device.

In addition, the metal frame of the electronic device itself is used as the reflector of the antenna unit to obtain higher gain. At the same time, the antenna unit is not sensitive to the environment and components inside the electronic device, which facilitates the design of structural stacking of the electronic device.

Optionally, in the embodiment of the present invention, multiple metal grooves may be provided in the housing of the electronic device, and each metal groove is provided with the power feeding arm structure and M power feeding parts in the embodiment of the present invention, etc. A component, so that a plurality of antenna units provided in the embodiments of the present invention can be integrated in an electronic device, so that these antenna elements can form an antenna array, so that the antenna performance of the electronic device can be improved.

In the embodiment of the present invention, as shown in FIG. 10, it is the radiation pattern of the antenna unit when the antenna unit provided by the embodiment of the present invention radiates a signal with a frequency of 28 GHz; as shown in FIG. 11, it is the antenna provided by the embodiment of the present invention. When the unit radiates a signal with a frequency of 39 GHz, the radiation pattern of the antenna unit. It can be seen from FIGS. 10 and 11 that the maximum radiation direction of the antenna unit at 28 GHz is the same as the maximum radiation direction of the antenna unit at 39 GHz. Therefore, the antenna unit provided by the embodiment of the present invention is suitable for forming a broadband antenna array. In this way, the electronic device may be provided with at least two metal grooves, and each of the metal grooves is provided with the above-mentioned feeding arm structure and M feeding parts and other components, so that the electronic device includes a plurality of components provided by the embodiments of the present invention. The antenna unit can be made to include an antenna array composed of the antenna unit in the electronic device, thereby improving the antenna performance of the electronic device.

Optionally, in the embodiment of the present invention, when multiple antenna units provided in the embodiment of the present invention are integrated in an electronic device, the distance between two adjacent antenna units (that is, the distance between two adjacent metal grooves) The distance between the separations can be determined according to the isolation of the antenna units and the scanning angle of the antenna array formed by the multiple antenna units. Specifically, it can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.

Optionally, in the embodiment of the present invention, the number of metal grooves provided in the housing of the electronic device may be determined according to the size of the 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. 12, it is a bottom view of a plurality of antenna units provided on a housing provided by an embodiment of the present invention in the positive direction of the Z axis (coordinate system as shown in FIG. 9). Assuming that the metal groove is a rectangular groove, as shown in FIG. 12, the third metal frame 43 is provided with a plurality of antenna units provided by the embodiment of the present invention (each antenna unit is formed by the metal groove 201 on the housing and is arranged in M power feeding parts (not shown in the figure) at the bottom of the metal groove, and components such as the power feeding arm structure 203 arranged in the metal groove are formed).

It should be noted that, in the embodiment of the present invention, the above-mentioned FIG. 12 exemplifies the four antenna units provided on the third metal frame as an example, which does not limit the embodiment of the present invention in any way. It can be understood that, during specific implementation, the number of antenna units provided on the third metal frame may be determined according to actual use requirements, and the embodiment of the present invention does not make any limitation.

An embodiment of the present invention provides an electronic device, which may include an antenna unit. The antenna unit may include: a metal groove, M feeders arranged at the bottom of the metal groove, and M feeder arm structures arranged in the metal groove; wherein the feeder arm structure includes M feeder arms Unit, each feeding arm unit includes a first feeding arm, a second feeding arm electrically connected to the first end of the first feeding arm, and a third feeding arm electrically connected to the second feeding arm; The second end of the first feeder arm in each feeder arm unit is electrically connected to different feeders in the M feeder units, and the third one of the feeder arm units in the M feeder arm units The feeder arms are electrically connected to each other, and the connection point electrically connected to each other is the current zero point of the M feeder arm units, and M is an integer greater than 1. With this solution, since the connection point at which the third feeder arm of each feeder arm unit of the M feeder arm units is electrically connected to each other is the current zero point of the M feeder arm units, the feeder arm units can work independently , That is, it will not be interfered by other feeding arm units; and since the feeding arm unit includes the first feeding arm, the second feeding arm and the third feeding arm, when the feeding part transmits the AC signal to the feeding arm When the arm unit is installed, there can be multiple paths of current passing through the feeding arm unit, such as the current path formed on the first feeding arm, the current path from the first feeding arm to the second feeding arm, and the first feeding arm. The current path from the arm to the second feeding arm and then to the third feeding arm, etc., so that the frequency of the electromagnetic wave radiated by the feeding arm unit can also be multiple, so that the antenna unit can obtain a wider bandwidth, which can Increase the frequency band covered by the antenna unit.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or device that includes the element.

The embodiments of the application are described above with reference to the accompanying drawings, but the application is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of this application, many forms can be made without departing from the purpose of this application and the scope of protection of the claims, all of which fall within the protection of this application.

Claims (13)

1. An antenna unit, the antenna unit comprising: a metal groove, M feeding parts arranged at the bottom of the metal groove, and a feeding arm structure arranged in the metal groove;

   Wherein, the feeding arm structure includes M feeding arm units, and each feeding arm unit includes a first feeding arm, a second feeding arm electrically connected to the first end of the first feeding arm, and A third feeder arm electrically connected to the second feeder arm; the second end of the first feeder arm in each feeder arm unit is electrically connected to different feeders in the M feeders, The third feeding arm in each feeding arm unit of the M feeding arm units is electrically connected to each other, and the connection point electrically connected to each other is the current zero point of the M feeding arm units, and M is greater than 1. Integer.
2. The antenna unit according to claim 1, wherein the first feeding arm and the third feeding arm in each feeding arm unit are both parallel to the surface where the opening of the metal groove is located, and each feeding arm unit The second feeding arm of the electric arms is perpendicular to the first feeding arm and the third feeding arm.
3. The antenna unit according to claim 1, wherein the distance between the first end of the first feeding arm in each feeding arm unit and the center of the metal groove is greater than that of the first feeding arm. The distance between the second end and the center of the metal groove.
4. The antenna unit according to claim 1, wherein the M feed arm units are four feed arm units, and the four feed arm units form two feed arm unit groups, and each feed arm unit The unit group includes two feed arm units symmetrically arranged, and the symmetry axis of one feed arm unit group is orthogonal to the symmetry axis of the other feed arm unit group.
5. The antenna unit according to claim 4, wherein the cross section of the opening of the metal groove is rectangular, the symmetry axis of one feeding arm unit group is parallel to the first symmetry axis of the metal groove, and the other feeding arm is parallel to the first symmetry axis of the metal groove. The symmetry axis of the unit group is parallel to the second symmetry axis of the metal groove, and the first symmetry axis is perpendicular to the second symmetry axis.
6. 5. The antenna unit according to any one of claims 1 to 5, wherein the M power feeding portions penetrate the bottom of the metal groove and are insulated from the metal groove.
7. The antenna unit according to any one of claims 1 to 5, wherein the cross section of the opening of the metal groove is rectangular, the M power feeders are four power feeders, and the four power feeders Two of the power feeders are located on one axis of symmetry of the metal groove, and the other two power feeders of the four power feeders are located on the other axis of symmetry of the metal groove.
8. 7. The antenna unit according to claim 7, wherein the signal sources electrically connected to the two feeders located on the same axis of symmetry have the same amplitude and a phase difference of 180 degrees.
9. The antenna unit according to any one of claims 1 to 5, wherein the antenna unit further comprises a first insulator disposed in the metal groove, and the first insulator carries the feed arm structure;

   Wherein, each of the power feed arm units is electrically connected to a different power feeder of the M power feeders in the first insulator.
10. The antenna unit according to any one of claims 1 to 5, wherein the surface of the third feeding arm of the M feeding arm units is flush with the surface where the opening of the metal groove is located.
11. An electronic device, wherein the electronic device comprises at least one antenna unit according to any one of claims 1 to 9.
12. The electronic device according to claim 11, wherein at least one first groove is provided in the housing of the electronic device, and at least one first groove is provided in each of the at least one first grooves.述 Antenna unit.
13. The electronic device according to claim 12, wherein the metal groove in the antenna unit is a part of the housing of the electronic device.

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