WO2021083213A1 - Antenna unit and electronic device - Google Patents

Abstract

Provided are an antenna unit and an electronic device in the embodiments of the present invention. The antenna unit comprises a metal groove, M feed parts arranged at the bottom of the metal groove, and M feed arms arranged in the metal groove, wherein each of the M feed parts is electrically connected to a first end of the respective feed arm and is insulated from the metal groove; the M feed arms are arranged in the metal groove in a surrounding manner in a first order; each feed arm of the M feed arms is coupled with the metal groove; 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 201911049923.5, and the application name is "an antenna unit and electronic equipment" on October 31, 2019. The entire content is incorporated herein 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.

At present, 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 (26.5-29.5GHz) frequency band and the 39GHz main n260 (37.0-40.0GHz) frequency band, etc. Therefore, the traditional millimeter wave antenna module may not be able to cover the mainstream millimeter wave frequency band planned in the 5G system. As a result, the antenna performance of the electronic device is poor.

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, this application 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 feeding parts arranged at the bottom of the metal groove, and M feeding arms arranged in the metal groove Wherein, each of the M feeders is electrically connected to the first end of a feeder arm and insulated from the metal groove, and the M feeder arms are arranged around in the first order Inside the metal groove and each of the M feeding arms are coupled with the metal groove, 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 power feed portions arranged at the bottom of the metal groove, and M power feed arms arranged in the metal groove; wherein the M power feeders Each of the feeding parts is electrically connected to the first end of a feeding arm and insulated from the metal groove, and the M feeding arms are arranged in the metal groove in a first order, and the M Each of the feed arms is coupled with the metal groove, and M is an integer greater than 1. With this solution, since the feeding arm can be coupled with the metal groove (which can be used as the radiator of the antenna unit), when the feeding arm receives an AC signal, the feeding arm can be coupled with the metal groove, so that The metal groove generates induced current, so that both the feeding arm and the metal groove can radiate electromagnetic waves of a certain frequency; and, the current path of the induced current generated by the coupling of the feeding arm and the metal groove can have multiple current paths (for example, from The current path from the feeding arm to the metal groove and then to the feeding arm, the current path formed on the metal groove, etc.), so the frequency of the electromagnetic wave generated by the current on the feeding arm through the metal groove can also be multiple In this way, the antenna unit can cover multiple frequency bands, so that the frequency band covered by the antenna unit can be increased. And since the M feeding arms are arranged in the metal groove in the first order, the distance between the respective feeding arms of the M feeding arms can be made larger, so that the M feeding arms can be reduced. The interference between the arms can improve the isolation of the antenna port, and further improve the performance of the antenna unit.

Description of the drawings

FIG. 1 is a schematic structural diagram of a conventional packaged antenna according to 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 schematic diagram of the structure of a feed arm 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 a cross-sectional view of an antenna unit provided by an embodiment of the present invention;

FIG. 8 is the second exploded view of the antenna unit provided by the embodiment of the present invention;

FIG. 9 is one of the schematic diagrams of the hardware structure of an electronic device provided by an embodiment of the present invention;

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

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

FIG. 12 is the second radiation pattern diagram of the antenna unit provided by the embodiment of the present invention;

Fig. 13 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; 202a—the first end of the feeder; 203—the first end of the feeder arm; 203a—the first end of the feeder arm; 204—the first insulator; 205—the second insulator; Three insulators; S1—first inner side wall; S2—second inner side wall; L1—first diagonal line; L2—second diagonal line; 30—5G millimeter wave signal; 4-electronic device; 40—shell; 41—first metal frame; 42—second metal frame; 43—third metal frame; 44—fourth metal frame; 45—floor; 46—first antenna; 47—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 this application.

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. The symbol "/" in this document 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.

Coupling: refers to the close coordination and mutual influence between the input and output of two or more circuit elements or electrical networks, and energy can be transmitted from one side to the other through the interaction.

The “coupling” in the embodiment of the present invention can be used to indicate that the coupled components (such as the M feed arms and metal grooves in the embodiment) can be coupled when the antenna unit is working; Under working conditions, these parts are insulated from each other.

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.

The embodiment of the present invention provides an antenna unit and an electronic device. The antenna unit may include: a metal groove, M feeding parts arranged at the bottom of the metal groove, and M feeding arms arranged in the metal groove; wherein , Each of the M feeders is electrically connected to the first end of a feeder arm and insulated from the metal groove, and the M feeder arms are arranged around the metal recess in the first order. Inside the slot, and each of the M feeding arms are coupled with the metal groove, and M is an integer greater than 1. With this solution, since the feeding arm can be coupled with the metal groove (which can be used as the radiator of the antenna unit), when the feeding arm receives an AC signal, the feeding arm can be coupled with the metal groove, so that The metal groove generates induced current, so that both the feeding arm and the metal groove can radiate electromagnetic waves of a certain frequency; and, the current path of the induced current generated by the coupling of the feeding arm and the metal groove can have multiple current paths (for example, from The current path from the feeding arm to the metal groove and then to the feeding arm, the current path formed on the metal groove, etc.), so the frequency of the electromagnetic wave generated by the current on the feeding arm through the metal groove can also be multiple In this way, the antenna unit can cover multiple frequency bands, so that the frequency band covered by the antenna unit can be increased. And since the M feeding arms are arranged in the metal groove in the first order, the distance between the respective feeding arms of the M feeding arms can be made larger, so that the M feeding arms can be reduced. The interference between the arms can improve the isolation of the antenna port, and further improve the performance of the antenna unit.

The antenna unit provided by the embodiment of the present invention can be applied to electronic equipment, and can also be applied to other electronic equipment that needs to use the antenna unit, and can be specifically determined according to actual use requirements, and the embodiment of the present invention does not limit it. 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 power feeding portions 202 arranged at the bottom of the metal groove 201, and M power feeding arms 203 arranged in the metal groove 201.

Wherein, each of the above-mentioned M feeders 202 can be electrically connected to the first end 203a of one feeder arm and insulated from the metal groove 201, and the M feeder arms 203 can be in accordance with the first end 203a. They are sequentially arranged around the metal groove 201, and each of the M feed arms 203 can be coupled with the metal groove 201, where M is an integer greater than one.

It can be understood that the above-mentioned metal groove may be used as a radiator of the antenna unit provided by 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, the component parts of the antenna unit are all in a separated state. In actual implementation, the above-mentioned M power feeders and M power feed arms are all set in the metal groove, that is, the metal groove, M power feeders and M power feed arms form a whole to form a unit. An antenna unit provided by an embodiment of the invention.

In addition, the feeder 202 and the first end 203a of the feeder arm in FIG. 2 are not shown in an electrically connected state. In actual implementation, the feeder 202 may be electrically connected to the first end 203a of the feeder arm.

Optionally, in the embodiment of the present invention, the above-mentioned first order may be a clockwise order or a counterclockwise order. 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, taking the foregoing M feeding arms arranged in a clockwise order around the metal groove as an example, it is assumed that the foregoing M feeding arms are four feeding arms (the structure of the four feeding arms is (May be the same), the four feeding arms can follow from the first end of the first feeding arm to the second end of the first feeding arm, and then from the first end to the second end of the second feeding arm. The second end of a feed arm, then from the first end of the third feed arm to the second end of the third feed arm, and finally from the first end of the fourth feed arm to the fourth feed arm The order of the second end of the electric arm is arranged in the metal groove in a clockwise order.

It should be noted that, in the embodiment of the present invention, when the M feed arms are arranged in the metal groove in the first order, the first end of each feed arm of the M feed arms The distances between the two are relatively large, so that the mutual interference between the various feed arms can be reduced.

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, and the AC signal can be transmitted to the feeding arm through the feeding part. Then, after the feeding arm receives the AC signal, the feeding arm can be coupled with the metal groove, so that the metal groove generates an induced current; then, the metal groove can radiate electromagnetic waves of multiple frequencies (due to the feeding arm There can be multiple current paths for the induced current coupled with the metal groove, such as the current path from the feeding arm to the metal groove and then to the feeding arm, the current path formed on the metal groove, etc., so There can also be multiple frequencies of electromagnetic waves radiated by the current on the feeding arm through the metal groove). In this way, 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 where the electronic device is located can excite the metal groove, so that the metal groove can generate an induced current. After the induced current is generated in the metal groove, the metal groove can be coupled with the feeding arm, so that the feeding arm generates an induced AC signal (ie, an induced AC signal). Then, the power feeding arm can input the AC signal to the receiver in the electronic device through the power 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 26.5GHz-40GHz, which can include multiple millimeter wave frequency 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 26.5GHz-29.5GHz and 37GHz-40GHz, and this frequency range can also include multiple main millimeter wave frequency bands (for example, n257 and n260). In this way, the antenna unit provided by the embodiment of the present invention can cover most of the 5G millimeter wave frequency band, thereby improving the antenna performance of the electronic device.

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 The performance is better.

In addition, point a, point b, point c, and point d in Figure 3 above are used to mark the return loss value. It can be seen from Figure 3 that the return loss value marked by point a is -10.419dB, and the value marked by point b The value of return loss is -12.094dB, the value of return loss marked at point c is -10.551dB, and the value of return loss marked at point d is -11.839dB. That is, the antenna unit provided by the embodiment of the present invention can ensure better performance on the basis of meeting actual use requirements.

The embodiment of the present invention provides an antenna unit. Since the feeding arm can be coupled with the metal groove (which can be used as the radiator of the antenna unit), when the feeding arm receives an AC signal, the feeding arm can be connected to the metal recess. Groove coupling, so that the metal groove can generate induced current, so that both the feeding arm and the metal groove can radiate electromagnetic waves of a certain frequency; and the current path of the induced current generated by the coupling of the feeding arm and the metal groove can be There are multiple current paths (such as the current path from the feeding arm to the metal groove to the feeding arm, the current path formed on the metal groove, etc.), so the current on the feeding arm is caused by the electromagnetic wave generated by the metal groove. There can also be multiple frequencies, so that the antenna unit can cover multiple frequency bands, so that the frequency band covered by the antenna unit can be increased. And since the M feeding arms are arranged in the metal groove in the first order, the distance between the respective feeding arms of the M feeding arms can be made larger, so that the M feeding arms can be reduced. The interference between the arms can improve the isolation of the antenna port, and further improve the performance of the antenna unit.

Optionally, in the embodiment of the present invention, the distance between each of the foregoing M feed arms and the inner surface of the metal groove may be greater than half of the first distance.

Wherein, the above-mentioned first distance may be the distance between the surface where the opening of the metal groove is located and the inner surface of the bottom of the metal groove.

Of course, in actual implementation, the distance between each of the above M feed arms and the inner surface of the bottom of the metal groove can also be any other possible value, which can be specifically determined according to actual use requirements. The implementation of the present invention The examples are not limited.

In the embodiment of the present invention, since the above M feed arms are arranged in the metal groove, in order to ensure that the antenna unit provided in the embodiment of the present invention can effectively radiate electromagnetic waves, that is, the antenna unit can effectively radiate energy and ensure that the antenna unit The impedance matching characteristics (the impedance of the energy transmitted from the feeding part to the feeding arm is 50 ohms), and a proper distance should be maintained between the feeding arm and the inner surface of the bottom of the metal groove.

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 opening shape of the metal groove may be a rectangle; when the metal groove is a circular groove, the opening shape 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 above-mentioned M power feeding portions may penetrate the bottom of the metal groove.

Specifically, in actual implementation, as shown in FIG. 2, the first end 202a of the power feeder may be electrically connected to the first end 203a of the feeder arm, and the second end of the power feeder (not shown in FIG. 2) It 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 feeding arm through the feeding part, and then coupled to the metal groove through the feeding arm, so that the metal groove can generate induced current, which can make the metal groove Electromagnetic waves of a certain frequency are radiated. In this way, the antenna unit provided in the embodiment of the present invention can radiate 5G millimeter wave signals in the electronic device.

Optionally, in this embodiment of the present invention, each of the foregoing M power feeders may form an "L-shaped" power feed structure with a power feed arm connected to it.

Optionally, in the embodiment of the present invention, one feed arm (any one of the above-mentioned M feed arms) may be a feed arm with a symmetrical structure. For example, the structure of the feeding arm can be symmetrical in the horizontal direction, or symmetrical in the vertical direction. Specifically, it can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.

Optionally, in this embodiment of the present invention, one feed arm (that is, any one of the above-mentioned M feed arms) may be any of the following feed arms: rectangular feed arms, "T" shaped feed arms Electric arm, "Y"-shaped feed arm.

Of course, in actual implementation, the aforementioned one feeding arm may also be any other possible feeding arms. 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 above-mentioned M feeding arms may be the same kind of feeding arms (for example, the M feeding arms are all "Y"-shaped feeding arms), or different feeding arms ( For example, some of the M feed arms are “T”-shaped feed arms, and the other part of the feed arms is “Y”-shaped feed arms). Specifically, it can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.

Exemplarily, the foregoing M feed arms may all be “T”-shaped feed arms 203 as shown in FIG. 2, and may also be all “Y”-shaped feed arms 203 as shown in FIG. 4.

In the embodiment of the present invention, since the coupling amount of the feeding arm of different forms (such as shape, material, structure, etc.) and the metal groove may be different, and the impedance requirements of the feeding arm of different forms may also be different, that is, different Different types of feed arms may have different effects on the working performance of the antenna unit. Therefore, a suitable feed arm can be selected according to the actual use requirements of the antenna unit, so that the antenna unit can work in a suitable frequency range.

Optionally, in the embodiment of the present invention, the above-mentioned M feeding arms may be arranged in the order from the first end of the feeding arm to the second end of the feeding arm along the inner side wall of the metal groove according to the above-mentioned first sequence. In the metal groove.

That is to say, according to the above-mentioned first sequence, the second end of one of the above-mentioned M feeding arms may be adjacent to the first end of the next feeding arm adjacent to the one feeding arm.

Exemplarily, as shown in FIG. 5, it is a top view of the antenna unit provided by an embodiment of the present invention on the reverse Z axis (for example, the coordinate system shown in FIG. 2). Assuming that the foregoing first sequence is a clockwise sequence, the foregoing M feed arms are four feed arms, namely the first feed arm 2030, the second feed arm 2032, the third feed arm 2031, and the fourth feed arm. Electric arm 2033. Among them, the four feeding arms can follow from the first end of the first feeding arm 2030 to the second end of the first feeding arm 2030, and then to the first end of the second feeding arm 2032, and then from the second feeding arm 2032. The first end of the electric arm 2032 to the second end of the second feeding arm 2032, to the first end of the third feeding arm 2031, and then from the first end of the third feeding arm 2031 to the third feeding arm The second end of 2031, then to the first end of the fourth feeding arm 2033, and finally from the first end of the fourth feeding arm 2033 to the second end of the fourth feeding arm 2033, and then to the first feeding arm The order of the first end of the 2030 is arranged in the metal groove in a clockwise order. It can be seen from FIG. 5 that the first feeding arm, the second feeding arm, the third feeding arm, and the fourth feeding arm may form a ring-like shape. That is to say, the first power feed arm, the second power feed arm, the third power feed arm and the fourth power feed arm are circumferentially arranged in the metal groove.

In the embodiment of the present invention, since the current flowing on the feed arm is directional when the antenna unit is working, the first ends of different feed arms can be added by arranging the M feed arms in the first order. (That is, the distance between the first end of one feeding arm and the first end of other feeding arms is relatively large), so that the interference between different feeding arms can be reduced, and the antenna unit can be improved The isolation of the port (that is, the feed port of the antenna unit). And because the feeding arms are arranged along the inner side wall of the metal groove, the feeding arms can be distributed in the metal groove relatively discretely, thereby further reducing the interference between the feeding arms, and further improving the antenna unit The isolation of the port.

Optionally, in the embodiment of the present invention, the metal groove is a rectangular groove, and the aforementioned M feeding arms may include a first feeding arm, a second feeding arm, a third feeding arm, and a fourth feeding arm. The first feeding arm, the second feeding arm, the third feeding arm and the fourth feeding arm are sequentially arranged in the metal groove along the inner side wall of the metal groove.

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

It should be noted that, in the embodiment of the present invention, the above-mentioned first feeding arm, second feeding arm, third feeding arm, and fourth feeding arm may also be arranged around in the metal groove in any other possible manner. For example, both the first feeding arm and the third feeding arm may be parallel to the second inner side wall of the metal groove, and both the second feeding arm and the fourth feeding arm may be parallel to the first inner side wall of the metal groove. 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. 5, both the first feeding arm 2030 and the third feeding arm 2031 may be parallel to the inner side wall S1 of the metal groove (that is, the above-mentioned first inner side wall), and the second feeding arm 2032 and The fourth feeding arms 2033 can all be parallel to the inner side wall S2 of the metal groove (that is, the above-mentioned second inner side wall). And it can be seen from FIG. 5 that the inner side wall S1 is perpendicular to the inner side wall S2.

It should be noted that, since FIG. 5 is a top view of the antenna unit provided by the embodiment of the present invention in the reverse direction of the Z axis, the first inner side wall and the second inner side wall of the metal groove are both indicated by horizontal lines in FIG. 5.

Optionally, in the embodiment of the present invention, the first feeding arm and the third feeding arm may form a feeding arm group (hereinafter referred to as the first feeding arm group), and the second feeding arm may be combined with the first feeding arm. The four feeding arms form a feeding arm group (hereinafter referred to as the second feeding arm group).

In the embodiment of the present invention, as can be seen from FIG. 5, the first, second, third, and fourth feed arms are arranged in the metal groove in sequence along the inner side wall of the metal groove. The feeding arms are arranged in such a manner that the distance between the first feeding arm 2030 and the third feeding arm 2031 is relatively large, and the distance between the second feeding arm 2032 and the fourth feeding arm 2033 is relatively large.

In the embodiment of the present invention, since the greater the distance between the feeding arms in one feeding arm group, the smaller the influence of the feeding arm group on other feeding arm groups. Therefore, the above-mentioned first feeding arm can be , The second feeding arm, the third feeding arm and the fourth feeding arm are arranged in the metal groove in sequence along the inner side wall of the metal groove, increasing the above two feeding arm groups (first feeding arm The distance between the feeder arms in the second feeder arm group and the second feeder arm group, so that during the operation of the antenna unit, the mutual influence between these feeder arm groups can be reduced, thereby reducing the distance provided by the embodiment of the present invention. Interference between different polarizations of the antenna.

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

Optionally, in this embodiment of the present invention, the foregoing first polarization and 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, and so on.

Exemplarily, as shown in FIG. 5, the first feeding arm group composed of the first feeding arm 2030 and the third feeding arm 2031 may be a horizontally polarized (that is, the aforementioned first polarized) feeding arm group; The second feeding arm group composed of the second feeding arm 2032 and the fourth feeding arm 2033 may be a feeding arm group of vertical polarization (that is, the aforementioned 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 reversely, the feeding part is not visible. Therefore, the feeding part in FIG. 5 is indicated by a dotted line.

Of course, in actual implementation, the foregoing first polarization and second polarization may also be any other possible polarization forms. 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, since the first feeding arm group and the second feeding arm group may be two feeding arm groups polarized in different directions (first polarization and second polarization), it is possible to make The antenna unit provided by the embodiment of the present invention can form 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, and further improving the communication capability of the antenna unit.

Optionally, in the embodiment of the present invention, the feeding arms in the same feeding arm group may work at the same time. 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 may 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 may also be in the working state.

Optionally, in the embodiment of the present invention, when the feeding arms in the first feeding arm group are in a working state, the feeding arms in the second feeding arm group may or may not be in a working state. 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, since the antenna unit may include two feeder arm groups, the electronic device can transmit and receive signals through the two feeder arm groups in the antenna unit, that is, it can be provided by the embodiment of the present invention. The antenna unit implements MIMO technology, which can increase the communication capacity and communication rate of the antenna unit, thereby increasing the data transmission rate of the antenna unit.

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

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

In the embodiment of the present invention, due to the different distances between the aforementioned M feeding arms and the bottom of the metal groove, the coupling parameters when the aforementioned M feeding arms are coupled to the metal groove may be different, for example, the aforementioned M feeding arms and the bottom of the metal groove may be different. The induced current generated by the coupling of the metal groove may be different, so the distance between the M feed arms and the bottom of the metal groove can be flexibly set according to the actual use requirements of the antenna unit (for example, the frequency range covered by the antenna unit).

In addition, since the distances between the M feeding arms and the bottom of the metal groove are all equal, it is convenient to control the coupling parameters of the M feeding arms and the metal groove, such as the induced current generated by the coupling, etc. Therefore, by arranging the M feeding arms on the same plane, the distances between the different feeding arms and the metal grooves are all equal, which can facilitate the control of the working state of the antenna unit provided by the embodiment of the present invention. .

Optionally, in the embodiment of the present invention, the metal groove is a rectangular groove, the above M power feeders may be four power feeders, and two of the four power feeders may be located in the metal groove The other two of the four power feeders may be located on the other diagonal line of the metal groove.

Optionally, in the embodiment of the present invention, the two feeders electrically connected to the first feeder arm and the third feeder arm may be located on a diagonal line of the metal groove and are connected to the second feeder arm. The two feeding parts electrically connected to the fourth feeding arm may be located on the other diagonal line of the metal groove.

Exemplarily, as shown in FIG. 5, the feeder 2020 electrically connected to the first feeder arm 2030 (specifically may be the first end of the first feeder arm) and the third feeder arm 2031 (specifically may be The feeding portion 2021 electrically connected to the first end of the third feeding arm may be located on the first diagonal line L1 of the metal groove, and is connected to the second feeding arm 2032 (specifically, the first feeding arm of the second feeding arm). End) the feeding portion 2022 electrically connected to the fourth feeding arm 2033 (specifically the first end of the fourth feeding arm) may be located on the second diagonal line L2 of the metal groove on. In this way, 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, so that the mutual interference between different polarizations can be further reduced.

In the following, with reference to FIG. 6, the isolation of the antenna unit provided by the embodiment of the present invention will be exemplarily described.

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 group composed of the first feed arm and the third feed arm is a horizontally polarized feed arm group, and the feed arm group composed of the second feed arm and the fourth feed arm is a vertically polarized feed arm group The feeding arm group, and the feeding part electrically connected to the first feeding arm and the third feeding arm is arranged on a diagonal line of the metal groove, and is electrically connected to the second feeding arm and the fourth feeding arm The feeding part of is arranged on the other diagonal line of the metal groove. 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 port isolation of the antenna unit is less than -20dB. However, usually the port isolation of the antenna unit is -10dB to meet the actual use requirements, and the smaller the port isolation of the antenna unit, the smaller the mutual influence between the ports of the antenna unit, so the above setting method can improve the antenna unit The isolation of the port can further optimize the polarization performance of the antenna unit.

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

Optionally, in the embodiment of the present invention, the first feeding arm group and the second feeding arm group may be two feeding arm groups that are orthogonally distributed, and are similar to the feeding arms in the first feeding arm group. (The above-mentioned first feeder arm and third feeder arm) The amplitudes of the signal sources electrically connected to the two feeders that are electrically connected are equal, and the phase difference is 180 degrees. The signal sources electrically connected to the two feeders electrically connected to the feeder arms (the second feeder arm and the fourth feeder arm) in the second feeder arm group have the same amplitude and a phase difference of 180 degrees.

In the embodiment of the present invention, since the data transmission rate of the antenna unit adopting the differential orthogonal feeding mode is relatively high, the above-mentioned first feeding arm group and the second feeding arm group can be distributed orthogonally, and the same The signal sources electrically connected to the two feeding parts electrically connected to the feeding arms in the feeding arm group have the same amplitude and a phase difference of 180 degrees, so that the antenna unit feeding method provided by the embodiment of the present invention is differential quadrature The power feeding mode can further increase the data transmission rate of the antenna unit, that is, the communication capacity and communication rate of the antenna unit can be further improved.

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

Wherein, for each of the foregoing M power feeders, the power feeder passing through the first insulator may be electrically connected to one power feeder arm.

Optionally, in the embodiment of the present invention, the feeding arms of the above M feeding arms may be carried on the 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. 7, it is a cross-sectional view of an antenna unit provided by an embodiment of the present invention. In FIG. 7, the antenna unit 20 may further include a first insulator 204 arranged in the metal groove 201. Wherein, M feeding arms 203 may be carried in the first insulator 204, and the first end of the feeding portion 202 may pass through the first insulator 204 and the feeding arm 203 (specifically, it may be the first end of the feeding arm) Electric connection.

In the embodiment of the present invention, the above-mentioned first insulator can not only carry the above-mentioned M feeding arms, but also can isolate the M feeding arms and the metal groove, so that the M feeding arms can be reduced during the operation of the antenna unit. Interference between the arm and the metal groove.

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 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 this embodiment of the present invention, the material of the above-mentioned first insulator may be any possible material such as plastic or foam. 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 an insulating material with relatively small relative permittivity and loss tangent.

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 carrying the foregoing M feed arms, 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, in conjunction with FIG. 2, as shown in FIG. 8, in the case where the foregoing M feed arms 203 are carried on the first insulator 204, the antenna unit 20 may further include a metal groove The second insulator 205 in the 201, the second insulator 205 can be stacked with the first insulator 204, and the M feed arms 203 can be embedded in the second insulator 205.

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, it is shown that the components of the antenna unit are in a separated state. In actual implementation, the first insulator and the second insulator can be stacked in the metal groove, and the M feed arms can be embedded in the second insulator.

Optionally, 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 metal groove. Any possible shape such as rectangle or circle.

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

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

Optionally, in the embodiment of the present invention, the material of the above-mentioned second insulator may be an insulating material with relatively small relative permittivity and loss tangent.

Exemplarily, 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 value may be 0.001.

It should be noted that, in the embodiment of the present invention, on the premise of isolating the foregoing M feed arms from the external environment, the smaller the loss tangent value of the material of the second insulator, the influence of the second insulator on the radiation effect of the antenna unit The smaller. That is to say, the smaller the loss tangent value of the material of the second insulator, the smaller the influence of the second insulator on 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, as shown in FIG. 7, the surface of the second insulator 205 may be flush with the surface where the opening of the metal groove 201 is located.

Of course, in actual implementation, the thickness of the second insulator can also be any other possible thickness, that is, the surface of the second insulator can also protrude from the surface where the metal groove opening is located, or it can be lower than the metal groove opening. On the surface. 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 thickness of the second insulator is different, the performance of the antenna unit may also be different. Therefore, the thickness of the second insulator can be set according to actual use requirements, so that the design of the antenna unit can be more flexible.

Further, when the second insulator is flush with the surface where the opening of the metal groove is located, the outer surface of the antenna unit provided by the embodiment of the present invention can be made relatively flat, thereby making the outer surface of the antenna unit more beautiful.

Optionally, in the embodiment of the present invention, as shown in FIG. 7, the bottom of the metal groove 201 may also be provided with M through holes 206 passing through the bottom of the metal groove 201, and each of the above-mentioned M power feeding parts feeds power. The parts 202 may be respectively disposed in one through hole 206.

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 diagonal of the metal groove. Wherein, the distribution mode of the M through holes in the metal groove can be specifically determined according to the distribution positions of the M power feeding portions 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 third insulator may be provided in each of the above-mentioned M through holes, and the third insulator may wrap the feeder provided in the through hole.

In the embodiment of the present invention, the above-mentioned third 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. 7, a plurality of through holes 206 are provided at the bottom of the metal groove 201, and each through hole 206 is provided with a third insulator 207, and the power feeding portion 202 can pass through the first through hole 206. The three insulators 207 and the first insulator 204 are electrically connected to the feeding arm 203.

It should be noted that the signal source 30 electrically connected to one end of the power feeding portion 202 (specifically, the second end of the power feeding portion) in FIG. 7 may be a millimeter wave signal source in an electronic device.

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

Exemplarily, the material of the aforementioned third 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 third 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, the third insulator, the power feeding part, and the through holes provided in the metal groove can form a coaxial transmission structure with a characteristic impedance of 50 ohms. On the one hand, the diameter of the through hole may be larger than the diameter of the power feeding part. Therefore, when the power feeding part is provided in the through hole, the power feeding part may not be fixed in the through hole. Therefore, by providing the above-mentioned third insulator in the through hole, and the third insulator is arranged to wrap the power feeding part, The power feeder can 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 third 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 shown in FIG. 2 to FIG. 8. 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, the housing of the electronic device may be provided with at least one first groove, and each of the at least one first groove may be provided with at least one first groove provided in the embodiment of the present invention. The antenna unit.

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 an embodiment of the present invention is integrated, so that an antenna array composed of the antenna units provided in the embodiment of the present invention can be formed in an electronic device.

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. 9, 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 also 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 integrated in the electronic device in the embodiment of the present invention (antenna unit formed by metal grooves, M feeders, M feed arms and other components) 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. 9 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 scanning angle of the electromagnetic wave beam generated by the M feed arms and the metal groove in the antenna unit can be increased, thereby increasing the millimeter wave antenna of the electronic device Coverage of communications.

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, the housing of the electronic device can also be used as the radiator of the non-millimeter wave antenna in the electronic device, so that the antennas (millimeter wave antenna and non-millimeter wave antenna) in the electronic device can be integrated into one body, which can greatly 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. 10, 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, M feed arms and M feed parts in the antenna unit, etc. The component can be arranged in the metal groove 201 (in practice, the metal groove is not visible at the angle of the electronic device shown in FIG. 10).

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. 10 is that the metal groove 201 is set 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. 10, 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 direction of the 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.

Optionally, in the embodiment of the present invention, multiple metal grooves may be provided in the housing of the electronic device, and M power feeding arms and M power feeding parts in the embodiment of the present invention are provided in each metal groove. The electronic device can integrate multiple antenna units provided in the embodiments of the present invention, so that these antenna units 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. 11, it is the radiation pattern of the antenna unit provided by the embodiment of the present invention when a signal with a frequency of 28 GHz is radiated; as shown in FIG. 12, 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. 11 and 12 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 can be provided with at least two metal grooves, and each metal groove is provided with the aforementioned M power feed arms and M power feed parts, so that the electronic device includes multiple embodiments of the present invention. The antenna unit provided can make the electronic device include an antenna array composed of the antenna unit, 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. 13, it is a bottom view of a plurality of antenna units provided on a housing provided in an embodiment of the present invention in the positive direction of the Z axis (coordinate system as shown in FIG. 10). Assuming that the metal groove is a rectangular groove, as shown in FIG. 13, the third metal frame 43 is provided with a plurality of antenna elements provided by the embodiment of the present invention (each antenna element is formed by a metal groove on the housing and a metal M power feeding parts at the bottom of the groove, and M power feeding arms and other components arranged in the metal groove are formed). Wherein, M power feeding arms 203 are arranged in the metal groove 201, and the power feeding arms in FIG. 13 are “T”-shaped power feeding arms.

It should be noted that, in the embodiment of the present invention, the foregoing FIG. 13 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 feeding parts arranged at the bottom of the metal groove, and M feeding arms arranged in the metal groove; wherein each of the M feeding parts feeds The electric parts are respectively electrically connected to the first end of a feeding arm and insulated from the metal groove, and the M feeding arms are arranged in the metal groove in a first order, and the M feeding arms Each feed arm is coupled with the metal groove, and M is an integer greater than one. With this solution, since the feeding arm can be coupled with the metal groove (which can be used as the radiator of the antenna unit), when the feeding arm receives an AC signal, the feeding arm can be coupled with the metal groove, so that The metal groove generates induced current, so that both the feeding arm and the metal groove can radiate electromagnetic waves of a certain frequency; and, the current path of the induced current generated by the coupling of the feeding arm and the metal groove can have multiple current paths (for example, from The current path from the feeding arm to the metal groove and then to the feeding arm, the current path formed on the metal groove, etc.), so the frequency of the electromagnetic wave generated by the current on the feeding arm through the metal groove can also be multiple In this way, the antenna unit can cover multiple frequency bands, so that the frequency band covered by the antenna unit can be increased. And since the M feeding arms are arranged in the metal groove in the first order, the distance between the respective feeding arms of the M feeding arms can be made larger, so that the M feeding arms can be reduced. The interference between the arms can improve the isolation of the antenna port, and further improve the performance of 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 (14)

1. An antenna unit, characterized in that, the antenna unit includes: a metal groove, M feed parts arranged at the bottom of the metal groove, and M feed arms arranged in the metal groove;

   Wherein, each of the M feeders is electrically connected to the first end of one feeder arm and insulated from the metal groove, and the M feeder arms are in a first order Surroundingly arranged in the metal groove, and each of the M feeding arms is coupled with the metal groove, and M is an integer greater than 1.
2. The antenna unit according to claim 1, wherein the distance between each of the M feed arms and the inner surface of the metal groove is greater than half of the first distance, The first distance is the distance between the surface where the opening of the metal groove is located and the inner surface of the bottom of the metal groove.
3. The antenna unit according to claim 1, wherein the M feed arms follow the first sequence along the inner side wall of the metal groove to extend from the first end of the feed arm to the feeder The order of the second end of the arm is arranged in the metal groove.
4. The antenna unit according to claim 1, wherein the metal groove is a rectangular groove, and the M feeding arms include a first feeding arm, a second feeding arm, and a third feeding arm. The fourth feeding arm, the first feeding arm, the second feeding arm, the third feeding arm, and the fourth feeding arm are arranged in order along the inner side wall of the metal groove. In the metal groove;

   Wherein, the first feeding arm and the third feeding arm are both parallel to the first inner side wall of the metal groove, and the second feeding arm and the fourth feeding arm are both connected to the metal groove. The second inner side wall is parallel, and the first inner side wall is perpendicular to the second inner side wall.
5. The antenna unit according to claim 4, wherein the M feed arms are located on the same plane.
6. The antenna unit according to any one of claims 1 to 4, wherein the M power feeding portions penetrate the bottom of the metal groove.
7. The antenna unit according to any one of claims 1 to 4, wherein the M feeders are four feeders, and two of the four feeders are located at the On one diagonal of the metal groove, the other two of the four power feeders are located on the other diagonal of the metal groove.
8. 7. The antenna unit of claim 7, wherein the signal sources electrically connected to the two feeders located on the same diagonal have the same amplitude and a phase difference of 180 degrees.
9. The antenna unit according to any one of claims 1 to 4, wherein the antenna unit further comprises a first insulator disposed in the metal groove, and the first insulator carries the M feeds Electric arm

   Wherein, for each of the power feeders, the power feeder passing through the first insulator is electrically connected to one power feeder arm, respectively.
10. The antenna unit according to claim 9, wherein the M feed arms are carried on the first insulator;

    The antenna unit further includes a second insulator arranged in the metal groove, the second insulator and the first insulator are laminated and arranged, and the M feed arms are embedded in the second insulator.
11. The antenna unit according to claim 10, wherein the surface of the second insulator is flush with the surface where the opening of the metal groove is located.
12. An electronic device, characterized in that it comprises at least one antenna unit according to any one of claims 1 to 10.
13. The electronic device according to claim 12, wherein the housing of the electronic device is provided with at least one first groove, and each of the at least one first groove is provided with at least One said antenna unit.
14. 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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