WO2021088712A1

WO2021088712A1 - Antenna radiator, antenna assembly, and electronic device

Info

Publication number: WO2021088712A1
Application number: PCT/CN2020/124806
Authority: WO
Inventors: 彭致勇; 向元彬
Original assignee: RealMe重庆移动通信有限公司
Priority date: 2019-11-05
Filing date: 2020-10-29
Publication date: 2021-05-14
Also published as: CN112768904A; CN112768904B

Abstract

Disclosed are an antenna radiator, an antenna assembly, and an electronic device. The antenna radiator comprises a first radiating part, a second radiating part, and a third radiating part. The second radiating part and the first radiating part are used for radiating radiofrequency signals of a first band, the third radiating part and the first radiating part are used for radiating radiofrequency signals of a second band and of a third band. The antenna radiator provided in the present application implements the transmission of radiofrequency signals of three bands, and, the radiator has a small footprint.

Description

Antenna radiator, antenna assembly and electronic equipment

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, application number 201911072360.1, and the title of the invention "antenna radiator, antenna assembly and electronic equipment" on November 05, 2019, the entire content of which is incorporated into this application by reference in.

Technical field

This application relates to the field of communication technology, and in particular to an antenna radiator, an antenna assembly and an electronic device.

Background technique

With the rapid development of communication technology, the fourth generation of mobile communication technology (The 4th Generation Mobile Communication Technology, 4G) has gradually become difficult to meet the needs of users, especially users' needs for higher network speeds and lower network delays. Following this, the fifth generation of mobile communication technology (The 5th Generation Mobile Communication Technology, 5G) has gradually emerged.

According to the 5G communication protocol standard, the 5G communication frequency band is considered to be regulated and divided, including the N41 (2515-2675MHz) frequency band, the N78 (3400-3600MHZ) frequency band, and the N79 (4800-4900MHz) frequency band. Different frequency bands correspond to different uses and functions. Therefore, how to design an antenna system with multiple bandwidths in a limited space to meet different communication requirements has become an urgent problem to be solved.

Summary of the invention

The embodiments of the present application provide an antenna radiator, an antenna assembly, and an electronic device, which can simultaneously realize radio frequency signal output in three frequency bands.

In the first aspect, the antenna radiator provided by the embodiment of the present application includes:

A first radiating part, the first radiating part includes a first end and a second end that are oppositely arranged;

A second radiating portion, the second radiating portion includes a first radiating section and a second radiating section connected to the first radiating section, the first radiating section is connected to the first end, and the second radiating section The section is bent toward the first radiating part;

The third radiating section, the third radiating section includes a third radiating section and a fourth radiating section connected to the third radiating section, the third radiating section is connected to the second end, and the fourth radiating section The section is bent toward the first radiating portion, and the length of the third radiating portion is greater than the length of the second radiating portion;

Wherein, the first radiating part and the second radiating part are used to radiate radio frequency signals in a first frequency band, and the first radiating part and the third radiating part are used to radiate radio frequency signals in the second frequency band and the third frequency band signal.

In a second aspect, an embodiment of the present application provides an antenna assembly, including:

A first radiator, the first radiator includes the above-mentioned antenna radiator;

A second radiator for radiating radio frequency signals in the first frequency band and the second frequency band;

The spacer is arranged between the first radiator and the second radiator, and is used to improve the isolation between the first radiator and the second radiator.

In a third aspect, an embodiment of the present application provides an electronic device, including:

An antenna assembly, the antenna assembly including the above-mentioned antenna assembly; and

A circuit board, the circuit board is provided with a first grounding terminal, a first feeding terminal and a second grounding terminal, the first grounding terminal is connected to the first grounding point, and the first feeding terminal is connected to the The first feeding point is connected, and the second ground terminal is connected to the second ground point.

Description of the drawings

By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes, and advantages of the present application will become more apparent.

FIG. 1 is a schematic diagram of the first structure of an electronic device provided by an embodiment of the present application.

FIG. 2 is a schematic diagram of a first structure of an antenna radiator provided by an embodiment of the present application.

FIG. 3 is a schematic diagram of a second structure of an antenna radiator provided by an embodiment of the present application.

FIG. 4 is a schematic diagram of a third structure of an antenna radiator provided by an embodiment of the present application.

FIG. 5 is a fourth structural diagram of the antenna radiator provided by an embodiment of the present application.

Fig. 6 is a fifth structural schematic diagram of the antenna radiator provided by an embodiment of the present application.

FIG. 7 is a schematic diagram of a second structure of an electronic device provided by an embodiment of the present application.

FIG. 8 is a current distribution diagram of the radio frequency signal radiating the N78 frequency band of the antenna radiator provided by the embodiment of the present application.

FIG. 9 is a current distribution diagram of an antenna radiator radiating radio frequency signals in the N79 frequency band provided by an embodiment of the present application.

FIG. 10 is a current distribution diagram of an antenna radiator radiating radio frequency signals in the N41 frequency band provided by an embodiment of the present application.

FIG. 11 is a schematic diagram of a first structure of an antenna assembly provided by an embodiment of the present application.

FIG. 12 is a schematic diagram of a second structure of an antenna assembly provided by an embodiment of the present application.

FIG. 13 is a diagram of the transmission efficiency of radio frequency signals radiated by the antenna assembly provided by an embodiment of the present application.

FIG. 14 is an S11 curve diagram of the antenna assembly provided by an embodiment of the present application.

FIG. 15 is a schematic diagram of a third structure of an electronic device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of this application.

The embodiments of the present application provide an antenna radiator, an antenna assembly, and an electronic device. The detailed description will be given below. Wherein, the antenna radiator may be provided in an electronic device. Electronic equipment can be smart phones, tablet computers, etc., but also game equipment, AR (Augmented Reality) equipment, automotive equipment, data storage devices, audio playback devices, video playback devices, notebook computers, desktop computing devices, etc. .

Referring to FIG. 1, FIG. 1 is a schematic diagram of the first structure of an electronic device provided by an embodiment of this application. The electronic device 100 includes a cover plate 10, a display screen 20, a middle frame 30, a circuit board 40, a battery 50, a back cover 60 and an antenna radiator 70.

The display screen 20 can be used to display information such as images and text. The display screen 20 may be a liquid crystal display (Liquid Crystal Display, LCD) or an organic light-emitting diode display (Organic Light-Emitting Diode, OLED).

The cover plate 10 can be installed on the middle frame 30, and the cover plate 10 covers the display screen 20 to protect the display screen 20 from being scratched or damaged by water. The cover plate 10 may be a transparent glass cover plate, so that the user can observe the content displayed on the display screen 20 through the cover plate 10. The cover plate 10 may be a glass cover plate made of sapphire.

The display screen 20 may be installed on the middle frame 30 and connected to the back cover 60 through the middle frame 30 to form the display surface of the electronic device 100. The display screen 20 serves as the front shell of the electronic device 100, and forms the housing of the electronic device 100 together with the back cover 60 for accommodating other electronic devices of the electronic device 100. For example, the housing may be used to accommodate electronic devices such as a processor, a memory, one or more sensors, and a lighting element 70 of the electronic device 100.

The display screen 20 may include a display area and a non-display area. Among them, the display area performs the display function of the display screen 20 and is used to display information such as images and text. No information is displayed in the non-display area. The non-display area can be used to set up electronic devices such as cameras and touch electrodes on the display screen.

The display screen 20 may be a full screen. At this time, the display screen 20 can display information in a full screen, so that the electronic device 100 has a larger screen-to-body ratio. The display screen 20 only includes a display area and does not include a non-display area, or the area of the non-display area is relatively small for the user. At this time, electronic devices such as cameras and proximity sensors in the electronic device 100 can be hidden under the display screen 20, and the fingerprint recognition module of the electronic device 100 can be arranged on the back cover 60 of the electronic device 100.

It should be noted that the structure of the display screen 20 is not limited to this. For example, the display screen 20 may also be a special-shaped screen.

The middle frame 30 may have a thin plate or sheet-like structure, or a hollow frame structure. The middle frame 30 is used to provide support for a plurality of electronic devices in the electronic device 100 so as to install the plurality of electronic devices in the electronic device 100 together. For example, electronic devices such as a camera, a receiver, a circuit board 40, and a battery 50 in the electronic device 100 can all be mounted on the middle frame 30 for fixing.

The circuit board 40 may be installed on the middle frame 30. The circuit board 40 may be the main board of the electronic device 100. Among them, the circuit board 40 can be integrated with one of a microphone, a speaker, a receiver, a headphone interface, a universal serial bus interface (USB interface), a camera assembly, a distance sensor, an ambient light sensor, a gyroscope, and a processor, etc. Two or more.

The circuit board 40 may be provided with a radio frequency circuit, a first ground terminal 41, a feed terminal 42 and a second ground terminal 43. The feeding terminal 42 may be electrically connected to the feeding point of the antenna radiator 70 to feed the radio frequency signal transmitted by the radio frequency circuit to the antenna radiator 70. The first ground terminal 41 and the second ground terminal 43 can realize the grounding of the antenna radiator 70.

The battery 50 may be installed on the middle frame 30. At the same time, the battery 50 is electrically connected to the circuit board 40 so that the battery 50 can supply power to the electronic device 100. The circuit board 40 may be provided with a power management circuit. The power management circuit is used to distribute the voltage provided by the battery 50 to various electronic devices in the electronic device 100. Wherein, the battery 50 may be a rechargeable battery. For example, the battery 50 may be a lithium ion battery.

The back cover 60 is located on the side of the circuit board 40 away from the display screen 20, that is, the back cover 60 is located at the outermost part of the electronic device 100 and is used to form the outer contour of the electronic device 100. The back cover 60 may be integrally formed. During the molding process of the back cover 60, a rear camera hole, a fingerprint recognition module mounting hole, and other structures may be formed on the back cover 60.

The back cover 60 may be made of metal, such as magnesium alloy, stainless steel and other metals. It should be noted that the material of the back cover 60 of the embodiment of the present application is not limited to this, and other methods may also be used. For example, the back cover 60 may be made of plastic material. For another example, the back cover 60 may be made of ceramic material or glass material. For another example, the back cover 60 may include a plastic part and a metal part, and the back cover 60 may be a shell structure in which metal and plastic cooperate with each other. Specifically, the metal part may be formed first, for example, a magnesium alloy substrate is formed by injection molding, and plastic is then injected on the magnesium alloy substrate to form a plastic substrate to form a complete shell structure. The antenna radiator of the electronic device 100 may be attached to the side of the back cover facing the inside of the electronic device.

It is understandable that as the electronic device 100 has more and more functions, more and more devices are installed inside the electronic device 100. When the size of the electronic device 100 remains the same, the installation of additional devices inside the electronic device 100 will cause additional The space of the electronic device 100 is occupied, and the installation space left for the antenna radiator 70 is also getting smaller and smaller. In the related art, multiple antenna radiators 70 are often required to realize the transmission of multi-band radio frequency signals, which undoubtedly makes the installation space of the multiple antenna radiators 70 narrower and affects the radio frequency performance of the antenna radiators 70. By designing the structure of the antenna radiator 70 in the embodiment of the application, it is possible to realize the transmission of radio frequency signals in three different frequency bands through one antenna radiator 70. The antenna radiator 70 occupies a small space, and the radio frequency performance of the antenna radiator 70 is also high. better. The following takes the antenna radiator 70 as an example for detailed description.

Please refer to FIG. 2. FIG. 2 is a schematic diagram of the first structure of the antenna radiator provided by an embodiment of the application. The antenna radiator 70 can be installed in the electronic device 100, and the electronic device 100 can refer to the above-mentioned electronic device 100, which will not be repeated here.

The antenna radiator 70 includes a first radiating portion 71, a second radiating portion 72, and a third radiating portion 73, wherein the second radiating portion 72, the first radiating portion 71, and the third radiating portion 73 are sequentially connected. The length of the third radiating portion 73 is greater than the length of the second radiating portion 72.

The first radiating portion 71 includes a first end 7101 and a second end 7102 that are oppositely disposed, and the second radiating portion 72 includes a third end 7201 and a fourth end 7202, wherein the fourth end 7202 is the free end of the second radiating portion 72, The first end 7101 of the first radiating portion 71 is connected to the third end 7201 of the second radiating portion 72, the free end of the second radiating portion 72 is bent toward the first radiating portion 71, the first radiating portion 71 and the second radiating portion There is a first gap 77 between 72.

The third radiating portion 73 includes a fifth end 7301 and a sixth end 7302, wherein the sixth end 7302 is the free end of the third radiating portion 73, the fifth end 7301 of the third radiating portion 73 and the second end 7301 of the first radiating portion 71 The ends 7102 are connected, the free end of the third radiating portion 73 is bent toward the first radiating portion 71, and there is a second gap 78 between the first radiating portion 71 and the third radiating portion 73.

It should be noted that when the second radiating portion 72 and the third radiating portion 73 are on the same side of the first radiating portion 71, and the second radiating portion 72 and the third radiating portion 73 are bent toward the first radiating portion, the second radiating portion 72 and the third radiating portion 73 are bent toward the first radiating portion. The fourth end 7202 of the second radiating portion 72 and the sixth end 7302 of the third radiating portion 73 will not overlap or be connected to the first radiating portion 71, that is, the free ends of the second radiating portion 72 and the third radiating portion 73 will not be The first radiation part 71 overlaps or is connected.

It is understandable that when the second radiating portion 72 and the third radiating portion 73 are bent on the same side of the first radiating portion 71, the bending direction of the second radiating portion 72 and the third radiating portion 73 can be the same direction, or It can be a relative direction. When the second radiating portion 72 and the third radiating portion 73 are bent in opposite directions, that is, the second radiating portion 72 is bent toward the second end 7102, and the third radiating portion 73 is bent toward the first end 7101, The free end of the second radiating portion 72 and the free end of the third radiating portion 73 will not overlap or be connected, that is, the fourth end 7202 and the sixth end 7302 will not overlap or connect, so that the second radiating portion 72 and the third radiating portion 72 will not overlap or be connected. A third gap 79 is formed between the radiating portions 73, wherein the third gap 79 can improve the isolation between the second radiating portion 72 and the third radiating portion 73, and avoid the radio frequency radiated by the second radiating portion 72 and the third radiating portion 73 Interference occurs between signals.

There are a first ground point 74, a first feed point 75, and a second ground point 76 on the first radiating part 71, wherein the first feed point 75 is arranged between the first ground point 74 and the second ground point 76, The first ground point 74 is arranged at a position close to the first end 7101, and the second ground point 76 is arranged at a position close to the second end 7102, wherein a tuning element can also be arranged at the second ground point 76 to adjust the resonance frequency.

It is understandable that the first ground point 74 may also be provided on the second radiating part 72, the second ground point 76 may be provided on the third radiating part 73, and the first feeding point 75 may be provided on the first radiating part 71. The radiation length of the antenna radiator 70 can be changed by setting different ground point positions, so that the antenna radiator 70 can radiate radio frequency signals of signals of different frequency bands.

In order to describe the shape of the antenna radiator 70 in more detail, please refer to FIG. 3 together. FIG. 3 is a second schematic diagram of the antenna radiator 70 according to an embodiment of the present application.

The second radiating portion 72 includes a first radiating section 721 and a second radiating section 722. One end of the first radiating section 721 is the third end 7201, and the other end of the first radiating section 721 faces the second direction (P2 direction), The second direction may be perpendicular to the first radiating portion 71, the other end of the first radiating section 721 is connected to the second radiating section 722, the other end of the second radiating section 722 is the fourth end 7202, and the second radiating section 722 is connected to the second radiating section 722. A radiating portion 71 is parallel, and the fourth end 7202 of the second radiating section 722 faces the second end 7102 direction.

It can be understood that, in order to reduce the size of the antenna radiator 70 as much as possible, the end of the second radiating section 722 can also be bent toward the first radiating portion 71, that is, toward the first direction (P1 direction). In the case of overlapping or connecting with the first radiating portion 71, the first gap 77 is formed, and the size of the antenna radiator 70 is reduced at the same time.

The arrangement of the first radiating section 721 and the second radiating section 722 on the second radiating part 72 can ensure the length of the antenna radiator 70 and at the same time by bending the design of the third radiating part 73, without affecting the antenna radiation Under the premise of the normal radiation performance of the body 70, the area occupied by the antenna radiator 70 can be reduced, so that the antenna radiator 70 can also be provided in the electronic device 100 with a small volume, which reduces the installation of the antenna radiator 70 inside the electronic device 100. The difficulty.

The third radiating portion 73 includes a third radiating section 731 and a fourth radiating section 732. One end of the third radiating section 731 is the third end 7301, and the other end of the third radiating section 731 faces the second direction (P2 direction), and the third radiating section 731 faces the second direction (P2 direction). The two directions may be perpendicular to the first radiating portion 71, the other end of the third radiating section 731 is connected to the fourth radiating section 732, the other end of the fourth radiating section 732 is the sixth end 7302, and the fourth radiating section 732 is connected to the first radiating section 732. The portions 71 are parallel, and the sixth end 7302 of the fourth radiating section 732 faces the first end 7101 direction.

It is understandable that in order to reduce the size of the antenna radiator 70 as much as possible, the end of the fourth radiating section 732 can also be bent toward the first radiating portion 71, that is, toward the first direction (P1 direction). In the case of overlapping or connecting with the first radiating portion 71, the second gap 78 is formed, and the size of the antenna radiator 70 is reduced at the same time.

It should be noted that when the second radiating section 722 and the fourth radiating section 732 are on the same side of the first radiating portion 71 and facing opposite directions, there is formed between the second radiating section 722 and the fourth radiating section 732 The third gap 79.

The third radiating section 731 and the fourth radiating section 732 are arranged on the third radiating part 73, while ensuring the length of the antenna radiator 70, the third radiating part 73 is designed to be bent without affecting the antenna radiation. Under the premise of the normal radiation performance of the body 70, the area occupied by the antenna radiator 70 can be reduced, so that the antenna radiator 70 can also be provided in the electronic device 100 with a small volume, which reduces the installation of the antenna radiator 70 inside the electronic device 100. The difficulty.

It is understandable that the second radiating portion 72 and the third radiating portion 73 can also be bent in different directions. For example, the free end of the second radiating portion 72 faces the direction of the first end 7101, and the second radiating portion 72 is in the direction of the first end 7101. One side of the radiation portion 71 in the direction P1, the free end of the third radiation portion 73 faces the direction of the second end 7102, and the third radiation portion 73 is on the side of the first radiation portion 71 in the direction P1. The second radiating portion 72 and the third radiating portion 73 are on different sides of the first radiating portion 71, for example, the second radiating portion 72 is on one side of the first radiating portion 71 in the direction P1, and the third radiating portion 73 is on the first radiating portion. One side of the portion 71 in the P2 direction.

Please continue to refer to FIG. 4, which is a third structural schematic diagram of the antenna radiator provided by an embodiment of the present application.

Wherein, the fourth radiating section 732 of the third radiating portion 73 includes a first portion 7321 and a second portion 7322. The width of the first portion 7321 is greater than the width of the second portion 7322. When the antenna radiator 70 radiates radio frequency signals, it can remain unchanged. While the resonance frequency of the existing radio frequency signal can be adjusted, the frequency of the radio frequency signal to be adjusted can be adjusted to the target frequency.

It is understandable that because the width of the first part 7321 is relatively wide, the length of the first part 7321 can also be adjusted without affecting the resonance frequency of the existing radio frequency signal to realize the radiation of other radio frequency signals, such as WiFi signals, GPS signal and so on.

It can be understood that, in the above detailed description of the antenna radiator 70, the antenna radiator 70 can be regarded as composed of two IFA antennas, namely the first IFA antenna composed of the first radiating portion 71 and the second radiating portion 72, and the third The second IFA antenna composed of the radiating part 73 and the first radiating part 71, the two IFA antennas can radiate radio frequency signals of different frequency bands.

Since the physical length of the second radiating part 72 and the physical length of the third radiating part 73 are different, the first IFA antenna and the second IFA antenna can radiate radio frequency signals of different frequencies. For example, the length of the third radiating part 73 is greater than that of the second radiating part 73. When the length of the radiating part 72 is set, the first IFA antenna composed of the first radiating part 71 and the second radiating part 72 can radiate radio frequency signals in the first frequency band, and the second IFA antenna composed of the first radiating part 71 and the third radiating part 73 It can be used to radiate radio frequency signals in the second frequency band and the third frequency band.

Please continue to refer to FIG. 5 for details. FIG. 5 is a fourth structural diagram of the antenna radiator 70 according to an embodiment of the present application.

The antenna radiator 70 further includes a first ground point 74, a first feed point 75 and a second ground point 76.

Wherein, when the first feeding point 75 is connected to power and the first grounding point 74 is grounded, when the first feeding point 75 feeds a single-frequency radio frequency signal, the first end of the second radiating portion 72 and the first radiating portion 71 Part of the radiator from 7101 to the first feeding point 75 radiates radio frequency signals in the first frequency band, where the radio frequency signals in the first frequency band may be radio frequency signals in the N78 frequency band (3400 MHz to 3600 MHz).

Specifically, when the antenna radiator 70 realizes radiation of the radio frequency signal of the first frequency band, the antenna radiator 70 works as the first IFA antenna, that is, the antenna in the area 701 in FIG. 5.

Please continue to refer to FIG. 6, which is a fifth structural schematic diagram of the antenna radiator provided by an embodiment of the present application.

In an embodiment, when the first feeding point 75 is connected to the power and the second grounding point 76 is grounded, a variety of radio frequency signals can be fed through the first feeding point 75, for example, the second frequency band is fed simultaneously. Signals and radio frequency signals in the third frequency band. The radio frequency signals in the second frequency band may be radio frequency signals in the N79 frequency band (4800 MHz to 4900 MHz), and the radio frequency signals in the third frequency band may be radio frequency signals in the N41 frequency band (2515 MHz to 2675 MHz).

It should be noted that because the width of the first portion 7321 of the fourth radiating section 732 is relatively wide, when the third radiating portion 73 and the first radiating portion 71 radiate the radio frequency signal of the second frequency band, the resonance of the second frequency band may not be changed. At the same time, it can radiate the radio frequency signal of the third frequency band. For example, when the third radiation part 73 and the first radiation part 71 radiate the radio frequency signal of the N79 frequency band, in order not to change the resonant frequency of the radio frequency signal of the N79 frequency band, it is not necessary to change The length of the third radiating part 73 changes the width of the first part 7321 of the fourth radiating section 732, so as to realize the radiation of the third radiating part 73 and the first radiating part 71 without changing the resonant frequency of the radio frequency signal of the N79 frequency band. The resonant frequency of the radio frequency signal in the N41 band.

As shown in FIG. 6, part of the radiator from the second end 7102 of the third radiating portion 73 and the first radiating portion 71 to the first feeding point 75 radiates radio frequency signals in the second frequency band and the third frequency band, that is, the area 702 in FIG. The covered radiator can be used to radiate radio frequency signals in the second frequency band and the third frequency band.

Specifically, when the antenna radiator 70 radiates radio frequency signals in the second frequency band and the third frequency band, the part of the antenna radiator 70 used to radiate radio frequency signals is the second IFA antenna, that is, the antenna shown in area 702 in FIG. 5 .

It can be understood that when the first ground point 74 and the second ground point 76 are grounded and the first feed point 75 is connected to power, the first feed point 75 can access radio frequency signals of multiple frequency bands, for example, The radio frequency signals of the first, second, and third frequency bands, namely the radio frequency signals of the N78 frequency band, the N79 frequency band, and the N41 frequency band, are fed through the first feeding point 75 to realize the antenna radiator 70 at the same time. It radiates signals in a variety of frequency bands.

It is understandable that when the antenna radiator 70 needs to add a radio frequency signal of a new frequency band, the length of the third radiating part 73 can be adjusted, or the positions of the first feeding point 75 and the second grounding point 76 can be adjusted. , So that the length of the second IFA antenna is changed, so as to achieve radiation of radio frequency signals in other frequency bands, such as GPS signals, WiFi signals, and so on.

It should be noted that the antenna radiator 70 of the embodiment of the present application can be formed by using a 3D-MID process technology using a three-dimensional laser. For example, the antenna radiator 70 can adopt laser direct molding technology. First, the laser induces the modified material, and then the selective metal plating is directly formed on the substrate medium. The antenna radiator 70 does not need to occupy the internal space of the electronic device 100. Increasing the thickness of the electronic device 100 can realize a thinner and lighter design of the electronic device 100.

It is understandable that the antenna radiator 70 can also be formed on the substrate medium by other processes. For example, the antenna radiator 70 can be formed by laser activation technology, laser induced common materials, and then metal plating is selected to form the antenna radiator. For another example, the antenna radiator 70 may adopt a patch antenna technology, and the antenna radiator 70 can be pasted and fixed inside the electronic device 100.

The antenna radiator 70 may be disposed on the battery cover of the battery 50, the back cover 60 is made of plastic or ceramic material, and the back cover 60 encapsulates the antenna radiator 70 inside the electronic device 100.

Of course, the antenna radiator 70 may also be disposed on other components of the electronic device 100, such as a non-metallic part of the middle frame 30, and the specific position of the antenna radiator 70 is not limited in the embodiment of the present application.

Please refer to FIG. 7, which is a second schematic diagram of the electronic device 100 according to an embodiment of the present application.

The first ground point 74 on the antenna radiator 70 can be connected to the first ground terminal 41 on the circuit board 40 through the first elastic piece 201, and the first feed point 75 can be connected to the first ground terminal 41 on the circuit board 40 through the second elastic piece 202. The feeding terminal 42 is connected, and the second grounding point 76 can be connected to the second grounding terminal 43 on the circuit board 40 through the third elastic piece 203.

Among them, the first elastic piece 201, the second elastic piece 202, and the third elastic piece 203 can be used to control the connection between the circuit board 40 and the antenna radiator 70, and the integrated chip on the circuit board 40 can control the antenna radiator 70 to radiate the first frequency band, For radio frequency signals in the second frequency band and the third frequency band, when other radio frequency signals need to be radiated, the first feed end 42 can input different feed sources to the antenna radiator 70 through the second elastic sheet 202.

In an embodiment, when the antenna radiator 70 radiates radio frequency signals in the first frequency band, the first frequency band signals may be radio frequency signals in the N78 frequency band, and the specific frequency is 3500 MHz. For details, please refer to FIG. 8, which is antenna radiation. The current distribution diagram of the body 70 radiating radio frequency signals in the N78 frequency band. At this time, the first feeding point 75 feeds a 3500 MHz radio frequency signal, and the first ground point 74 is connected to the first ground terminal 41 through the first elastic piece 201 to ground.

It can be seen from FIG. 8 that the current at the first feeding point 75 is the largest, and the current at the fourth end 7202 of the second radiating part 72 is the smallest, and the current at the second IFA antenna is almost zero. It is understood that, at this time, the first IFA antenna radiates radio frequency signals, and radiates radio frequency signals with a frequency of 3500 MHz.

According to the distribution principle that the radio frequency signal is a sine wave signal, the zero point and the extreme point of the sine wave signal differ by a quarter of a period. Therefore, the fourth terminal 7202 to the first feeding point 75 can generate the fourth end of the N78 frequency band radio frequency signal. At this time, the first IFA antenna produces a quarter mode that works in the N78 frequency band.

Please continue to refer to FIG. 9. FIG. 9 is a current distribution diagram of the radio frequency signal radiated by the antenna radiator 70 in the N79 frequency band according to an embodiment of the present application. The first feeding point 75 of the antenna radiator 70 is connected to the first feeding terminal 42 on the circuit board through the second elastic sheet 202, and the circuit board inputs the signal source of the N79 frequency band. Specifically, the input frequency on the circuit board 40 is 4920MHz As a signal source, the second ground point 76 of the antenna radiator 70 is connected to the second ground terminal 43 on the circuit board 40 through the third elastic piece 203.

As shown in FIG. 9, the sixth end 7302 of the third radiating part 73 is the first current minimum point, and the second current minimum point 77 exists on the first radiating part 71. According to the distribution principle that the radio frequency signal is a sine wave signal, The length from the first minimum current point (on the sixth terminal 7302) to the second minimum current point 77 can produce one-half of the wavelength of the N79 frequency band. The current at the first feeding point 75 is the largest, from the first feeding point 75 to the second minimum current point 77 can produce a quarter of the wavelength of the N79 frequency band. Therefore, the length from the sixth end 7302 to the first feeding point produces three quarters of the wavelength of the N79 frequency band. In the second IFA A three-quarter mode working in the N79 frequency band is generated on the antenna to radiate radio frequency signals in the N79 frequency band.

Please continue to refer to FIG. 10, which is a current distribution diagram of the antenna radiator 70 radiating radio frequency signals in the N41 frequency band according to an embodiment of the present application. In an embodiment, the first feeding point 75 of the antenna radiator 70 is connected to the first feeding terminal 42 on the circuit board through the second elastic sheet 202, and the circuit board inputs the signal source of the N41 frequency band. Specifically, the circuit board A signal source with a frequency of 2600 MHz is input to 40, and the second ground point 76 of the antenna radiator 70 is connected to the second ground terminal 43 on the circuit board 40 through the third elastic piece 203.

As shown in FIG. 10, the sixth end 7302 of the third radiating part 73 is the current minimum point, and the first feeding point 75 is the current maximum point. The length from the sixth end 7302 to the first feeding point 75 It can generate a quarter wavelength of the N41 frequency band, and the second IFA antenna can be used to generate a quarter mode of the N41 frequency band to radiate radio frequency signals in the N41 frequency band.

An embodiment of the present application also provides an antenna assembly 200, as shown in FIG. 11, which is a first schematic structural diagram of the antenna assembly 200 provided in an embodiment of the present application.

The antenna assembly 200 includes a circuit board 40, a first radiator 70, a second radiator 80 and a spacer 90, wherein the first radiator 70 is the antenna radiator 70 mentioned above.

Since the first radiator 70 and the second radiator 80 have two antenna branches that are relatively close together, the spacer 90 can be arranged between the first radiator 70 and the second radiator 80 to improve the first radiator. The isolation between 70 and the second radiator 80, the isolator 90 can be a grounded antenna, and the ground point 91 of the isolator 90 is connected to the fifth ground terminal 47 on the circuit board 40, so as to realize the circuit on the circuit board 40. The board grounding point is used to generate the current path of the N78 frequency band radio frequency signal in series.

It can be understood that the two metal branches close to each other of the first radiator 70 and the second radiator 80 are used to radiate radio frequency signals in the N78 frequency band. The difference between the ground point 91 of the ground wire 90 and the fifth ground terminal 47 is adjusted. The size of the series capacitor between the circuit board 40 can be adjusted on the circuit board ground of the circuit board 40 to generate the current path of the N78 frequency radio frequency signal, thereby enhancing the two metal adjacent to each other of the first radiator 70 and the second radiator 80 The isolation between the branches, ideally, the isolation between the two metal branches can be about -9db.

It can be understood that the second radiator 80 includes a second feed point 84, a third ground point 85, and a fourth ground point 86. The circuit board 40 includes a second feed end 44, a third ground end 45, and a fourth ground point. The grounding terminal 46, wherein the second feeding point 84 is connected to the second feeding terminal 44, the third grounding point 85 is connected to the third grounding terminal 85, and the fourth grounding point 86 is connected to the fourth grounding terminal 46.

Please refer to FIG. 12 for details. FIG. 12 is a schematic diagram of the second structure of the antenna assembly 200 according to an embodiment of the present application. The second radiator 80 includes a fourth radiating portion 81, a fifth radiating portion 82, and a sixth radiating portion 83. . The length of the sixth radiating portion 83 is greater than the length of the fifth radiating portion 82.

The fourth radiating part 81 includes a seventh end 8101 and an eighth end 8102 which are arranged oppositely. The second feeding point 84, the third grounding point 85, and the fourth grounding point 86 are all arranged on the fourth radiating part 81. Specifically, The second feeding point 84 is arranged at a position close to the seventh end 8101, the fourth grounding point 86 is arranged at a position near the middle of the fourth radiating part 81, and the third grounding point 85 is arranged at the second feeding point 84 and the fourth Between ground point 86.

The fifth radiating portion 82 includes a ninth end 8201 and a tenth end 8202, wherein the tenth end 8202 is the free end of the fifth radiating portion 82, the ninth end 8201 is connected to the seventh end 8101, and the free end of the fifth radiating portion 82 A part of the fourth radiating portion 81 extends toward the eighth end 8102, and a fourth gap 87 is formed between the fourth radiating portion 81 and the fifth radiating portion 82.

The sixth radiating portion 83 includes an eleventh end 8301 and a twelfth end 8302, wherein the eleventh end is connected to the eighth end 8102, the twelfth end 8302 is the free end of the sixth radiating portion 83, and the sixth radiating portion 83 A part of the free end of the radiator extends toward the seventh end 8101 of the fourth radiating portion 81, and a fifth gap 88 is formed between the sixth radiating portion 83 and the fourth radiating portion 81.

The free end corresponding to the fifth radiating portion 82 and the free end corresponding to the sixth radiating portion 83 are not connected or overlapping, and a second radiating portion 82 is formed between the fifth radiating portion 82 and the sixth radiating portion 83. Six gap 89.

It should be noted that the fourth radiating part 81 and the fifth radiating part 82 form a third IFA antenna, which can be used to radiate radio frequency signals in the second frequency band, and the sixth radiating part 83 and the fourth radiating part 81 form a fourth IFA antenna. It can be used to radiate radio frequency signals in the first frequency band.

In an embodiment, when the second feeding point 84 is connected to the power, the third grounding point 85 and the fourth grounding point 86 are both grounded, the circuit board 40 can feed the signal sources of the N78 frequency band and the N79 frequency band. The fourth radiating part 81 and the fifth radiating part 82 can radiate radio frequency signals in the N79 frequency band, and the sixth radiating part 83 and the fourth radiating part 81 can radiate radio frequency signals in the N78 frequency band, of which the fifth radiating part 82 and part of the fourth radiating part 81 can generate a quarter of the N79 frequency band, and the sixth radiating part 83 and part of the fourth radiating part 81 can generate a quarter of the N78 frequency band.

In an embodiment, the length of the fifth radiating part 82 can be adjusted. Without affecting the radiation of the N79 frequency band, radio frequency signals in other frequency bands, such as WiFi signals, GPS signals, etc., can be radiated.

In an embodiment, the positions of the second feeding point 84, the third grounding point 85, and the fourth grounding point 86 can be adjusted, so as to adjust the length of the second antenna radiator 80 so as to radiate radio frequencies in other frequency bands. Signals, wherein the second feeding point 84 can be fed into multiple signal sources to achieve simultaneous radiation of multi-frequency signals.

It should be noted that the second antenna radiator 80 of the embodiment of the present application can be formed by using a 3D-MID process technology using a three-dimensional laser. For example, the second antenna radiator 80 can use laser direct molding technology. First, the laser induces the modified material, and then the selective metal plating is directly formed on the base medium. The second antenna radiator 80 can not occupy the internal space of the electronic device 100. Therefore, the thickness of the electronic device 100 will not be increased, and the thinner and lighter design of the electronic device 100 can be realized.

It is understandable that the second antenna radiator 80 can also be formed on the base medium by other processes. For example, the second antenna radiator 80 can be laser activation technology, laser induced common materials, and then metal plating is selected to form the antenna radiator. . For another example, the second antenna radiator 80 may adopt a patch antenna technology to paste and fix the second antenna radiator 80 inside the electronic device 100.

The second antenna radiator 80 may be disposed on the battery cover of the battery 50, the back cover 60 is made of plastic or ceramic material, and the back cover 60 encapsulates the second antenna radiator 80 inside the electronic device 100.

Of course, the second antenna radiator 80 may also be disposed on other components of the electronic device 100, such as a non-metallic part of the middle frame 30. The embodiment of the present application does not limit the specific position of the second antenna radiator 80.

In one embodiment, the front shell of the electronic device 100 is made of metal, and the front shell needs to have a clearance of 2 mm from the outer edge of the second antenna radiator 80, and also under the elastic sheet connecting the circuit board 40 and the second antenna radiator 80 A clearance of 2mm is required to ensure the antenna performance of the second radiator.

Please continue to refer to FIG. 11, in an embodiment, all the ground terminals on the circuit board 40 are respectively connected to the ground points on the first antenna radiator 70 and the second antenna radiator 80, and all the feed terminals are respectively connected to the ground points on the first antenna radiator 70 and the second antenna radiator 80. When connected with the feeding points on the first antenna radiator 70 and the second antenna radiator 80, the first radiator 70 can be used to simultaneously radiate radio frequency signals in the N78, N79, and N41 bands, and the second radiator 80 can be used to simultaneously radiate radio frequency signals in the N78 frequency band and the N79 frequency band, so as to form a 2*2MIMO 5G antenna in the antenna assembly.

It should be noted that the embodiments of the present application only exemplify radio frequency signals in the frequency band that can be radiated, and of course also include radio frequency signals in other frequency bands, which should not be regarded as a limitation on the present application.

Please refer to FIG. 13, which is a diagram of the transmission efficiency of the radio frequency signal radiated by the antenna assembly. The curve A is the passive efficiency curve of the second radiator 80, and the curve B is the passive efficiency curve of the first radiator 70. When the first radiator 70 can be used to simultaneously radiate radio frequency signals in the N78, N79, and N41 bands, and the second radiator 80 can be used to simultaneously radiate radio frequency signals in the N78 and N79 bands, it can be seen from Figure 13 The passive efficiency of the first antenna radiator 70 and the second antenna radiator 80 respectively when radiating the target frequency band is relatively high.

Please continue to refer to FIG. 14, which is an S11 curve diagram of the antenna assembly 200 according to an embodiment of the present application. The curve A represents the S11 curve of the second radiator 80, the curve B represents the S11 curve of the first antenna radiator 70, and the curve C represents the curve of the coupling part of the first antenna radiator 70 and the second antenna radiator 80. In the first frequency band, the second frequency band, and the third frequency band, the return loss of the antenna assembly 200 is small, and meets the conditions for radiating radio frequency signals in the first, second, and third frequency bands, and the antenna assembly 200 can radiate the first frequency band. Radio frequency signals in the first frequency band, the second frequency band, and the third frequency band.

In the embodiment of the present application, the antenna assembly 200 can be affixed to different positions of the back cover, and the antenna assembly 200 can form a multiple-input multiple-output (MIMO) antenna combination with a high frequency combination in a cellular frequency band, and a cellular MIMO antenna combination of high and low frequency combination in the frequency band and MIMO antenna combination of wifi frequency band.

For example, please refer to FIG. 15, which is a third schematic structural diagram of the electronic device 100 provided by an embodiment of the present application.

As shown in FIG. 15, two sets of antenna assemblies 200 can be provided on the back of the electronic device 100, including two first radiators 70, two second antenna radiators 80, and two spacers 90. In this way, a 4*4 MIMO 5G antenna system covering the N78 and N79 frequency bands and a 2*2 MIMO 5G antenna system covering the N41 frequency band are realized.

The antenna assemblies 200 are respectively arranged on both sides of the electronic device 100. One antenna assembly 200 is located at the upper part of one side, and the other antenna assembly is located at the lower part of the other. When the user holds the electronic device 100, the palm of the user will block one of the antenna assemblies 200, but The other antenna assembly 200 can still radiate radio frequency signals, so that the electronic device has better antenna performance.

It should be noted that the antenna assembly 200 can radiate radio frequency signals of different frequency bands. For example, one antenna assembly 200 can radiate radio frequency signals of N41, N78, and N79 frequency bands, and another antenna assembly 200 can radiate GPS frequency bands and wifi 2.4g frequency bands. And the radio frequency signal of the wifi5g frequency band, and further, the radio frequency signal of more frequency bands can be covered by multiple antenna radiators 70.

In an embodiment, multiple antenna components 200 may be provided in the electronic device 100, and multiple antenna radiators 70 may be provided inside the electronic device 100. The antenna components 200 and antenna radiators 70 provided in this application are just examples. It should not be regarded as a restriction on this application.

In the description of this application, it should be understood that terms such as "first" and "second" are only used to distinguish similar objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technology The number of features.

The antenna radiator, antenna assembly, and electronic equipment provided by the embodiments of the present application are described in detail above. Specific examples are used in this article to illustrate the principles and implementations of the present application. The description of the above embodiments is only for To help understand the methods and core ideas of this application; at the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation and the scope of application. In summary, the content of this specification is not It should be understood as a limitation of this application.

Claims

An antenna radiator, wherein the antenna radiator includes:

A first radiating part, the first radiating part includes a first end and a second end that are oppositely arranged;

A second radiating portion, the second radiating portion includes a first radiating section and a second radiating section connected to the first radiating section, the first radiating section is connected to the first end, and the second radiating section The section is bent toward the first radiating part;

The third radiating section, the third radiating section includes a third radiating section and a fourth radiating section connected to the third radiating section, the third radiating section is connected to the second end, and the fourth radiating section The section is bent toward the first radiating portion, and the length of the third radiating portion is greater than the length of the second radiating portion;

Wherein, the first radiating part and the second radiating part are used to radiate radio frequency signals in a first frequency band, and the first radiating part and the third radiating part are used to radiate radio frequency signals in the second frequency band and the third frequency band signal.
The antenna radiator according to claim 1, wherein the fourth radiating section comprises:

A first part and a second part connected to the first part, the width of the first part is greater than the width of the second part, and the first part is connected to the third radiating section;

The first part is used for making the first radiating part and the third radiating part radiate the radio frequency signal of the third frequency band without changing the resonant frequency of the second frequency band.
The antenna radiator according to claim 1, wherein the antenna radiator further comprises:

The first ground point is set on the first radiating part or the second radiating part;

The second ground point is set on the first radiating part or the third radiating part;

The first feeding point is arranged on the first radiating part, wherein the first grounding point and the second grounding point are located on different sides of the first feeding point.
The antenna radiator according to any one of claims 1 to 3, wherein a first gap is formed between the first radiating part and the second radiating part;

A second gap is formed between the first radiation part and the third radiation part.
The antenna radiator according to claim 4, wherein the second radiating section and the fourth radiating section are bent toward the same side of the first radiating section, and the free end of the second radiating section is The third gap is formed between the free ends of the third radiating part.
The antenna radiator according to claim 5, wherein the radio frequency signal in the first frequency band comprises a radio frequency signal in the N78 frequency band of 5G signals, and the radio frequency signal in the second frequency band comprises a radio frequency signal in the N79 frequency band of 5G signals, so The radio frequency signal in the third frequency band includes the radio frequency signal in the N41 frequency band of the 5G signal.
An antenna assembly, wherein the antenna assembly includes:

A first radiator, the first radiator comprising the antenna radiator according to any one of claims 1 to 6;

A second radiator for radiating radio frequency signals in the first frequency band and the second frequency band;

The spacer is arranged between the first radiator and the second radiator, and is used to improve the isolation between the first radiator and the second radiator.
The antenna assembly according to claim 7, wherein the second radiator comprises:

A fourth radiating part, the fourth radiating part includes a third end and a fourth end that are oppositely arranged;

A fifth radiating section, the fifth radiating section includes a fifth radiating section and a sixth radiating section connected to the fifth radiating section, the fifth radiating section is connected to the third end, and the sixth radiating section The section is bent toward the first radiating part;

A sixth radiating portion, the sixth radiating portion includes a seventh radiating section and an eighth radiating section connected to the seventh radiating section, the seventh radiating section is connected to the fourth end, and the eighth radiating section The section is bent toward the fourth radiating portion, and the length of the sixth radiating portion is greater than the length of the fifth radiating portion;

Wherein, the fourth radiating part and the fifth radiating part are used for radiating the radio frequency signal of the first frequency band, and the fourth radiating part and the sixth radiating part are used for radiating the radio frequency signal of the second frequency band.
The antenna assembly according to claim 8, wherein the fourth radiating part includes a second feeding point, a third grounding point, and a fourth grounding point, and the third grounding point is arranged at the second feeding point And the fourth grounding point.
The antenna assembly according to claim 8, wherein a fourth gap is formed between the fourth radiating part and the fifth radiating part, and a fourth gap is formed between the fourth radiating part and the sixth radiating part. A fifth gap, a sixth gap is formed between the fifth radiating portion and the sixth radiating portion.
8. The antenna assembly according to claim 8, wherein the second radiating part of the first radiator is adjacent to the spacer, and the sixth radiating part of the second radiator is adjacent to the spacer.
The antenna assembly according to claim 11, wherein the isolation member comprises a grounded antenna, and a corresponding ground point is provided on the isolation member.
An electronic device, which includes:

An antenna assembly, the antenna assembly comprising the antenna assembly according to any one of claims 7 to 12; and

A circuit board, the circuit board is provided with a first grounding terminal, a first feeding terminal and a second grounding terminal, the first grounding terminal is connected to the first grounding point, and the first feeding terminal is connected to the first feeding terminal. The electrical point is connected, and the second ground terminal is connected to the second ground point.
The electronic device according to claim 13, further comprising:

A first elastic piece, the first ground terminal is connected to the first ground point through the first elastic piece;

A second elastic piece, the first feeding end is connected to the first feeding point through the second elastic piece; and

The third elastic piece, the second ground terminal is connected to the second ground point through the third elastic piece.
The electronic device according to claim 14, further comprising:

The tuning element is arranged between the second ground terminal and the second ground point, and the tuning element is used to adjust the resonance frequency of the first radiator.
The electronic device according to claim 15, wherein:

When the first feeding point simultaneously feeds the signal sources of the first frequency band, the second frequency band, and the third frequency band, the first radiating part and the third radiating part are used to radiate the second frequency band And the radio frequency signal of the third frequency band, the first radiation part and the second radiation part are used to radiate the radio frequency signal of the first frequency band.
The electronic device according to claim 13, wherein the circuit board is further provided with a second power feeding terminal, a third ground terminal, a fourth ground terminal and a fifth ground terminal, the second power feeding terminal and the The second feed point is connected, the third ground terminal is connected to the third ground point, the fourth ground terminal is connected to the fourth ground point, and the fifth ground terminal corresponds to the spacer The ground point is connected.
The electronic device according to claim 17, further comprising:

A capacitor, the capacitor is arranged between the fifth ground terminal and the ground point corresponding to the spacer, and the capacitor is used to change the path of the current used to generate the first frequency band radio frequency signal on the circuit board ground.
The electronic device according to claim 18, further comprising:

A back cover, the back cover includes a non-metallic material, and the antenna assembly is attached to a side of the back cover facing the inside of the electronic device.
The electronic device according to claim 19, wherein the antenna assembly is attached to different positions of the back cover to form a multiple input multiple output antenna.