CN112768904B

CN112768904B - Antenna radiator, antenna assembly and electronic equipment

Info

Publication number: CN112768904B
Application number: CN201911072360.1A
Authority: CN
Inventors: 彭致勇; 向元彬
Original assignee: Realme Chongqing Mobile Communications Co Ltd
Current assignee: Realme Chongqing Mobile Communications Co Ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2022-08-05
Anticipated expiration: 2039-11-05
Also published as: WO2021088712A1; CN112768904A

Abstract

The embodiment of the application discloses antenna radiator, antenna module and electronic equipment, wherein antenna radiator includes first radiation portion, second radiation portion and third radiation portion, the first radiation section of second radiation portion and the first end of first radiation portion are connected, the second radiation section of second radiation portion is towards first radiation portion bending, the third radiation section of third radiation portion and the second end of first radiation portion are connected, the fourth section of third radiation portion is towards first radiation portion bending, the length of third radiation portion is greater than the length of second radiation portion. The second radiation part and the first radiation part are used for radiating radio-frequency signals of a first frequency band, and the third radiation part and the first radiation part are used for radiating radio-frequency signals of a second frequency band and a third frequency band. The antenna radiator simplifies the design of the antenna, can simultaneously realize the transmission of radio frequency signals of three frequency bands, is small in size, and saves the internal space of the electronic equipment.

Description

Antenna radiator, antenna assembly and electronic equipment

Technical Field

The application relates to the technical field of communication, in particular to an antenna radiator, an antenna assembly and electronic equipment.

Background

With The rapid development of Communication Technology, The 4th Generation Mobile Communication Technology (4G) has gradually become difficult to meet The user's requirements, especially The user's requirements for higher network speed and lower network delay. With this, The fifth Generation Mobile Communication Technology (5G) is gradually emerging.

According to the 5G communication protocol standard, the 5G communication band is considered to be defined and divided, including N41(2515 + 2675MHz) band, N78(3400 + 3600MHz) band and N79(4800 + 4900MHz) band. Different frequency bands correspond to different purposes and functions, and therefore, how to design an antenna system with multiple broadband to meet different communication requirements in a limited space becomes a problem to be solved urgently at present.

Disclosure of Invention

The embodiment of the application provides an antenna radiator, an antenna assembly and electronic equipment, which can simultaneously realize radio frequency signal output of three frequency bands.

In a first aspect, an antenna radiator provided in an embodiment of the present application includes:

the first radiation part comprises a first end and a second end which are oppositely arranged;

the second radiation part comprises a first radiation section and a second radiation section connected with the first radiation section, the first radiation section is connected with the first end, and the second radiation section is bent towards the first radiation part;

the third radiation part comprises a third radiation section and a fourth radiation section connected with the third radiation section, the third radiation section is connected with the second end, the fourth radiation section is bent towards the first radiation part, and the length of the third radiation part is greater than that of the second radiation part;

the first radiation part and the second radiation part are used for radiating radio-frequency signals of a first frequency band, and the first radiation part and the third radiation part are used for radiating radio-frequency signals of a second frequency band and a third frequency band.

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

a first radiator, wherein the first radiator comprises the antenna radiator;

the second radiator is used for radiating the radio frequency signals of the first frequency band and the second frequency band;

and the separator is arranged between the first radiator and the second radiator and used for improving 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 comprising the above-described antenna assembly; and

the circuit board is provided with a first grounding end, a first feed end and a second grounding end, the first grounding end is connected with the first grounding point, the first feed end is connected with the first feed point, and the second grounding end is connected with the second grounding point.

The antenna radiator, antenna module and electronic equipment that this application embodiment provided, wherein the antenna radiator includes first radiation portion, second radiation portion and third radiation portion, first radiation portion includes relative first end and the second end that sets up, the first end of the first radiation section of second radiation portion and first end connection of first radiation portion, the second radiation section of second radiation portion is buckled towards first radiation portion, the third radiation section of third radiation portion and the second end connection of first radiation portion, the fourth section of third radiation portion is buckled towards first radiation portion, the length of third radiation portion is greater than the length of second radiation portion. The second radiation part and the first radiation part are used for radiating radio-frequency signals of a first frequency band, and the third radiation part and the first radiation part are used for radiating radio-frequency signals of a second frequency band and a third frequency band. The antenna radiator simplifies the antenna design, can simultaneously realize the transmission of radio frequency signals of three frequency bands, is small in size, and saves the internal space of electronic equipment.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a first structural schematic diagram of an electronic device provided in an embodiment of the present application.

Fig. 2 is a schematic view of a first structure of an antenna radiator according to an embodiment of the present application.

Fig. 3 is a schematic view of a second structure of an antenna radiator according to an embodiment of the present application.

Fig. 4 is a schematic diagram of a third structure of an antenna radiator according to an embodiment of the present application.

Fig. 5 is a schematic diagram of a fourth structure of an antenna radiator according to an embodiment of the present application.

Fig. 6 is a fifth structural diagram of an antenna radiator according to an embodiment of the present application.

Fig. 7 is a second structural schematic diagram of an electronic device provided in the embodiment of the present application.

Fig. 8 is a current distribution diagram of an antenna radiator according to an embodiment of the present application for radiating a radio frequency signal in a N78 frequency band.

Fig. 9 is another current distribution diagram of the antenna radiator according to the embodiment of the present application for radiating a radio frequency signal in the N78 frequency band.

Fig. 10 is a current distribution diagram of an antenna radiator according to an embodiment of the present application for radiating a radio frequency signal in the N79 frequency band.

Fig. 11 is another current distribution diagram of the antenna radiator according to the embodiment of the present application for radiating a radio frequency signal in the N79 frequency band.

Fig. 12 is a current distribution diagram of an antenna radiator according to an embodiment of the present application for radiating a radio frequency signal in the N41 frequency band.

Fig. 13 is another current distribution diagram of the antenna radiator according to the embodiment of the present application for radiating a radio frequency signal in the N41 frequency band.

Fig. 14 is a first structural schematic diagram of an antenna assembly provided by an embodiment of the present application.

Fig. 15 is a second structural schematic diagram of an antenna assembly provided by an embodiment of the present application.

Fig. 16 is a transmission efficiency graph of the antenna assembly radiating radio frequency signals according to an embodiment of the present application.

Fig. 17 is a graph of S11 for an antenna assembly provided by embodiments of the present application.

Fig. 18 is a third structural schematic diagram of an electronic device provided in the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides an antenna radiator, an antenna assembly and electronic equipment. The details will be described below separately. Wherein the antenna radiator may be provided in an electronic device. The electronic device may be a smart phone, a tablet computer, or other devices, and may also be a game device, an AR (Augmented Reality) device, an automobile device, a data storage device, an audio playing device, a video playing device, a notebook computer, a desktop computing device, or other devices.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. 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 rear cover 60, and an antenna radiator 70.

The display screen 20 may be used to display information such as images, text, and the like. The Display 20 may be a Liquid Crystal Display (LCD) or an Organic Light-Emitting Diode (OLED) Display.

The cover plate 10 may be mounted 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 10 may be a clear glass cover so that a user may view the contents displayed by the display screen 20 through the cover 10. The cover plate 10 may be a glass cover plate of sapphire material.

The display screen 20 may be mounted on the middle frame 30 and connected to the rear cover 60 through the middle frame 30 to form a display surface of the electronic device 100. The display 20 serves as a front case of the electronic apparatus 100, and forms a housing of the electronic apparatus 100 together with the rear cover 60 for accommodating other electronic components of the electronic apparatus 100. For example, the housing may be used to house the processor, memory, one or more sensors, lighting element 70, etc. electronics of the electronic device 100.

The display screen 20 may include a display area as well as a non-display area. Wherein the display area performs the display function of the display screen 20 for displaying information such as images, text, etc. The non-display area does not display information. The non-display area can be used for arranging electronic devices such as a camera and a display screen touch electrode.

The display screen 20 may be a full-face screen. At this time, the display screen 20 may display information in a full screen, so that the electronic apparatus 100 has a large screen occupation ratio. The display screen 20 includes only a display region and does not include a non-display region, or the non-display region has a small area for a user. At this time, electronic devices such as a camera and a proximity sensor in the electronic apparatus 100 may be hidden under the display screen 20, and the fingerprint recognition module of the electronic apparatus 100 may be disposed on the rear cover 60 of the electronic apparatus 100.

The structure of the display screen 20 is not limited to this. For example, the display screen 20 may also be a shaped screen.

The middle frame 30 may have a thin plate-like or sheet-like structure, or may have a hollow frame structure. The middle frame 30 is used to provide support for the plurality of electronic devices in the electronic apparatus 100 to mount the plurality of electronic devices in the electronic apparatus 100 together. For example, the camera, the receiver, the circuit board 40, the battery 50, and other electronic components in the electronic apparatus 100 may be mounted on the middle frame 30 to be fixed.

The circuit board 40 may be mounted on the middle frame 30. The circuit board 40 may be a motherboard of the electronic device 100. One, two or more electronic devices such as a microphone, a speaker, a receiver, an earphone interface, a universal serial bus interface (USB interface), a camera assembly, a distance sensor, an ambient light sensor, a gyroscope, and a processor may be integrated on the circuit board 40.

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

second grounds

41 and 43 may realize the grounding of the antenna radiator 70.

The battery 50 may be mounted on the middle frame 30. Meanwhile, the battery 50 is electrically connected to the circuit board 40 to enable the battery 50 to power the electronic device 100. The circuit board 40 may have a power management circuit disposed thereon. The power management circuit is used to distribute the voltage provided by the battery 50 to the various electronic devices in the electronic apparatus 100. The battery 50 may be a rechargeable battery, among others. For example, the battery 50 may be a lithium ion battery.

The rear cover 60 is located on a side of the circuit board 40 away from the display screen 20, that is, the rear cover 60 is located at an outermost portion of the electronic device 100 and is used to form an outer contour of the electronic device 100. The rear cover 60 may be integrally formed. In the forming process of the rear cover 60, structures such as a rear camera hole and a fingerprint identification module mounting hole can be formed on the rear cover 60.

The rear cover 60 may be made of metal, such as magnesium alloy, stainless steel, etc. Note that the material of the rear cover 60 according to the embodiment of the present application is not limited to this, and other methods may be employed. For example, the rear cover 60 may be made of plastic. For another example, the rear cover 60 may be made of ceramic or glass. For another example, the rear cover 60 may include a plastic part and a metal part, and the rear cover 60 may be a housing structure in which the metal and the plastic are matched with each other. Specifically, the metal part may be formed first, for example, a magnesium alloy substrate is formed by injection molding, and then plastic is injected on the magnesium alloy substrate to form a plastic substrate, so as to form a complete housing structure.

It can be understood that, as the electronic device 100 has more functions, more devices are mounted inside the electronic device 100, and the size of the electronic device 100 is not changed, the additional devices mounted inside the electronic device 100 occupy additional space of the electronic device 100, and the mountable space left for the antenna radiator 70 is also smaller. In the related art, a plurality of antenna radiators 70 are often required to realize transmission of multi-band radio frequency signals, which undoubtedly makes the installation space of the plurality of antenna radiators 70 narrower, and affects the radio frequency performance of the antenna radiators 70. In the embodiment of the present application, by designing the structure of the antenna radiator 70, transmission of radio frequency signals in three different frequency bands can be realized through one antenna radiator 70, the space occupied by the antenna radiator 70 is small, and the radio frequency performance of the antenna radiator 70 is also better. The antenna radiator 70 will be described in detail below as an example.

Referring to fig. 2, fig. 2 is a schematic view illustrating a first structure of an antenna radiator according to an embodiment of the present disclosure. The antenna radiator 70 may be installed in the electronic device 100, and the electronic device 100 may refer to the electronic device 100, which is not described herein.

The antenna radiator 70 includes a first radiation portion 71, a second radiation portion 72, and a third radiation portion 73, wherein the second radiation portion 71, the first radiation portion 72, and the third radiation portion 73 are sequentially connected.

The first radiation part 71 includes a first end 7101 and a second end 7102 which are oppositely arranged, the second radiation part 72 includes a third end 7201 and a fourth end 7202, wherein the fourth end 7202 is a free end of the second radiation part 72, the first end 7101 of the first radiation part 71 is connected with the third end 7201 of the second radiation part 72, the free end of the second radiation part 72 is bent towards the first radiation part 71, and a first gap 77 exists between the first radiation part 71 and the second radiation part 72.

The third radiation portion 73 includes a fifth end 7301 and a sixth end 7302, where the sixth end 7302 is a free end of the third radiation portion 73, the fifth end 7301 of the third radiation portion 73 is connected to the second end 7102 of the first radiation portion 71, the free end of the third radiation portion 73 is bent toward the first radiation portion 71, and a second gap 78 exists between the first radiation portion 71 and the third radiation portion 73.

It should be noted that, when the second radiation portion 72 and the third radiation portion 73 are on the same side of the first radiation portion 71 and the second radiation portion 72 and the third radiation portion 73 are bent toward the first radiation portion, the fourth end 7202 of the second radiation portion 72 and the sixth end 7302 of the third radiation portion 73 do not overlap or connect with the first radiation portion 71, that is, the free ends of the second radiation portion 72 and the third radiation portion 73 do not overlap or connect with the first radiation portion 71.

It is understood that when the second radiation portion 72 and the third radiation portion 73 are bent at the same side of the first radiation portion 71, the bending directions of the second radiation portion 72 and the third radiation portion 73 may be the same direction or opposite directions. When the second radiation part 72 and the third radiation part 73 are bent toward opposite directions, that is, the second radiation part 72 is bent toward the second end 7102, and the third radiation part 73 is bent toward the first end 7101, the free end of the second radiation part 72 and the free end of the third radiation part 73 do not overlap or are connected, that is, the fourth end 7202 and the sixth end 7302 do not overlap or are connected, so that a third gap 79 is formed between the second radiation part 72 and the third radiation part 73, wherein the third gap 79 can improve the isolation between the second radiation part 72 and the third radiation part 73, and avoid interference between radio frequency signals radiated by the second radiation part 72 and the third radiation part 73.

On the first radiating portion 71 there is a first grounding point 74, a first feeding point 75 and a second grounding point 76, wherein the first feeding point 75 is arranged between the first grounding point 74 and the second grounding point 76, the first grounding point 74 is arranged at a position close to the first end 7101, the second grounding point 76 is arranged at a position close to the second end 7102, wherein a tuning element may also be arranged at the second grounding point 76 to adjust the resonance frequency.

It is understood that the first grounding point 74 may also be disposed on the second radiating portion 72, the second grounding point 76 may be disposed on the third radiating portion 73, the first feeding point 75 is disposed on the first radiating portion 71, and the radiation length of the antenna radiator 70 is changed by disposing different grounding point positions, so that the antenna radiator 70 can radiate radio frequency signals of different frequency bands.

For describing the shape of the antenna radiator 70 in more detail, please refer to fig. 3 together, and fig. 3 is a schematic diagram of a second structure of the antenna radiator 70 according to an embodiment of the present application.

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

It is understood that, in order to reduce the size of the antenna radiator 70 as much as possible, the end of the second radiation segment 722 may be bent toward the first radiation portion 71, i.e., bent toward the first direction (P1 direction), to form the first gap 77 without overlapping or connecting with the first radiation portion 71, while reducing the size of the antenna radiator 70.

By arranging the first radiation section 721 and the second radiation section 722 on the second radiation part 72, the length of the antenna radiator 70 can be ensured, and the third radiation part 73 is designed to be bent, so that the area occupied by the antenna radiator 70 can be reduced on the premise that the normal radiation performance of the antenna radiator 70 is not affected, the antenna radiator 70 can be arranged in the electronic device 100 with a small size, and the difficulty in arranging the antenna radiator 70 in the electronic device 100 is reduced.

The third radiation part 73 includes a third radiation segment 731 and a fourth radiation segment 732, one end of the third radiation segment 731 is a third end 7301, the other end of the third radiation segment 731 faces a second direction (P2 direction), wherein the second direction may be perpendicular to the first radiation part 71, the other end of the third radiation segment 731 is connected to the fourth radiation segment 732, the other end of the fourth radiation segment 732 is a sixth end 7302, the fourth radiation segment 732 is parallel to the first radiation part 71, and the sixth end 7302 of the fourth radiation segment 732 faces the first end 7101 direction.

It is understood that, in order to reduce the size of the antenna radiator 70 as much as possible, the end of the fourth radiation segment 732 may be bent toward the first radiation portion 71, i.e., bent toward the first direction (P1 direction), so that the second gap 78 is formed without overlapping or connecting with the first radiation portion 71, while reducing the size of the antenna radiator 70.

Note that, when the second radiation section 722 and the fourth radiation section 732 are on the same side of the first radiation portion 71 and face in opposite directions, a third gap 79 is formed between the second radiation section 722 and the fourth radiation section 732.

By arranging the third radiation section 731 and the fourth radiation section 732 on the third radiation part 73, the length of the antenna radiator 70 can be ensured, and by bending the third radiation part 73, the area occupied by the antenna radiator 70 can be reduced on the premise of not affecting the normal radiation performance of the antenna radiator 70, so that the antenna radiator 70 can be arranged in the electronic device 100 with a small size, and the difficulty of arranging the antenna radiator 70 in the electronic device 100 is reduced.

It is understood that the second radiation portion 72 and the third radiation portion 73 may also be bent toward different directions, for example, the free end of the second radiation portion 72 is toward the first end 7101, the second radiation portion 72 is at one side of the first radiation portion 71 in the P1 direction, the free end of the third radiation portion 73 is toward the second end 7102 direction, and the third radiation portion 73 is at one side of the first radiation portion 71 in the P1 direction. The second radiation part 72 and the third radiation part 73 are on different sides of the first radiation part 71, for example, the second radiation part 72 is on one side of the first radiation part 71 in the P1 direction, and the third radiation part 73 is on one side of the first radiation part 71 in the P2 direction.

Referring to fig. 4, fig. 4 is a schematic view of a third structure of an antenna radiator according to an embodiment of the present application.

The fourth radiation segment 732 of the third radiation part 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, and when the antenna radiator 70 radiates the radio frequency signal, the frequency of the radio frequency signal to be adjusted can be adjusted to the target frequency without changing the resonant frequency of the existing radio frequency signal.

It can be appreciated that because the width of the first portion 7321 is relatively wide, the length of the first portion 7321 can be adjusted to radiate other rf signals, such as WiFi signals, GPS signals, etc., without affecting the resonant frequency of the existing rf signals.

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

Since the physical length of the second radiation portion 72 is different from the physical length of the third radiation portion 73, the first IFA antenna and the second IFA antenna can radiate radio frequency signals with different frequencies, for example, when the length of the third radiation portion 73 is greater than the length of the second radiation portion 72, the first IFA antenna composed of the first radiation portion 71 and the second radiation portion 72 can radiate radio frequency signals in the first frequency band, and the second IFA antenna composed of the first radiation portion 71 and the third radiation portion 73 can be used for radiating radio frequency signals in the second frequency band and the third frequency band.

Specifically, referring to fig. 5, fig. 5 is a schematic diagram illustrating a fourth structure of the antenna radiator 70 according to the embodiment of the present application.

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

When the first feeding point 75 is connected to the power and the first grounding point 74 is grounded, when the first feeding point 75 feeds a radio frequency signal of a single frequency band, the second radiating portion 72 and the partial radiator from the first end 7101 of the first radiating portion 71 to the first feeding point 75 radiate the radio frequency signal of the first frequency band, wherein the radio frequency signal of the first frequency band may be a radio frequency signal of an N78 frequency band (3400MHZ to 3600 MHZ).

Specifically, when the antenna radiator 70 is implemented to radiate radio frequency signals in the first frequency band, the antenna radiator 70 operates as a first IFA antenna, that is, an antenna in the area 701 in fig. 5.

Referring to fig. 6, fig. 6 is a schematic view illustrating a fifth structure of an antenna radiator according to an embodiment of the present disclosure.

In one embodiment, when the first feeding point 75 is connected to the ground and the second grounding point 76 is connected to the ground, a plurality of rf signals may be fed through the first feeding point 75, for example, rf signals in the second band may be fed simultaneously with rf signals in the third band, where the rf signals in the second band may be rf signals in the N79 band (4800MHZ to 4900MHZ) and the rf signals in the third band may be rf signals in the N41 band (2515MHZ to 2675 MHZ).

It should be noted that, since the width of the first portion 7321 of the fourth radiation section 732 is wide, when the third radiation section 73 and the first radiation section 71 radiate the radio frequency signal in the second frequency band, the radiation of the radio frequency signal in the third frequency band can be realized without changing the resonant frequency of the second frequency band, for example, when the third radiation section 73 and the first radiation section 71 radiate the radio frequency signal in the N79 frequency band, the width of the first portion 7321 of the fourth radiation section 732 can be changed without changing the length of the third radiation section 73 so as not to change the resonant frequency of the radio frequency signal in the N79 frequency band, so that the resonant frequency of the radio frequency signal in the N79 frequency band can be realized while the resonant frequency of the radio frequency signal in the third radiation section 73 and the first radiation section 71 radiate the radio frequency signal in the 41 frequency band is realized without changing the resonant frequency.

As shown in fig. 6, the radiators from the second ends 7102 of the third radiation portions 73 and the first radiation portions 71 to the first feeding point 75 radiate the radio frequency signals in the second frequency band and the third frequency band, that is, the radiator covered by the area 702 in fig. 6 can be used for radiating the radio frequency signals in the second frequency band and the third frequency band.

Specifically, when the antenna radiator 70 is implemented to radiate radio frequency signals in the second frequency band and the third frequency band, the portion of the antenna radiator 70 used for radiating radio frequency signals is a second IFA antenna, that is, an antenna shown in the area 702 in fig. 5.

It can be understood that, when the first grounding point 74 and the second grounding point 76 are grounded and the first feeding point 75 is connected with power, the first feeding point 75 can access radio frequency signals of multiple frequency bands, for example, radio frequency signals of a first frequency band, a second frequency band and a third frequency band, that is, radio frequency signals of an N78 frequency band, an N79 frequency band and an N41 frequency band, and by feeding the multiple radio frequency signals through the first feeding point 75, the radiator 70 can radiate signals of multiple frequency bands simultaneously.

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

It should be noted that the antenna radiator 70 according to the embodiment of the present application may be formed by using a 3D-MID process technology using a three-dimensional laser. For example, the antenna radiator 70 may be formed directly on the substrate medium by laser direct structuring, first, laser-induced modification material is formed, and then, selective metal plating is performed, so that the antenna radiator 70 may not occupy an additional space inside the electronic device 100, and may not increase the thickness of the electronic device 100, and the electronic device 100 may be designed to be light and thin.

It will be appreciated that the antenna radiator 70 may also be formed on the base medium using other processes, such as: the antenna radiator 70 may be laser activated by laser induced general materials and then selectively metal plated to form the antenna radiator. For another example: the antenna radiator 70 may be formed by adhering and fixing the antenna radiator 70 inside the electronic device 100 by using a patch antenna process.

The antenna radiator 70 may be disposed on a battery cover of the battery 50, the rear cover 60 is made of plastic or ceramic, and the rear 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, for example, at a non-metal portion of the middle frame 30, and the specific position of the antenna radiator 70 is not limited in the embodiments of the present application.

Referring to fig. 7, fig. 7 is a second structural schematic diagram of the electronic device 100 according to the embodiment of the present disclosure.

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

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

In an embodiment, when the antenna radiator 70 radiates a radio frequency signal of a first frequency band, wherein the first frequency band signal may be a radio frequency signal of an N78 frequency band, specifically, the frequency is 3500MHz, referring to fig. 8, fig. 8 is a current distribution diagram of the antenna radiator 70 radiating a radio frequency signal of an N78 frequency band, at this time, the first feeding point 75 feeds the radio frequency signal of 3500MHz, and the first grounding point 74 is connected to the first grounding terminal 41 through the first elastic piece 201 and grounded.

As can be seen from fig. 8, the current at the first feeding point 75 is maximum and the current at the fourth end 7202 of the second radiating portion 72 is minimum, while the current on the second IFA antenna is almost zero, it can be understood that the first IFA antenna radiates rf signals with a frequency of 3500 MHz. Referring to fig. 9, fig. 9 is another current distribution diagram of the antenna radiator 70 radiating a radio frequency signal in the N78 frequency band.

According to the distribution principle that the rf signal is a sine wave signal, the difference between the zero point and the extreme point of the sine wave signal is a quarter of a cycle, so that the fourth end 7202 to the first feeding point 75 can generate a quarter of a wavelength of the rf signal in the N78 band, and at this time, the first IFA antenna generates a quarter of a mode operating in the N78 band.

Referring to fig. 10, fig. 10 is a current distribution diagram of the antenna radiator 70 for radiating the rf signal in the N79 frequency band according to the 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, the circuit board inputs a signal source of the N79 frequency band, specifically, a signal source with a frequency of 4920MHz is input on the circuit board 40, and the second grounding point 76 of the antenna radiator 70 is connected to the second grounding terminal 43 on the circuit board 40 through the third elastic sheet 203.

As shown in fig. 10, a first current minimum point is located at the sixth end 7302 of the third radiating portion 73, a second current minimum point 77 is located on the first radiating portion 71, and according to the distribution principle that the rf signal is a sine wave signal, the length from the first current minimum point (on the sixth end 7302) to the second current minimum point 77 can generate a half wavelength of the N79 frequency band, the current at the first feeding point 75 is the maximum, and a quarter wavelength of the N79 frequency band can be generated from the first feeding point 75 to the second current minimum point 77, so that the length from the sixth end 7302 to the first feeding point generates a three-quarter wavelength of the N79 frequency band, and a three-quarter mode operating in the N79 frequency band is generated on the second IFA antenna for radiating the rf signal of the N79 frequency band.

Referring to fig. 10, fig. 10 is a current distribution diagram of the antenna radiator 70 according to the embodiment of the present application for radiating the radio frequency signal in the N41 frequency band. In one embodiment, the first feeding point 75 of the antenna radiator 70 is connected to the first feeding terminal 42 of the circuit board through the second elastic piece 202, the circuit board inputs a signal source of the N41 frequency band, specifically, a signal source with a frequency of 2600MHz is input on the circuit board 40, and the second grounding point 76 of the antenna radiator 70 is connected to the second grounding terminal 43 on the circuit board 40 through the third elastic piece 203. Referring to fig. 11, fig. 11 is another current distribution diagram of the antenna radiator 70 according to the embodiment of the present application for radiating the radio frequency signal in the N79 frequency band.

As shown in fig. 12, a current minimum point is located at the sixth end 7302 of the third radiating part 73, a current maximum point is located at the first feeding point 75, a length from the sixth end 7302 to the first feeding point 75 may generate a quarter wavelength of the N41 band, and the second IFA antenna may be used to generate a quarter mode of the N41 band for radiating a radio frequency signal of the N41 band. Referring to fig. 13, fig. 13 is another current distribution diagram of the antenna radiator 70 according to the embodiment of the present application for radiating the radio frequency signal in the N41 frequency band.

The embodiment of the present application further provides an antenna assembly 200, as shown in fig. 14, fig. 14 is a schematic view of a first structure of the antenna assembly 200 provided in the 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.

Since the first radiator 70 and the second radiator 80 have two antenna branches with a short distance, the spacer 90 may be disposed between the first radiator 70 and the second radiator 80 to improve the isolation between the first radiator 70 and the second radiator 80, the spacer 90 may be a ground antenna, and the ground point 91 of the spacer 90 is connected to the fifth ground terminal 47 on the circuit board 40, so as to implement series connection with the motherboard on the circuit board 40.

It can be understood that, the two metal branches of the first radiator 70 and the second radiator 80 close to each other are both used for radiating the radio frequency signal of the N78 frequency band, and by adjusting the size of the series capacitance between the grounding point 91 of the grounding wire 90 and the fifth grounding end 47, the current path on the main board of the circuit board 40 for generating the radio frequency signal of the N78 frequency band can be adjusted, so that the isolation between the two metal branches of the first radiator 70 and the second radiator 80 close to each other is improved, and in an ideal case, the isolation between the two metal branches can reach about-9 db.

It is understood that the second radiator 80 includes a second feeding point 84, a third grounding point 85, and a fourth grounding point 86, and the circuit board 40 includes a second feeding terminal 44, a third grounding terminal 45, and a fourth 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.

Referring to fig. 15 in detail, fig. 15 is a second structural schematic diagram of an antenna assembly 200 according to an embodiment of the present application, where the second radiator 80 includes a fourth radiation portion 81, a fifth radiation portion 82, and a sixth radiation portion 83.

The fourth radiation portion 81 includes a seventh end 8101 and an eighth end 8102 which are oppositely disposed, the second feeding point 84, the third grounding point 85 and the fourth grounding point 86 are all disposed on the fourth radiation portion 81, specifically, the second feeding point 84 is disposed at a position close to the seventh end 8101, the fourth grounding point 86 is disposed at a position close to the middle of the fourth radiation portion 81, and the third grounding point 85 is disposed between the second feeding point 84 and the fourth grounding point 86.

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

The sixth radiation portion 83 includes an eleventh end 8301 and a twelfth end 83028101, wherein the eleventh end is connected to the eighth end 8102, the twelfth end 8302 is a free end of the sixth radiation portion 83, the free end of the sixth radiation portion 83 extends a part of the sixth radiation portion 81 in the direction of the seventh end 8101, and a fifth gap 88 is formed between the sixth radiation portion 83 and the fourth radiation portion 81.

It should be noted that the fourth radiation portion 81 and the fifth radiation portion 82 form a third IFA antenna, which can be used for radiating the radio frequency signal in the second frequency band, and the sixth radiation portion 83 and the fourth radiation portion 81 form a fourth IFA antenna, which can be used for radiating the radio frequency signal in the first frequency band.

In one embodiment, when the second feeding point 84 is electrically connected and the third grounding point 85 and the fourth grounding point 86 are both grounded, the circuit board 40 can feed a signal source in N78 band and N79 band, the fourth radiating portion 81 and the fifth radiating portion 82 can radiate a radio frequency signal in N79 band, the sixth radiating portion 83 and the fourth radiating portion 81 can radiate a radio frequency signal in N78 band, wherein the fifth radiating portion 82 and a part of the fourth radiating portion 81 can generate a mode in one fourth of N79 band, and the sixth radiating portion 83 and a part of the fourth radiating portion 81 can generate a mode in one fourth of N78 band.

In one embodiment, the length of the fifth radiation portion 82 may be adjusted, and the radiation of radio frequency signals in other frequency bands, such as WiFi signals, GPS signals, etc., may be implemented without affecting the radiation of the N79 frequency band.

In an embodiment, the positions of the second feeding point 84, the third grounding point 85, and the fourth grounding point 86 may be adjusted, so as to adjust the length of the second antenna radiator 80 to realize radiation of radio frequency signals in other frequency bands, where the second feeding point 84 may feed in multiple signal sources to realize simultaneous radiation of multiple frequency signals.

It should be noted that the second antenna radiator 80 of the embodiment of the present application may be formed by using a 3D-MID process technology using a three-dimensional laser. For example, the second antenna radiator 80 may adopt a laser direct structuring technology, first laser-induced modification material is formed, and then selective metal plating is directly formed on the base medium, and the second antenna radiator 80 may not occupy an additional space inside the electronic device 100, and may not increase the thickness of the electronic device 100, so as to implement a light and thin design of the electronic device 100.

It will be appreciated that the second antenna radiator 80 may also be formed on the base medium using other processes, such as: the second antenna radiator 80 may be laser activated by laser induced general materials and then selectively metal plated to form the antenna radiator. For another example: the second antenna radiator 80 may be formed by adhering and fixing the second antenna radiator 80 inside the electronic device 100 by using a patch antenna process.

The second antenna radiator 80 may be disposed on a battery cover of the battery 50, the rear cover 60 is made of plastic or ceramic, and the rear 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, for example, at a non-metal portion of the middle frame 30, and the specific position of the second antenna radiator 80 is not limited in the embodiments of the present application.

In one embodiment, the front case of the electronic device 100 is made of metal, the clearance between the front case and the outer edge of the second antenna radiator 80 needs to be 2mm, and the clearance below the spring plate connecting the circuit board 40 and the second antenna radiator 80 needs to be 2mm, so as to ensure the antenna performance of the second radiator.

Referring to fig. 14, in an embodiment, all the grounding terminals on the circuit board 40 are respectively connected to the grounding points of the first antenna radiator 70 and the second antenna radiator 80, and all the feeding terminals are respectively connected to the feeding points of the first antenna radiator 70 and the second antenna radiator 80, the first radiator 70 may be configured to simultaneously radiate radio frequency signals of the N78 frequency band, the N79 frequency band, and the N41 frequency band, and the second radiator 80 may be configured to simultaneously radiate radio frequency signals of the N78 frequency band and the N79 frequency band, so as to form a 2 x 2MIMO5G antenna on the antenna assembly.

It should be noted that, in the embodiment of the present application, only the radio frequency signals in the frequency band that can be radiated are exemplified, and of course, radio frequency signals in other frequency bands are also included, which should not be construed as limiting the present application.

Referring to fig. 16, fig. 16 is a graph illustrating the transmission efficiency of the rf signal radiated by the antenna assembly. Where curve a is the passive efficiency curve of the second radiator 80 and curve B is the passive efficiency curve of the first radiator 70. When the first radiator 70 may be configured to simultaneously radiate radio frequency signals of an N78 frequency band, an N79 frequency band, and an N41 frequency band, and the second radiator 80 may be configured to simultaneously radiate radio frequency signals of an N78 frequency band and an N79 frequency band, as shown in fig. 16, it can be seen that the passive efficiencies of the first antenna radiator 70 and the second antenna radiator 80 are both high when the target frequency band is radiated.

With continued reference to fig. 17, fig. 17 is a graph of S11 of the antenna element 200 according to the present embodiment. Where curve a represents the S11 curve for the second radiator 80, curve B represents the S11 curve for the first antenna radiator 70, and curve C represents the coupled portion of the first antenna radiator 70 and the second antenna radiator 80. When the first frequency band, the second frequency band, and the third frequency band are used, the return loss of the antenna assembly 200 is small, so that the conditions for radiating the radio frequency signals of the first frequency band, the second frequency band, and the third frequency band are met, and the antenna assembly 200 can radiate the radio frequency signals of the first frequency band, the second frequency band, and the third frequency band.

In the embodiment of the present application, the antenna assembly 200 may form a Multiple-Input Multiple-Output (MIMO) antenna combination of a high frequency combination in a cellular frequency band, a MIMO antenna combination of a high frequency combination in a cellular frequency band, and a MIMO antenna combination of a wifi frequency band.

For example, please refer to fig. 18, wherein fig. 18 is a third structural diagram of the electronic device 100 according to an embodiment of the present disclosure.

As shown in fig. 18, two antenna assemblies 200 may be disposed on the back of the electronic device 100, including two first radiators 70, two second antenna radiators 80, and two spacers 90. Therefore, a 4 x 4MIMO 5G antenna system covering N78 frequency band and N79 frequency band and a 2 x 2MIMO5G antenna system covering N41 frequency band are realized.

The antenna assemblies 200 are respectively arranged on two sides of the electronic device 100, one antenna assembly 200 is arranged on the upper part of one side, the other antenna assembly is arranged on the lower part of the other side, when a user holds the electronic device 100, the palm of the hand can block one antenna assembly 200, but the other antenna assembly 200 can still realize the radiation of radio frequency signals, so that the electronic device has better antenna performance.

It should be noted that the antenna assembly 200 may radiate radio frequency signals of different frequency bands, for example, one antenna assembly 200 may radiate radio frequency signals of an N41 frequency band, an N78 frequency band, and an N79 frequency band, and the other antenna assembly 200 may radiate radio frequency signals of a GPS frequency band, a wifi2.4g frequency band, and a wifi5g frequency band, and further, radio frequency signals of more frequency bands may be covered by the plurality of antenna radiators 70.

In an embodiment, a plurality of antenna assemblies 200 may be disposed in the electronic device 100, and a plurality of antenna radiators 70 may be disposed in the electronic device 100, and the antenna assemblies 200 and the antenna radiators 70 provided in the present application are merely exemplary and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that terms such as "first", "second", and the like are used merely to distinguish one similar element from another, and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated.

The above detailed description is provided for an antenna radiator, an antenna assembly, and an electronic device according to embodiments of the present application, and specific examples are applied herein to explain the principles and embodiments of the present application, and the description of the above embodiments is only used to help understand the method and the core ideas of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. An antenna radiator disposed inside an electronic device, the antenna radiator comprising:

the first radiating part and the second radiating part are used for radiating radio-frequency signals of a first frequency band, and the first radiating part and the third radiating part are used for radiating radio-frequency signals of a second frequency band and a third frequency band;

the fourth radiation section comprises a first part and a second part connected with the first part, the width of the first part is larger than that of the second part, and the first part is connected with the third radiation section; the first part is used for enabling the first radiation part and the third radiation part to radiate radio-frequency signals of the third frequency band under the condition that the resonance frequency of the second frequency band is not changed; the first part is also used for radiating other radio frequency signals of frequency bands except the first frequency band, the second frequency band and the third frequency band;

a first ground point disposed on the first radiating portion or between the third and fourth ends of the second radiating portion;

a second ground point provided on the first radiation section or between the fifth and sixth ends of the third radiation section;

and the first grounding point and the second grounding point are positioned on different sides of the first feeding point.

2. The antenna radiator of claim 1, wherein a first gap is formed between the first radiation part and the second radiation part;

a second gap is formed between the first radiating part and the third radiating part.

3. The antenna radiator of claim 2, wherein the second radiation section and the fourth radiation section are bent toward the same side of the first radiation portion, and a third gap is formed between a free end of the second radiation portion and a free end of the third radiation portion.

4. An antenna assembly, characterized in that the antenna assembly comprises:

a first radiator comprising the antenna radiator of any one of claims 1 to 3;

5. The antenna assembly of claim 4, wherein the second radiator comprises:

a fourth radiation part including a third end and a fourth end which are oppositely disposed;

the fifth radiation part comprises a fifth radiation section and a sixth radiation section connected with the fifth radiation section, the fifth radiation section is connected with the third end, and the sixth radiation section is bent towards the first radiation part;

a sixth radiation portion, including a seventh radiation section and an eighth radiation section connected to the seventh radiation section, the seventh radiation section being connected to the fourth end, the sixth radiation section being bent toward the first radiation portion, and a length of the sixth radiation portion being greater than a length of the fifth radiation portion;

the fourth radiation part and the fifth radiation part are used for radiating the radio-frequency signals of the first frequency band, and the fourth radiation part and the sixth radiation part are used for radiating the radio-frequency signals of the second frequency band.

6. The antenna assembly of claim 5, wherein the fourth radiating portion comprises a second feed point, a third ground point, a fourth ground point, the third ground point disposed between the second feed point and the fourth ground point.

7. An electronic device, comprising:

an antenna assembly comprising the antenna assembly of any one of claims 4 to 6; and

the circuit board is provided with a first grounding end, a first feed end and a second grounding end, the first grounding end is connected with a first grounding point, the first feed end is connected with a first feed point, and the second grounding end is connected with a second grounding point.

8. The electronic device of claim 7, further comprising:

the first elastic sheet is connected with the first grounding end through the first elastic sheet;

the first feed end is connected with the first feed point through the second elastic sheet; and

and the second grounding end is connected with the second grounding point through the third elastic sheet.

9. The electronic device according to claim 7, wherein when the first feeding point is fed to the signal sources of the first frequency band, the second frequency band and the third frequency band simultaneously, the first radiating portion and the third radiating portion are configured to radiate radio frequency signals of the second frequency band and the third frequency band, and the first radiating portion and the second radiating portion are configured to radiate radio frequency signals of the first frequency band.