WO2022151826A1

WO2022151826A1 - Antenna apparatus and electronic device

Info

Publication number: WO2022151826A1
Application number: PCT/CN2021/130278
Authority: WO
Inventors: 陈浩; 吴克利; 林栢暐; 王泽东
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-01-12
Filing date: 2021-11-12
Publication date: 2022-07-21
Also published as: CN112909541A; CN112909541B

Abstract

An antenna apparatus and an electronic device. The antenna apparatus comprises: a first antenna, which has a first clearance area; a second antenna, which has a second clearance area; a composite grounding structure, which is connected to the first antenna and the second antenna, wherein the composite grounding structure comprises a first grounding structure and a second grounding structure; a first conductor structure, which is close to the first clearance area; and a second conductor structure, which is close to the second clearance area.

Description

Antenna devices and electronic equipment

This application claims the priority of the Chinese patent application with the application number 202110035941.9 and the invention titled "Antenna Device and Electronic Equipment" filed with the China Patent Office on January 12, 2021, the entire contents of which are incorporated into this application by reference.

technical field

The present application relates to the field of communication technologies, and in particular, to an antenna device and an electronic device.

Background technique

In the fifth generation mobile communication system (5G), the frequency bands according to 3GPP are divided into FR1 (Frequency Range 1, 450-6000MHz) and FR2 (Frequency Range 2, 24.25-52.6GHz). The NR (New Radio) frequency band of 5G includes, for example, frequency bands such as N78 (3.3 to 3.8 GHz) and N79 (4.4 to 5.0 GHz). In order to meet the transmission speed requirements of 5G, it is usually realized through the multi-antenna MIMO (Multi-Input Multi-output) technology.

In order to meet the performance of MIMO, usually at least 2x2MIMO is required in the low frequency band (698-960MHz), and 4x4MIMO is required in the mid-high frequency band (1710-5000MHz). In addition, in addition to the 5G frequency band, there is also the LTE (Long Term Evolution, Long Term Evolution) frequency band.

SUMMARY OF THE INVENTION

Embodiments of the present application provide an antenna device and an electronic device, which can reduce the coupling degree between two antennas and improve the radiation efficiency of the antennas.

In a first aspect, an embodiment of the present application provides an antenna device, including:

a first antenna with a first headroom;

a second antenna having a second headroom;

a composite ground structure, connected to the first antenna and the second antenna, the composite ground structure includes a first ground structure and a second ground structure connected to the first ground structure;

a first conductor structure, respectively electrically connected to the first ground structure and the second ground structure, the first conductor structure being close to the first clearance area;

a second conductor structure electrically connected to the first ground structure and the second ground structure respectively, the second conductor structure being close to the second clearance area;

The first conductor structure and the second conductor structure are used for reducing the coupling degree between the first antenna and the second antenna.

In a second aspect, an embodiment of the present application further provides an electronic device, including an antenna device, where the antenna device includes:

a first antenna with a first headroom;

a second antenna having a second headroom;

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

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

FIG. 2 is a first front view of an antenna device provided by an embodiment of the present application.

FIG. 3 is a schematic structural diagram of a first conductor structure of an antenna device according to an embodiment of the present application.

FIG. 4 is a schematic structural diagram of a second conductor structure of an antenna device according to an embodiment of the present application.

FIG. 5 is a schematic diagram of a second principle of the antenna device provided by the embodiment of the present application.

FIG. 6 is a schematic diagram of a third principle of the antenna device provided by the embodiment of the present application.

FIG. 7 is a schematic diagram of a first three-dimensional structure of an antenna device provided by an embodiment of the present application.

FIG. 8 is a partial enlarged schematic view of the area A of the antenna device shown in FIG. 7 .

FIG. 9 is a schematic diagram of a second three-dimensional structure of an antenna device provided by an embodiment of the present application.

FIG. 10 is a partial enlarged schematic view of the area B of the antenna device shown in FIG. 9 .

FIG. 11 is a cross-sectional view of the antenna device shown in FIG. 2 along the direction P1-P2.

FIG. 12 is a second front view of the antenna device provided by the embodiment of the application.

FIG. 13 is a schematic diagram of a fourth principle of the antenna device provided by the embodiment of the present application.

FIG. 14 is a schematic diagram of a fifth principle of the antenna device provided by the embodiment of the present application.

FIG. 15 is a third front view of the antenna device provided by the embodiment of the application.

FIG. 16 is a schematic diagram of a first structure of an electronic device provided by an embodiment of the present application.

FIG. 17 is a schematic diagram of a second 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 with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

An embodiment of the present application provides an antenna device, and the antenna device can be set in an electronic device. The antenna device can transmit wireless signals, for example, transmit 4G (the 4th generation mobile communication technology, fourth generation mobile communication technology) signals, 5G (fifth generation, fifth generation mobile communication) signals and other wireless signals, so as to realize electronic equipment and base stations. or wireless communication with other electronic devices.

Referring to FIG. 1 and FIG. 2 at the same time, FIG. 1 is a schematic diagram of the first principle of the antenna device 100 provided by the embodiment of the present application, and FIG. 2 is a front view of the first type of the antenna device 100 provided by the embodiment of the present application. The antenna device 100 includes a first antenna 10 , a second antenna 20 , a composite ground structure 30 , a first conductor structure 41 and a second conductor structure 51 .

Wherein, both the first antenna 10 and the second antenna 20 may be used for transmitting wireless signals. It can be understood that transmitting wireless signals may include situations such as transmitting wireless signals, receiving wireless signals, transmitting and receiving wireless signals, and the like. The first antenna 10 has a first clearance area 11 , and the first clearance area 11 can improve the radiation efficiency of the first antenna 10 . The second antenna 20 has a second clearance area 21 , and the second clearance area 21 can improve the radiation efficiency of the second antenna 20 . The first clearance area 11 and the second clearance area 21 are arranged opposite to each other.

The first antenna 10 and the second antenna 20 can be formed in various ways. For example, the first antenna 10 and the second antenna 20 can be formed by the metal frame of the electronic device, the first antenna 10 and the second antenna 20 can be formed by FPC (Flexible Printed Circuit, flexible circuit board), or the LDS (Laser Direct Structuring (laser direct structuring technology) process forms the first antenna 10 and the second antenna 20 . It should be noted that the first antenna 10 and the second antenna 20 may be formed in the same manner, or may be formed in different manners.

The first antenna 10 and the second antenna 20 may be in the form of an inverted F antenna (Inverted F Antenna, IFA), a loop antenna (Loop Antenna), a slot antenna (Open Slot Antenna) and other types of antennas. It should be noted that, the first antenna 10 and the second antenna 20 may be antennas of the same form, or may be antennas of different forms.

The composite ground structure 30 forms the ground system of the antenna device 100 . The composite grounding structure 30 includes a first grounding structure 31 and a second grounding structure 32 . The second ground structure 32 is connected to the first ground structure 31 . Both the first ground structure 31 and the second ground structure 32 may be formed by a conductor structure. For example, in some embodiments, the first ground structure 31 may be formed by a metal middle frame of an electronic device, and the second ground structure 32 may be formed by a printed circuit board (PCB) of the electronic device. It can be understood that, in some other embodiments, the first grounding structure 31 can also be formed by a circuit board of an electronic device, and the second grounding structure 32 can also be formed by a metal middle frame of the electronic device.

The composite grounding structure 30 is connected to the first antenna 10 and the second antenna 20 to realize the grounding of the first antenna 10 and the second antenna 20 . For example, the first antenna 10 and the second antenna 20 may be connected to the first grounding structure 31 to realize grounding.

The first conductor structure 41 is electrically connected to the first ground structure 31 and the second ground structure 32 . Wherein, the first conductor structure 41 is close to the first clearance area 11 .

The second conductor structure 51 is electrically connected to the first ground structure 31 and the second ground structure 32 . The second conductor structure 51 is close to the second clearance area 21 .

When the first antenna 10 and the second antenna 20 transmit wireless signals, the first conductor structure 41 and the second conductor structure 51 can form resonance, so that the current distribution of the first antenna 10 and the second antenna 20 changes, and the first antenna is reduced. 10 and the second antenna 20, thereby improving the isolation between the first antenna 10 and the second antenna 20.

The shape and size of the first conductor structure 41 and the second conductor structure 51 may be adapted to the layout space in which the antenna device 100 is located. For example, in some embodiments, referring to FIG. 3 and FIG. 4 at the same time, FIG. 3 is a schematic structural diagram of the first conductor structure 41 of the antenna device provided by the embodiment of the present application, and FIG. 4 is the first conductor structure 41 of the antenna device provided by the embodiment of the present application. A schematic diagram of the structure of the two-conductor structure 51 . The first conductor structure 41 may be in a bent shape, as shown in FIG. 3 , so as to adapt to the layout space where the first antenna 10 is located. The second conductor structure 51 may also be bent, as shown in FIG. 4 , so as to adapt to the layout space where the second antenna 20 is located.

It can be understood that since the antenna apparatus 100 is arranged in an electronic device, and the layout space in the electronic device is generally limited, the distance between the first antenna 10 and the second antenna 20 is relatively close. Therefore, when the first antenna 10 and the second antenna 20 transmit wireless signals, the two antennas will be coupled with each other, resulting in poor isolation between the first antenna 10 and the second antenna 20 and reducing the first antenna 10. Radiation efficiency of the second antenna 20 .

Therefore, arranging the first conductor structure 41 and the second conductor structure 51 can reduce the coupling degree between the first antenna 10 and the second antenna 20 , thereby improving the radiation efficiency of the first antenna 10 and the second antenna 20 . It can be understood that since the first conductor structure 41 is close to the first clearance area 11 of the first antenna 10 and the second conductor structure 51 is close to the second clearance area 21 of the second antenna 20 , the first conductor structure 41 mainly improves the first antenna. 10, the second conductor structure 51 mainly improves the radiation efficiency of the second antenna 20.

For example, when only the first antenna 10 is provided in the electronic device, the radiation efficiency of the first antenna 10 can reach 85%. When the second antenna 20 is installed on the basis of the existence of the first antenna 10, the radiation efficiency of the first antenna 10 and the second antenna 20 may both be reduced to 70%. At this time, after the first conductor structure 41 and the second conductor structure 51 are arranged, the radiation efficiency of the first antenna 10 and the second antenna 20 can be improved. For example, the radiation efficiency of the first antenna 10 can be improved to nearly 80%. The radiation efficiency of the two antennas 20 can be improved to nearly 75%.

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

In the antenna device 100 of the embodiment of the present application, the first conductor structure 41 and the second conductor structure 51 are arranged, and the first conductor structure 41 is close to the clearance area of the first antenna 10 and the second conductor structure 51 is close to the second antenna 20 The clearance area can reduce the coupling between the first antenna 10 and the second antenna 20, thereby improving the isolation between the first antenna 10 and the second antenna 20, and improving the radiation of the first antenna 10 and the second antenna 20. efficiency.

In some embodiments, referring to FIG. 5 , FIG. 5 is a schematic diagram of the second principle of the antenna apparatus 100 provided by the embodiments of the present application.

Wherein, the antenna device 100 further includes the first capacitor 42 . The first capacitors 42 are electrically connected to the first conductor structure 41 and the second ground structure 32, respectively. Thus, the first ground structure 31 may be electrically connected to the second ground structure 32 through the first conductor structure 41 and the first capacitor 42 .

In some embodiments, referring to FIG. 6 , FIG. 6 is a schematic diagram of a third principle of the antenna apparatus 100 provided by the embodiments of the present application.

Wherein, the first capacitor 42 can also be replaced by the first inductor 43 . The first inductor 43 is electrically connected to the first conductor structure 41 and the second ground structure 32, respectively. Thus, the first ground structure 31 may be electrically connected to the second ground structure 32 through the first conductor structure 41 and the first inductor 43 .

It can be understood that the first conductor structure 41 may be formed by metal components in the electronic device. For example, the first conductor structure 41 may be a metal dome, a metal screw or the like.

In practical applications, the first ground structure 31 may be formed by a metal middle frame of an electronic device, and the second ground structure 32 may be formed by a PCB of the electronic device. The first capacitor 42 or the first inductor 43 may be provided on the PCB. One end of the first conductor structure 41 formed by metal domes or metal screws can be connected to the metal middle frame, and the other end can be connected to the first capacitor 42 or the first inductor 43 through the printed circuit on the PCB. An inductor 43 is then connected to the grounding structure on the PCB, and the grounding structure on the PCB can be understood as the second grounding structure. The capacitance value of the first capacitor 42 and the inductance value of the first inductor 43 can be set according to actual needs.

In some embodiments, continued reference is made to FIG. 5 . Wherein, the antenna device 100 further includes a second capacitor 52 . The second capacitor 52 is electrically connected to the second conductor structure 51 and the second ground structure 32 . Thus, the first ground structure 31 can also be electrically connected to the second ground structure 32 through the second conductor structure 51 and the second capacitor 52 .

In some embodiments, continued reference is made to FIG. 6 . Wherein, the second capacitor 52 can also be replaced with a second inductor 53 . The second inductor 53 is electrically connected to the second conductor structure 51 and the second ground structure 32 . Thus, the first ground structure 31 may also be electrically connected to the second ground structure 32 through the second conductor structure 51 and the second inductor 53 .

It can be understood that the second conductor structure 51 can also be formed by a metal component in an electronic device. For example, the second conductor structure 51 may also be a metal dome, a metal screw or the like.

In practical applications, the second capacitor 52 or the second inductor 53 can also be arranged on the PCB. One end of the second conductor structure 51 formed by metal domes or metal screws can be connected to the metal middle frame, and the other end can be connected to the second capacitor 52 or the second inductor 53 through the printed circuit on the PCB. The two inductors 53 are then connected to the ground structure on the PCB. The capacitance value of the second capacitor 52 and the inductance value of the second inductor 53 can be set according to actual needs.

It can be understood that in practical applications, the first conductor structure 41 may be electrically connected to the second ground structure 32 through the first capacitor 42 , and the second conductor structure 51 may be electrically connected to the second ground structure 32 through the second inductor 53 . Alternatively, the first conductor structure 41 may be electrically connected to the second ground structure 32 through the first inductor 43 , and the second conductor structure 51 may be electrically connected to the second ground structure 32 through the second capacitor 52 .

In some embodiments, referring to FIG. 7 , FIG. 8 , FIG. 9 , and FIG. 10 at the same time, FIG. 7 is a schematic diagram of the first three-dimensional structure of the antenna device 100 provided by the embodiment of the present application, and FIG. 8 is the antenna device A shown in FIG. 7 . FIG. 9 is a schematic diagram of a second type of three-dimensional structure of the antenna device 100 according to an embodiment of the present application, and FIG. 10 is a schematic diagram of a partially enlarged area of the antenna device B shown in FIG. 9 .

The first antenna 10 includes a first open end 12 . The second antenna 20 includes a second open end 22 . In practical applications, the first antenna 10 and the second antenna 20 may be respectively disposed on both sides of the electronic device, and the first open end 12 and the second open end 22 are disposed opposite to each other.

The first ground structure 31 is provided with spaced first notches 311 and second notches 313 . The first notch 311 and the second notch 313 may be located at two corners of the first grounding structure 31 , respectively, or on the sides of the first grounding structure 31 close to the corners. The first notch 311 forms a first sidewall 312 on the first ground structure 31 . The first side wall 312 faces the first open end 12 . The second notch 313 forms a third sidewall 314 on the first ground structure 31 . The third side wall 314 faces the second open end 22 . It can be understood that the first sidewall 312 may be any sidewall formed by the first notch 311 on the first grounding structure 31 . The third sidewall 314 may be any sidewall formed by the second notch 313 on the first ground structure 31 .

Wherein, the first conductor structure 41 is connected with the first sidewall 312 to realize the connection with the first ground structure 31 . The second conductor structure 51 is connected with the third sidewall 314 to realize the connection with the first ground structure 31 .

A first groove 321 may be provided on the second ground structure 32 . The first groove 321 forms a second sidewall 322 on the second ground structure 32 . It can be understood that the second side wall 322 may be any side wall formed by the first groove 321 on the second grounding structure 32 .

The first conductor structure 41 is electrically connected to the second sidewall 322 . For example, the first conductor structure 41 may be electrically connected to the second sidewall 322 through the first capacitor 42 or the first inductor 43 to achieve electrical connection with the second ground structure 32 .

It can be understood that, in some embodiments, the second ground structure 32 may also be provided with a second groove. The second groove forms a fourth sidewall on the second ground structure. The fourth sidewall may be any sidewall formed by the second groove on the second ground structure 32 . The structure of the second groove may be similar to that of the first groove 321 .

The second conductor structure 51 is electrically connected to the fourth sidewall. For example, the second conductor structure 51 may be electrically connected to the fourth sidewall through a second capacitor 52 or a second inductor 53 to achieve electrical connection with the second ground structure 32 .

It should be noted that, only the first groove 321 may be provided on the second grounding structure 32, or only the second groove may be provided, or the first groove 321 and the second groove may be provided at the same time. The grooves on the second grounding structure 32 can be set according to actual application requirements.

In some embodiments, referring to FIG. 11 and FIG. 12 at the same time, FIG. 11 is a cross-sectional view of the antenna device 100 shown in FIG. 2 along the P1-P2 direction, and FIG. 12 is a second front view of the antenna device 100 provided in this embodiment of the application .

The antenna arrangement 100 also includes at least one decoupling branch 60 . For example, as shown in FIG. 11 , the antenna device 100 includes one decoupling branch 60 ; as shown in FIG. 12 , the antenna device 100 includes four decoupling branches 60 . Each decoupling branch 60 is electrically connected to the first ground structure 31 and the second ground structure 32 . Each decoupling branch 60 can reduce the coupling degree between the first antenna 10 and the second antenna 20 , thereby further improving the isolation degree between the first antenna 10 and the second antenna 20 .

For example, when the first antenna 10 and the second antenna 20 are provided in the electronic device, the radiation efficiency of the first antenna 10 and the second antenna 20 may both be reduced to 70%. After the first conductor structure 41 and the second conductor structure 51 are provided, the radiation efficiency of the first antenna 10 can be improved to, for example, close to 80%, and the radiation efficiency of the second antenna 20 can be improved to, for example, close to 75%. On this basis, when one or more decoupling branches 60 are provided, the radiation efficiency of the first antenna 10 can be improved to, for example, 80%, and the radiation efficiency of the second antenna 20 can also be improved to, for example, 80%.

It can be understood that when there are multiple decoupling branches 60, one of the multiple decoupling branches 60 may play a major role in reducing the coupling degree between the first antenna 10 and the second antenna 20, and the others may play a role in reducing the coupling between the first antenna 10 and the second antenna 20. secondary effect.

Therefore, by arranging the decoupling branch 60 in the antenna device 100 , the coupling degree between the first antenna 10 and the second antenna 20 can be further reduced, thereby further improving the radiation efficiency of the first antenna 10 and the second antenna 20 .

In some embodiments, referring to FIG. 13 , FIG. 13 is a schematic diagram of the fourth principle of the antenna apparatus provided by the embodiments of the present application.

Wherein, each decoupling branch 60 includes a third conductor structure 61 and a third capacitor 62 . The third conductor structure 61 is connected to the first ground structure 31 . It can be understood that the third conductor structure 61 can also be formed by metal components in the electronic device. For example, the third conductor structure 61 may also be a metal dome, a metal screw or the like. The third capacitor 62 is electrically connected to the third conductor structure 61 and the second ground structure 32 . Thus, the first ground structure 31 may also be electrically connected to the second ground structure 32 through the third conductor structure 61 , the inductor or the third capacitor 62 .

In some embodiments, referring to FIG. 14 , FIG. 14 is a schematic diagram of a fifth principle of the antenna apparatus 100 provided by the embodiments of the present application.

Wherein, the third capacitor 62 can be replaced by a third inductor 63 . The third inductor 63 is electrically connected to the third conductor structure 61 and the second ground structure 32 . Therefore, the first ground structure 31 can also be electrically connected to the second ground structure 32 through the third conductor structure 61 and the third inductor 63 .

It can be understood that the capacitance value of the third capacitor 62 and the inductance value of the third inductor 63 can be set according to actual needs.

In some embodiments, referring to FIG. 15 , FIG. 15 is a third front view of the antenna apparatus 100 provided by the embodiments of the present application.

The first antenna 10 further includes a first short-circuit terminal 13 , a first feeding point 14 and a first tuning point 15 . The first feeding point 14 is located between the first short-circuit end 13 and the first open end 12 . The first tuning point 15 may be located between the first feeding point 14 and the first open end 12 .

The first short-circuit end 13 is connected to the first grounding structure 31 to ground the first antenna 10 . For example, the first short-circuit terminal 13 can be connected to the first grounding structure 31 formed by the metal middle frame through a metal bracket, or can be directly connected to the first grounding structure 31 formed by the metal middle frame to realize grounding.

The antenna device 100 also includes a first feed 323 . The first feed source 323 may be disposed on the second ground structure 32 . For example, when the second ground structure 32 is formed by the PCB, the first feed source 323 may be disposed on the PCB. The first feed 323 is used to provide the excitation signal.

The first feeding point 14 is electrically connected to the first feeding source 323 , so that the first feeding source 323 feeds the first antenna 10 . Therefore, the first antenna 10 can transmit the excitation signal fed by the first feed source 323 to radiate the wireless signal.

The first tuning point 15 is electrically connected to the second ground structure 32 through the first antenna switch 325 . The first antenna switch 325 can be used to switch the radiation frequency band of the first antenna 10 , so that the first antenna 10 can transmit wireless signals of different frequency bands.

In some embodiments, with continued reference to FIG. 15 , the second antenna 20 further includes a second short-circuit terminal 23 , a second feeding point 24 and a second tuning point 25 . The second feeding point 24 is located between the second short-circuit end 23 and the second open end 22 . The second tuning point 25 may be located between the second feed point 24 and the second open end 22 .

The second short-circuit end 23 is connected to the first grounding structure 31 to ground the second antenna 20 . For example, the second short-circuit terminal 23 may be connected to the first grounding structure 31 formed by the metal middle frame through a metal bracket, or may be directly connected to the first grounding structure 31 formed by the metal middle frame to realize grounding.

The antenna arrangement 100 also includes a second feed 324 . The second feed source 324 may be disposed on the second ground structure 32 . For example, when the second ground structure 32 is formed by the PCB, the second feed source 324 may be disposed on the PCB. The second feed 324 may also be used to provide the excitation signal.

The second feeding point 24 is electrically connected to the second feeding source 324 , so that the second feeding source 324 feeds the second antenna 20 . Thus, the second antenna 20 can transmit the excitation signal fed by the second feed source 324 to radiate the wireless signal.

The second tuning point 25 is electrically connected to the second ground structure 32 through the second antenna switch 326 . The second antenna switch 326 can be used to switch the radiation frequency band of the second antenna 20, so that the second antenna 20 can transmit wireless signals of different frequency bands.

In some embodiments, the radiation frequency band of the first antenna 10 and the radiation frequency band of the second antenna 20 are the same frequency band or adjacent frequency bands. It can be understood that when the radiation frequency band of the first antenna 10 and the radiation frequency band of the second antenna 20 are the same frequency band or adjacent frequency bands, the coupling phenomenon between the first antenna 10 and the second antenna 20 is more serious, so the first conductor is provided. The structure 41 , the second conductor structure 51 and the at least one decoupling branch 60 can better reduce the coupling degree between the first antenna 10 and the second antenna 20 , and improve the radiation frequency of the first antenna 10 and the second antenna 20 in their respective radiation frequency bands. s efficiency.

In the antenna device 100 of the embodiment of the present application, the first conductor structure 41 and the second conductor structure 51 are arranged, and the first conductor structure 41 is close to the clearance area of the first antenna 10 and the second conductor structure 51 is close to the second antenna 20 The clearance area can reduce the coupling degree between the first antenna 10 and the second antenna 20 , thereby improving the radiation efficiency of the first antenna 10 and the second antenna 20 . In addition, by further disposing at least one decoupling branch 60 , the coupling degree between the first antenna 10 and the second antenna 20 can be further reduced, thereby further improving the radiation efficiency of the first antenna 10 and the second antenna 20 .

The embodiments of the present application also provide an electronic device. The electronic device may be a device such as a smart phone, a tablet computer, or the like, and may also be a device capable of wireless communication, such as a game device, an AR (Augmented Reality, augmented reality) device, a notebook computer, and a desktop computing device.

Referring to FIG. 16 , FIG. 16 is a schematic diagram of a first structure of an electronic device 200 according to an embodiment of the present application.

The electronic device 200 includes the antenna device 100 . The antenna apparatus 100 may be the antenna apparatus 100 described in any of the foregoing embodiments. The electronic device 200 can transmit wireless signals through the antenna device 100, thereby realizing a wireless communication function.

In some embodiments, referring to FIG. 17 , FIG. 17 is a schematic diagram of a second structure of the electronic device 200 provided by the embodiments of the present application.

The electronic device 200 includes a metal frame 210 , a metal middle frame 220 and a circuit board (PCB) 230 .

The metal frame 210 forms a side frame of the electronic device 200 . The material of the metal frame 210 may include materials such as magnesium alloy, aluminum alloy, and the like. A first metal branch 211 and a second metal branch 212 are formed on the metal frame 210 at intervals. The first metal branch 211 forms the above-mentioned first antenna 10 . The second metal branch 212 forms the second antenna 20 described above. For example, the first slit 213 and the second slit 214 may be spaced apart on the metal frame 210 , the first metal branch 211 is formed through the first slit 213 , and the second metal branch 212 is formed through the second slit 214 . Therefore, the first antenna 10 and the second antenna 20 can be formed by the metal frame 210 , thereby realizing the multiplexing of the metal frame 210 , and there is no need to separately dispose the first antenna 10 and the second antenna 20 in the electronic device 200 .

The metal middle frame 220 is the main carrying structure of the electronic device 200 , and is used to carry various functional components and electronic devices of the electronic device 200 . The material of the metal middle frame 220 may also include, for example, magnesium alloy, aluminum alloy and other materials. In addition, it can be understood that the metal middle frame 220 can also be injected with a non-metallic structure, for example, plastic is injected on the metal middle frame 220. The metal frame 210 is connected to the metal middle frame 220 .

The metal middle frame 220 may form the above-mentioned first ground structure 31 .

It can be understood that, in some embodiments, the metal middle frame 220 and the metal frame 210 may be integrally formed. For example, the metal middle frame 220 and the metal frame 210 may be integrally formed through an injection molding process.

The PCB 230 is disposed on the metal middle frame 220. The PCB 230 may be the main board of the electronic device 200 . Various functional components and circuit structures such as processors, memories, and radio frequency processing circuits can be integrated on the PCB 230 .

Wherein, the PCB 230 can form the above-mentioned second ground structure 32.

The antenna device and the electronic device provided by the embodiments of the present application have been described in detail above. The principles and implementations of the present application are described herein by using specific examples, and the descriptions of the above embodiments are only used to help the understanding of the present application. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific embodiments and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

An antenna device, comprising:

a first antenna with a first headroom;

a second antenna having a second headroom;

a composite ground structure, connected to the first antenna and the second antenna, the composite ground structure includes a first ground structure and a second ground structure connected to the first ground structure;

a first conductor structure, respectively electrically connected to the first ground structure and the second ground structure, the first conductor structure being close to the first clearance area;

a second conductor structure electrically connected to the first ground structure and the second ground structure respectively, the second conductor structure being close to the second clearance area;

The first conductor structure and the second conductor structure are used for reducing the coupling degree between the first antenna and the second antenna.
The antenna device of claim 1, further comprising:

A first capacitor or a first inductor is electrically connected to the first conductor structure and the second ground structure, respectively.
The antenna device of claim 2, wherein:

the first antenna includes a first open end;

The first ground structure is provided with a first gap, the first gap forms a first side wall on the first ground structure, and the first side wall faces the first open end;

The first conductor structure is connected to the first sidewall.
The antenna device of claim 3, wherein:

The second ground structure is provided with a first groove, and the first groove forms a second sidewall on the second ground structure;

The first capacitor or first inductor is electrically connected to the second sidewall.
The antenna device of claim 1, further comprising:

A second capacitor or a second inductor is electrically connected to the second conductor structure and the second ground structure, respectively.
The antenna device of claim 5, wherein:

the second antenna includes a second open end;

The first ground structure is provided with a second gap, and the second gap forms a third side wall on the first ground structure, and the third side wall faces the second open end;

The second conductor structure is connected to the third sidewall.
The antenna device of claim 6, wherein:

The second ground structure is provided with a second groove, and the second groove forms a fourth side wall on the second ground structure;

The second capacitor or the second inductor is electrically connected to the fourth sidewall.
The antenna device of claim 1, further comprising:

at least one decoupling branch, the at least one decoupling branch is electrically connected to the first ground structure and the second ground structure, and the at least one decoupling branch is used to reduce the distance between the first antenna and the second ground structure The degree of coupling between the antennas.
The antenna device according to claim 8, wherein the number of the decoupling branches is four, and the four decoupling branches are arranged at intervals.
The antenna device of claim 8, wherein each of the decoupling branches comprises:

a third conductor structure connected to the first ground structure;

A third inductor or a third capacitor is electrically connected to the third conductor structure and the second ground structure, respectively.
The antenna device of claim 1, wherein:

The first antenna further includes a first short-circuit end, and the first short-circuit end is connected to the first ground structure to ground the first antenna.
The antenna device according to claim 1, further comprising a first feed source, the first feed source is disposed on the second ground structure;

The first antenna further includes a first feeding point, and the first feeding point is electrically connected to the first feeding source, so that the first feeding source feeds the first antenna.
The antenna device of claim 1, wherein:

The first antenna further includes a first tuning point, the first tuning point is electrically connected to the second ground structure through a first antenna switch, and the first antenna switch is used to switch the radiation frequency band of the first antenna .
The antenna device of claim 1, wherein:

The second antenna further includes a second short-circuit end, and the second short-circuit end is connected to the first ground structure to ground the second antenna.
The antenna device according to claim 1, further comprising a second feed source, the second feed source is disposed on the second ground structure;

The second antenna further includes a second feeding point, which is electrically connected to the second feeding source, so that the second feeding source feeds the second antenna.
The antenna device of claim 1, wherein:

The second antenna further includes a second tuning point, the second tuning point is electrically connected to the second ground structure through a second antenna switch, and the second antenna switch is used to switch the radiation frequency band of the second antenna .
The antenna device of claim 1, wherein:

The radiation frequency band of the first antenna and the radiation frequency band of the second antenna are the same frequency band or adjacent frequency bands.
An electronic device, comprising an antenna device, the antenna device comprising:

a first antenna with a first headroom;

a second antenna having a second headroom;

a composite ground structure, connected to the first antenna and the second antenna, the composite ground structure includes a first ground structure and a second ground structure connected to the first ground structure;

a first conductor structure, respectively electrically connected to the first ground structure and the second ground structure, the first conductor structure being close to the first clearance area;

a second conductor structure electrically connected to the first ground structure and the second ground structure respectively, the second conductor structure being close to the second clearance area;

The first conductor structure and the second conductor structure are used for reducing the coupling degree between the first antenna and the second antenna.
The electronic device according to claim 18, further comprising a metal frame, a first metal branch and a second metal branch are formed on the metal frame, the first metal branch forms the first antenna, and the second metal branch forms the first antenna. The metal branch forms the second antenna.
The electronic device of claim 18, further comprising a metal middle frame, the metal middle frame forming the first ground structure.
The electronic device of claim 18, further comprising a circuit board forming the second ground structure.