Antenna device and electronic equipment

Abstract

An embodiment of the present application discloses an antenna device and an electronic device, the antenna device including: a radiator, the radiator having an axisymmetric shape; a first feeding port and a second feeding port, the first feeding port and the second feeding port being respectively connected to the radiator and separated by a preset distance; the preset distance being determined by the feeding form of the first feeding port and the second feeding port; the first feeding port being used to feed an excitation signal into the radiator to excite the formation of a first current distribution in the radiator; the second feeding port being used to feed an excitation signal into the radiator to excite the formation of a second current distribution in the radiator; the first current distribution and the second current distribution being orthogonal to each other, thereby suppressing the coupling effect between the first feeding port and the second feeding port.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular to an antenna device and an electronic device. Background Art

[0002] Multiple Input Multiple Output (MIMO) antennas can use multiple spatial channels to transmit and receive signals, thereby increasing channel capacity.

[0003] In electronic devices, to achieve decoupling between MIMO antennas, solutions such as increasing antenna spacing or adding additional decoupling devices are often used. However, these solutions are complex to design antennas, not only taking up more space but also resulting in poor decoupling and low isolation. Summary of the Invention

[0004] The embodiments of the present application provide an antenna device and an electronic device, which not only have a simple antenna structure and can save antenna deployment space, but also have high isolation.

[0005] The technical solution of the embodiment of the present application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides an antenna device, including:

[0007] a radiator, wherein the radiator is axially symmetrical;

[0008] a first feeding port and a second feeding port, wherein the first feeding port and the second feeding port are respectively connected to the radiator and are separated by a preset distance; the preset distance is determined by the feeding form of the first feeding port and the second feeding port;

[0009] The first feeding port is used to feed an excitation signal into the radiator to excite the radiator to form a first current distribution;

[0010] The second feeding port is used to feed the excitation signal into the radiator to excite the radiator to form a second current distribution;

[0011] The first current distribution and the second current distribution are orthogonal to each other, thereby suppressing the coupling effect between the first feeding port and the second feeding port.

[0012] In the above antenna device, when the feeding modes of the first feeding port and the second feeding port are both floor feeding or direct feeding, the preset distance between the first feeding port and the second feeding port is one quarter of the length of the radiator;

[0013] In the case where the feeding form of one of the first feeding port and the second feeding port is floor feeding and the feeding form of the other feeding port is direct feeding, the preset distance between the first feeding port and the second feeding port is half the length of the radiator.

[0014] In the above antenna device, the antenna device further comprises: a metal floor;

[0015] The first feeding port and the second feeding port are respectively connected to the metal floor, and the metal floor is used to provide the excitation signal to the first feeding port and the second feeding port;

[0016] The feeding forms of the first feeding port and the second feeding port are both floor feeding, and the preset distance between the first feeding port and the second feeding port is one quarter of the length of the radiator.

[0017] In the above antenna device, the antenna device further comprises: a metal floor and a signal coaxial line;

[0018] Of the first feeding port and the second feeding port, one feeding port is connected to the metal floor, and the metal floor is used to provide the excitation signal to the connected feeding port; the other feeding port is opened on the radiator and connected to the signal coaxial line, and the signal coaxial line is used to transmit the input excitation signal to the connected feeding port;

[0019] Of the first feeding port and the second feeding port, the feeding form of the feeding port connected to the metal floor is floor feeding, and the feeding form of the feeding port connected to the signal coaxial line is direct feeding;

[0020] The preset distance between the first feeding port and the second feeding port is half of the length of the radiator.

[0021] In the above antenna device, the antenna device further comprises: a first coaxial line and a second coaxial line;

[0022] The first feeding port and the second feeding port are respectively provided on the radiator, the first feeding port is connected to the first coaxial line, and the first coaxial line is used to transmit the input excitation signal to the first feeding port, and the second feeding port is connected to the second coaxial line, and the second coaxial line is used to transmit the input excitation signal to the second feeding port;

[0023] The feeding forms of the first feeding port and the second feeding port are both direct feeding, and the preset distance between the first feeding port and the second feeding port is one quarter of the length of the radiator.

[0024] In the above antenna device, the metal floor is arranged around the radiator.

[0025] In the above antenna device, the metal floor is in a square shape or a half square shape.

[0026] In the above antenna device, the shape of the radiator is any one of the following shapes: circular, rectangular, square, triangular, and star.

[0027] In a second aspect, an embodiment of the present application provides an electronic device, which includes the above-mentioned antenna device.

[0028] In the above electronic device, it also includes: a shell; at least part of the antenna device is arranged inside the shell, or at least part of the antenna device is arranged outside the shell, or at least part of the antenna assembly is integrated with the shell.

[0029] The embodiment of the present application provides an antenna device and an electronic device, the antenna device comprising: a radiator, the radiator being axially symmetrical; a first feeding port and a second feeding port, the first feeding port and the second feeding port being respectively connected to the radiator and separated by a preset distance; the preset distance being determined by the feeding form of the first feeding port and the second feeding port; the first feeding port being used to feed an excitation signal into the radiator to excite the formation of a first current distribution in the radiator; the second feeding port being used to feed an excitation signal into the radiator to excite the formation of a second current distribution in the radiator; the first current distribution and the second current distribution being orthogonal to each other, thereby suppressing the coupling effect between the first feeding port and the second feeding port. In the antenna device provided in the embodiment of the present application, the two feeding ports can share the same radiator, and the structure is simple, thereby saving deployment space. In addition, the two feeding ports can excite the radiator to form orthogonal current distributions, so that the two feeding ports have high isolation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the structure of an antenna device provided in an embodiment of the present application Figure 1 ;

[0031] Figure 2 A schematic diagram of the structure of an antenna device provided in an embodiment of the present application Figure 2 ;

[0032] Figure 3 A schematic diagram of the structure of an antenna device provided in an embodiment of the present application Figure 3;

[0033] Figure 4 A schematic diagram of an exemplary first current distribution provided in an embodiment of the present application;

[0034] Figure 5 A schematic diagram of an exemplary second current distribution provided in an embodiment of the present application;

[0035] Figure 6 An exemplary return loss diagram provided in an embodiment of the present application;

[0036] Figure 7 An exemplary transmission coefficient diagram provided in an embodiment of the present application;

[0037] Figure 8 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0039] The following will specifically describe the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems through embodiments and in conjunction with the accompanying drawings. The following embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0040] In addition, the technical solutions described in the embodiments of the present application can be arbitrarily combined without conflict.

[0041] An embodiment of the present application provides an antenna device. Figure 1 A schematic diagram of the structure of an antenna device provided in an embodiment of the present application Figure 1 .like Figure 1 As shown, in an embodiment of the present application, the antenna device 1 includes:

[0042] The radiator 10 is axially symmetrical.

[0043] A first feeding port 11 and a second feeding port 12, the first feeding port 11 and the second feeding port 12 are respectively connected to the radiator 10 and are separated by a preset distance; the preset distance is determined by the feeding form of the first feeding port 11 and the second feeding port 12;

[0044] The first feeding port 11 is used to feed an excitation signal into the radiator 10 to excite the radiator 10 to form a first current distribution;

[0045] The second feeding port 12 is used to feed an excitation signal into the radiator 10 to excite the radiator 10 to form a second current distribution;

[0046] The first current distribution and the second current distribution are orthogonal to each other, thereby suppressing the coupling effect between the first feeding port 11 and the second feeding port 12 .

[0047] It should be noted that in the embodiment of the present application, the radiator 10, that is, the antenna body, has an axisymmetric shape, specifically a shape with two axes of symmetry, and can be any of the following shapes: circular, rectangular, square, triangular, and star-shaped. Figure 1 As shown, the radiator 10 can be annular. Figure 2 and Figure 3 As shown, the radiator 10 may also be rectangular. The specific shape of the radiator 10 may be set according to actual needs and application scenarios, and is not limited in the embodiment of the present application.

[0048] It should be noted that in the embodiments of the present application, the first feeding port 11 and the second feeding port 12 are respectively connected to the radiator 10, with a preset distance between them. After the two feeding ports feed the excitation signal into the radiator 10, the excitation signal can form mutually orthogonal current distributions within the radiator 10. The preset distance between the two feeding ports is determined by the feeding method of the two feeding ports, which is described in detail below.

[0049] In the embodiment of the present application, when the feeding modes of the first feeding port 11 and the second feeding port 12 are both floor feeding or direct feeding, the preset distance between the first feeding port 11 and the second feeding port 12 is one quarter of the length of the radiator 10;

[0050] In the first feeding port 11 and the second feeding port 12 , when the feeding form of one feeding port is floor feeding and the feeding form of the other feeding port is direct feeding, the preset distance between the first feeding port 11 and the second feeding port 12 is half the length of the radiator 10 .

[0051] It should be noted that, in the embodiment of the present application, if the first feeding port 11 and the second feeding port 12 are both fed in the form of floor feeding or direct feeding, the first feeding port 11 and the second feeding port 12 only need to be separated by a quarter of the length of the radiator 10, so that after the two feeding ports feed the excitation signal into the radiator 10, a mutually orthogonal current distribution is formed in the radiator 10. If the feeding form of one feeding port in the first feeding port 11 and the second feeding port 12 is floor feeding and the feeding form of the other feeding port is floor feeding, then the first feeding port 11 and the second feeding port 12 are both fed in the form of floor feeding and direct feeding, then the first feeding port 11 and the second feeding port 12 are only fed in the form of floor feeding and direct feeding, then the first feeding port 11 and the second feeding port 12 are only fed in the form of floor feeding and direct feeding, then the first feeding port 11 and the second feeding port 12 are both ... respectively. For direct feeding, the distance between the first feeding port 11 and the second feeding port 12 needs to be increased by one-quarter of the length of the radiator 10, that is, the distance between the two feeding ports is half the length of the radiator 10, so that after the two feeding ports feed the excitation signal into the radiator 10, mutually orthogonal current distributions can be formed in the radiator 10. This is determined by the characteristics of the feeding form itself. Different feeding forms at the same position generate different current distributions. Therefore, in order to ensure the orthogonality of the current distribution, the spacing between the feeding ports needs to be designed according to the feeding form.

[0052] In the embodiments of the present application, Figure 1-Figure 3 As shown, the antenna device 1 further includes a metal floor 13 .

[0053] In the embodiments of the present application, Figure 1 and Figure 2 As shown, the first feeding port 11 and the second feeding port 12 are respectively connected to the metal floor 13, and the metal floor 13 is used to provide excitation signals for the first feeding port 11 and the second feeding port 12;

[0054] The first feeding port 11 and the second feeding port 12 are both fed in a floor-feeding manner. The preset distance between the first feeding port 11 and the second feeding port 12 is one quarter of the length of the radiator 10 .

[0055] It should be noted that, in the embodiments of the present application, Figure 1 and Figure 2As shown, the antenna device 1 may further include a metal floor 13, and the first feeding port 11 and the second feeding port 12 are both connected to the metal floor 13. Chips, circuits, etc. may be deployed on the metal floor 13 for generating an excitation signal and transmitting the excitation signal to the first feeding port 11 and the second feeding port 12. In this way, the feeding forms of the first feeding port 11 and the second feeding port 12 are both floor feeding. Accordingly, in order to ensure that the first feeding port 11 and the second feeding port 12 excite the radiator 10 to form mutually orthogonal current distributions, the first feeding port 11 and the second feeding port 12 need to be separated by one-quarter of the length of the radiator 10, wherein the positions of the first feeding port 11 and the second feeding port 12 can be set according to actual needs and application scenarios, and are not limited in the embodiments of the present application.

[0056] In the examples of this application, see Figure 3 , the antenna device 1 further includes: a metal floor 13 and a signal coaxial line (not shown in the figure);

[0057] Of the first feeding port 11 and the second feeding port 12, one feeding port is connected to the metal floor 13, which is used to provide an excitation signal to the connected feeding port. The other feeding port is provided on the radiator 10 and is connected to the signal coaxial line, which is used to transmit the input excitation signal to the connected feeding port.

[0058] Of the first feeding port 11 and the second feeding port 12, the feeding form of the feeding port connected to the metal floor 13 is floor feeding, and the feeding form of the feeding port connected to the signal coaxial line is direct feeding;

[0059] The preset distance between the first feeding port 11 and the second feeding port 12 is half the length of the radiator 10 .

[0060] It should be noted that, in the embodiment of the present application, the antenna device 1 may further include a metal floor 13 and a signal coaxial line, such as Figure 3As shown, in the first feeding port 11 and the second feeding port 12, the second feeding port is connected to the metal floor 13, and chips, circuits, etc. can be deployed on the metal floor 13 to generate excitation signals and transmit the excitation signals to the second feeding port. In this way, the feeding form of the second feeding port is floor feeding, and the first feeding port is directly opened on the radiator 10 and connected to the signal coaxial line. The signal coaxial line can receive the excitation signal and transmit it to the first feeding port. In this way, the feeding form of the first feeding port is direct feeding. Accordingly, in order to ensure that the first feeding port 11 and the second feeding port 12 excite the radiator 10 to form mutually orthogonal current distributions, the first feeding port 11 and the second feeding port 12 need to be separated by half the length of the radiator 10, wherein the positions of the first feeding port 11 and the second feeding port 12 can be set according to actual needs and application scenarios, and are not limited in the embodiments of the present application.

[0061] It should be noted that, in the embodiments of the present application, Figure 1-Figure 3 As shown, the metal floor 13 is arranged around the radiator 10, wherein Figure 1 As shown, the shape of the metal floor 13 can be a square shape, such as Figure 2 and Figure 3 As shown, the shape of the metal floor can also be a half-mouth shape. Of course, the metal floor 13 can also have other shapes and other relative positional relationships with the radiator 10. The specific position and shape of the metal floor 13 can be set according to actual needs and application scenarios, and are not limited in the embodiments of the present application.

[0062] In the embodiment of the present application, the antenna device 1 may further include: a first coaxial line (not shown in the figure) and a second coaxial line (not shown in the figure);

[0063] The first feeding port 11 and the second feeding port 12 are respectively provided on the radiator 10. The first feeding port 11 is connected to a first coaxial line, which is used to transmit the input excitation signal to the first feeding port 11. The second feeding port 12 is connected to a second coaxial line, which is used to transmit the input excitation signal to the second feeding port 12.

[0064] The feeding modes of the first feeding port 11 and the second feeding port 12 are both direct feeding. The preset distance between the first feeding port 11 and the second feeding port 12 is one quarter of the length of the radiator 10 .

[0065] It should be noted that, in an embodiment of the present application, the antenna device 1 may further include a first coaxial line and a second coaxial line, and the first feeding port 11 and the second feeding port 12 are both opened on the radiator 10, and each feeding port is connected to a coaxial line. The first coaxial line and the second coaxial line can receive the excitation signal and transmit it to the connected feeding port. In this way, the feeding form of the first feeding port 11 and the second feeding port 12 are both direct feeding. Accordingly, in order to ensure that the first feeding port 11 and the second feeding port 12 excite the radiator 10 to form mutually orthogonal current distributions, the first feeding port 11 and the second feeding port 12 need to be separated by one quarter of the length of the radiator 10, wherein the positions of the first feeding port 11 and the second feeding port 12 can be set according to actual needs and application scenarios, and are not limited in the embodiment of the present application.

[0066] In the embodiment of the present application, based on the design of the radiator 10, the first feeding port 11 and the second feeding port 12, Figure 1 In the structure of the antenna device 1 shown in FIG. 1 , when the first feeding port 11 excites the radiator 10, the first current distribution formed in the radiator 10 is as follows: Figure 4 As shown, when the second feeding port 12 excites the radiator 10, the second current distribution in the radiator 10 is as follows: Figure 5 As shown, the first current distribution and the second current distribution are orthogonal to each other, thereby suppressing the coupling effect between the first feeding port 11 and the second feeding port 12 , so that the first feeding port 11 and the second feeding port 12 have a higher isolation.

[0067] Figure 6 This is an exemplary return loss diagram provided in the embodiment of the present application. Figure 6 As shown, the curves shown in the figure represent the changes in the input return loss S11 and the output return loss S22 of the radiator 10. The communication frequency band of the radiator 10 can cover the Wi-Fi 5GHz (5.15GHz-5.85GHz) frequency band and transmit and receive radio frequency signals in this frequency band. The frequency band between points 1 and 2 marked in the figure is the covered frequency band.

[0068] Figure 7 This is an exemplary transmission coefficient diagram provided in the embodiment of the present application. Figure 7 As shown in the figure, the curve shown in the figure represents the changes in the forward transmission coefficient S21 and the reverse transmission coefficient S12 between the two feeding ports. If the transmission coefficient between the two feeding ports is less than -21dB within the covered frequency band, the isolation is greater than 21dB, that is, the isolation between the two feeding ports is high, which can support the sharing of the same radiator 10 to realize the transmission and reception of radio frequency signals.

[0069] An embodiment of the present application provides an antenna device, comprising: a radiator, the radiator being axially symmetrical; a first feed port and a second feed port, the first feed port and the second feed port being respectively connected to the radiator and separated by a preset distance; the preset distance being determined by the feeding form of the first feed port and the second feed port; the first feed port being used to feed an excitation signal into the radiator to excite the formation of a first current distribution in the radiator; the second feed port being used to feed an excitation signal into the radiator to excite the formation of a second current distribution in the radiator; the first current distribution and the second current distribution being orthogonal to each other, thereby suppressing the coupling effect between the first feed port and the second feed port. In the antenna device provided in the embodiment of the present application, the two feed ports can share the same radiator, and the structure is simple, thereby saving deployment space. In addition, the two feed ports can excite the radiator to form orthogonal current distributions, so that the two feed ports have high isolation.

[0070] An embodiment of the present application also provides an electronic device. Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 8 As shown, in an embodiment of the present application, the electronic device 2 includes the above-mentioned antenna device 1 .

[0071] It should be noted that in an embodiment of the present application, the electronic device 2 may further include: a shell; at least part of the antenna device 1 is arranged inside the shell, or at least part of the antenna device 1 is arranged outside the shell, or at least part of the antenna assembly is integrated with the shell.

[0072] It will be appreciated that in the embodiments of the present application, the antenna device 1 includes a radiator 10, which can be integrated with the housing, for example, as part of the metal frame of the housing. Furthermore, the metal floor 13 included in the antenna device 1 can be encapsulated within the housing. The specific structural relationship between the antenna device 1 and the housing can be determined based on actual needs and application scenarios, and is not limited in the embodiments of the present application.

[0073] It should be noted that in the embodiment of the present application, the electronic device 2 may further include components such as a speaker, a display, a camera, and a battery to implement corresponding functions. The specific other components included in the electronic device 2 can be set according to actual needs and application scenarios, and are not limited in the embodiment of the present application.

[0074] It should be noted that in the embodiment of the present application, the electronic device 2 may specifically be a mobile phone, tablet computer, or other device that requires an antenna device 1 to support communication. The specific type of the electronic device 2 is not limited in the embodiment of the present application.

[0075] It can be understood that in the embodiment of the present application, since the two feeding ports of the antenna device 1 can share the same radiator 10, the deployment space of the antenna device 1 in the electronic device 2 can be saved, and the two feeding ports can excite the radiator 10 to form an orthogonal current distribution, so that the two feeding ports have high isolation, thereby enabling the electronic device 2 to have higher communication quality.

[0076] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An antenna device, characterized in that: include: A radiator, wherein the radiator is axially symmetrical and has a ring structure; a first feeding port and a second feeding port, wherein the first feeding port and the second feeding port are respectively connected to the radiator and are separated by a preset distance; the preset distance is determined by the feeding form of the first feeding port and the second feeding port; the preset distance is the length of the radiator between the first feeding port and the second feeding port; The first feeding port is used to feed an excitation signal into the radiator to excite the radiator to form a first current distribution; The second feeding port is used to feed the excitation signal into the radiator to excite the radiator to form a second current distribution; The first current distribution and the second current distribution are orthogonal to each other, suppressing the coupling effect between the first feeding port and the second feeding port; When the feeding modes of the first feeding port and the second feeding port are both floor feeding or direct feeding, the preset distance between the first feeding port and the second feeding port is one quarter of the circumference of the radiator; In the case where the feeding form of one of the first feeding port and the second feeding port is floor feeding and the feeding form of the other feeding port is direct feeding, the preset distance between the first feeding port and the second feeding port is half of the circumference of the radiator.

2. The antenna device according to claim 1, wherein The antenna device further includes: a metal floor; The first feeding port and the second feeding port are respectively connected to the metal floor, and the metal floor is used to provide the excitation signal to the first feeding port and the second feeding port; The feeding forms of the first feeding port and the second feeding port are both floor feeding, and the preset distance between the first feeding port and the second feeding port is one quarter of the circumference of the radiator.

3. The antenna device according to claim 1, wherein The antenna device further comprises: a metal floor and a signal coaxial line; Of the first feeding port and the second feeding port, one feeding port is connected to the metal floor, and the metal floor is used to provide the excitation signal to the connected feeding port; the other feeding port is opened on the radiator and connected to the signal coaxial line, and the signal coaxial line is used to transmit the input excitation signal to the connected feeding port; Of the first feeding port and the second feeding port, the feeding form of the feeding port connected to the metal floor is floor feeding, and the feeding form of the feeding port connected to the signal coaxial line is direct feeding; The preset distance between the first feeding port and the second feeding port is half of the circumference of the radiator.

4. The antenna device according to claim 1, wherein The antenna device further comprises: a first coaxial line and a second coaxial line; The first feeding port and the second feeding port are respectively provided on the radiator, the first feeding port is connected to the first coaxial line, and the first coaxial line is used to transmit the input excitation signal to the first feeding port, and the second feeding port is connected to the second coaxial line, and the second coaxial line is used to transmit the input excitation signal to the second feeding port; The feeding forms of the first feeding port and the second feeding port are both direct feeding, and the preset distance between the first feeding port and the second feeding port is one quarter of the circumference of the radiator.

5. The antenna device according to claim 2 or 3, characterized in that The metal floor is arranged around the radiator.

6. The antenna device according to claim 5, characterized in that The metal floor is in a square shape or a half square shape.

7. The antenna device according to claim 1, wherein The shape of the radiator is any one of the following shapes: circular, rectangular, square, triangular, and star-shaped.

8. An electronic device, characterized in that: The electronic device comprises the antenna device according to any one of claims 1 to 7.

9. The electronic device according to claim 8, wherein: The electronic device further includes: a housing; at least a portion of the antenna device is disposed inside the housing, or at least a portion of the antenna device is disposed outside the housing, or at least a portion of the antenna device is integrated with the housing.

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