WO2023151393A1

WO2023151393A1 - Antenna apparatus and electronic device

Info

Publication number: WO2023151393A1
Application number: PCT/CN2022/140489
Authority: WO
Inventors: 雍征东
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-02-08
Filing date: 2022-12-20
Publication date: 2023-08-17
Also published as: CN116613508A

Abstract

An antenna apparatus and an electronic device. A ground plane comprises a first edge and a second edge having different extension directions, the first edge being provided with a first ground point, and the second edge being provided with a second ground point. An antenna unit is arranged opposite to the first edge and is electrically connected to the first ground point, and transmits a first wavelength signal under the action of a first excitation signal provided by a first feed. A first conductor structure is arranged opposite to the second edge and is electrically connected to the second ground point, so as to reduce directivity of the antenna unit transmitting the first wavelength signal.

Description

Antenna devices and electronic equipment

This application claims the priority of the Chinese patent application with the application number 202210118517.5 and the title of the invention "antenna device and electronic equipment" submitted to the China Patent Office on February 08, 2022, the entire contents of which are incorporated in this application by reference.

technical field

The present application relates to the technical field of communications, and in particular to an antenna device and electronic equipment.

Background technique

With the development of communication technology, electronic devices such as smart phones can realize more and more functions, and the communication modes of electronic devices are also more diversified. For example, an electronic device may implement functions such as cellular communication, wireless fidelity (WIreless Fidelity, Wi-Fi for short) communication, and the like.

Contents of the invention

The present application provides an antenna device and electronic equipment, which can reduce the directivity of the antenna device.

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

A ground plane, including a first side and a second side with different extending directions, the first side is provided with a first ground point, and the second side is provided with a second ground point;

An antenna unit, arranged opposite to the first side, the antenna unit is electrically connected to the first ground point;

A first feed source, electrically connected to the antenna unit, the first feed source is used to provide a first excitation signal, so that the antenna unit transmits a first wavelength signal; and

The first conductor structure is disposed opposite to the second side, and the first conductor structure is electrically connected to the second ground point for reducing the directivity of the antenna unit transmitting the first wavelength signal.

In a second aspect, the present application provides an electronic device, including an antenna device, and the antenna device includes:

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative efforts.

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

FIG. 2 is a schematic diagram of the antenna device shown in FIG. 1 without a first conductor structure.

FIG. 3 is a radiation pattern diagram when the antenna unit of the antenna device shown in FIG. 2 is arranged in different positions.

FIG. 4 is another schematic diagram of the antenna device shown in FIG. 1 without a first conductor structure.

FIG. 5 is a radiation pattern when the antenna unit of the antenna device shown in FIG. 4 is arranged in different positions.

FIG. 6 is a radiation pattern diagram when the antenna unit of the antenna device shown in FIG. 1 is arranged in different positions.

FIG. 7 is a radiation pattern diagram when the first conductor structure of the antenna device shown in FIG. 1 is disposed at different positions.

FIG. 8 is a schematic diagram of a second structure of an antenna device provided by an embodiment of the present application.

FIG. 9 is a schematic diagram of a third structure of an antenna device provided by an embodiment of the present application.

FIG. 10 is a radiation pattern diagram when the first conductor structures of the antenna device shown in FIG. 1 have different lengths.

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

FIG. 12 is a schematic diagram of a fifth structure of the antenna device provided by the embodiment of the present application.

FIG. 13 is a schematic diagram of a sixth structure of an antenna device provided by an embodiment of the present application.

FIG. 14 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with accompanying drawings 1 to 14 in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

An embodiment of the present application provides an antenna device 100, and the antenna device 100 can implement a wireless communication function. For example, the antenna device 100 can transmit Wi-Fi signals, Global Positioning System (Global Positioning System, GPS) signals, third-generation mobile communication technology (3rd-Generation, referred to as 3G), fourth-generation mobile communication technology (4th-Generation, 4G for short), fifth-generation mobile communication technology (5th-Generation, 5G for short), near field communication (Near field communication, NFC for short) signal, Bluetooth (Blue tooth, BT for short) signal, Ultra Wideband communication (Ultra WideBand, short for UWB) signal, etc.

Please refer to FIG. 1 , which is a schematic diagram of a first structure of an antenna device 100 provided in an embodiment of the present application. The antenna device 100 includes a ground plane 110 , an antenna unit 120 , a first feed 130 and a first conductor structure 140 .

The ground plane 110 may form a common ground. The ground plane 110 may be formed by a conductor, a printed circuit, or a metal printed layer in the antenna device 100 . For example, the ground plane 110 can be formed on the antenna device 100 or the main board or small board of the electronic device, the ground plane 110 can also be formed on the frame of the antenna device 100 or the electronic device, and the ground plane 110 can also be formed on the antenna device 100 or on the housing of the electronic device.

The ground plane 110 may include a first side 101 and a second side 102 extending in different directions. The first side 101 may extend toward a first direction H1, and the second side 102 may extend toward a second direction H2. The first direction H1 may Different from the second direction H2, so that the first side 101 or its extension can intersect the second side 102 or its extension, the first side 101 can be directly or indirectly connected to the second side 102 . The second side 102 may include a first end 1021 and a second end 1022 that are oppositely disposed. The first end 1021 may extend toward the direction where the first side 101 is located and be close to the side where the first side 101 is located. The first end 1021 may be It is connected with the first side 101; the second end 1022 can extend away from the direction where the first side 101 is located. Wherein, a first grounding point 111 may be provided on the first side 101 , and a second grounding point 112 may be provided on the second side 102 .

The antenna unit 120 can be arranged relative to the first side 101 , so that the projection of the antenna unit 120 on the ground plane 110 can be located on the first side 101 . The antenna unit 120 may be provided with a first free end 121, a first feed end 122 and a first ground end 123 spaced apart from each other, and the first feed end 122 may be located between the first free end 121 and the first ground end 123, The first ground terminal 123 can be electrically connected to the first ground point 111 on the first side 101 of the ground plane 110 , so that the antenna unit 120 can be grounded through the first ground terminal 123 and the first ground point 111 .

The first feed source 130 may be directly or indirectly electrically connected to the antenna unit 120 , for example, the first feed source 130 may be directly or indirectly electrically connected to the first feed end 122 of the antenna unit 120 . The first feed source 130 may provide a first excitation signal to the antenna unit 120, and the first excitation signal may excite the antenna unit 120 to form a first resonance and transmit a first wireless signal of a first wavelength.

It can be understood that the first wireless signal of the first wavelength may be, but not limited to, a Wi-Fi signal. For example, it may be a 2.4G Wi-Fi signal, or may be a 5G Wi-Fi signal. Certainly, the first wireless signal of the first wavelength may also be a signal of another frequency band, which is not limited in this embodiment of the present application.

It can be understood that the antenna device 100 may further include a tuning circuit (not shown in the figure) and a filter circuit (not shown in the figure), and the tuning circuit and the filtering circuit may perform tuning and filtering on the first wireless signal provided by the first feed source 130, So that the antenna unit 120 can transmit the first wireless signal.

The first conductor structure 140 can be disposed opposite to the second side 102 , so that the projection of the first conductor structure 140 on the ground plane 110 can be located on the second side 102 . The first conductor structure 140 may include a second free end 141 and a second ground end 142 disposed at intervals, and the second free end 141 may be disposed away from the second ground end 142 and the antenna unit 120 toward the second direction H2 . The second ground terminal 142 can be electrically connected to the second ground point 112 on the second side 102 of the ground plane 110, and the antenna unit 120 can be grounded through the second ground terminal 142 and the second ground point 112 to reduce the transmission of the antenna unit 120. The directivity of the first wireless signal at the first wavelength.

Wherein, the first excitation signal provided by the first feed source 130 can flow to the ground plane 110 through the first ground terminal 123 of the antenna unit 120 and the first ground point 111 of the ground plane 110, and the first excitation signal can also flow from the first ground plane 110 to the ground plane 110. The two ground points 112 and the second ground terminal 142 are coupled to the first conductor structure 140, and the first conductor structure 140 can reduce the directivity of the antenna unit 120 for transmitting the first wavelength signal.

It can be understood that the directivity of the antenna may refer to the radiation or reception capability of the antenna to different directions in space. The directivity of the antenna is opposite to the omnidirectionality of the antenna. The omnidirectionality of the antenna means that the radiation or receiving ability of the antenna in different directions in space is relatively uniform. At this time, the antenna has no directionality. For example, when the directivity of the antenna in a certain direction is greater, the radiation or receiving capability of the antenna in the direction is stronger, and the omnidirectionality of the antenna is weaker. When the directivity of the antenna is large, it is easier to trigger a power backoff event during the antenna test, thereby affecting the radiation performance of the antenna.

When the antenna unit 120 and the first conductor structure 140 are respectively electrically connected to the ground plane 110 to achieve grounding, the first conductor structure 140 can change the current distribution of the excitation signal provided by the first feed source 130 on the ground plane 110, the first conductor The structure 140 may form a notch structure (for example, a first notch structure) to reduce the directivity of the antenna unit 120 to transmit the first wavelength signal. It can be understood that the notch structure can destroy the original resonance of the antenna unit 120 at a certain frequency point in the working frequency band when the notch structure is not set, so that the antenna unit 120 cannot work normally at this frequency point, and the notch structure can The phase of the antenna unit 120 at a certain frequency point is changed to reduce the directivity of the antenna unit 120 .

For example, please refer to FIG. 2 and FIG. 3. FIG. 2 is a schematic diagram of the antenna device 100 shown in FIG. 1 without the first conductor structure 140, and FIG. Radiation pattern at different positions. When the antenna device 100 does not include the first conductor structure 140 and the antenna unit 120 is arranged relative to the first side 101 of the ground plane 110, the first ground terminal 123 of the antenna unit 120 is electrically connected to the first ground point 111 of the ground plane 110 to achieve Grounding, at this time, there is no first conductor structure 140 to change the distribution of the excitation current provided by the feed on the ground plane 110 . As shown in Figure 3, the first picture in Figure 3 is the radiation pattern of the antenna unit 120 when the first grounding point 111 is set at the center point A of the first side 101; the second picture in Figure 3 is the first grounding point The radiation pattern of the antenna unit 120 when 111 is arranged 20 mm (A-20) below the center point of the first side 101; the third figure in FIG. 3 shows that the first ground point 111 is arranged below the center point of the first side 101 The radiation pattern of the antenna unit 120 at 40 millimeters (A-40); the fourth figure in FIG. 3 is the antenna unit 120 when the first ground point 111 is arranged 70 millimeters below the center point of the first side 101 (A-70) radiation pattern; the fifth figure in Fig. 3 is the radiation pattern of the antenna unit 120 when the first grounding point 111 is arranged at 20 millimeters (A+20) above the center point of the first side 101; the sixth figure in Fig. 3 The figure shows the radiation pattern of the antenna unit 120 when the first grounding point 111 is set 40 mm (A+40) above the center point of the first side 101 . It can be seen from FIG. 2 and FIG. 3 that when the antenna device 100 is not provided with the first conductor structure 140 and the antenna unit 120 returns to the ground through the first ground point 111 provided on the first side 101, the antenna unit 120 passes through the first ground point 111 located at the center of the first side 101. The minimum directivity of the first ground point 111 is about 2.674dBi when returning to ground. There is still room for improvement in this directionality.

For another example, please refer to FIG. 4 and FIG. 5, FIG. 4 is another schematic diagram of the antenna device 100 shown in FIG. 1 without the first conductor structure 140, and FIG. 5 is the antenna of the antenna device 100 shown in FIG. The radiation pattern of the unit 120 is set at different positions. When the antenna device 100 does not include the first conductor structure 140 and the antenna unit 120 is arranged relative to the second side 102 of the ground plane 110, the first ground point 111 of the ground plane 110 is correspondingly arranged on the second side 102, and the antenna unit 120 The first ground end 123 of the antenna unit 120 is electrically connected to the first ground point 111 to achieve grounding, and the first free end 121 of the antenna unit 120 extends away from the first side 101. At this time, there is no first conductor structure 140 to change the feed provided by The distribution of excitation current on the ground plane 110 . As shown in Figure 5, the first figure in Figure 5 is the radiation pattern of the antenna unit 120 when the first grounding point 111 is arranged on the second side 102 close to the end point B (first end 1021) of the first side 101; Figure 5 The second picture in the figure is the radiation pattern of the antenna unit 120 when the first grounding point 111 is arranged on the second side 102 close to the right side of the end point B of the first side 101 15 mm (B+15); the third picture in Fig. 5 The radiation pattern of the antenna unit 120 when the first grounding point 111 is arranged on the second side 102 close to the right side of the end point B of the first side 101 30 mm (B+30); the fourth picture in Fig. 5 is the first grounding point 111 is the radiation pattern of the antenna unit 120 when the second side 102 is close to the end point B of the first side 101 and is 45 mm to the right (B+45). It can be seen from FIG. 4 and FIG. 5 that when the antenna device 100 is not provided with the first conductor structure 140 and the antenna unit 120 returns to the ground through the first ground point 111 provided on the second side 102, the antenna unit 120 passes through the center of the second side 102. The directivity of the first grounding point 111 close to the first side 101 (the left side of the second side 102 center point) is smaller than the directivity when the point is far away from the first side 101 (the second side 102 center point right side) by being located at the second side 102 center point. ) when the first grounding point 111 returns to the ground, the minimum directivity of the antenna unit 120 is about 2.838dBi. There is still room for improvement in this directionality.

For another example, please refer to FIG. 6 and FIG. 7 in conjunction with FIG. 1. FIG. 6 is a radiation pattern when the antenna unit 120 of the antenna device 100 shown in FIG. The radiation pattern of the antenna device 100 when the first conductor structure 140 is disposed at different positions. As shown in FIGS. 1 and 6, when the antenna device 100 includes the antenna unit 120 and the first conductor structure 140 at the same time, the first figure in FIG. 6 shows that the first conductor structure 140 is located at the end B of the second side 102 (the first One end 1021) and the radiation pattern of the antenna device 100 when the antenna unit 120 returns to the ground through the first ground point 111 arranged at the center point A of the second side 102; the second figure in FIG. 6 is the first conductor structure 140 The radiation pattern of the antenna device 100 when the end B of the second side 102 is located and the antenna unit 120 returns to the ground through the first ground point 111 arranged at 20 millimeters (A-20) below the center point A of the second side 102; FIG. The third figure in 6 shows that the first conductor structure 140 is located at the end B of the second side 102 and the antenna unit 120 passes through the first grounding point 111 which is 40 mm (A-40) below the center point A of the second side 102 The radiation pattern of the antenna device 100 when returning to the ground. As shown in FIG. 1 and FIG. 7, the first picture in FIG. 7 shows that the antenna unit 120 returns to the ground through the first ground point 111 set at 40 mm below the center point A of the second side 102 (A-40). The radiation pattern of the antenna device 100 when a conductor structure 140 is located 15 mm to the right of the end B of the second side 102 close to the first side 101; the second diagram in FIG. 102 Antenna device 100 when the first grounding point 111 40 mm below the central point A (A-40) returns to the ground and the first conductor structure 140 is located 35 mm to the right of the end B of the second side 102 close to the first side 101 radiation pattern. It can be seen from FIG. 6 and FIG. 7 that when the antenna device 100 includes the antenna unit 120 and the first conductor structure 140 at the same time, the minimum directivity of the antenna device 100 is about 2.157dBi, which is much lower than that shown in FIG. 2 to FIG. The directivity of the antenna unit 120 is lower after the antenna device 100 of the embodiment of the present application is provided with the first conductor structure 140 , and the antenna device 100 is less likely to trigger a power backoff event.

Based on the above description, in the antenna device 100 of the embodiment of the present application, the antenna unit 120 and the first conductor structure 140 are respectively arranged relative to the first side 101 and the second side 102 of the ground plane 110, and the first conductor structure 140 can change the first feed source The current distribution of the excitation signal provided by 130 on the ground plane 110, the first conductor structure 140 can make the part of the current originally concentrated on the side of the first side 101 flow to the second side 102, the first conductor structure 140 can be formed on the second side The pattern on one side of the two sides 102, the pattern is complementary to the pattern formed by the antenna unit 120 so that the pattern formed by the antenna device 100 is more uniform, so that the first conductor structure 140 can reduce the transmission of the first wavelength signal by the antenna unit 120 The directivity makes the directivity of the whole antenna device 100 lower, the antenna device 100 is less likely to trigger a power backoff event, and the radiation performance of the antenna device 100 is better.

Wherein, please refer to FIG. 6 and FIG. 7 again and please refer to FIG. 8 . FIG. 8 is a second structural schematic diagram of the antenna device 100 provided by the embodiment of the present application. When the antenna unit 120 and the first conductor structure 140 return to the ground through the first ground point 111 and the second ground point 112 respectively, the distance λ between the first ground point 111 and the second ground point 112 can affect the direction of the antenna device 100 sex. It can be understood that when the distance λ between the first ground point 111 and the second ground point 112 is about the first wavelength, the first conductor structure 140 can greatly reduce the directivity of the antenna unit 120 to transmit the signal of the first wavelength. For example, in the antenna device 100 shown in FIGS. 1 to 8 , when the first wavelength signal transmitted by the antenna unit 120 is a 2.4G Wi-Fi signal and the length of the first side 101 is about 140 mm, and the length of the second side 102 When the length is about 70 mm, when the first ground point 111 is located 40 mm below the center point A of the first side 101 (A-40) and the second ground point 112 is located near the end point B of the second side 102 close to the first side 101 (For example, when the second ground point 112 is 15 mm to the right of the end point B), the distance λ between the first ground point 111 and the second ground point 112 along the edge of the ground plane 110 is approximately the distance of the first wavelength, and the first excitation The phase formed by the current on the first conductor structure 140 is in the same direction as the phase formed on the antenna unit 120, the direction pattern formed by the first conductor structure 140 and the direction pattern formed by the antenna unit 120 can be more complementary, and the first conductor structure 140 is more It is easy to lower the directivity of the antenna device 100 .

It can be understood that, in the above embodiments of the present application, the length of the first side 101 may be greater than the length of the second side 102 so that the first side 101 is the long side of the ground plane 110 and the second side 102 is the short side of the ground plane 110. side. When the user is in a Wi-Fi scene and holds the antenna device 100 or the electronic device horizontally, the user is not easy to cover the antenna unit 120 , and the antenna unit 120 may have better radiation performance.

Of course, in actual use, the length of the second side 102 can also be set to be greater than the length of the first side 101. At this time, the first grounding point 111 and the The second ground point 112, so that when the distance between the first ground point 111 and the second ground point 112 is about the first wavelength, the antenna device 100 has low directivity. This embodiment of the present application does not limit it.

It can be understood that, in the embodiment of the present application, the distance λ between the first ground point 111 and the second ground point 112 can be approximately equal to the first wavelength, and the two can fluctuate up and down within a certain range, so that the first wavelength The phase formed by an excitation current on the first conductor structure 140 is in the same direction as the phase formed on the antenna unit 120 . Considering that the effective electrical length of the antenna unit 120 and the first conductor structure 140 can be increased or decreased by setting structures such as inductance and capacitance, the distance can fluctuate up and down within a certain range of the first wavelength, so that the first excitation signal The phase formed on a conductor structure 140 is in the same direction as the phase formed on the antenna unit 120 by the first excitation signal. The embodiment of the present application does not limit the specific value of the distance between the first ground point 111 and the second ground point 112 .

Wherein, please refer to FIG. 7 again and refer to FIG. 9 . FIG. 9 is a schematic diagram of a third structure of the antenna device 100 provided by the embodiment of the present application. When the first distance L1 between the second ground point 112 and the first end 1021 of the second side 102 is less than the second distance L2 between the second ground point 112 and the second end 1022 of the second side 102, the second ground point 112 is located on the second side 102 close to the first side 101 (near the antenna unit 120), the first conductor structure 140 returns to the ground through the second ground point 112 and the antenna unit 120 passes through the first ground point 111 on the first side 101 When returning to ground, the first excitation current is more likely to be coupled to the first conductor structure 140, and it is easier to form a radiation pattern complementary to that of the antenna unit 120 on the first conductor structure 140, and it is easier for the first conductor structure 140 to lower the antenna device 100. directionality.

Wherein, please refer to FIG. 1 to FIG. 9 again, the first conductor structure 140 may extend in a direction away from the antenna unit 120 . The second ground end 142 of the first conductor structure 140 can be electrically connected to the second ground point 112, and the second free end 141 of the first conductor structure 140 can extend toward the direction where the second end 1022 of the second side 102 is located and away from the second ground point 112. One side 101 is away from the antenna unit 120 , and the first conductor structure 140 may extend in a direction away from the first side 101 . Therefore, the first conductor structure 140 can form a structure with openings facing away from the first side 101 . At this time, on the one hand, the directional pattern formed by the first conductor structure 140 can extend toward a direction away from the first side 101, and the directional pattern formed by the first conductive structure 140 can be more easily complementary to the directional pattern formed by the antenna unit 120, so that The radiation capability of the antenna device 100 in different directions is more uniform, and the directivity of the antenna device 100 is lower; on the other hand, the first conductor structure 140 extends toward the direction where the second end 1022 of the second side 102 is located, and the first conductor structure 140 will not additionally extend the length of the antenna device 100 on the second side 102, and the size of the antenna device 100 will not be too large.

It can be understood that the first conductor structure 140 may be parallel to the second side 102 and extend away from the first side 101; direction extension. This embodiment of the present application does not limit this. Of course, the first conductor structure 140 can also extend toward the direction where the antenna unit 120 is located. At this time, the distance between the first conductor structure 140 and the antenna unit 120 can be adjusted so that The directivity of the antenna device 100 is small. The embodiment of the present application does not specifically limit the specific orientation of the first conductor structure 140 .

Wherein, please refer to FIG. 1 to FIG. 9 again, the antenna unit 120 may extend toward the direction of the first conductor structure 140 . The first ground end 123 of the antenna unit 120 may be electrically connected to the first ground point 111 of the ground plane 110, and the first free end 121 of the antenna unit 120 may extend in a direction away from the first ground end 123 and toward the first conductor structure 140 and the direction in which the second side 102 is located, so that the first free end 121 can be located between the first ground end 123 and the first conductor structure 140 . At this time, on the one hand, the distance between the antenna unit 120 and the first conductor structure 140 is relatively short, and the first conductor structure 140 is more likely to couple with the first excitation current on the ground plane 110 to form a trap structure; on the other hand, The radiation pattern formed by the antenna unit 120 and the radiation pattern formed by the first conductor structure 140 are more likely to complement each other, so that it is easier to reduce the directivity of the antenna device 100 .

It can be understood that the antenna unit 120 may be parallel to the first side 101 and extend toward the direction of the second side 102 , or may not be parallel to the first side 101 but extend toward the direction of the second side 102 . This embodiment of the present application does not limit it. Certainly, the antenna unit 120 may also not extend toward the direction of the second side 102 . For example, the antenna unit 120 may extend away from the second side 102 and away from the first conductor structure 140 . At this time, the directivity of the antenna device 100 formed by the first conductor structure 140 and the antenna unit 120 can be reduced by adjusting the distance between the antenna unit 120 and the first conductor structure 140 . The embodiment of the present application does not specifically limit the specific orientation of the antenna unit 120 .

Wherein, the length of the first conductor structure 140 may affect the directivity of the first conductor structure 140 to transmit the first wavelength signal to the antenna unit 120 . For example, please refer to FIG. 10 . FIG. 10 is a radiation pattern when the first conductor structure 140 of the antenna device 100 shown in FIG. 1 has different lengths. The first figure in FIG. 10 is the direction diagram of the antenna device 100 when the length D of the first conductor structure 140 is 17 millimeters; the second figure in FIG. 10 is the antenna device 100 when the length D of the first conductor structure 140 is 18 millimeters directional diagram; the third diagram in Fig. 10 is the directional diagram of the antenna device 100 when the length D of the first conductor structure 140 is 19 millimeters; the fourth diagram in Fig. 10 is that the length D of the first conductor structure 140 is 20 millimeters The directivity diagram of the antenna device 100 is shown in FIG. It can be seen from FIG. 10 that when the antenna unit 120 transmits the first wireless signal of the first wavelength, the first conductor structure 140 can work in the same frequency band as the antenna unit 120, and the first conductor structure 140 can be stimulated by the first excitation signal. A quarter-wavelength resonant mode is formed, and the effective electrical length of the first conductor structure 140 is about a quarter of the medium wavelength (square root of wave velocity/frequency/permittivity, in this application, when the antenna unit 120 transmits 2.4 G Wi-Fi signal, the effective electrical length of the first conductor structure 140 can be about 19 mm as shown in the third figure in Figure 10), at this time, the directivity of the antenna device 100 can be 2.053dBi, A conductor structure 140 can greatly reduce the directivity of the antenna device 100 .

It can be understood that when the first conductor structure 140 is not electrically connected to circuit devices such as inductors and capacitors, the effective electrical length of the first conductor structure 140 can be equivalent to its physical length, and the effective electrical length of the first conductor structure 140 can be equal to its second The distance between the two ground ends 142 and the second free end 141 . When the first conductor structure 140 is electrically connected to circuit devices such as inductance and capacitance that can increase or decrease its effective electrical length, the effective electrical length of the first conductor structure 140 can be greater than or less than its physical length, so that the first conductor structure 140 A quarter-wavelength resonant mode can be formed. The embodiment of the present application does not limit the specific physical length of the first conductor structure 140 .

The effective electrical length of the first conductor structure 140 in the embodiment of the present application is about a quarter of the medium wavelength, and the first conductor structure 140 can excite a quarter-wavelength resonant mode, and the first conductor structure 140 can better The directivity of the antenna unit 120 is reduced.

Wherein, when the antenna unit 120 transmits the first wireless signal of the first wavelength, it may form a quarter-wavelength resonant mode, and the effective electrical length of the antenna unit 120 may also be about a quarter of the medium wavelength. At this time, it is easier for the antenna unit 120 to excite resonance to transmit the first wireless signal of the first wavelength, and the radiation performance of the antenna unit 120 is better.

Wherein, please refer to FIG. 11 , which is a schematic diagram of a fourth structure of the antenna device 100 provided by the embodiment of the present application. The antenna arrangement 100 may further comprise a second feed 150 .

The second feed 150 may be directly or indirectly electrically connected to the first conductor structure 140 . For example, the first conductor structure 140 may also be provided with a second feed end 143 , and the second feed source 150 may be electrically connected to the second feed end 143 . The second feed source 150 may provide a second excitation signal, and when the second feed source 150 feeds the first excitation signal into the first conductor structure 140 , the first conductor structure 140 may transmit a second wireless signal of a second wavelength.

It can be understood that the second wireless signal may be different from the first wireless signal. For example, the frequency of the second wireless signal may be different from the frequency of the first wireless signal, such that the second wavelength of the second wireless signal may be different from the first wavelength of the first wireless signal.

It can be understood that the second feed source 150 can work simultaneously with the first feed source 130, so that the antenna unit 120 can transmit the first wireless signal, the first conductor structure 140 can transmit the second wireless signal, and the first conductor structure 140 can also transmit the second wireless signal. A notch structure of the antenna unit 120 may be formed, and the first conductor structure 140 implements multiplexing. Of course, the second feed source 150 may not work simultaneously with the first feed source 130. At this time, the first conductor structure 140 may serve as the trapping structure of the antenna unit 120, or the first conductor structure 140 may transmit the second wireless signal independently. Signal.

In the antenna device 100 of the embodiment of the present application, the first conductor structure 140 is electrically connected to the second feed source 150, and the first conductor structure 140 can transmit wireless signals alone or can be used as a trap structure of the antenna unit 120. The first conductor structure 140 Multiplexing can be realized, and the antenna device 100 can realize a miniaturized design.

Wherein, please refer to FIG. 12 , which is a schematic diagram of a fifth structure of the antenna device 100 provided by the embodiment of the present application. The antenna arrangement 100 may further comprise a second conductor structure 160 .

The second conductor structure 160 may be disposed on a side of the ground plane 110 extending in a direction different from that of the first side 101 . For example, as shown in Figure 12, the ground plane 110 can be a rectangular structure, and the ground plane 110 can also include a third side 103 and a fourth side 104, the third side 103 can be arranged opposite to the second side 102, and the fourth side 104 can be Set opposite to the first side 101 , the first side 101 , the second side 102 , the fourth side 104 and the third side 103 may enclose in sequence to form a rectangular structure. The second conductor structure 160 can be arranged opposite to the third side 103, and the projection of the second conductor structure 160 on the ground plane 110 can be located on the third side 103, so that the antenna unit 120, the first conductor structure 140, the second conductor structure 160 They can be respectively disposed on different sides of the ground plane 110 . Of course, the second conductor structure 160 may also be disposed on other sides such as the second side 102 , and in this case, both the first conductor structure 140 and the second conductor structure 160 are located on the second side 102 . The embodiment of the present application does not limit the specific location of the second conductor structure 160 .

It can be understood that a third ground terminal 161 may be provided on the second conductor structure 160, a third ground point 113 may be provided on the third side 103 of the ground plane 110, and the second conductor structure 160 such as the third ground terminal 161 may be Electrically connected to the third ground point 113 to reduce the directivity of the first wireless signal transmitted by the antenna unit 120 at the first wavelength. When the first excitation signal provided by the first feed source 130 can flow into the ground plane 110 through the first ground terminal 123 of the antenna unit 120 and the first ground point 111 of the ground plane 110, the first excitation signal can also flow from the third The ground point 113 and the third ground terminal 161 are coupled to the second conductor structure 160, and the second conductor structure 160 can form a notch structure (for example, a second notch structure) to reduce the transmission of the first wireless signal of the first wavelength by the antenna unit 120. directionality.

It can be understood that, based on the above-mentioned description between the first ground point 111 and the second ground point 112, the distance between the third ground point 113 and the first ground point 111 can also be about the first wavelength, so as to further make the second ground point 113 The two-conductor structure 160 can reduce the directivity of the antenna device 100 .

It can be understood that, like the first conductor structure 140, the second conductor structure 160 can also extend away from the antenna unit 120, so that the radiation pattern formed by the second conductor structure 160 can be further complementary to that of the first conductor structure 140. This makes the radiation pattern of the antenna device 100 more uniform.

It can be understood that when the antenna unit 120 transmits the first wireless signal of the first wavelength, the second conductor structure 160 can also form a quarter-wavelength resonant mode, and the effective electrical length of the second conductor structure 160 can also be a quarter of the wavelength of the medium.

It can be understood that please refer to FIG. 13 , which is a schematic diagram of a sixth structure of an antenna device provided by an embodiment of the present application. Like the first conductor structure 140, the antenna device 100 may further include a third feed source 170, and the third feed source 170 may be electrically connected to the second conductor structure 160, so that the second conductor structure 160 can transmit a third signal of a third wavelength. wireless signal. The second conductor structure 160 can be used as a trapping structure of the antenna unit 120, or can transmit wireless signals independently, and the second conductor structure 160 can realize multiplexing.

The antenna device 100 of the embodiment of the present application is provided with two notch structures, the first conductor structure 140 and the second conductor structure 160, and the first conductor structure 140, the second conductor structure 160 and the antenna unit 120 are respectively arranged on different sides of the ground plane 110. On the side, therefore, the first conductor structure 140 and the second conductor structure 160 can better complement the radiation pattern of the antenna unit 120 so that the radiation pattern formed by the antenna device 100 is more uniform, and the directivity of the antenna device 100 is more Low.

It should be noted that the first conductor structure 140 and the second conductor structure 160 of the present application may be elongated radiating stub structures as shown in FIGS. 1 to 12 , or may be other structures. For example, the first conductor structure 140 and the second conductor structure 160 may be, but not limited to, L-shaped, U-shaped, or F-shaped structures, and the embodiments of the present application do not specifically limit their shapes. For another example, the first conductor structure 140 and the second conductor structure 160 can be provided with a slit 311, the slit 311 can be, but not limited to, elongated, arc-shaped, ring-shaped, butterfly-shaped, the specific structure of the slit 311 in the embodiment of the present application Not limited. For another example, the first conductor structure 140 and the second conductor structure 160 may be electrically connected with an adjustment circuit, and the adjustment circuit may include one or more components such as capacitors, resistors, and inductors. To limit. The embodiment of the present application does not limit the specific forms of the first conductor structure 140 and the second conductor structure 160, and any notch structure that can form the antenna unit 120 to transmit the first wireless signal of the first wavelength can be the embodiment of the present application. The first conductor structure 140 and the second conductor structure 160.

It should be noted that, in addition to the antenna unit 120 described above, the antenna device 100 of the present application may also be provided with other antenna modules, for example, one or more antenna modules may be provided relative to the fourth side 104 of the ground plane 110 . The structure of the antenna module may be the same as that of the antenna unit 120, or may be different. This embodiment of the present application does not limit it.

Based on the above-mentioned structure of the antenna device 100, the embodiment of the present application also provides an electronic device 10. The electronic device 10 may be a smart phone, a tablet computer, etc., or a game device or an augmented reality (Augmented Reality, AR) device. , automotive devices, data storage devices, audio playback devices, video playback devices, notebook computers, desktop computing devices, etc.

Please refer to FIG. 14 , which is a schematic structural diagram of an electronic device 10 provided by an embodiment of the present application. The electronic device 10 may include the antenna device 100 of the foregoing embodiments. For example, the electronic device may include an antenna device 100, and the antenna device 100 may include:

The ground plane 110 includes a first side 101 and a second side 102 extending in different directions, the first side 101 is provided with a first ground point 111, and the second side 102 is provided with a second ground point 112;

The antenna unit 120 is arranged opposite to the first side 101, and the antenna unit 120 is connected to the first ground point 111;

The first feed source 130 is electrically connected to the antenna unit 120, and the first feed source 130 is used to provide a first excitation signal so that the antenna unit 120 transmits a first wavelength signal;

The first conductor structure 140 is disposed opposite to the second side 102 , and the first conductor structure 140 is electrically connected to the second ground point 112 to reduce the directivity of the antenna unit 120 to transmit the first wavelength signal.

Wherein, the distance between the first ground point 111 and the second ground point 112 is about the first wavelength.

Wherein, one end of the first conductor structure 140 is electrically connected to the second ground point 112 , and the other end extends away from the antenna unit 120 .

Wherein, when the antenna unit 120 transmits the first wavelength signal, the first conductor structure 140 is used to form a quarter-wavelength resonance mode.

Wherein, the second side 102 includes a first end 1021 and a second end 1022, and the first end 1021 is connected to the first side 101; the distance between the second ground point 112 and the first end 1021 is smaller than the distance between the second ground point 112 and the second end 1022 distance.

Wherein, the antenna device 100 further includes a second feed source 150, the second feed source 150 is electrically connected to the first conductor structure 140, and the second feed source 150 is used to provide a second excitation signal, so that the first conductor structure 140 transmits the second wavelength signal.

Wherein, one end of the antenna unit 120 is electrically connected to the first ground point 111 , and the other end extends toward the direction of the first conductor structure 140 .

Wherein, the ground plane 110 also includes a third side 103, the third side 103 is arranged opposite to the second side 102, and the third side 103 is provided with a third ground point 113; the antenna device 100 also includes: a second conductor structure 160, the second The second conductor structure 160 is disposed opposite to the third side 103 , and the second conductor structure 160 is electrically connected to the third ground point 113 for reducing the directivity of the antenna unit 120 transmitting the first wavelength signal.

Wherein, the distance between the third ground point 113 and the first ground point 111 is about the first wavelength.

Wherein, one end of the second conductor structure 160 is electrically connected to the third ground point 113 , and the other end extends away from the direction where the antenna unit 120 is located.

Wherein, when the antenna unit 120 transmits the first wavelength signal, the second conductor structure 160 is used to form a quarter-wavelength resonance mode.

Wherein, the antenna device 100 may further include a third feed source 170, the third feed source 170 is electrically connected to the second conductor structure 160, and the third feed source 170 is used to provide a third excitation signal, so that the second conductor structure 160 transmits the first Three-wavelength signal.

Wherein, please refer to FIG. 14 again, the electronic device 10 further includes a display screen 200 , a middle frame 300 , a circuit board 400 , a battery 500 and a rear case 600 .

The display screen 200 can be installed on the middle frame 300 and connected to the rear case 600 through the middle frame 300 to form the display surface of the electronic device 10 . The display screen 200 can be used to display information such as images and texts. The display screen 200 may be an organic light-emitting diode (Organic Light-Emitting Diode, OLED) display device or an organic light-emitting diode (Organic Light-Emitting Diode, OLED) display or other type of display device.

The middle frame 300 may include a frame 310 and a middle board 320 , and the middle board 320 may provide support for electronic devices or electronic devices in the electronic device 10 . The frame 310 is connected to the edge of the supporting board and protrudes from the supporting board. The frame 310 and the middle plate 320 form an accommodating space, and electronic components and electronic devices in the electronic device 10 can be installed and fixed in the accommodating space.

The circuit board 400 may be installed on the middle frame 300 . The circuit board 400 may be a main board of the electronic device 10 . Wherein, the circuit board 400 may be integrated with one or two of electronic devices such as a microphone, a loudspeaker, a receiver, a headphone jack, a universal serial bus interface (USB interface), a camera assembly, a distance sensor, an environmental sensor, a gyroscope, and a processor. one or more. Wherein, the display screen 200 can be electrically connected to the circuit board 400 so as to control the display of the display screen 200 through the processor on the circuit board 400 . One or more of the first feed source 130 , the second feed source 150 , and the third feed source 170 may be disposed on the circuit board 400 so as to control the above devices through a processor.

The battery 500 may be installed in the middle frame 300 . Meanwhile, the battery 500 is electrically connected to the circuit board 400 so that the battery 500 supplies power to the electronic device 10 . A power management circuit may be provided on the circuit board 400 . The power management circuit is used to distribute the voltage provided by the battery 500 to various electronic devices in the electronic device 10 .

The rear case 600 may be connected to the middle frame 300 . The rear case 600 is used to seal the electronic devices and functional components of the electronic device 10 inside the electronic device 10 together with the middle frame 300 and the display screen 200 , so as to protect the electronic devices and functional components of the electronic device 10 .

Wherein, please refer to FIG. 13 again, when the frame 310 of the middle frame 300 is made of conductive material, one or more gaps 311 may be provided on the frame 310 of the middle frame 300 to form one or more metal branches 312 . The antenna unit 120 of the antenna device 100 may include one or more metal studs 312 therein. Therefore, the frame 310 of the embodiment of the present application can be reused as the antenna unit 120, and the antenna device 100 and the electronic device 10 can realize a miniaturized design.

It can be understood that the first conductor structure 140 may also include one or more metal branches 312 on the frame 310 , and the second conductor structure 160 may also include one or more metal branches 312 on the frame 310 . This embodiment of the present application does not limit it.

It can be understood that the antenna unit 120 , the first conductor structure 140 and the second conductor structure 160 may also be formed on other conductor structures of the electronic device 10 . For example, when the rear case 600 is made of conductive material, one or more of the antenna unit 120 , the first conductor structure 140 , and the second conductor structure 160 may also include one or more metal branches 312 on the rear case 600 . The embodiment of the present application does not specifically limit the formation manners of the antenna unit 120 , the first conductor structure 140 , and the second conductor structure 160 .

Wherein, please refer to FIG. 13 again, when the middle plate 320 of the middle frame 300 is made of conductive material, the middle plate 320 can form the ground plane 110 of the antenna device 100 . At this time, the middle board 320 can not only carry the components of the electronic device 10 but also serve as a grounding device, the middle board 320 can realize multiplexing, and the antenna device 100 and the electronic device 10 can realize a miniaturized design.

It can be understood that when the antenna unit 120, the first conductor structure 140, and the second conductor structure 160 are formed on the middle frame 300, and the middle plate 320 forms the ground plane 110, at this time, the antenna unit 120, the first conductor structure 140, The distance between the second conductor structure 160 and the ground plane 110 is closer, and the ground wiring of the antenna unit 120 , the first conductor structure 140 , and the second conductor structure 160 is easier to arrange, which can simplify the structure of the antenna device 100 .

It should be noted that the ground plane 110 of the antenna device 100 may also be disposed on other structures. For example, the ground plane 110 may be, but not limited to, formed on the circuit board 400 , the rear case 600 and other components of the electronic device 10 . This embodiment of the present application does not limit this.

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

The antenna device and the electronic device provided by the embodiments of the present application have been introduced in detail above. In this paper, specific examples are used to illustrate the principles and implementation methods of the present application, and the descriptions of the above embodiments are only used to help understand the present application. At the same time, for those skilled in the art, based on the idea of this application, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be construed as limiting the application.

Claims

An antenna device comprising:

A ground plane, including a first side and a second side with different extending directions, the first side is provided with a first ground point, and the second side is provided with a second ground point;

An antenna unit, arranged opposite to the first side, the antenna unit is electrically connected to the first ground point;

A first feed source, electrically connected to the antenna unit, the first feed source is used to provide a first excitation signal, so that the antenna unit transmits a first wavelength signal; and

The first conductor structure is disposed opposite to the second side, and the first conductor structure is electrically connected to the second ground point for reducing the directivity of the antenna unit transmitting the first wavelength signal.
The antenna device according to claim 1, wherein the distance between the first ground point and the second ground point is about a first wavelength.
The antenna device according to claim 1, wherein one end of the first conductor structure is electrically connected to the second ground point, and the other end extends away from the antenna unit.
The antenna arrangement according to claim 1, wherein said first conductor structure is configured to form a quarter wavelength resonant mode when said antenna element transmits said first wavelength signal.
The antenna arrangement of claim 1, wherein the first wavelength signal comprises a Wi-Fi signal.
The antenna device according to claim 1, wherein the second side includes a first end and a second end, the first end is connected to the first side; the second ground point is connected to the first The distance between the ends is smaller than the distance between the second ground point and the second end.
The antenna device according to claim 1, wherein the antenna device further comprises:

A second feed source, the second feed source is electrically connected to the first conductor structure, and the second feed source is used to provide a second excitation signal, so that the first conductor structure transmits a second wavelength signal.
The antenna device according to claim 1, wherein one end of the antenna element is electrically connected to the first ground point, and the other end extends toward the direction of the first conductor structure.
The antenna device according to claim 1, wherein the ground plane further includes a third side, the third side is arranged opposite to the second side, and a third grounding point is provided on the third side; The antenna device also includes:

The second conductor structure is disposed opposite to the third side, and the second conductor structure is electrically connected to the third ground point for reducing the directivity of the first wavelength signal transmitted by the antenna unit.
The antenna arrangement according to claim 9, wherein the distance between the third ground point and the first ground point is about the first wavelength.
The antenna device according to claim 9, wherein one end of the second conductor structure is electrically connected to the third ground point, and the other end extends away from the antenna unit.
The antenna arrangement according to claim 9, wherein said second conductor structure is adapted to form a quarter wavelength resonant mode when said antenna element transmits said first wavelength signal.
The antenna device according to claim 9, wherein the antenna device further comprises:

A third feed source, the third feed source is electrically connected to the second conductor structure, and the third feed source is used to provide a third excitation signal, so that the second conductor structure transmits a signal of a third wavelength.
An electronic device comprising an antenna device, the antenna device comprising:

A ground plane, including a first side and a second side with different extending directions, the first side is provided with a first ground point, and the second side is provided with a second ground point;

An antenna unit, arranged opposite to the first side, the antenna unit is electrically connected to the first ground point;

A first feed source, electrically connected to the antenna unit, the first feed source is used to provide a first excitation signal, so that the antenna unit transmits a first wavelength signal; and

The first conductor structure is disposed opposite to the second side, and the first conductor structure is electrically connected to the second ground point for reducing the directivity of the antenna unit transmitting the first wavelength signal.
The electronic device according to claim 14, wherein the electronic device further comprises:

The middle frame includes a middle plate and a frame, the middle plate forms the ground plane, the frame is provided with a gap to form a metal branch, and the antenna unit includes the metal branch.
The electronic device of claim 14, wherein the distance between the first ground point and the second ground point is about a first wavelength.
The electronic device according to claim 14, wherein one end of the first conductor structure is electrically connected to the second ground point, and the other end extends in a direction away from the antenna unit; and/or,

One end of the antenna unit is electrically connected to the first ground point, and the other end extends toward the direction of the first conductor structure.
The electronic device of claim 14, wherein the first conductor structure is configured to form a quarter wavelength resonant mode when the antenna unit transmits the first wavelength signal.
The electronic device according to claim 14, wherein the electronic device further comprises:

A second feed source, the second feed source is electrically connected to the first conductor structure, and the second feed source is used to provide a second excitation signal, so that the first conductor structure transmits a second wavelength signal.
The electronic device according to claim 14, wherein the ground plane further includes a third side, the third side is arranged opposite to the second side, and a third grounding point is provided on the third side; The antenna device also includes:

The second conductor structure is disposed opposite to the third side, and the second conductor structure is electrically connected to the third ground point for reducing the directivity of the first wavelength signal transmitted by the antenna unit.