CN116826358A

CN116826358A - Electronic equipment

Info

Publication number: CN116826358A
Application number: CN202210289150.3A
Authority: CN
Inventors: 龚祖宏; 林士杰
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2023-09-29

Abstract

The application provides electronic equipment, an antenna device of the electronic equipment comprises a first radiator, a second radiator and a feed source, wherein a first branch is formed between a first end part of the first radiator and a first grounding point, a second branch is formed between the first grounding point and the second end part of the first radiator, and the first grounding point is used for realizing the grounding of the first radiator. The second radiator is connected to the second end of the first radiator such that the second radiator is integral with the first radiator. The feed source is electrically connected with the second radiator and can provide exciting current so that the first radiator forms first resonance and the second radiator forms second resonance; and when the first radiator forms first resonance, the current density of the first radiator distributed on the first branch is smaller than that of the second branch. Based on the above, when the user holds the first branch of the first radiator, the antenna performance of the first radiator will not generate larger attenuation, and the electronic device can maintain better radiation performance.

Description

Electronic equipment

Technical Field

The application relates to the technical field of communication, in particular to electronic equipment.

Background

With the development of communication technology, electronic devices such as smartphones are capable of realizing more and more functions, and communication modes of the electronic devices are also more diversified. Each communication mode needs a corresponding antenna to support, and the performance of the antenna directly determines the communication quality and the use experience of a user.

However, when the user holds the antenna, the efficiency of the antenna is seriously affected, and the performance of the antenna is greatly affected. Therefore, it is desirable to provide a solution that has less influence on the antenna performance in the hand-held state of the user.

Disclosure of Invention

The embodiment of the application provides electronic equipment, which can improve the radiation performance of an antenna in the handheld state of the electronic equipment.

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

a first radiator including a first end portion and a second end portion, and a first grounding point located between the first end portion and the second end portion, wherein a first branch is formed between the first grounding point and the first end portion, and a second branch is formed between the first grounding point and the second end portion; the first grounding point is grounded;

one end of the second radiator is connected with the second end part, the other end of the second radiator extends towards a direction away from the first radiator, and the second radiator is grounded; a kind of electronic device with high-pressure air-conditioning system

The feed source is electrically connected with the second radiator and is used for providing exciting current for the first radiator and the second radiator so that the first radiator forms first resonance and the second radiator forms second resonance; wherein,

When the first radiator forms the first resonance, the current density of the first radiator distributed in the first branch is smaller than that of the first radiator distributed in the second branch.

According to the electronic equipment, the excitation current provided by the feed source enables the first radiator to form first resonance, the second radiator to form second resonance, and when the first radiator is provided with the first grounding point, the current density distributed in the first branch is smaller than the current density distributed in the second branch when the first radiator forms the first resonance. Therefore, according to the application, the feed source is introduced into the second radiator, the exciting current is introduced into the first radiator, the first grounding point is arranged on the first radiator, the exciting current can return to the ground in advance when the exciting current does not reach the first end part of the first radiator, the current density of the first branch is smaller than that of the second branch, and the radiation specific gravity of the first branch of the first radiator can be reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the application and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a first structure of an electronic device according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of the first radiator shown in fig. 1 without the first grounding point.

Fig. 3 is a schematic diagram of a current distribution of the antenna device shown in fig. 1.

Fig. 4 is a schematic diagram of a current distribution of the antenna device shown in fig. 2.

Fig. 5 is a schematic diagram showing the performance curves of the antenna device shown in fig. 1 and 2.

Fig. 6 is a schematic diagram showing the performance curves of the antenna device shown in fig. 1 and 2 in a folded state.

Fig. 7 is a schematic diagram of a second structure of an electronic device according to an embodiment of the present application.

Fig. 8 is a schematic diagram of a third structure of an electronic device according to an embodiment of the present application.

Fig. 9 is a schematic diagram of a fourth structure of an electronic device according to an embodiment of the present application.

Fig. 10 is a schematic diagram of a fifth structure of an electronic device according to an embodiment of the present application.

Fig. 11 is a schematic diagram of a sixth structure of an electronic device according to an embodiment of the present application.

Fig. 12 is a schematic view of a seventh structure of an electronic device according to an embodiment of the present application.

Fig. 13 is a schematic structural view of the electronic device shown in fig. 12 in another form.

Fig. 14 is a schematic view of an eighth structure of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to fig. 1 to 14 in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.

The embodiment of the application provides an electronic device 10 and an antenna device 100, and the antenna device 100 can realize a wireless communication function. For example, the antenna device 100 may transmit Wi-Fi signals, global positioning system (Global Positioning System, GPS) signals, third Generation mobile communication technology (3 rd-Generation, 3G), fourth Generation mobile communication technology (4 th-Generation, 4G), fifth Generation mobile communication technology (5 th-Generation, 5G), near field communication (Near field communication, NFC) signals, bluetooth (BT) signals, ultra WideBand (UWB) signals, and the like. The electronic device 10 may be a smart phone, a tablet computer, or the like, and may also be a game device, an augmented reality (Augmented Reality, abbreviated as AR) device, an automobile device, a data storage device, an audio playing device, a video playing device, a notebook computer, a desktop computing device, or the like.

Referring to fig. 1, fig. 1 is a schematic diagram of a first structure of an electronic device 10 according to an embodiment of the application. The electronic device 10 includes an antenna arrangement 100, and the electronic device 10 or the antenna arrangement 100 may include a first radiator 110, a second radiator 120, a feed 130, and a ground plane 140.

The first radiator 110 includes a first end 111 and a second end 112, and a first ground point 113 between the first end 111 and the second end 112, a first stub 114 may be formed between the first ground point 113 and the first end 111, a second stub 115 may be formed between the first ground point 113 and the second end 112, and the first ground point 113 may be directly or indirectly electrically connected with the ground plane 140 to achieve grounding.

One end of the second radiator 120 may be connected to the second end 112 of the first radiator 110, and the other end may extend in a direction away from the first radiator 110. Illustratively, the second radiator 120 includes a third end 121 and a fourth end 122, the third end 121 may be directly or indirectly connected to the second end 112 of the first radiator 110, and the fourth end 122 may extend in a direction away from the first radiator 110 and the third end 121. Thus, the second radiator 120 may be physically connected to the first radiator 110, which may form a longer radiating branch. A second ground point (not shown in fig. 1) may be provided on the second radiator 120, through which the second radiator 120 may be directly or indirectly electrically connected to the ground plane 140 to achieve ground. It will be appreciated that the second ground point is located at a different position than the first ground point 113 so that the first and second radiators 110, 120 may have respective return points.

The feed source 130 may be directly or indirectly electrically connected to the second radiator 120, and the feed source 130 may provide excitation current to the first radiator 110 and the second radiator 120, where the excitation current may flow into the second radiator 120 to enable the second radiator 120 to form a second resonance and support a second wireless signal in a second frequency band; the excitation current may also flow from the second radiator 120 to the first radiator 110 so that the first radiator 110 forms a first resonance and supports a first wireless signal of a first frequency band.

The ground plane 140 may form a common ground. The ground plane 140 may be formed by conductors, printed wiring, or metallic printed layers, etc. in the antenna apparatus 100 or electronic device 10. For example, the ground plane 140 may be provided on a circuit board, a small board of the antenna apparatus 100 or the electronic device 10, or may be formed on a center frame of the antenna apparatus 100 or the electronic device 10. The first grounding point 113 of the first radiator 110 and the second radiator 120 may be directly or indirectly electrically connected to the ground plane 140, so as to implement grounding of the first radiator 110 and the second radiator 120.

It will be appreciated that when an excitation current flows over the first radiator 110 such that the first radiator 110 forms a first resonance, the excitation current may flow from the first ground point 113 to the ground plane 140 and to ground, at which point the current density of the first radiator 110 distributed over the first branch 114 may be less than the current density distributed over the second branch 115.

For example, please refer to fig. 1 in combination with fig. 2 to fig. 4, fig. 2 is a schematic diagram of a structure in which the first radiator 110 shown in fig. 1 is not provided with the first grounding point 113, fig. 3 is a schematic diagram of a current distribution of the antenna device 100 shown in fig. 1, and fig. 4 is a schematic diagram of a current distribution of the antenna device 100 shown in fig. 2.

As can be seen from fig. 2 and 4, when the first radiator 110 is not provided with the first grounding point 113 and is not grounded, the excitation current fed into the first radiator 110 by the feed 130 and the excitation current fed into the second radiator 120 can be returned to the ground from the second grounding point of the second radiator 120. The current of the antenna device 100 is mainly concentrated at the junction of the first radiator 110 and the second radiator 120 and on the second radiator 120.

As shown in fig. 1 and 3, when the first radiator 110 is provided with the first ground point 113, the excitation current of the first radiator 110 may return to the ground from the first ground point 113, and at this time, the current of the antenna device 100 is mainly concentrated at the junction of the first ground point 113 to the first radiator 110, the second radiator 120, and the second radiator 120. Also, as can be seen from fig. 3, the density of the excitation current distributed over the first branch 114 between the first end 111 and the first ground point 113 on the first radiator 110 is significantly lower than the density of the excitation current distributed over the second branch 115 between the first ground point 113 and the second end 112. Based on this, the present application introduces the feed 130 and the excitation current into the second radiator 120, and sets the first grounding point 113 on the first radiator 110, so that the excitation current can return to the ground in advance when not reaching the first end 111 of the first radiator 110, and the current density of the first branch 114 is smaller than that of the second branch 115, so that the radiation specific gravity of the first branch of the first radiator 110 can be reduced. Thus, even if the user holds the first branch 114 of the first radiator 110, the overall radiation efficiency and radiation performance of the first radiator 110 are not greatly affected, and the antenna performance of the first radiator 110 is not greatly attenuated.

For further example, please refer to fig. 5 in combination with fig. 1 and fig. 2, and fig. 5 is a schematic diagram illustrating a performance curve of the antenna device 100 shown in fig. 1 and fig. 2. Curves S1 to S4 in fig. 5 are standing wave curves when the antenna device 100 shown in fig. 2 is not held, standing wave regions when the antenna device 100 is held, antenna efficiency curves when the antenna device 100 is not held, and antenna efficiency curves when the antenna device 100 is held; curves S5 to S8 are standing wave curves when the antenna device 100 is not held, standing wave regions when the antenna device 100 is held, antenna efficiency curves when the antenna device 100 is not held, and antenna efficiency curves when the antenna device 100 is held, which are shown in fig. 1. As can be seen from the curves S1 to S4, when the first radiator 110 is not added with the ground return structure and is not grounded from the first ground point 113, the user holds the antenna to block most of the current of the first radiator 110 from flowing back to the ground, so that the radiation capability of the first radiator 110 is greatly attenuated and the standing wave of the antenna is affected, and even the standing wave of the first radiator 110 is attenuated by 80%, the radiation capability is substantially 0, and the radiation efficiency of the antenna is only-20 dB. As can be seen from the curves S5 to S8, when the first radiator 110 is added with a ground return structure, for example, the ground return structure is conducted from the first ground point 113, the exciting current can be conducted through the first ground point 113 to return to the ground so that the current on the first branch 114 of the first radiator 110 is smaller, even if the user holds the first branch 114, the effect of the holding state on the first radiator 110 is smaller, the standing wave of the first radiator 110 still meets the requirement, and meanwhile, after the user holds the first branch 114, the antenna efficiency of the first radiator 110 can be about-8 dB, which is far greater than the antenna efficiency of the first radiator 110 shown in fig. 2.

In the electronic device 10 according to the embodiment of the present application, the first branch 114 is formed between the first end 111 and the first grounding point 113 of the first radiator 110 of the antenna device 100, the second branch 115 is formed between the first grounding point 113 and the second end 112, and the first grounding point 113 realizes the grounding of the first radiator 110. The third end 121 of the second radiator 120 is connected with the second end 112 of the first radiator 110 such that the second radiator 120 is formed integrally with the first radiator 110. The feed 130 is electrically connected to the second radiator 120 and can provide an excitation current so that the first radiator 110 forms a first resonance and the second radiator 120 forms a second resonance; when the first radiator 110 forms the first resonance, the current density of the first radiator 110 distributed in the first branch 114 is smaller than the current density distributed in the second branch 115. Based on this, the excitation current may return to ground in advance when the excitation current does not reach the first end of the first radiator, where the current density of the first branch is smaller than the current density of the second branch, so that the radiation specific gravity of the first branch of the first radiator may be reduced, and even if the user holds the first branch 114 of the first radiator 110, the antenna performance of the first radiator 110 may not be greatly attenuated, so that the electronic device 10 of the present application may maintain a better radiation performance in a holding state.

It can be appreciated that, when the electronic device 10 is a foldable electronic device 10, the electronic device 10 according to the embodiment of the present application has little influence on the radiation performance of the antenna apparatus 100 in the folded state even if the electronic device 10 is in the folded state. For example, please refer to fig. 6, fig. 6 is a schematic diagram illustrating a comparison of performance curves of the antenna device 100 shown in fig. 1 and 2 in a folded state. Curves S9 to S12 in fig. 6 are standing wave curves when the antenna device 100 shown in fig. 2 is not held, standing wave regions when the antenna device 100 is held, antenna efficiency curves when the antenna device 100 is not held, and antenna efficiency curves when the antenna device 100 is held; curves S13 to S16 are standing wave curves when the antenna device 100 is not held, standing wave regions when the antenna device 100 is held, antenna efficiency curves when the antenna device 100 is not held, and antenna efficiency curves when the antenna device 100 is held, which are shown in fig. 1. As can be seen from the curves S9 to S12, when the first radiator 110 is not added with the ground return structure and is not grounded from the first ground point 113, the user holds the first radiator 110 in the folded state to block most of the current flowing back to the ground, so that the radiation capability of the first radiator 110 is greatly attenuated and the standing wave of the antenna is affected. As can be seen from the curves S13 to S16, when the first radiator 110 is added with a ground return structure, for example, the ground return structure is connected from the first ground point 113, the exciting current can be returned through the first ground point 113 to make the current on the first branch 114 of the first radiator 110 smaller, and even if the user holds the first branch 114 in the folded state, the effect of the holding state on the first radiator 110 is smaller, and the standing wave of the first radiator 110 still meets the requirement.

According to the electronic device 10 of the embodiment of the application, the first radiator 110 is grounded through the first grounding point 113, so that the current density of the first branch 114 is smaller than that of the second branch 115, and no matter the electronic device 10 is in an unfolded state or a folded state, the effect of the user holding the first branch 114 on the radiation performance of the first radiator 110 is not great, and the electronic device 10 has better radiation performance in different forms.

It is understood that when the first radiator 110 forms the first resonance, an antenna resonance mode of a quarter wavelength may be formed, and the first radiator 110 may be an inverted-F antenna resonance mode. Similarly, when the second radiator 120 forms the second resonance, an antenna resonance mode of a quarter wavelength may be formed, and the second radiator 120 may be an inverted-F antenna resonance mode. The first radiator 110 and the second radiator 120 of the embodiment of the present application may together form an antenna resonance mode of one half wavelength.

At least one of the first radiator 110 and the second radiator 120 may also form other antenna resonance modes, such as a half-resonance mode and a three-quarter resonance mode. At this time, the first radiator 110 and the second radiator 120 may form other antenna resonance modes together, correspondingly. The embodiment of the present application is not particularly limited thereto. It is understood that the frequency of the first resonance formed by the first radiator 110 and the second resonance formed by the second radiator 120 may be the same, so that the first radiator 110 and the second radiator 120 may transmit wireless signals of the same frequency. For example, the first radiator 110 and the second radiator 120 may together form an antenna resonance mode of a half wavelength and transmit a radio signal of a certain frequency. The length of the first radiator 110 may be comparable to the length of the second radiator 120 such that the frequencies of the first resonance and the second resonance are the same. Of course, the frequency difference between the first resonance formed by the first radiator 110 and the second resonance formed by the second radiator 120 may be smaller than a preset threshold, so that the first resonance and the second resonance may transmit wireless signals in the same frequency band. For example, the frequencies of the first resonance and the second resonance may each be a certain frequency within the B8 band, so that both the first radiator 110 and the second radiator 120 may transmit the B8 band signal.

It should be noted that, the lengths of the first radiator 110 and the second radiator 120 may be adjusted so that the frequency difference between the first resonance and the second resonance is greater than a preset threshold, and the first radiator 110 and the second radiator 120 may respectively transmit signals in a certain frequency band. For example, the frequency of the first resonance may be a frequency within the B3 band such that the first radiator 110 transmits signals of the B3 band, and the frequency of the second resonance may be a frequency within the B8 band such that the second radiator 120 transmits signals of the B8 band.

Referring to fig. 7, fig. 7 is a schematic diagram of a second structure of the electronic device 10 according to the embodiment of the application. The electronic device 10 or the antenna apparatus 100 of the embodiment of the present application may further include a ground stub 150 and a ground circuit 160.

One end of the grounding branch 150 may be directly or indirectly electrically connected to the first grounding point 113 of the first radiator 110, the other end of the grounding branch 150 may be directly or indirectly electrically connected to the ground plane 140, and the grounding branch 150 may be grounded and realize grounding of the first radiator 110.

It is understood that the ground stub 150 may include, but is not limited to, a length of wire, a metal screw, a metal stub, a bonding pad, a solder joint, a metal plated hole, etc. The specific form of the grounding strap 150 is not limited by the embodiments of the present application.

One end of the ground circuit 160 may be directly or indirectly electrically connected to the second radiator 120, the other end of the ground circuit 160 may be directly or indirectly electrically connected to the ground plane 140, and the ground circuit 160 may be grounded and implement the grounding of the second radiator 120.

When the feed 130 provides an excitation current to the first and second radiators 110 and 120, the impedance of the ground circuit 160 to the excitation current is greater than the impedance of the ground branch 150 to the excitation current. It will be appreciated that the greater the impedance to the excitation current, the less the excitation current from there back to ground; the smaller the blocking of the excitation current, the easier it is for the excitation current to return to ground there from. When the feed 130 provides an excitation current to the first radiator 110 and the second radiator 120, the excitation current flowing through the first radiator 110 is more prone to return to ground from the less-impedance ground branch 150; the excitation current flowing through the second radiator 120 will tend to return to ground through the ground circuit 160 electrically connected to the second radiator 120, so that the first radiator 110 and the second radiator 120 are different in ground point, the first radiator 110 and the second radiator 120 have less interference with each other, and noise occurs in the antenna tuning process less.

It can be appreciated that when the first radiator 110 is grounded through the grounding branch 150 with a smaller impedance, the first radiator 110 does not need to be specially designed for the position of the grounding branch 150, so that the excitation current provided by the feed source 130 can be fed into the first radiator 110 and grounded (when the impedance of the grounding branch 150 is larger, the excitation current may be directly fed from the ground of the second radiator 120 to the first radiator instead of being fed into the first radiator, thereby affecting the formation of the first resonance), and the setting position of the grounding branch 150 of the first radiator 110 in the embodiment of the present application is more flexible.

It is to be appreciated that the ground circuit 160 may include, but is not limited to, a circuit configuration comprising one or more of an inductance, a capacitance, a resistance, etc., such that the impedance of the ground circuit 160 to the excitation current is greater than the impedance of the ground branch 150 to the excitation current. For example, ground circuit 160 may include, but is not limited to including, an inductance having a greater impedance to the excitation current than ground branch 150.

In the electronic device 10 and the antenna device 100 according to the embodiments of the present application, the first radiator 110 is grounded through the grounding branch 150 with a smaller impedance, and the second radiator 120 is grounded through the grounding circuit 160 with a larger impedance, so that the first radiator 110 and the second radiator 120 may have respective grounding points, and mutual interference between the first radiator 110 and the second radiator 120 is smaller. Meanwhile, the arrangement position of the grounding branch 150 of the first radiator 110 is more flexible, and the layout of the antenna device 100 is more convenient.

It should be noted that, in the embodiment of the present application, the second radiator 120 may be grounded through other structures, for example, the second radiator 120 may also be grounded through a grounding branch, where the position of the grounding branch of the second radiator 120, the position of the grounding branch 150 of the first radiator 110, and the position of the feed source 130 may be reasonably set, so that part of the exciting current provided by the feed source 130 may be grounded from the grounding branch of the second radiator 120, so that the second radiator 120 forms the second resonance, and another part of the exciting current may be grounded from the grounding branch 150 of the first radiator 110, so that the first radiator 110 forms the first resonance. The specific structure of the second radiator 120 grounded is not limited in the embodiment of the present application.

Referring to fig. 7 again, the feed 130 of the embodiment of the present application may be electrically connected to the third end 121 of the second radiator 120 (also referred to as being electrically connected to the second end 112 of the first radiator 110).

Since the first radiator 110 is connected to the second radiator 120 at the third end 121, the excitation current provided by the feed 130 is more easily fed into the first radiator 110 from the third end 121, so that the first radiator 110 is more easily excited to form the first resonance.

It can be appreciated that referring to fig. 8, fig. 8 is a schematic diagram of a third structure of the electronic device 10 according to the embodiment of the application. The feed 130 may also be electrically connected to other locations of the second radiator 120, for example, the feed 130 may be electrically connected to any region between the third and fourth ends 121, 122 of the second radiator 120. The embodiment of the present application does not limit the specific electrical connection location of the feed 130.

Referring to fig. 7 again, the ground circuit 160 may be electrically connected to the same area of the second radiator 120 as the feed 130. For example, the ground circuit 160 may be electrically connected to the third end 121 of the second radiator 120 (also referred to as being electrically connected to the second end 112 of the first radiator 110).

Since the impedance of the ground circuit 160 to the excitation current is greater than the impedance of the ground branch 150 to the excitation current, when the ground circuit 160 is electrically connected to the third end 121, on the one hand, when the feed source 130 is electrically connected to the third end 121, the flow path of the excitation current flowing on the second radiator 120 is shorter, and the excitation current flowing on the second radiator 120 is easier to return to ground; on the other hand, the grounding circuit 160 is electrically connected to the third end 121, and may block a part of the excitation current from flowing into the first radiator 110 from the third end 121 and from the grounding branch 150 of the first radiator 110 to the ground, so that the grounding circuit 160 may further avoid the interference between the first radiator 110 and the second radiator 120.

It can be appreciated that referring to fig. 9, fig. 9 is a schematic diagram of a fourth structure of the electronic device 10 according to the embodiment of the application. The ground circuit 160 may also be electrically connected to different regions of the second radiator 120 with the feed 130. For example, when the feed 130 is electrically connected to the third end 121, the ground circuit 160 may be electrically connected to any region between the third end 121 and the fourth end 122 of the second radiator 120. The specific electrical connection position of the grounding circuit 160 is not limited in the embodiment of the present application, and the grounding connection position of the second radiator 120 is not limited.

Referring to fig. 10, fig. 10 is a schematic diagram of a fifth structure of an electronic device 10 according to an embodiment of the application. The electronic device 10 or the antenna arrangement 100 of the embodiment of the application may further comprise a first switch 170 and a detection circuit 180.

The first switch 170 may be connected in series between the first ground point 113 of the first radiator 110 and the ground plane 140. For example, one end of the first switch 170 may be directly or indirectly electrically connected to the first ground point 113, and the other end of the first switch 170 may be directly or indirectly electrically connected to the ground stub 150. The first switch 170 may conduct the first ground point 113 and the ground branch 150 to achieve the grounding of the first radiator 110, and the first switch 170 may disconnect the first ground point 113 and the ground branch 150 so that the first radiator 110 is not grounded.

The detection circuit 180 may be electrically connected between the feed 130 and the second radiator 120. For example, one end of the detection circuit 180 may be directly or indirectly electrically connected to the feed 130, and the other end of the detection circuit 180 may be directly or indirectly electrically connected to the second radiator 120. When the first switch 170 disconnects the first ground point 113 from the ground plane 140 (e.g., disconnects the ground stub 150 from the first ground point 113), the detection circuit 180 may detect an electromagnetic wave absorption ratio (Specific absorption rate, simply "SAR") of the electronic device 10.

It will be appreciated that in antenna design, the effect of electromagnetic radiation generated by the electronic device 10 on the human body is often evaluated by SAR criteria. The larger the SAR value, the greater the impact on the human body. In the related art, the distance between the electronic device 10 and the human body is often detected by a sensor to reduce the power of the antenna when the electronic device 10 approaches the human body, thereby reducing the SAR value. However, the sensor is required to detect the SAR value, which increases the hardware cost of the electronic device 10 and the antenna device 100; on the other hand, the sensor often needs to be located in a specific location, which can take up space in the electronic device 10, as well as affect the layout of other structures.

In the embodiment of the present application, the detection circuit 180 uses the first radiator 110 as the sensing element thereof, the detection circuit 180 and the first radiator 110 may be sensitive to the approach of the head and the hand of the user, when the user is not approaching the electronic device 10 or the antenna apparatus 100, the difference between the data detected by the detection circuit 180 and the data detected when the user approaches the electronic device 10 or the antenna apparatus 100 is within the preset difference range, the difference between the data and the data detected when the user approaches the electronic device 10 or the antenna apparatus 100 is larger, the detection circuit 180 may detect whether the user approaches, and may determine whether the SAR value of the electronic device 10 exceeds the specified SAR value threshold according to the difference, so that the electronic device 10 may adjust the power of the antenna apparatus 100 according to the SAR value.

It is to be appreciated that the detection circuit 180 of embodiments of the present application may be, but is not limited to, one or more of capacitive, inductive, resistive, etc. electronic devices. For example, the detection circuit 180 of the embodiment of the present application may be a large capacitance device, when the first switch 170 disconnects the grounding branch 150 from the first grounding point 113, the second radiator 120 is in a floating ungrounded state, if the user holds the second radiator 120 by hand or the user approaches the second radiator 120, the capacitance value detected by the detection circuit 180 will change greatly, and according to the change, it can be determined whether the user approaches and the range of SAR values can be determined. It should be noted that the specific structure of the detection circuit 180 is not limited in the embodiment of the present application.

In the antenna device 100 according to the embodiment of the present application, the first switch 170 is turned off to make the first radiator 110 in a suspended state, and the detection circuit 180 is used to detect the SAR value of the electronic device 10, so that the electronic device 10 or the antenna device 100 does not need to set a sensor, and does not need to additionally reserve a design space of the sensor. The first switch 170 and the detection circuit 180 of the embodiment of the present application have lower hardware cost, simpler structure and less occupied space.

Referring to fig. 1 to 10 again, the distance between the first grounding point 113 and the first end 111 of the first radiator 110 may be within a predetermined distance range, so that the area covering the first branch 114 is more than the area covering the second branch 115 when the user holds the electronic device 10. At this time, the ratio of the lengths of the first and second limbs 114 and 115 of the first radiator 110 may be within a preset ratio range such that the probability that the first limb 114 is held by the user is greater than the probability that the second limb 115 is held by the user. It is understood that covering the first branch 114 more than the second branch 115 includes covering only the first branch 114 but not the second branch 115, and in this case, the second branch 115 is not covered, but the first branch 114 is covered more than the second branch 115. Of course, covering the first branch 114 in more areas than the second branch 115 may also include covering both the first branch 114 and the second branch 115, but covering the first branch 114 more than the second branch 115.

For example, as shown in fig. 1 to 10, the second branch 115 may be placed at a place where the long frame is near the lower end of the electronic device 10 or the antenna apparatus 100 vertically such that the first branch 114 is at a place where the long frame is near the middle or the middle upper portion. At this time, when the user holds the electronic device 10 or the antenna apparatus 100 vertically, the user's finger is easier to hold the first branch 114 and is not easy to hold the second branch 115, the attenuation generated by the user holding the first branch 114 with less current distribution is less, and the influence of the user holding on the radiation performance of the first radiator 110 is less.

Referring to fig. 1 to 10 and fig. 11, the electronic device 10 or the antenna apparatus 100 according to the embodiment of the application may further include a first frame 200 and a second frame 300.

The extending directions of the first frame 200 and the second frame 300 are different, so that the first frame 200 and the second frame 300 can be bent and connected with each other. For example, the first bezel 200 may be disposed to extend along a first direction H1, and the second bezel 300 may be disposed to extend along a second direction H2, and the first direction H1 may be different from the second direction H2. It is understood that the first frame 200 may be a long frame of the electronic device 10 or the antenna apparatus 100, and the second frame 300 may be a short frame of the electronic device 10 or the antenna apparatus 100. The first radiator 110 may be disposed opposite to the first frame 200, and the second radiator 120 may be disposed opposite to the second frame 300.

It is understood that the first radiator 110 is disposed opposite to the first frame 200, which may mean that a projection of the first radiator 110 on the first frame 200 is located on the first frame 200, or that the first radiator 110 is formed on the first frame 200. Similarly, the second radiator 120 is disposed opposite to the second frame 300, which may mean that the projection of the second radiator 120 on the second frame 300 is located on the second frame 300, or that the second radiator 120 is formed on the second frame 300.

In the electronic device 10 of the embodiment of the application, when the first radiator 110 and the second radiator 120 are disposed opposite to the first frame 200 and the second frame 300, respectively, the second end 112 of the first radiator 110 and the third end 121 of the second radiator 120 may be located at the bending corners of the first frame 200 and the second frame 300. When the user holds the electronic device 10 vertically, the user cannot easily hold the second branch 115 and the second radiator 120 of the first radiator 110, and the user's holding has little influence on the performance attenuation of the first radiator 110 and the second radiator 120, so that the electronic device 10 and the antenna apparatus 100 can still have good radiation performance.

As shown in fig. 11, a slit may be formed on the first frame 200 and a first metal branch 210 may be formed as the first radiator 110. The second frame 300 is also provided with a slit and forms a second metal branch 310 as the second radiator 120. Therefore, the first metal branch 210 and the second metal branch 310 can be used as a frame to bear other devices of the electronic device 10, and can also be used as a radiator to transmit wireless signals, the first metal branch 210 and the second metal branch 310 can be reused, the space occupied by the radiator can be saved, and the miniaturization design of the electronic device 10 and the antenna device 100 is realized.

Referring to fig. 12 and fig. 13, fig. 12 is a schematic view of a seventh structure of the electronic device 10 according to the embodiment of the application, and fig. 13 is a schematic view of the electronic device 10 shown in fig. 12 in another form. The electronic device 10 according to the embodiment of the present application may be a foldable electronic device 10, and the electronic device 10 or the antenna apparatus 100 may further include a first body 400, a second body 500, and a third radiator 190.

The first body 400 may include the first and second rims 200 and 300, and the first and second radiators 110 and 120 may be disposed on the first body 400 such that the first body 400 may carry the first and second radiators 110 and 120. The second body 500 may be folded or slid with respect to the first body 400 such that at least a portion of the second body 500 overlaps the first body 400. The third radiator 190 may be disposed on the second body 500, and when at least a portion of the second body 500 overlaps the first body 400, the third radiator 190 may be coupled with at least one of the first radiator 110 and the second radiator 120 and jointly support a signal of a predetermined frequency band, and an electrical length of the third radiator 190 may be greater than a quarter of a wavelength corresponding to the predetermined frequency band.

The first body 400 and the second body 500 may have a thin plate-like or sheet-like structure, or may have a hollow frame structure. The first body 400, the second body 500 may provide support for the electronics in the electronic device 10 to mount the electronics in the electronic device 10 together. The first body 400 and the second body 500 may be switched between an overlapped state and an unfolded state during the folding or sliding operation. For example, when the first body 400 and the second body 500 perform a folding or sliding operation, as shown in fig. 12, the first body 400 and the second body 500 may move and relatively expand to an expanded state; as shown in fig. 13, the first body 400 and the second body 500 may also be moved and folded over each other to an overlapped state. It is to be understood that the folding direction of the first body 400 and the second body 500 when performing the folding operation is not limited to the left-right folding direction shown in fig. 12 and 13, and may be, for example, folded or unfolded by moving up and down. It will be appreciated that the first body 400 and the second body 500 may also slide relatively far apart to a deployed state; alternatively, the first body 400 and the second body 500 may slide close to each other to an overlapped state. It should be noted that, the specific process of folding or sliding the first body 400 and the second body 500 with each other is not limited in the embodiment of the present application. As shown in fig. 12 and 13, the electronic device 10 may further include, but is not limited to, a connection structure 600 including a rotation shaft structure, a slide rail structure, etc., such that the first body 400 and the second body 500 may be folded and slid with each other. For the specific structure of the connection structure 600 such as the rotation shaft structure, the slide rail structure, etc., reference is made to the description in the related art, and detailed description thereof will not be given here.

As shown in fig. 12, when the first body 400 and the second body 500 are in the unfolded state, the first radiator 110, the second radiator 120 and the third radiator 190 are far away from each other and do not overlap, the third radiator 190 does not generate electromagnetic coupling with at least one of the first radiator 110 and the second radiator 120, at this time, the first radiator 110 may generate the first resonance alone and support the first wireless signal of the first frequency band under the excitation of the excitation signal provided by the feed 130, and the second radiator 120 may generate the second resonance alone and support the second wireless signal of the second frequency band under the excitation of the excitation signal provided by the feed 130.

As shown in fig. 13, when the first body 400 and the second body 500 are in the overlapped state, at least a portion of the third radiator 190 may overlap at least one of the first and second radiators 110, 120, and a projection of at least a portion of the third radiator 190 on the first body 400 may be positioned on at least one of the first and second radiators 110, 120, and the third radiator 190 may be electromagnetically coupled with at least one of the first and second radiators 110, 120. For example, the third radiator 190 may be coupled to the first radiator 110 and jointly generate a third resonance different from the first resonance, and the third radiator 190 may jointly support a third wireless signal in a third frequency band with the first radiator 110. For another example, the third radiator 190 may be coupled to the second radiator 120 and jointly generate a third resonance different from the second resonance, and the third radiator 190 may jointly support a third wireless signal in a third frequency band with the second radiator 120. For another example, the third radiator 190 may be coupled with the first radiator 110 and the second radiator 120 together and generate a third resonance different from the first resonance and the second resonance, and the third radiator 190 may support a third wireless signal in a third frequency band together with the first radiator 110 and the second radiator 120.

It is understood that the preset frequency band may be at least one of a first frequency band supported by the first radiator 110 and a second frequency band supported by the second radiator 120. When the electrical length of the third radiator 190 is greater than one-fourth of the corresponding wavelength of the wireless signals of the first frequency band supported by the first radiator 110, and/or the electrical length of the third radiator 190 is greater than one-fourth of the corresponding wavelength of the wireless signals of the second frequency band supported by the second radiator 120, the center frequency of the wireless signals of the third frequency band supported by the third radiator 190 may be less than the center frequency of the wireless signals of the first and/or second frequency bands. The third radiator 190 can be used as an auxiliary branch of the first radiator 110 and the second radiator 120, and the third resonance formed by the third radiator 190 and at least one of the first radiator 110 and the second radiator 120 can improve the radiation performance of the first resonance and the second resonance.

It is understood that the electrical length may refer to the effective electrical length. In general, the electrical length or effective electrical length of a radiating stub is often distinguished from the actual physical length of the radiating stub by the shape of the radiating stub, the capacitance, resistance, inductance, etc. of the radiating stub electrical connection. For example, when a tuning circuit or a matching circuit that changes the effective electrical length is not provided on the third radiator 190, the electrical length of the third radiator 190 may be equal to the physical length between both ends of the third radiator 190. When a tuning circuit or a matching circuit that can change the effective electrical length is further provided on the third radiator 190, the electrical length of the third radiator 190 may be greater than or less than the physical length between the two ends of the third radiator 190. In actual debugging, the shape of the third radiator 190, and the capacitance, inductance, resistance and other devices of the electrical connection can be adjusted, so that the electrical length of the third radiator 190 is greater than one quarter of the corresponding wavelength of the first frequency band and the second frequency band. The specific debugging method is not described here in detail.

In the electronic device 10 according to the embodiment of the present application, the first radiator 110 and the second radiator 120 are disposed on the first body 400, the third radiator 190 is disposed on the second body 500, and when the second body 500 overlaps the first body 400, the third radiator 190 can be coupled with at least one of the first radiator 110 and the second radiator 120 and jointly support the third frequency band signal, and the electrical length of the third radiator 190 is greater than one quarter of the corresponding wavelengths of the first frequency band and the second frequency band. Based on this, the center frequency of the third frequency band supported by the third radiator 190 and at least one of the first radiator 110 and the second radiator 120 may be lower than the center frequency of at least one of the first frequency band and the second frequency band supported by the first radiator 110 and the second radiator 120, the third radiator 190 may reduce the loss caused by the matching circuit when the first radiator 110 and the second radiator 120 support the first wireless signal and the second wireless signal, and the third radiator 190 may support the third wireless signal together with at least one of the first radiator 110 and the second radiator 120 and improve the system efficiency of the antenna apparatus 100, thereby making the radiation performance of the electronic device 10 better.

Referring to fig. 14, fig. 14 is a schematic diagram illustrating an eighth structure of the electronic device 10 according to the embodiment of the application. The electronic device 10 or antenna apparatus 100 may also include a flexible display 700, a circuit board 800, and a power supply 900.

The flexible display 700 may form a display surface of the electronic device 10 for displaying information such as images, text, and the like. Among other things, the flexible display screen 700 may include a liquid crystal display (Liquid Crystal Display, LCD) or an Organic Light-Emitting Diode (OLED) display screen or the like. The flexible display screen 700 may be connected to the first body 400 and the second body 500, and may be folded as the first body 400 and the second body 500 are folded.

For example, a first end of the flexible display screen 700 may be connected to the first body 400, and a second end of the flexible display screen 700 may be connected to the second body 500. When the first body 400 and the second body 500 are in the unfolded state, the flexible display screen 700 may be unfolded along with the first body 400 and the second body 500 such that the first end and the second end of the flexible display screen 700 may be in the same plane, and the flexible display screen 700 is in the unfolded state. When the first body 400 and the second body 500 are in the overlapped state, the flexible display screen 700 may be folded along with the folding of the first body 400 and the second body 500, so that the first end and the second end of the flexible display screen 700 may be folded close to each other or completely close to each other.

The circuit board 800 may be mounted on the first body 400 or the second body 500, and the circuit board 800 may be a motherboard of the electronic device 10. The circuit board 800 may have a processor integrated thereon, and may further have one or more of a headset interface, an acceleration sensor, a gyroscope, a motor, and other functional components integrated thereon. Wherein the flexible display 700, the feed 130 may be disposed on the circuit board 800 for control thereof by a processor on the circuit board 800.

The power supply 900 may be mounted on the first body 400 or the second body 500. Meanwhile, the power supply 900 may be electrically connected to the circuit board 800 to enable the power supply 900 to supply power to the electronic device 10. The circuit board 800 may have a power supply 900 management circuit disposed thereon. The power supply 900 management circuitry is used to distribute the voltage provided by the power supply 900 to the various electronic devices in the electronic device 10.

It should be understood that the foregoing is merely an exemplary example of the electronic device 10, and the electronic device 10 according to the embodiments of the present application may further include a camera, a sensor, an electroacoustic conversion device, etc., and these components may be referred to the description in the related art and are not described herein.

It should be understood that in the description of the present application, terms such as "first," "second," and the like are used merely to distinguish between similar objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.

The electronic device provided by the embodiment of the application is described in detail above. Specific examples are set forth herein to illustrate the principles and embodiments of the present application and are provided to aid in the understanding of the present application. Meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.

Claims

1. An electronic device, comprising:

2. The electronic device of claim 1, wherein the electronic device further comprises:

the grounding branch is electrically connected to the first grounding point and is used for grounding; a kind of electronic device with high-pressure air-conditioning system

And the grounding circuit is electrically connected with the second radiator and is used for grounding, and the impedance of the grounding circuit to the exciting current is larger than that of the grounding branch knot to the exciting current.

3. The electronic device of claim 2, wherein the feed and the ground circuit are electrically connected to a same region of the second radiator.

4. The electronic device of claim 1, wherein the electronic device further comprises:

the grounding plane is electrically connected to the first grounding point and the second radiator respectively so as to realize the grounding of the first radiator and the second radiator;

a first switch electrically connected between the first ground point and the ground plane; a kind of electronic device with high-pressure air-conditioning system

The detection circuit is electrically connected between the feed source and the second radiator; wherein,

The detection circuit is used for detecting the electromagnetic wave absorption ratio of the electronic equipment when the first switch disconnects the first grounding point and the grounding plane.

5. The electronic device of claim 1, wherein a distance between the first ground point and the first end is within a preset distance range such that a user holds the electronic device covering more of the area where the first branch is located than the area where the second branch is located.

6. The electronic device of claim 1, wherein the first resonance and the second resonance are at the same frequency; or, the frequency difference between the first resonance and the second resonance is smaller than a preset threshold value.

7. The electronic device of claim 1, wherein at least one of the first resonance and the second resonance is configured to form a quarter-wavelength antenna resonant mode.

8. The electronic device of any one of claims 1-7, further comprising a first frame and a second frame connected in a bent manner, wherein the first radiator is disposed opposite the first frame and the second radiator is disposed opposite the second frame.

9. The electronic device of claim 8, wherein the first frame is slotted and forms a first metal branch as the first radiator; and a gap is formed on the second frame, and a second metal branch is formed to serve as the second radiator.

10. The electronic device of any one of claims 1-7, wherein the electronic device further comprises:

a first body carrying the first and second radiators;

a second body foldable or slidable relative to the first body such that at least a portion of the second body overlaps the first body; a kind of electronic device with high-pressure air-conditioning system

And the third radiator is arranged on the second body, when at least part of the second body is overlapped with the first body, the third radiator is coupled with at least one of the first radiator and the second radiator and supports a preset frequency band signal together, and the electric length of the third radiator is larger than one quarter of the corresponding wavelength of the preset frequency band.