Antenna device and electronic apparatus

Abstract

The utility model discloses an antenna device and electronic equipment. The antenna device comprises a housing assembly and a feed unit. The shell assembly comprises a first radiator and a parasitic branch knot, and the parasitic branch knot and the first radiator are arranged in a spaced mode in the first direction and are arranged in an insulated mode. When the first radiating body is in a first working frequency band, the feed unit is in feed fit with the first radiating body, and the parasitic branch knot is coupled with the first radiating body for feeding, so that the radiating area of the first radiating body is increased. The antenna device can reduce the SAR value while improving the radiation performance, thereby improving the communication quality and electromagnetic radiation safety of the electronic equipment.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic technologies, and particularly to an antenna device and an electronic device. Background Art

[0002] Electronic devices such as mobile phones and tablet computers have become essential technological products in people's lives, studies, and entertainments. With the development of electronic devices, communication quality has gradually become an important consideration for consumers when purchasing electronic devices.

[0003] In related technologies, when an electronic device conducts wireless communication with a base station, a satellite, a wireless device, etc., microwave radiation will be generated. If the microwave radiation amount of the electronic device exceeds the specified microwave hygiene standard, it will cause harm to the human body. Therefore, it is necessary to control the SAR value (Specific Absorption Rate) of the electronic device. Traditional technologies usually reduce the SAR value by reducing the transmission power at the radio frequency end, but this will reduce the radiation performance of the antenna and is not conducive to improving the communication quality of the electronic device. Summary of the Utility Model

[0004] The present disclosure provides an antenna device and an electronic device. The antenna device can reduce the SAR value while enhancing its radiation performance, and thus can improve the communication quality and electromagnetic radiation safety of the electronic device.

[0005] The technical solution is as follows:

[0006] According to a first aspect of an embodiment of the present disclosure, an antenna device is provided, including a housing assembly and a feeding unit. The housing assembly includes a first radiator and a parasitic stub. The parasitic stub is spaced apart from the first radiator along a first direction and is insulated from the first radiator. When the first radiator is in a first operating frequency band, the feeding unit feeds the first radiator in cooperation, and the parasitic stub is coupled to feed the first radiator to increase the radiation area of the first radiator.

[0007] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0008] When the antenna device is in use, it can make full use of the frame of the housing assembly to form the first radiator and the parasitic stub. The parasitic stub is spaced apart from the first radiator along the first direction and is insulated from the first radiator. Furthermore, when the first radiator is operating, the parasitic stub can be coupled to feed the first radiator to increase the radiation area of the first radiator. In this way, while enhancing the radiation performance of the first radiator, the parasitic stub can be used to change the current distribution on the first radiator, redistribute the current from the part close to the human body to the parasitic stub, and reduce the electromagnetic field intensity near the human body, thereby reducing the SAR value.

[0009] The technical solution of the present disclosure will be further described below:

[0010] In one embodiment, when the first radiator is in the first operating frequency band, when the parasitic stub is coupled and fed to the first radiator, it can also make the electric field distribution of the first radiator uniform.

[0011] In one embodiment, the housing assembly includes a second radiator. The parasitic stub is disposed between the first radiator and the second radiator along a first direction. One end of the parasitic stub is spaced from the first radiator, and the other end of the parasitic stub is spaced from the second radiator.

[0012] In one embodiment, the antenna device further includes a low-pass filter. When the first radiator is in the first operating frequency band, the low-pass filter cooperates with the second radiator to boost the first radiator.

[0013] In one embodiment, a connection lug connected to the low-pass filter is provided at an end of the second radiator, and the connection lug is disposed close to the parasitic stub.

[0014] In one embodiment, the housing assembly includes a metal frame.

[0015] The first radiator and the second radiator are frame antennas fixedly provided on the metal frame.

[0016] And / or, the parasitic stub is a frame stub fixed to the metal frame.

[0017] In one embodiment, the housing assembly includes a metal frame. The metal frame is provided with a protection cavity. The first radiator is a frame antenna fixedly provided on the metal frame. The housing assembly includes a carrier plate disposed in the protection cavity. The carrier plate is provided with a grounding layer. The parasitic stub is coupled and overlapped with the grounding layer to form an impedance discharge path.

[0018] In one embodiment, the parasitic stub is a frame stub fixed to the metal frame, and includes a body and a coupling convex portion connected to the body. A gap is formed by spacing the body from the carrier plate, and the coupling convex portion protrudes into the gap in a direction close to the carrier plate.

[0019] In one embodiment, the body is provided with mounting holes for mounting electrical connectors. The coupling convex portion includes at least two and is spaced along the first direction on both sides of the mounting holes.

[0020] In one embodiment, the carrier plate includes a mating convex portion electrically connected to the grounding layer, and the mating convex portion protrudes into the gap in a direction close to the coupling convex portion.

[0021] According to a second aspect of the embodiments of the present disclosure, there is also provided an electronic device, including a control main board and the antenna device in any of the above embodiments. The control main board is disposed in the housing assembly and electrically connected to the feeding unit.

[0022] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0023] When the electronic device is in use, the first radiator can radiate in the first operating frequency band to implement corresponding wireless communication functions. When the first radiator is operating, the parasitic stub is coupled to feed the first radiator, so as to increase the radiation area of the first radiator. Furthermore, the current distribution on the first radiator can be changed. By redistributing the current from the part close to the human body to the parasitic stub, the electromagnetic field intensity near the human body is reduced, thereby reducing the SAR value. In this way, when the electronic device communicates using the first radiator, it has good communication quality. Moreover, when the first radiator is operating, its SAR value is low and it will not cause harm to the human body, improving the electromagnetic radiation safety.

[0024] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The schematic embodiments and descriptions thereof of the present disclosure are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure.

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic structural diagram of an electronic device shown in an embodiment.

[0028] Figure 2 It is a partial schematic structural diagram of a housing assembly shown in an embodiment.

[0029] Figure 3 For Figure 2 An enlarged schematic diagram of the A area shown.

[0030] Figure 4 For Figure 1 A schematic hardware structure diagram of the electronic device shown.

[0031] Description of the reference numerals:

[0032] 10. Electronic device; 11. Processing component; 12. Memory; 13. Power supply component; 14. Multimedia component; 15. Audio component; 16. Input / output interface; 17. Sensor component; 18. Communication component; 10a. Control main board; 10b. Antenna device; 100. Housing component; 110. Metal frame; 111. First radiator; 112. Parasitic stub; 101. Body; 1011. Mounting hole; 102. Coupling protrusion; 113. Second radiator; 1131. Connecting lug; 114. Protection cavity; 120. Carrier board; 121. Ground layer; 122. Matching protrusion; 130. Gap; 200. Feeding unit; 300. Low-pass filter. Detailed implementation manners

[0033] To make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to the accompanying drawings and specific implementation manners. It should be understood that the specific implementation manners described herein are only used to explain the present disclosure and do not limit the protection scope of the present disclosure.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present disclosure belongs. The terms used in the specification of the present disclosure herein are only for the purpose of describing specific implementation manners and are not intended to limit the present disclosure.

[0035] Electronic devices such as mobile phones, tablet computers, and communication watches have become essential technological products in people's lives, learning, and entertainment. There are a wide variety of electronic devices and brands, providing consumers with many choices. How to gain the favor of consumers has become an increasingly important issue for electronic device manufacturers.

[0036] Currently, with the development of electronic devices, communication quality has gradually become an important consideration for consumers when purchasing electronic devices.

[0037] In related technologies, when an electronic device conducts wireless communication with a base station, satellite, wireless device, etc., microwave radiation will be generated. If the microwave radiation amount of the electronic device exceeds the specified microwave hygiene standard, it will cause harm to the human body. Therefore, it is necessary to control the SAR value of the electronic device. Traditional technologies usually reduce the SAR value by reducing the transmission power at the radio frequency end, but this will reduce the radiation performance of the antenna and is not conducive to improving the communication quality of the electronic device. For example, when the transmission power of the antenna is reduced by 1 dB, the corresponding SAR value of the antenna is reduced by about 0.3 W / Kg, and the conduction power is proportional to the SAR value. However, when the conduction power at the radio frequency end is reduced, the transmission efficiency of the antenna will be correspondingly reduced, thereby affecting the radiation performance of the antenna.

[0038] Based on this, it is necessary to provide an antenna device that can improve its radiation performance while reducing the SAR value, thereby improving the communication quality and electromagnetic radiation safety of the electronic device.

[0039] To better understand the antenna device of the present disclosure, the following describes it in conjunction with an electronic device to which the antenna device is applied.

[0040] As Figure 1 shown, in some embodiments, an electronic device 10 is provided, which includes an antenna device 10b and a control main board 10a. The antenna device 10b includes a housing assembly 100 and a feeding unit 200. The housing assembly 100 includes a first radiator 111 and a parasitic stub 112. The parasitic stub 112 is spaced from the first radiator 111 along a first direction and is insulated from the first radiator 111. When the first radiator 111 is in a first operating frequency band, the feeding unit 200 is fed in cooperation with the first radiator 111, and the parasitic stub 112 is coupled to the first radiator 111 for feeding to increase the radiation area of the first radiator 111. The control main board 10a is disposed on the housing assembly 100 and is electrically connected to the feeding unit 200.

[0041] When the electronic device 10 is in use, the first radiator 111 can radiate in the first operating frequency band to achieve corresponding wireless communication functions. When the first radiator 111 is operating, the parasitic stub 112 is coupled to the first radiator 111 for feeding to increase the radiation area of the first radiator 111. Furthermore, the current distribution on the first radiator 111 can be changed. By redistributing the current from the part close to the human body to the parasitic stub 112, the electromagnetic field intensity near the human body is reduced, thereby reducing the SAR value. In this way, when the electronic device 10 communicates using the first radiator 111, it has good communication quality. Moreover, when the first radiator 111 is operating, its SAR value is low, which will not cause harm to the human body and improves the electromagnetic radiation safety.

[0042] The inventor verified through actual debugging and testing that using the technical solution of the present disclosure, under the same conditions, the radiation performance of the first antenna can be improved by 0.52 dB to 2 dB, and the SAD value can be effectively reduced. In particular, when the first antenna operates in a high-frequency band (for example, 4G band, 5G band, etc.), its SAR can be reduced by 2.5 times.

[0043] As Figure 1 shown, the parasitic stub 112 is a frame stub and is provided with a mounting hole 1011 for mounting an electrical connector. This facilitates the connection of the electronic device 10 to an external device through the electrical connector.

[0044] As Figure 1 and Figure 2As shown, the first direction is the X-axis direction. Optionally, the X-axis direction is set in the same direction as the width direction of the electronic device.

[0045] In some embodiments, when the first radiator 111 is in the first operating frequency band, when the parasitic stub 112 is coupled to feed the first radiator 111, it can also make the electric field distribution of the first radiator 111 uniform. In this way, when the first radiator 111 is in the first operating frequency band, the current distribution on the first radiator 111 is more uniform, which helps to reduce hot spots (avoiding excessive local current density), thereby reducing the energy loss caused by hot spots, improving the overall radiation efficiency, and further reducing the SAR value.

[0046] As Figure 2 shown, in some embodiments, the housing assembly 100 includes a second radiator 113. The parasitic stub 112 is disposed between the first radiator 111 and the second radiator 113 along the first direction. One end of the parasitic stub 112 is spaced from the first radiator 111, and the other end of the parasitic stub 112 is spaced from the second radiator 113. In this way, the parasitic stub 112 is suspended between the first radiator 111 and the second radiator 113, which can increase the isolation between the first radiator 111 and the second radiator 113, reduce the parasitic effect, and improve the anti-interference ability of the first radiator 111.

[0047] Further, the antenna device 10b further includes a low-pass filter 300. When the first radiator 111 is in the first operating frequency band, the low-pass filter 300 cooperates with the second radiator 113 to enhance the first radiator 111. In this way, by setting the low-pass filter 300, the interference between the adjacent first radiator 111 and the second radiator 113 can be reduced, and the radiation efficiency of the first radiator 111 can be further improved.

[0048] Optionally, as Figure 2 shown, in some embodiments, the end of the second radiator 113 is provided with a connection lug 1131 connected to the low-pass filter 300, and the connection lug 1131 is disposed close to the parasitic stub 112. In this way, it is convenient to realize the cooperation between the low-pass filter 300 and the second radiator 113 through the connection lug 1131.

[0049] As Figure 2 shown, in some embodiments, the housing assembly 100 includes a metal frame 110. The first radiator 111 and the second radiator 113 are frame antennas fixed on the metal frame 110. In this way, the use of the metal frame 110 can improve the protection performance of the foldable electronic device 10. Integrating the first radiator 111 and the second radiator 113 onto the metal frame 110 can make full use of the thickness space of the housing assembly 100, making the structure of the foldable electronic device 10 more compact.

[0050] Optionally, the parasitic stub 112 is a frame stub fixed to the metal frame 110. In this way, the first radiator 111 and the parasitic stub 112 can be compactly arranged on the metal frame 110. The use of the frame stub can significantly affect the radiation characteristics of the first radiator 111, enabling the first radiator 111 to achieve better communication performance in a limited space.

[0051] During the daily operation of the electronic device 10, it is vulnerable to problems such as lightning, static electricity, and strong electromagnetic interference. For example, the protection problem caused by the body static electricity of the human body in a dry environment, and the static electricity generated by clothing friction can cause the machine to freeze, the screen to go black, and even damage the hardware device. Therefore, it is necessary to improve the static electricity protection performance of the electronic device 10. Combining any of the above embodiments, in some embodiments, the housing assembly 100 includes a metal frame 110, the metal frame 110 is provided with a protection cavity 114, the first radiator 111 and a frame antenna fixed to the metal frame 110. The housing assembly 100 includes a carrier plate 120 disposed in the protection cavity 114, the carrier plate 120 is provided with a grounding layer 121, and the parasitic stub 112 is coupled and overlapped with the grounding layer 121 to form an impedance discharge path. In this way, the metal frame 110 is used to integrate the first radiator 111, and at the same time, the grounding layer 121 on the carrier plate 120 is used to be coupled and overlapped with the parasitic stub 112 to form an impedance discharge path for static electricity, which can improve the electrostatic discharge protection performance of the electronic device 10, and further avoid damage to the active devices or functional modules inside the electronic device 10.

[0052] Optionally, as Figure 2 and Figure 3 shown, in some embodiments, the parasitic stub 112 is a frame stub fixed to the metal frame 110, and includes a body 101 and a coupling convex portion 102 connected to the body 101. The body 101 is spaced apart from the carrier plate 120 to form a gap 130, and the coupling convex portion 102 protrudes towards the carrier plate 120 and is disposed in the gap 130. In this way, the body 101 is used to couple and feed the first radiator 111 to increase the radiation area of the first radiator 111. And the coupling convex portion 102 protrudes towards the carrier plate 120 and is disposed in the gap 130, which is convenient for forming a good coupling overlap with the grounding layer 121, not only establishing a low-impedance current path. Moreover, the parasitic inductance between different reference grounds is reduced, so that an approximately equipotential reference ground is established at different operating frequencies.

[0053] As Figure 1 and Figure 3As shown, in some embodiments, the body 101 is provided with mounting holes 1011 for mounting electrical connectors. The coupling protrusions 102 include at least two and are arranged at intervals on both sides of the mounting holes 1011 along the first direction. In this way, the housing space for mounting the electrical connector can be fully utilized to form parasitic stubs 112 to improve the radiation performance of the first radiator 111 while reducing its SAR value. At the same time, when an abnormal static electricity pulse flows through the body 101 (for example, generated when the electronic device 10 is connected to an external device through an electrical connector), it is convenient to discharge the static electricity to the ground layer 121 through the coupling protrusions 102, which can effectively prevent the active devices or functional modules inside the electronic device 10 from being damaged.

[0054] In addition, the coupling protrusions 102 include at least two and are arranged at intervals on both sides of the mounting holes 1011 along the first direction, which can improve the static electricity discharge efficiency.

[0055] As Figure 2 and Figure 3 As shown, in some embodiments, the carrier plate 120 includes a mating protrusion 122 electrically connected to the ground layer 121. The mating protrusion 122 protrudes into the gap 130 in the direction close to the coupling protrusion 102. In this way, through the cooperation between the mating protrusion 122 and the coupling protrusion 102, there is a sufficient distance between the body 101 and the ground layer 121. At the same time, a good coupling lap can be formed by using the mating protrusion 122 and the coupling protrusion 102, not only establishing a low-impedance current path.

[0056] It can be understood that in the process of manufacturing the frame stub, a die-casting process, a numerical control machining process or other processes are used to manufacture the metal frame 110. Then, a slit is opened in the metal frame 110 to form a gap. The metal frame 110 is divided into a first frame antenna (first radiator 111), a frame stub, and a second frame antenna (second radiator 113) through the gap.

[0057] In some embodiments, the carrier plate 120 is made of a metal material, and the carrier plate 120 and the metal frame 110 cooperate to form a metal middle frame.

[0058] The foldable electronic device 10 of the present disclosure may include a ranging device, a scanning device, a photographing device, a handheld device, a vehicle-mounted device, a wearable device, a monitoring device, a cellular phone, a smart phone, a personal digital assistant computer, a tablet computer, a notebook computer, a laptop computer, a video camera, a video recorder, a camera, a vehicle-mounted computer, and other devices with a display function.

[0059] Referring to Figure 4As shown, in some embodiments, the foldable electronic device 10 further includes at least one or more of the following components: a processing component 11, a memory 12, a power supply component 13, a multimedia component 14, an audio component 15, an input / output interface 16, a sensor component 17, and a communication component 18.

[0060] The processing component generally controls the overall operation of the foldable electronic device, such as operations associated with display, telephone calls, data communication, camera operations, and recording operations. The processing component includes at least one or more processors to execute instructions to complete all or part of the steps of the above methods. In addition, the processing component includes at least one or more modules to facilitate the interaction between the processing component and other components. For example, the processing component includes at least a multimedia module to facilitate the interaction between the multimedia component and the processing component.

[0061] The memory is configured to store various types of data to support the operation of the foldable electronic device. Examples of these data include instructions for any application or method operating on the foldable electronic device, contact data, phone book data, messages, pictures, videos, etc. The memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory, erasable programmable read-only memory, programmable read-only memory, read-only memory, magnetic memory, flash memory, magnetic disk, or optical disk.

[0062] The control main board includes a processing component and a memory.

[0063] The power supply component provides power to various components of the foldable electronic device. The power supply component includes at least a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the foldable electronic device.

[0064] The multimedia component includes the display module of the present disclosure to facilitate human-computer interaction. If the display module includes a touch panel, the display module can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors can not only sense the boundaries of touch or swipe actions but also detect the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component includes a front camera and / or a rear camera. When the foldable electronic device is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front camera and the rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0065] The audio component is configured to output and / or input audio signals. For example, the audio component includes a microphone (MIC), which is configured to receive external audio signals when the foldable electronic device is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in a memory or transmitted via a communication component. In some embodiments, the audio component further includes a speaker for outputting audio signals.

[0066] The input / output interface provides an interface between the processing component and the peripheral interface module, and the peripheral interface module can be a keyboard, a click wheel, buttons, etc. These buttons can include, but are not limited to: a home button, a volume button, a start button, and a lock button.

[0067] The sensor component includes one or more sensors for providing a status assessment of various aspects of the foldable electronic device. For example, the sensor component can detect the open / closed state of the foldable electronic device, the relative positioning of components, such as the display and keypad of the foldable electronic device. The sensor component can also detect a change in the position of the foldable electronic device or a component of the foldable electronic device, the presence or absence of user contact with the foldable electronic device, the orientation or acceleration / deceleration of the foldable electronic device, and the temperature change of the foldable electronic device. The sensor component at least includes a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component also at least includes a photosensitive element, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component further at least includes an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0068] The communication component is configured to facilitate wired or wireless communication between the foldable electronic device and other devices. The foldable electronic device can access a wireless network based on a communication standard, such as Wi-Fi, 2G, 3G, 4G, or 6G, etc., or a combination thereof. In an exemplary embodiment, the communication component receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0069] In the description of the present disclosure, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present disclosure.

[0070] In addition, the terms "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include at least one of such features. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0071] In the present disclosure, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0072] In the present disclosure, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0073] It should be noted that when an element is referred to as "fixed to", "arranged on", "secured to", or "mounted on" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. Further, when an element is considered to be "fixedly connected to" another element, the two can be fixed in a detachable connection manner or a non-detachable connection manner, such as sleeving, clamping, integrally formed fixing, welding, etc., which can be achieved in the prior art and will not be elaborated here.

[0074] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0075] The above embodiments only represent several implementation manners of the present disclosure. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the inventive concept of the present disclosure, several modifications and improvements can still be made, and these all belong to the protection scope of the present disclosure.

Claims

1. An antenna device, characterized in that: include: A housing assembly, the housing assembly comprising a first radiator and a parasitic branch, the parasitic branch being spaced apart from the first radiator along a first direction and being insulated from the first radiator; as well as Feed unit; When the first radiator is in the first working frequency band, the feeding unit cooperates with the first radiator in feeding, and the parasitic branch is coupled with the first radiator for feeding, so as to increase the radiation area of ​​the first radiator.

2. The antenna device according to claim 1, characterized in that When the first radiator is in the first working frequency band, when the parasitic branch is coupled with the first radiator for power feeding, the electric field distribution of the first radiator can be made uniform.

3. The antenna device according to claim 1, characterized in that: The housing assembly includes a second radiator, the parasitic branch is arranged between the first radiator and the second radiator along the first direction, one end of the parasitic branch is spaced apart from the first radiator, and the other end of the parasitic branch is spaced apart from the second radiator.

4. The antenna device according to claim 3, characterized in that: The antenna device further includes a low-pass filter. When the first radiator is in a first operating frequency band, the low-pass filter cooperates with the second radiator to increase the gain of the first radiator.

5. The antenna device according to claim 4, characterized in that: A connecting lug connected to the low-pass filter is provided at the end of the second radiator, and the connecting lug is arranged close to the parasitic branch.

6. The antenna device according to claim 3, characterized in that: The housing assembly includes a metal frame; The first radiator and the second radiator are frame antennas fixed on the metal frame; And / or, the parasitic branches are frame branches fixed to the metal frame.

7. The antenna device according to any one of claims 1 to 6, characterized in that The shell assembly includes a metal frame, the metal frame is provided with a protective cavity, the first radiator is a frame antenna fixed on the metal frame; the shell assembly includes a supporting plate arranged in the protective cavity, the supporting plate is provided with a grounding layer, and the parasitic branch is coupled and overlapped with the grounding layer to form an impedance discharge path.

8. The antenna device according to claim 7, characterized in that: The parasitic branch is a frame branch fixed to the metal frame and includes a main body and a coupling protrusion connected to the main body. The main body and the supporting plate are spaced apart to form a gap, and the coupling protrusion is protruded in the gap toward the supporting plate.

9. The antenna device according to claim 8, characterized in that: The body is provided with a mounting hole for mounting an electrical connector, and the coupling protrusions include at least two and are spaced apart and arranged at both sides of the mounting hole along the first direction.

10. The antenna device according to claim 8, characterized in that: The carrier plate includes a matching protrusion electrically connected to the ground layer, and the matching protrusion is protruding in the gap toward a direction close to the coupling protrusion.

11. An electronic device, characterized in that: It comprises a control mainboard and the antenna device according to any one of claims 1 to 10, wherein the control mainboard is arranged on the housing assembly and is electrically connected to the feeding unit.

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