Antenna device and electronic device

Abstract

The embodiment of the present application provides an antenna device and an electronic device, the antenna device comprises: a first radiator used for transmitting a first excitation signal; a second radiator used for transmitting a second excitation signal, the second radiator is connected with the first radiator to jointly transmit a third excitation signal; and a first line used for forming a distributed inductance and a first distributed capacitance, which jointly isolate the third excitation signal from the first excitation signal and the second excitation signal. The antenna device provided by the embodiment of the present application can ensure that the third excitation signal is isolated from the first excitation signal and the second excitation signal, thereby improving the isolation degree when the first radiator and the second radiator perform wireless communication. In addition, the first radiator and the second radiator do not need to be separately provided with an isolation inductance, so that the material can be saved, the cost can be reduced, and the occupation of the internal layout space of the electronic device can be reduced.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an antenna device and electronic device. Background Technology

[0002] With the development of electronic technology, electronic devices such as smartphones can support more and more communication modes, such as 4G communication, 5G communication, Near Field Communication (NFC), Wireless Fidelity (Wi-Fi) communication, and Bluetooth (BT) communication. Therefore, electronic devices need to have more antennas to realize these communication functions.

[0003] Therefore, ensuring the isolation between different antennas has become a challenge. Summary of the Invention

[0004] This application provides an antenna device and an electronic device that can improve the isolation between the first radiator and the second radiator when they conduct wireless communication, and can also save materials, reduce costs, and reduce the space occupied in the internal layout of the electronic device.

[0005] This application provides an antenna device, including:

[0006] The first radiator is used to transmit the first excitation signal;

[0007] A second radiator is used to transmit a second excitation signal. The second radiator is connected to the first radiator to jointly transmit a third excitation signal, which is different from both the first and second excitation signals.

[0008] A first line is connected to the first radiator and the second radiator. The first line forms a distributed inductance and a first distributed capacitance. The distributed inductance and the first distributed capacitance together isolate the third excitation signal from the first excitation signal and the second excitation signal.

[0009] This application also provides an electronic device including the antenna device described above.

[0010] The antenna device provided in this application embodiment forms a distributed inductance and a first distributed capacitance through a first line, thereby isolating the third excitation signal from the first and second excitation signals. This ensures mutual isolation between the third excitation signal and the first and second excitation signals, thus improving the isolation between the first and second radiators during wireless communication. Furthermore, no separate isolation inductor is needed between the first and second radiators, saving materials, reducing costs, and minimizing the space occupied within the electronic device's internal layout. This also reduces the requirements for the motherboard, which is more conducive to productization in the context of increasingly limited motherboard space. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of a first structure of an electronic device provided in an embodiment of this application.

[0013] Figure 2 This is a schematic diagram of a second structure of an electronic device provided in an embodiment of this application.

[0014] Figure 3 This is a schematic diagram of a first partial structure of the antenna device provided in an embodiment of this application.

[0015] Figure 4 This is a schematic diagram of a second partial structure of the antenna device provided in an embodiment of this application.

[0016] Figure 5 for Figure 4 A schematic diagram of the second circuit of the antenna device shown.

[0017] Figure 6 This is a schematic diagram of a third partial structure of the antenna device provided in the embodiments of this application.

[0018] Figure 7 for Figure 6 A schematic diagram of the second circuit of the antenna device shown.

[0019] Figure 8 This is a schematic diagram of a fourth partial structure of the antenna device provided in the embodiments of this application.

[0020] Figure 9 This is a fifth partial structural diagram of the antenna device provided in the embodiments of this application.

[0021] Figure 10 This is a schematic diagram of a sixth partial structure of the antenna device provided in the embodiments of this application.

[0022] Figure 11 This is a schematic diagram of a third structure of an electronic device provided in an embodiment of this application.

[0023] Figure 12 This is a schematic diagram of the structure of the housing of an electronic device provided in an embodiment of this application. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] This application provides an electronic device. The electronic device can be a smartphone, tablet computer, or other similar device, as well as a gaming device, AR (Augmented Reality) device, automotive device, data storage device, audio playback device, video playback device, laptop computer, desktop computing device, etc.

[0026] refer to Figure 1 , Figure 1 This is a first structural schematic diagram of an electronic device 20 provided in an embodiment of this application. The electronic device 20 includes a display screen 22, a housing 24, a circuit board 26, and a battery 28.

[0027] The display screen 22 is disposed on the housing 24 to form the display surface of the electronic device 20, and is used to display information such as images and text. The display screen 22 can be a liquid crystal display (LCD) or an organic light-emitting diode (OLED) display screen, etc.

[0028] Understandably, a cover plate can also be provided on the display screen 22 to protect it from scratches or water damage. The cover plate can be a transparent glass cover, allowing the user to observe the content displayed on the display screen 22 through it. For example, the cover plate can be made of sapphire glass.

[0029] The housing 24 forms the external outline of the electronic device 20 to accommodate the electronic components and functional parts of the electronic device 20, while also providing a seal and protection for the internal electronic components and functional parts of the electronic device. The housing 24 and the display screen 22 can together form a receiving space, in which the circuit boards, batteries, motors, acceleration sensors, and other functional components of the electronic device 20 can be housed.

[0030] Circuit board 26 is disposed within the housing space formed by housing 24 and display screen 22. Circuit board 26 can be the motherboard of electronic device 20. Circuit board 26 may integrate one or more functional components such as a processor, headphone jack, accelerometer, gyroscope, and motor. Simultaneously, display screen 22 can be electrically connected to circuit board 26 to control the display on display screen 22 via the processor on circuit board 26.

[0031] The battery 28 is housed within the space formed by the housing 24 and the display screen 22. The battery 28 is electrically connected to the circuit board 26 to power the electronic device 20. The circuit board 26 may contain a power management circuit. This power management circuit distributes the voltage supplied by the battery 28 to the various electronic components of the electronic device 20.

[0032] The electronic device 20 also includes an antenna device. The antenna device is used to enable the wireless communication function of the electronic device 20, such as 4G communication, 5G communication, Near Field Communication (NFC), Wireless Fidelity (Wi-Fi) communication, Bluetooth (BT) communication, etc.

[0033] refer to Figure 2 , Figure 2 This is a schematic diagram of a second structure of the electronic device 20 provided in an embodiment of this application. The electronic device 20 is provided with an antenna device 40, which includes IC1 42, IC2 44, a first radiator 46, a second radiator 48, and a first line 52.

[0034] IC1 42 is used to provide a first excitation signal. The first excitation signal can be any one of a 4G excitation signal, a 5G excitation signal, an NFC excitation signal, a Wi-Fi excitation signal, or a BT excitation signal, and IC1 42 can be a corresponding 4G communication chip, 5G communication chip, NFC communication chip, Wi-Fi communication chip, BT communication chip, etc.

[0035] IC244 is used to provide a second excitation signal. The second excitation signal can also be any one of the following: 4G excitation signal, 5G excitation signal, NFC excitation signal, Wi-Fi excitation signal, and BT excitation signal. IC244 can be a corresponding 4G communication chip, 5G communication chip, NFC communication chip, Wi-Fi communication chip, BT communication chip, etc.

[0036] In some embodiments, the frequency of the first excitation signal is different from the frequency of the second excitation signal. For example, the first excitation signal can be a high-frequency 4G excitation signal, and the second excitation signal can be a mid-to-low frequency 4G excitation signal.

[0037] It should be noted that since electronic devices typically only have one NFC communication chip, one Wi-Fi communication chip, and one BT communication chip, one of IC1 42 and IC2 44 can be set as an NFC communication chip, a Wi-Fi communication chip, or a BT communication chip, while the other can be set as a different communication chip.

[0038] The first radiator 46 is electrically connected to IC1 42. The first radiator 46 is used to transmit a first excitation signal to realize the corresponding communication function, such as 4G communication. Understandably, the first radiator 46 can be grounded, for example, by connecting it to the common ground on the circuit board 26 through a metal spring to form a signal loop.

[0039] The second radiator 48 is electrically connected to IC2 44. The second radiator 48 is used to transmit a second excitation signal to realize the corresponding communication function, such as 5G communication. Understandably, the second radiator 48 can also be grounded, for example, by connecting it to the common ground on the circuit board 26 through a metal spring to form a signal loop.

[0040] Both the first radiator 46 and the second radiator 48 can be conductive structures made of metal, such as copper or aluminum, or metal lines in an FPC (Flexible Printed Circuit), or printed lines on a circuit board. For example, in some embodiments, one or both of the first radiator 46 and the second radiator 48 can be formed by a metal structure in the electronic device 20 or printed lines on the circuit board 26.

[0041] The first line 52 is connected to the first radiator 46 and the second radiator 48. The first line 52 can be a metal line in an FPC, a printed circuit on a circuit board, or a wire. The first line 52 can be a wound wire or a straight line including extended branches. The first line 52 forms a distributed inductance and a first distributed capacitance, which together isolate the first excitation signal transmitted by the first radiator 46 from the second excitation signal transmitted by the second radiator 48.

[0042] Understandably, to achieve better isolation, the first line 52 can be configured according to the frequencies of the first and second excitation signals. For example, the winding form, length, and width of the first line 52 can be adjusted to ensure that the inductance value of the distributed inductor and the capacitance value of the first distributed capacitor reach the required values. Since the first line 52 can form a distributed inductance and a first distributed capacitance, thereby isolating the first excitation signal from the second excitation signal, the first line 52 can be equivalent to an LC filter circuit or a filter.

[0043] For example, when the inductance of the distributed inductor is 18nH and the capacitance of the first distributed capacitor is 1.8pF, the cutoff frequency of the filter is calculated according to the formula. The cutoff frequency can be calculated to be approximately 0.88 GHz. At this point, signals higher than 0.88 GHz will be filtered out. Therefore, isolation between the first and second excitation signals can be achieved simply by ensuring that the frequencies of both the first and second excitation signals are greater than 0.88 GHz.

[0044] The antenna device 40 provided in this embodiment forms a distributed inductance and a first distributed capacitance through a first line 52, isolating the first excitation signal from the second excitation signal. This ensures mutual isolation between the two excitation signals, thereby improving the isolation between the first radiator 46 and the second radiator 48 during wireless communication. Furthermore, no separate isolation inductor is needed between the first radiator 46 and the second radiator 48, saving materials, reducing costs, and minimizing the space required for the internal layout of electronic devices. This also reduces the requirements for the motherboard, which is more conducive to productization in the context of increasingly limited motherboard space.

[0045] In some embodiments, reference Figure 3 , Figure 3 This is a schematic diagram of a first partial structure of the antenna device 40 provided in an embodiment of this application.

[0046] The first line 52 includes multiple sequentially connected bent segments 522 to form a winding, thereby forming a distributed inductance and a first distributed capacitance in the first line 52. The inductance value of the distributed inductance and the capacitance value of the first distributed capacitance can be controlled by the total length of the first line 52 and the winding configuration (e.g., the spacing between parallel lines) to achieve the desired inductance and capacitance values.

[0047] It is understandable that the bending form, line length, etc. of each bending segment 522 can be the same or different, and this application does not limit this.

[0048] In this embodiment, the first line 52 can form a distributed inductance and a first distributed capacitance by bending, and the line form is simple and easy to implement.

[0049] In some embodiments, reference is also made to Figures 4 to 7 , Figure 4 This is a schematic diagram of a second partial structure of the antenna device 40 provided in an embodiment of this application. Figure 5 for Figure 4 A schematic diagram of the second circuit of the antenna device 40 shown. Figure 6 This is a schematic diagram of a third partial structure of the antenna device 40 provided in an embodiment of this application. Figure 7 for Figure 6 A schematic diagram of the second circuit of the antenna device 40 shown.

[0050] The antenna device 40 also includes a second line 54, which is connected to the first radiator 46 or the second radiator 48. The second line 54 can be a metal line in an FPC, a printed circuit on a circuit board, or a wire.

[0051] The second line 54 is coupled to the first line 52 to form a second distributed capacitance. This distributed inductance, the first distributed capacitance, and the second distributed capacitance together isolate the first excitation signal from the second excitation signal.

[0052] For example, in some embodiments, the second line 54 forms at least one semi-enclosed structure, for example Figure 5 The semi-enclosed structure 542 shown is another example. Figure 7 Multiple semi-enclosed structures 542 are shown. Each semi-enclosed structure 542 surrounds the periphery of a bent segment 522 to couple the second line 54 with the first line 52. The form, size, and spacing between the semi-enclosed structure 542 and the bent segment 522 can be adjusted according to actual needs.

[0053] Understandably, this is based on the formula for calculating the cutoff frequency of a filter. By setting the second line 54, a second distributed capacitance is formed, which is equivalent to connecting a second distributed capacitance in parallel. Compared with not setting the second line 54, the overall capacitance value can be increased. Under the same cutoff frequency, the required inductance value can be reduced, that is, the required inductance value of the aforementioned distributed inductance is reduced. Therefore, the DC resistance (DCR) of the first line 52 can be reduced, thereby reducing the impact on the wireless communication function of the antenna device 40.

[0054] In some embodiments, reference is also made to Figure 8 , Figure 8 This is a schematic diagram of a fourth partial structure of the antenna device 40 provided in an embodiment of this application.

[0055] Among them, the second line 54 consists of multiple lines, for example... Figure 8 The two second lines 54 shown represent a π-type circuit, where the first line 52 and the two second lines 54 can be equivalent to one. Some of the second lines 54 can be connected to the first radiator 46, and others can be connected to the second radiator 48. For example, one of the two second lines 54 is connected to the first radiator 46, and the other is connected to the second radiator 48. Multiple second lines 54 are coupled to the first line 52 to collectively form the aforementioned second distributed capacitance. The semi-enclosed structures 542 formed by the different second lines 54 surround the periphery of different bends 522.

[0056] In some embodiments, reference Figure 9 , Figure 9 This is a fifth partial structural diagram of the antenna device 40 provided in an embodiment of this application.

[0057] The first line 52 includes a connecting section 524 and an extension section 526. The connecting section 524 is connected to the first radiator 46 and the second radiator 48. The connecting section 524 forms the aforementioned distributed inductance. One end of the extension section 526 is connected to the connecting section 524, and the other end of the extension section 526 is left floating. The extension section 526 forms the aforementioned first distributed capacitance.

[0058] According to Richard's rule, an inductor can be equivalent to... In a short circuit, the capacitor can be equivalent to The first line 52 is an open circuit. Since the connecting section 524 is a short circuit, it can be considered equivalent to an inductor, i.e., the aforementioned distributed inductance; the extension section 526 is an open circuit, therefore it can be considered equivalent to a capacitor, i.e., the aforementioned first distributed capacitance. Therefore, the first line 52 can be considered equivalent to a low-pass filter. This refers to the wavelength corresponding to the cutoff frequency of the equivalent low-pass filter. The inductance value of the distributed inductor can be adjusted by changing the length of the connecting section 524; the capacitance value of the first distributed capacitor can be adjusted by changing the width of the extension section 526. Therefore, by adjusting the length of the connecting section 524 and the width of the extension section 526, an equivalent low-pass filter that meets the requirements can be designed, isolating the first excitation signal from the second excitation signal.

[0059] In some embodiments, reference is also made to Figure 10 , Figure 10 This is a sixth partial structural diagram of the antenna device 40 provided in the embodiments of this application.

[0060] There are multiple extension segments 526. These multiple extension segments 526 are spaced apart, meaning they are connected to the connecting segment 524 at different locations. The multiple extension segments 526 together form the first distributed capacitance. The length and width of the multiple extension segments 526 can be the same or different.

[0061] Understandably, by forming the first distributed capacitance together through multiple extension segments 526, the width of each extension segment 526 can be adjusted, thus enabling a more precise adjustment of the capacitance value of the first distributed capacitance.

[0062] In some embodiments, at least one of the first radiator 46 and the second radiator 48 is further used to transmit a third excitation signal, thereby enabling multiplexing of at least one of the first radiator 46 and the second radiator 48. For example, the second radiator 48 is connected to the first radiator 46 to jointly transmit the third excitation signal, wherein the third excitation signal is different from both the first and second excitation signals. The aforementioned distributed inductance and the first distributed capacitance also jointly isolate the third excitation signal from the first and second excitation signals. In some embodiments, the third excitation signal is an NFC excitation signal. Since the frequency of the NFC excitation signal is low, at 13.56MHz, signals greater than 0.88GHz will be filtered out according to the above example. Therefore, the NFC excitation signal can pass through the aforementioned first line 52, thereby transmitting the NFC excitation signal through the first radiator 46 and / or the second radiator 48.

[0063] Understandably, when the antenna device 40 includes one or more second lines 54, the aforementioned distributed inductance, first distributed capacitance, and second distributed capacitance together isolate the first excitation signal, the second excitation signal, and the third excitation signal.

[0064] The antenna device 40 provided in this application embodiment forms a distributed inductance and a first distributed capacitance through the first line 52, isolating the third excitation signal from the first and second excitation signals. This ensures mutual isolation between the third excitation signal and the first and second excitation signals, thereby improving the isolation between the first radiator 46 and the second radiator 48 during wireless communication. Furthermore, no separate isolation inductor is needed between the first radiator 46 and the second radiator 48, saving materials, reducing costs, and minimizing the space occupied within the electronic device's internal layout. This also reduces the requirements for the motherboard, which is more conducive to productization in the context of increasingly limited motherboard space.

[0065] refer to Figure 11 , Figure 11 This is a schematic diagram of a third structure of the electronic device 20 provided in an embodiment of this application.

[0066] The antenna device 40 also includes a near-field communication chip (NFC IC) 56 and an antenna coil 58. The antenna coil 58 is electrically connected to the first radiator 46, and the NFC IC 56 is electrically connected to both the antenna coil 58 and the second radiator 48. The antenna coil 58 can be a coil formed by winding wire, such as a coil formed by winding wire made of copper or aluminum.

[0067] The NFC IC 56 provides the NFC excitation signal. The antenna coil 58, the first radiator 46, and the second radiator 48 are used together to transmit the NFC excitation signal to realize the NFC function of the electronic device 20. At this time, both the first radiator 46 and the second radiator 48 are used to transmit the NFC excitation signal, i.e., the aforementioned third excitation signal, thereby enabling the multiplexing of the first radiator 46 and the second radiator 48.

[0068] Understandably, since the first line 52 is connected between the first radiator 46 and the second radiator 48, the first line 52 forms a distributed inductance and a first distributed capacitance. By adjusting the form and size of the first line 52, a suitable equivalent low-pass filter can be obtained. Therefore, the first excitation signal, the second excitation signal and the NFC excitation signal can be isolated, improving the isolation between each excitation signal, thereby ensuring that different communication functions do not interfere with each other.

[0069] In this embodiment, by transmitting the NFC excitation signal together through the antenna coil 58, the first radiator 46, and the second radiator 48, the NFC card-swiping function can be realized at the positions on the electronic device 20 corresponding to the antenna coil 58, the first radiator 46, and the second radiator 48, thereby increasing the NFC card-swiping area and improving the convenience of the NFC function.

[0070] Understandably, in some embodiments, the antenna coil 58 may not be provided. In this case, the NFC IC 56 is connected to the first radiator 46 and the second radiator 48, and the NFC excitation signal is transmitted jointly through the first radiator 46 and the second radiator 48 to realize the NFC function.

[0071] In some embodiments, reference Figure 12 , Figure 12 This is a schematic diagram of the structure of the housing 24 of the electronic device provided in the embodiment of this application.

[0072] The housing 24 includes a metal frame 242 and a back cover 244, which are connected by a structure such as a mid-frame. The metal frame 242 forms the outer frame of the electronic device 20 and can be made of materials such as magnesium or aluminum, or an alloy. The back cover 244 is a non-metallic back cover, such as a back cover made of plastic or glass.

[0073] Metal branches 2422 are formed on the metal frame 242. For example, slits 2424 and 2426 can be formed on the metal frame 242, and metal branches 2422 can be formed through the slits 2424 and 2426. Either the first radiator 46 or the second radiator 48 can be formed through the metal branches 2422.

[0074] Understandably, in some embodiments, multiple metal branches can be formed on the metal frame 242, for example, two metal branches can be formed, one of which forms the first radiator 46 and the other forms the second radiator 48. Therefore, the first radiator 46 and the second radiator 48 can be formed simultaneously by the metal branches on the metal frame 242, eliminating the need to set up separate radiators, thus achieving full reuse of the metal frame 242 and simplifying the design of the antenna device 40.

[0075] In some embodiments, the electronic device 20 further includes a flexible printed circuit board (FPC). The FPC can be, for example, an FPC for a display screen, an FPC for a camera, an FPC for a motor, or similar structures. The FPC is provided with metal traces, such as copper traces, which can form either the first radiator 46 or the second radiator 48.

[0076] Understandably, in some embodiments, multiple metal lines can be provided on the FPC, such as two metal lines, one of which forms a first radiator 46 and the other forms a second radiator 48.

[0077] In the description of this application, it should be understood that terms such as “first” and “second” are used only to distinguish similar objects and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0078] The antenna device and electronic device provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application, and the descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An antenna device, characterized in that, include: The first radiator is used to transmit the first excitation signal; The second radiator is used to transmit the second excitation signal. The second radiator is connected to the first radiator to jointly transmit the third excitation signal. The third excitation signal is different from both the first and second excitation signals. The first and second excitation signals are any one of 4G, 5G, Wi-Fi, and Bluetooth excitation signals. The third excitation signal is a near-field communication excitation signal. A first line is disposed in the gap between the first radiator and the second radiator and connected to the first radiator and the second radiator. The first line forms a distributed inductance and a first distributed capacitance. The distributed inductance and the first distributed capacitance together allow the third excitation signal to pass through the first line and block the first excitation signal and the second excitation signal from passing through the first line, thereby isolating the third excitation signal from the first excitation signal and the second excitation signal. The second line is connected to the first radiator or the second radiator. The second line is coupled to the first line to form a second distributed capacitance. The second distributed capacitance makes the overall capacitance value of the first line and the second line greater than the capacitance value of the first line. The distributed inductance, the first distributed capacitance, and the second distributed capacitance together isolate the third excitation signal from the first excitation signal and the second excitation signal.

2. The antenna device according to claim 1, characterized in that, The first line includes a plurality of sequentially connected bends to form the distributed inductance and the first distributed capacitance.

3. The antenna device according to claim 2, characterized in that, The second line forms at least one semi-enclosed structure, each of the semi-enclosed structures surrounding the periphery of one of the bends, so that the second line is coupled to the first line.

4. The antenna device according to claim 3, characterized in that, There are multiple second lines, and each of the multiple second lines is coupled to the first line to jointly form the second distributed capacitance. The semi-enclosed structures formed by the different second lines surround the periphery of the different bending segments.

5. The antenna device according to claim 1, characterized in that, The first line includes a connecting section and an extension section; The connecting segment is connected to the first radiator and the second radiator, and the connecting segment forms the distributed inductance; One end of the extension is connected to the connecting segment, and the other end of the extension is suspended, forming the first distributed capacitance.

6. The antenna device according to claim 5, characterized in that, The extension segment is multiple, and the multiple extension segments are spaced apart, and the multiple extension segments together form the first distributed capacitance.

7. The antenna device according to any one of claims 1 to 6, characterized in that, The frequency of the first excitation signal is different from the frequency of the second excitation signal.

8. The antenna device according to claim 1, characterized in that, Also includes: The antenna coil is electrically connected to the first radiator; A near-field communication chip is electrically connected to the antenna coil and the second radiator, and the near-field communication chip is used to provide the near-field communication excitation signal; The antenna coil, the first radiator, and the second radiator are used to jointly transmit the near-field communication excitation signal.

9. An electronic device, characterized in that, Includes the antenna device according to any one of claims 1 to 8.

10. The electronic device according to claim 9, characterized in that, It also includes a metal frame on which metal branches are formed, the metal branches forming at least one of the first radiator and the second radiator.

11. The electronic device according to claim 9, characterized in that, It also includes a flexible circuit board on which metal lines are disposed, the metal lines forming at least one of the first radiator and the second radiator.

Images