Electronic device

Abstract

The invention relates to an electronic device. The electronic equipment comprises a first main body part and a second main body part, wherein the second main body part can be in a folded state or an unfolded state relative to the first main body part; the first antenna radiator is arranged on the first main body part or the second main body part; the second antenna radiator is arranged on the first main body part or the second main body part, and the first antenna radiator and the second antenna radiator both support a target frequency band; wherein under the condition that the second main body part is in a folded state or an unfolded state relative to the first main body part, the first antenna radiator and the second antenna radiator are both located on different sides of the electronic equipment. According to the technical scheme, the antenna performance of the foldable electronic equipment can be improved.

Description

Technical Field

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

[0002] Currently, foldable electronic devices are highly sought after. Taking foldable phones as an example, compared to conventional phones, foldable phones have a main screen and a secondary screen. As the main screen and secondary screen are folded and unfolded, the foldable phone can also be in a folded or unfolded state.

[0003] With the changing form of electronic devices, improving the antenna performance of foldable electronic devices has become a current research hotspot. Summary of the Invention

[0004] Therefore, it is necessary to provide an electronic device that can improve the antenna performance of foldable electronic devices.

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

[0006] The first main body and the second main body, wherein the second main body can be folded or unfolded relative to the first main body;

[0007] The first antenna radiator is disposed in the first main body or the second main body;

[0008] The second antenna radiator is disposed on the first main body or the second main body, and both the first antenna radiator and the second antenna radiator support the target frequency band.

[0009] In the case where the second main body is in a folded or unfolded state relative to the first main body, the first antenna radiator and the second antenna radiator are located on different sides of the electronic device.

[0010] The aforementioned electronic device includes a first main body and a second main body. The second main body is foldable or unfoldable relative to the first main body, meaning the electronic device is foldable. The electronic device also includes a first antenna radiator and a second antenna radiator, both of which support a target frequency band, such as Wi-Fi (Wireless). The Fidelity (wireless fidelity) frequency band includes mid-to-high frequency bands and low frequency bands. A first antenna radiator is located on either the first or second main body, and a second antenna radiator is also located on either the first or second main body. When the second main body is folded or unfolded relative to the first main body, the first and second antenna radiators are located on different sides of the electronic device. For example, the first and second antenna radiators are both located on different sides of the first main body, or vice versa. Thus, when the second main body is folded or unfolded relative to the first main body, the first and second antenna radiators are located on different sides of the electronic device. Alternatively, the first antenna radiator may be located on one sub-frame of the first main body, and the second antenna radiator may be located on another sub-frame of the second main body, regardless of whether the second main body is folded or unfolded relative to the first main body. In this configuration, the two sub-frames do not overlap, ensuring that when the second main body is folded relative to the first main body, the first and second antenna radiators are located on different sides of the electronic device. Similarly, when the second main body is unfolded relative to the first main body, the first and second antenna radiators remain on different sides of the electronic device. This means that even if one antenna radiator (e.g., the first antenna radiator) is blocked in either the folded or unfolded state, the antenna radiators on other sides (e.g., the second antenna radiator) can still meet usage requirements. This avoids having all antenna radiators on the same side of the electronic device. For example, in candybar phones, the Wi-Fi antenna is often designed to be on the same side, which can easily block the antenna radiators when the user holds the device, resulting in poor antenna performance. This embodiment improves the antenna performance of the foldable electronic device in both folded and unfolded states. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology 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 the electronic device in an unfolded state according to one embodiment of this application;

[0013] Figure 2 This is a schematic diagram of the electronic device in a folded state according to one embodiment of this application;

[0014] Figure 3 This is a schematic diagram of the electronic device in an unfolded state in another embodiment of this application;

[0015] Figure 4 This is a schematic diagram of the electronic device in a folded state in another embodiment of this application;

[0016] Figure 5 This is a schematic diagram of the electronic device in an unfolded state in another embodiment of this application;

[0017] Figure 6 This is a schematic diagram of the electronic device in an unfolded state in another embodiment of this application;

[0018] Figure 7 This is a schematic diagram of the electronic device in a folded state in another embodiment of this application;

[0019] Figure 8 This is a schematic diagram of the electronic device in an unfolded state in another embodiment of this application;

[0020] Figure 9 This is a schematic diagram of the electronic device in an unfolded state in another embodiment of this application;

[0021] Figure 10 This is a schematic diagram of the switching circuit configuration in another embodiment of this application;

[0022] Figure 11a A schematic diagram showing the current directions in the first radiating part, the first parasitic part, and the second parasitic part of an electronic device when no tuning circuit is used.

[0023] Figure 11b A schematic diagram showing the current directions in the first radiating part, the first parasitic part, and the second parasitic part after the resonant frequency of the second parasitic part is adjusted using a tuning circuit for an electronic device.

[0024] Figure 12a A schematic diagram showing the system radiation efficiency when electronic devices do not employ tuning circuits;

[0025] Figure 12b This diagram illustrates a comparison of the system radiation efficiency of electronic devices in the B1, B3, and W24 bands with and without a tuning circuit when the device is in a folded state.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100 - Electronic device; 10 - First main body; 101 - First side sub-frame; 102 - First top sub-frame; 103 - Third side sub-frame; 11 - Second main body; 111 - Second side sub-frame; 112 - Second top sub-frame; 113 - Fourth side sub-frame; 114 - Switching circuit; 12 - First antenna radiator; 121 - First radiating part; 122 - Second radiating part; 13 - Second antenna radiator; 131 - First radiator; 132 - Second radiator; 14 - Rotating shaft; 15 - Third antenna radiator; 161 - First parasitic part; 162 - Second parasitic part. Detailed Implementation

[0028] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the application. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0029] It is understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0030] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0031] It is understandable that "at least one" refers to one or more, and "multiple" refers to two or more. "At least a part of an element" refers to part or all of an element.

[0032] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0033] In the development of electronic devices, new forms of electronic devices have gradually become popular and sought after by users. Take foldable phones as an example. Compared with conventional phones, foldable phones have a main screen and a secondary screen. As the main screen and the secondary screen are folded and unfolded, the foldable phone can also be in a folded or unfolded state.

[0034] Unlike flat-screen electronic devices where antenna performance is only a concern in the unfolded state, foldable electronic devices, as the outer screen grows larger, its functions become increasingly diverse, mirroring those of the inner screen. This means that user demands for the device increase even in the folded state. Therefore, to meet these demands, antenna performance must be considered in both the unfolded and folded states. Consequently, improving the antenna performance of foldable electronic devices in both their unfolded and folded states has become a current research hotspot.

[0035] To address the aforementioned problems, this application provides an electronic device. This electronic device can be a foldable display device or a foldable non-display device. Examples of foldable electronic devices include foldable mobile phones, foldable tablets, foldable e-readers, and foldable electronic display screens. This application uses a foldable mobile phone as an example; other devices can be found in the specific descriptions within this application.

[0036] The electronic device 100 of this application embodiment includes a first main body 10 and a second main body 11. The first main body 10 and the second main body 11 are the main structure of the electronic device 100, and the combination of the first main body 10 and the second main body 11 is consistent with the shape of the electronic device 100.

[0037] The second main body 11 can be folded or unfolded relative to the first main body 10, and the first main body 10 and the second main body 11 can form a folded structure of the electronic device 100.

[0038] For example, see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of an exemplary electronic device 100 in an unfolded state. Figure 2 for Figure 1A schematic diagram of the corresponding electronic device 100 in a folded state. Figure 1 and Figure 2 The electronic device 100 shown is a small foldable mobile phone that can be folded vertically.

[0039] For example, see Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of another exemplary electronic device 100 in its deployed state. Figure 4 for Figure 3 A schematic diagram of the corresponding electronic device 100 in a folded state. Figure 3 and Figure 4 The electronic device 100 shown is a large foldable mobile phone that can be folded horizontally.

[0040] The following are all combined Figure 1 and Figure 2 The implementation methods of the embodiments of this application will be described.

[0041] In this embodiment of the application, the second main body 11 can be folded relative to the first main body 10. The folded state can refer to the state when the included angle between the second main body 11 and the first main body 10 is less than or equal to a first angle threshold. The first angle threshold can be a small angle value, such as less than 90° and greater than or equal to 0°. The first angle threshold is, for example, 10°, 5°, 0°, etc.

[0042] The second main body 11 can be in an unfolded state relative to the first main body 10. The unfolded state can refer to the state when the included angle between the second main body 11 and the first main body 10 is greater than or equal to a second angle threshold. The second angle threshold can be a large angle value, for example, greater than 90° and less than or equal to 180°. The second angle threshold is, for example, 170°, 175°, 180°, etc.

[0043] In this embodiment of the application, the electronic device 100 further includes a first antenna radiator 12 and a second antenna radiator 13. The first antenna radiator 12 is disposed on the first main body 10 or the second main body 11, and the second antenna radiator 13 is disposed on the first main body 10 or the second main body 11. Both the first antenna radiator 12 and the second antenna radiator 13 support the target frequency band, that is, both the first antenna radiator 12 and the second antenna radiator 13 can be used to radiate signals of the target frequency band.

[0044] The target frequency band can be a Wi-Fi band (e.g., Wi-Fi 2.4G and / or Wi-Fi 5G), a Bluetooth band, a middle high band (MHB), a low band (LB), etc. It should be noted that, in addition to both the first antenna radiator 12 and the second antenna radiator 13 supporting the target frequency band (e.g., the Wi-Fi band), the first antenna radiator 12 can also support band A, and the second antenna radiator 13 can also support band B, etc. No specific restrictions are placed on the frequency bands supported by the first antenna radiator 12 and the second antenna radiator 13.

[0045] In this embodiment, when the second main body 11 is folded or unfolded relative to the first main body 10, the first antenna radiator 12 and the second antenna radiator 13 are located on different sides of the electronic device 100. That is, when the second main body 11 is unfolded relative to the first main body 10, the first antenna radiator 12 and the second antenna radiator 13 are located on different sides of the electronic device 100. Furthermore, when the second main body 11 is folded relative to the first main body 10, the first antenna radiator 12 and the second antenna radiator 13 are still located on different sides of the electronic device 100, and the folding of the electronic device 100 will not cause the first antenna radiator 12 and the second antenna radiator 13 to be on the same side of the electronic device 100.

[0046] Optionally, the first antenna radiator 12 and the second antenna radiator 13 can both be disposed on different sides of the first main body 10. Alternatively, the first antenna radiator 12 and the second antenna radiator 13 can both be disposed on different sides of the second main body 11. In this way, when the second main body 11 is in a folded or unfolded state relative to the first main body 10, the first antenna radiator 12 and the second antenna radiator 13 are located on different sides of the electronic device 100. Alternatively, the first antenna radiator 12 and the second antenna radiator 13 can also be disposed on different main bodies. For example, the first antenna radiator 12 is disposed on the first main body 10, for example, on one sub-frame of the first main body 10, and the second antenna radiator 13 is disposed on another sub-frame of the second main body 11. Regardless of whether the second main body 11 is in a folded or unfolded state relative to the first main body 10, the two sub-frames will not overlap on the same side of the electronic device. This also ensures that when the second main body 11 is in a folded state relative to the first main body 10, the first antenna radiator 12 and the second antenna radiator 13 are located on different sides of the electronic device 100.

[0047] The following description, in conjunction with the accompanying drawings, describes the placement of the first antenna radiator 12 and the second antenna radiator 13 within the electronic device 100.

[0048] For example, please see Figure 5 The electronic device 100 also includes a pivot 14. The first main body 10 includes a first side sub-frame 101, a first top sub-frame 102, and a third side sub-frame 103 connected in sequence. The second main body 11 includes a second side sub-frame 111, a second top sub-frame 112, and a fourth side sub-frame 113 connected in sequence. The first end of the pivot 14 is connected to the first side sub-frame 101 and the second side sub-frame 111, respectively, and the second end of the pivot 14 is connected to the third side sub-frame 103 and the fourth side sub-frame 113, respectively.

[0049] Combination Figure 5 The first side sub-frame 101 and the third side sub-frame 103 in the first main body 10 are arranged perpendicularly to the pivot 14, and the first top sub-frame 102 in the first main body 10 is arranged parallel to the pivot 14; the second side sub-frame 111 and the fourth side sub-frame 113 in the second main body 11 are arranged perpendicularly to the pivot 14, and the second top sub-frame 112 in the second main body 11 is arranged parallel to the pivot 14.

[0050] Optionally, the first antenna radiator 12 is disposed on the first side sub-frame 101, and the second antenna radiator 13 is disposed on the first top sub-frame 102; alternatively, the first antenna radiator 12 is disposed on the first side sub-frame 101, and the second antenna radiator 13 is disposed on the second top sub-frame 112; alternatively, the first antenna radiator 12 is disposed on the third side sub-frame 103, and the second antenna radiator 13 is disposed on the first top sub-frame 102; alternatively, the first antenna radiator 12 is disposed on the fourth side sub-frame 113, and the second antenna radiator 13 is disposed on the first top sub-frame 102, and so on.

[0051] In this embodiment, the first antenna radiator 12 and the second antenna radiator 13 can be implemented by attaching an FPC (Flexible Printed Circuit) to an insulating frame, or by making LDS (Laser Direct Structuring) metal branches in the insulating frame, etc. The implementation method of the first antenna radiator 12 and the second antenna radiator 13 is not limited here.

[0052] In this way, regardless of whether the second main body 11 is folded or unfolded relative to the first main body 10, the first antenna radiator 12 and the second antenna radiator 13 are located on different sides of the electronic device 100. Thus, even if one antenna radiator (e.g., the first antenna radiator 12) is blocked in either the folded or unfolded state, the antenna radiators (e.g., the second antenna radiator 13) located on other sides of the electronic device 100 can still meet the usage requirements. This avoids the situation where all antenna radiators are located on the same side of the electronic device. For example, candybar mobile phones often use a design where the WIFI antenna is on the same side. When the user holds the electronic device, it is easy to block the antenna radiators located on the same side, resulting in poor antenna performance of the electronic device. In this embodiment, the antenna performance of the foldable electronic device 100 can be improved whether it is in a folded or unfolded state.

[0053] In one possible implementation, the first antenna radiator 12 and the second antenna radiator 13 are respectively located at the upper and lower corners of a preset diagonal line in the electronic device 100, that is, the positions of the first antenna radiator 12 and the second antenna radiator 13 in the electronic device 100 are diagonally arranged.

[0054] For example, see Figure 6 and Figure 7 , Figure 6 This is an exemplary schematic diagram showing the positions of the first antenna radiator 12 and the second antenna radiator 13 in the electronic device 100 when the electronic device 100 is in an unfolded state. Figure 7 for Figure 6 A schematic diagram showing the positions of the first antenna radiator 12 and the second antenna radiator 13 in the electronic device 100 when the electronic device 100 is in a folded state.

[0055] In this way, the first antenna radiator 12 and the second antenna radiator 13 are designed diagonally. The first antenna radiator 12 is located on the side of the electronic device 100 to meet the signal radiation requirements when the screen is in landscape mode, and the second antenna radiator 13 is located on the top of the electronic device 100 so that it has no effect on the user when holding the side of the electronic device 100.

[0056] Taking the first antenna radiator 12 and the second antenna radiator 13 supporting the WIFI band as an example, the common design of the WIFI antenna on the same side in candybar phones is not very suitable for small foldable phones that can be folded vertically. Obviously, when the phone is folded vertically, the overall length is halved, and the size of the phone is very well matched with the size of a human hand. At this time, if the WIFI antenna is designed on the same side, it is easy for the user to completely block the WIFI antenna when holding the phone with their left or right hand. The performance of the WIFI antenna is extremely poor. Especially now that the usage rate of WIFI network is getting higher and higher, the decline in the performance of WIFI antenna will greatly reduce the user experience.

[0057] In this embodiment of the application, the first antenna radiator 12 and the second antenna radiator 13 supporting the WIFI frequency band are designed diagonally. When the electronic device 100 is in a folded state, even if the user holds the electronic device 100 with their left hand or right hand, that is, if the antenna radiator (such as the first antenna radiator 12) on one side of the electronic device 100 is held by hand, the second antenna radiator 13 on the other side of the electronic device 100 can still meet the WIFI usage requirements.

[0058] For example, please continue to see Figure 6 When the electronic device 100 is folded, the user usually holds the side of the electronic device 100, which blocks the first antenna radiator 12. At this time, the second antenna radiator 13 located at the top of the electronic device 100 performs well. When the electronic device 100 is unfolded, the user holds the electronic device 100 horizontally, which blocks the second antenna radiator 13. At this time, the first antenna radiator 12 located on the side of the electronic device 100 performs well. This takes into account the needs of both horizontal screen and hand-held scenarios. The embodiments of this application can improve the antenna performance of the electronic device 100 in both folded and unfolded states.

[0059] Based on the above embodiments, the forms of the first antenna radiator 12 and the second antenna radiator 13 will be described below.

[0060] For example, based on Figure 6 The illustrated embodiment can be found in [reference]. Figure 8 The first antenna radiator 12 is provided with a first grounding point ( Figure 8 As shown in G1), a first feed point is provided on the first radiating portion 121 between the first grounding point and the first free end of the first antenna radiator 12. Figure 8 As shown in S1), the first feed point is used to connect to the first feed source, and the second feed point is provided on the second radiating part 122 between the first ground point and the second free end of the first antenna radiator 12. Figure 8 As shown in S2), the second feed point is used to connect to the second feed source.

[0061] Please continue reading Figure 8 The distance between the first free end of the first antenna radiator 12 and the rotating shaft 14 is less than the distance between the second free end of the first antenna radiator 12 and the rotating shaft 14, that is, the first free end is the end of the first antenna radiator 12 that is closer to the rotating shaft 14.

[0062] The feed source in this application embodiment includes, but is not limited to, radio frequency transceiver chips and radio frequency front-end circuits. In this way, during the communication process, the electronic device 100 feeds in electrical signals through the feed source, and the radiating part or radiator can transmit and receive radio frequency signals of the corresponding frequency band.

[0063] In this embodiment, the target frequency band includes a first frequency band and a second frequency band, which are different. The target frequency band can be a WIFI frequency band. The first radiating part 121 and the second radiating part 122 can support different frequency bands in the WIFI frequency band. The first radiating part 121 supports the first frequency band, which is, for example, the WIFI 2.4G frequency band, that is, the first radiating part 121 can transmit and receive WIFI 2.4G frequency band radio frequency signals. The second radiating part 122 supports the second frequency band, which is, for example, the WIFI 5G frequency band, that is, the second radiating part 122 can transmit and receive WIFI 5G frequency band radio frequency signals.

[0064] Please continue reading Figure 8 The second antenna radiator 13 includes a first radiator 131 and a second radiator 132, and the first radiator 131 is provided with a third feed point (such as...). Figure 8 As shown in S3) and the second grounding point (such as Figure 8 As shown in G2), the third feed point is used to connect to the third feed source, and the second radiator 132 is provided with a fourth feed point (such as G2). Figure 8 S4 as shown) and the third grounding point (as shown) Figure 8 As shown in G3), the fourth feed point is used to connect to the fourth feed source.

[0065] Regarding the placement of the first antenna radiator 12 and the second antenna radiator 13 in the electronic device 100, please refer to the relevant description in the above embodiments. For example, the first antenna radiator 12 (first radiating part 121 and second radiating part 122) is disposed on the first side sub-frame 101, and the second antenna radiator 13, including the first radiator 131 and the second radiator 132, is disposed on the first top sub-frame 102, or the first radiator 131 and the second radiator 132 are disposed on the second top sub-frame 112, etc., which will not be elaborated here.

[0066] The first radiator 131 and the second radiator 132 can support different frequency bands in the WIFI frequency band. For example, the first radiator 131 supports a first frequency band, such as the WIFI 2.4G frequency band, that is, the first radiator 131 can transmit and receive WIFI 2.4G frequency band radio frequency signals. The second radiator 132 supports a second frequency band, such as the WIFI 5G frequency band, that is, the second radiator 132 can transmit and receive WIFI 5G frequency band radio frequency signals. In other words, both the first radiating part 121 and the first radiator 131 support the first frequency band, and both the second radiating part 122 and the second radiator 132 support the second frequency band.

[0067] In this way, both the first radiating part 121 and the first radiator 131 support the WIFI 2.4G band and are designed diagonally. Both the second radiating part 122 and the second radiator 132 support the WIFI 5G band and are designed diagonally. The first radiating part 122 and the second radiator 132 have good hand grip performance and good landscape performance, thus taking into account the needs of both landscape and hand grip scenarios. Whether the foldable electronic device 100 is in a folded or unfolded state, the WIFI antenna performance of the electronic device 100 can be improved.

[0068] In related technologies, antennas for mid-to-high frequency bands and antennas for the WIFI 2.4G band are usually designed independently, which requires an additional antenna stub for design. In one possible implementation of this application, the first radiating part 121 also supports mid-to-high frequency bands, such as the B3 band, B1 band, and B41 band. That is, the first radiating part 121 is compatible with both mid-to-high frequency bands and the WIFI 2.4G band, realizing the reuse of the first radiating part 121, which is beneficial to the miniaturization design of the electronic device 100.

[0069] In one embodiment, based on Figure 8 The illustrated embodiment can be found in [reference]. Figure 9 In this embodiment, the electronic device 100 further includes a third antenna radiator 15, which supports a third frequency band outside the target frequency band, such as a low-frequency band. A sixth grounding point is provided on the third antenna radiator 15. Figure 9 (not shown) and the fifth feed point ( Figure 9 (Not shown), the fifth feed point is connected to the fifth feed source, so that the third antenna radiator 15 can radiate cellular signals in the low-frequency band.

[0070] Please combine Figure 5 The third antenna radiator 15 can be disposed on the second side sub-frame 111 of the second main body 11, which is perpendicular to the pivot 14.

[0071] In this embodiment, when the second main body 11 is folded relative to the first main body 10, the first projection of the first radiating part 121 in the thickness direction of the electronic device 100 and the second projection of the third antenna radiator 15 in the thickness direction of the electronic device 100 at least partially overlap or do not overlap.

[0072] In the unfolded state, the first radiating part 121 of the electronic device 100 exhibits good performance in commonly used mid-to-high frequency bands such as B3 / B1 / B41, and is also compatible with the WIFI 2.4G frequency band. The third antenna radiator 15 exhibits good performance in the low frequency band. In the folded state, if the first projection of the first radiating part 121 in the thickness direction of the electronic device 100 and the second projection of the third antenna radiator 15 in the thickness direction of the electronic device 100 do not overlap, the performance of the first radiating part 121 and the third antenna radiator 15 will be slightly affected compared to the unfolded state. However, if in the folded state, the first projection of the first radiating part 121 in the thickness direction of the electronic device 100 and the second projection of the third antenna radiator 15 in the thickness direction of the electronic device 100 at least overlap, for example, the third antenna radiator 15 is located below the orthogonal projection of the first radiating part 121, this will lead to a significant decrease in the antenna efficiency of the electronic device 100.

[0073] To improve this issue, please continue to see Figure 9 In this embodiment, the electronic device 100 also includes a parasitic branch, on which a fourth grounding point (such as...) is provided. Figure 9 As shown in G4), the fourth grounding point is connected to the rotating shaft 14, that is, grounded through the rotating shaft 14.

[0074] Please combine Figure 5 A fifth grounding point is provided between the fourth grounding point and the first end of the parasitic branch (e.g. Figure 9 As shown in G5), the first parasitic part 161 between the fifth grounding point and the first end of the parasitic branch is disposed on the first side sub-frame 101. A gap is formed between the first parasitic part 161 and the first free end of the first radiating part 121, and coupling can be performed through the gap.

[0075] A sixth grounding point is provided between the fourth grounding point and the second end of the parasitic branch (e.g. Figure 9 As shown in G6), the second parasitic part 162 between the fourth grounding point and the sixth grounding point is provided on the second side sub-frame 111.

[0076] When the second main body 11 is folded relative to the first main body 10, and the difference between the resonant frequency of the first parasitic part 161 and the center frequency of the frequency band supported by the first radiating part 121 is within a preset range, that is, the resonant frequency of the first parasitic part 161 is near the center frequency of the frequency band supported by the first radiating part 121, and the current direction of the first parasitic part 161 is the same as the current direction of the first radiating part 121, the radiation capability of the first radiating part 121 can be increased, and the antenna efficiency of the first radiating part 121 can be improved.

[0077] The resonant frequency of the second parasitic part 162 is greater than the center frequency. Thus, based on the wave-booster principle, when the second main body 11 is folded relative to the first main body 10, the current direction of the second parasitic part 162 is the same as the current direction of the first radiating part 121. The fact that the current directions of the two are the same can enhance the radiation capability of the first radiating part 121. Therefore, when the second main body 11 is folded relative to the first main body 10, the antenna efficiency of the first radiating part 121 can be improved.

[0078] In addition, the parasitic branch setup meets the ID (Industrial Design) requirement of consistent coupling gaps, increasing the aesthetics of the electronic device 100.

[0079] The following explains how the electronic device 100 controls the resonant frequency of the second parasitic part 162 to be greater than the aforementioned center frequency.

[0080] As mentioned above, the first radiating part 121 supports mid-to-high frequency bands and the WIFI 2.4G frequency band. The mid-to-high frequency bands include the B3 band, B1 band, B41 band, etc. When the first radiating part 121 supports different frequency bands, the corresponding center frequency of the first radiating part 121 is also different. In order to make the resonant frequency of the second parasitic part 162 greater than the center frequency of the frequency band supported by the first radiating part 121 in different scenarios, in this embodiment of the application, the electronic device 100 includes a plurality of tuning circuits. The tuning circuits may include capacitors and / or inductors. The tuning circuits are used to adjust the effective length of the second parasitic part 162 (the resonant frequency of the second parasitic part 162 is related to the effective length of the second parasitic part 162. Generally speaking, if the effective length of the second parasitic part 162 becomes shorter, the resonant frequency of the second parasitic part 162 becomes higher). The effective length is different from the physical length of the second parasitic part 162. The effective length refers to the length of the parasitic branch that the second parasitic part 162 is actually used for radiation.

[0081] The tuning parameters of each tuning circuit are different. The tuning parameters refer to the size of the capacitor, the size of the inductor, and the setting method of the capacitor and the inductor. Because the tuning parameters of different tuning circuits are different, the amount of adjustment of the effective length of the second parasitic part 162 is also different.

[0082] When the second main body 11 is folded relative to the first main body 10, at the same time, one of the target tuning circuits in each tuning circuit is connected to the second parasitic part 162. That is, in actual implementation, the electronic device 100 can select a tuning circuit to be turned on according to the magnitude of the center frequency of the frequency band supported by the first radiating part 121, thereby adjusting the effective length of the second parasitic part 162 through the target tuning circuit to adjust the resonant frequency of the second parasitic part 162 so that the resonant frequency of the second parasitic part 162 is greater than the center frequency.

[0083] As one implementation, the electronic device can preset the correspondence between different frequency bands supported by the first radiating part 121 and each tuning circuit. In this way, during implementation, the electronic device 100 can directly determine the corresponding tuning circuit to be turned on based on the frequency band currently supported by the first radiating part 121 through this correspondence. If the frequency band currently supported by the first radiating part 121 changes, the electronic device 100 also updates the conduction state of each tuning circuit accordingly. That is, following the change in the frequency band currently supported by the first radiating part 121, the electronic device 100 selects the corresponding tuning circuit to be turned on with the second parasitic part 162, so that the resonant frequency of the second parasitic part 162 can be greater than the center frequency of the frequency band currently supported by the first radiating part 121.

[0084] In this embodiment of the application, in order to achieve selective conduction of multiple tuning circuits in the electronic device 100, please refer to... Figure 10 The second main body 11 is also provided with a switch circuit 114, the first terminal of which is connected to the sixth grounding point ( Figure 10 The switch circuit 114 is connected to multiple tuning circuits (G6 as shown), and the multiple second terminals of the switch circuit 114 are respectively connected to multiple tuning circuits (G6). Figure 10 (Not shown) Corresponding connection.

[0085] When the second main body 11 is folded relative to the first main body 10, the switching circuit 114 is used to selectively turn on the conduction state of each of the first tuning circuits. The "selective conduction" mentioned here means that the switching circuit 114 selects a tuning circuit and turns on the tuning circuit and the second parasitic part 162. At this time, the other tuning circuits are in the off state. For the selection process of the tuning circuit, please refer to the above embodiment, which will not be repeated here.

[0086] When the second main body 11 is in an unfolded state relative to the first main body 10, the switch circuit 114 is in an open state.

[0087] Please see Figure 11a and Figure 11b , Figure 11a This is a schematic diagram showing the current directions in the first radiating part 121, the first parasitic part 161, and the second parasitic part 162 of the electronic device 100 when no tuning circuit is used. Figure 11b A schematic diagram showing the current directions in the first radiating part 121, the first parasitic part 161, and the second parasitic part 162 after the electronic device 100 uses a tuning circuit to adjust the resonant frequency of the second parasitic part 162 to be greater than the center frequency of the frequency band supported by the first radiating part 121. Figure 11a and Figure 11b The middle arrow points to the direction of the current.

[0088] from Figure 11a It can be seen that when the second main body 11 is folded relative to the first main body 10, the parasitic branch (second parasitic branch 162) projected by the first radiating branch 121 has a current opposite to that of the first radiating branch 121 and the first parasitic branch 161 itself. This exacerbates the decrease in the radiation efficiency of the first radiating branch 121. When the resonant frequency of the second parasitic branch 162 is adjusted using a tuning circuit, as shown... Figure 11b As shown, at this time, the parasitic branch (second parasitic part 162) under the projection of the first radiating part 121 is in the same direction as the current of the first radiating part 121 and the first parasitic part 161 itself, which enhances the radiation efficiency of the first radiating part 121.

[0089] In this way, when the second main body 11 is folded relative to the first main body 10, at the same time, the switching circuit 114 selects one of the tuning circuits to connect with the second parasitic part 162, thereby adjusting the effective length of the second parasitic part 162 through the target tuning circuit, so as to adjust the resonant frequency of the second parasitic part 162, making the resonant frequency of the second parasitic part 162 greater than the center frequency. In this way, the current direction of the second parasitic part 162 is the same as the current direction of the first radiating part 121. The fact that the current directions of the two are the same can enhance the radiation capability of the first radiating part 121. Thus, when the second main body 11 is folded relative to the first main body 10, the antenna efficiency of the first radiating part 121 can be improved.

[0090] The following diagrams demonstrate the improved antenna efficiency of the first radiating section 121.

[0091] Please see Figure 12a and Figure 12b , Figure 12aThis diagram illustrates the system radiation efficiency of electronic device 100 in its folded and unfolded states, without the use of a tuning circuit. Curve 1 represents the system radiation efficiency of electronic device 100 in its folded state, and curve 2 represents the system radiation efficiency of electronic device 100 in its unfolded state. It can be seen that compared to the performance in the unfolded state, the folded state causes a direct decrease in antenna efficiency of nearly 3 dB.

[0092] Figure 12b The diagram shows a comparison of the system radiation efficiency of the electronic device 100 in the folded state with the B1 band (curve 1), B3 band (curve 2), W24 band (curve 3) and without the tuning circuit (curve 4), after the resonant frequency of the second parasitic part 162 is adjusted by the tuning circuit to be greater than the center frequency of the frequency band supported by the first radiating part 121. It can be seen that the antenna efficiency in the folded state can be improved by up to 1.5dB.

[0093] In this embodiment, while ensuring the performance of the lower antenna LB (third antenna radiator 15), the Wave-Booster technology can improve the performance of MHB and WIFI 2.4G in the folded state, with a maximum gain of 1.5dB. During implementation, targeted improvements can be made according to the application scenario (the specific frequency band supported by the first radiator 121).

[0094] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0095] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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, they should be considered to be within the scope of this specification.

[0096] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. An electronic device, characterized in that, include: A first main body and a second main body, wherein the second main body is capable of being folded or unfolded relative to the first main body; A first antenna radiator is disposed on the first main body or the second main body; A second antenna radiator is disposed on the first main body or the second main body, and both the first antenna radiator and the second antenna radiator support the target frequency band. In the case where the second main body is in a folded or unfolded state relative to the first main body, the first antenna radiator and the second antenna radiator are located on different sides of the electronic device.

2. The electronic device according to claim 1, characterized in that, The first antenna radiator and the second antenna radiator are respectively located at the upper and lower corners of a preset diagonal line in the electronic device.

3. The electronic device according to claim 1 or 2, characterized in that, The first antenna radiator is provided with a first grounding point, the first radiating part between the first grounding point and the first free end of the first antenna radiator is provided with a first feed point, and the second radiating part between the first grounding point and the second free end of the first antenna radiator is provided with a second feed point. The second antenna radiator includes a first radiator and a second radiator. The first radiator is provided with a third feed point and a second ground point, and the second radiator is provided with a fourth feed point and a third ground point. Both the first radiating part and the first radiator support a first frequency band, and both the second radiating part and the second radiator support a second frequency band. The first frequency band and the second frequency band are different, and the target frequency band includes both the first frequency band and the second frequency band.

4. The electronic device according to claim 3, characterized in that, The first frequency band is the 2.4G WIFI band, and the second frequency band is the 5G WIFI band.

5. The electronic device according to claim 3, characterized in that, The electronic device further includes a rotating shaft, the first antenna radiator is disposed on a first side sub-frame of the first main body perpendicular to the rotating shaft, and the distance between the first free end of the first antenna radiator and the rotating shaft is less than the distance between the second free end of the first antenna radiator and the rotating shaft.

6. The electronic device according to claim 5, characterized in that, The electronic device further includes a third antenna radiator that supports a third frequency band outside the target frequency band; The third antenna radiator is disposed on the second side sub-frame of the second main body, which is perpendicular to the rotating shaft; When the second main body is folded relative to the first main body, the first projection of the first radiating part in the thickness direction of the electronic device and the second projection of the third antenna radiator in the thickness direction of the electronic device at least partially overlap or do not overlap.

7. The electronic device according to claim 6, characterized in that, The first radiating element also supports mid-to-high frequency bands, while the third frequency band is a low-frequency band.

8. The electronic device according to claim 6, characterized in that, The electronic device also includes a parasitic branch, which has a fourth grounding point connected to the rotating shaft; A fifth grounding point is provided between the fourth grounding point and the first end of the parasitic branch. A first parasitic part between the fifth grounding point and the first end of the parasitic branch is provided on the first side sub-frame. A gap is formed between the first parasitic part and the first free end of the first radiating part, and coupling can be achieved through the gap. A sixth grounding point is provided between the fourth grounding point and the second end of the parasitic branch, and the second parasitic part between the fourth grounding point and the sixth grounding point is provided on the second side sub-frame. When the second main body is folded relative to the first main body, the first projection and the second projection at least partially overlap, and the difference between the resonant frequency of the first parasitic part and the center frequency of the frequency band supported by the first radiating part is within a preset range, and the resonant frequency of the second parasitic part is greater than the center frequency.

9. The electronic device according to claim 8, characterized in that, When the second main body is folded relative to the first main body, the current direction of the second parasitic part is the same as the current direction of the first radiating part.

10. The electronic device according to claim 8, characterized in that, The electronic device includes multiple tuning circuits, and each tuning circuit has different tuning parameters. When the second main body is folded relative to the first main body, at the same time, one of the target tuning circuits in each tuning circuit is connected to the second parasitic part. The target tuning circuit is used to adjust the effective length of the second parasitic part to adjust the resonant frequency of the second parasitic part, so that the resonant frequency of the second parasitic part is greater than the center frequency.

11. The electronic device according to claim 10, characterized in that, The second main body is also provided with a switching circuit, the first end of which is connected to the sixth grounding point, and the multiple second ends of which are respectively connected to the multiple tuning circuits. When the second main body is folded relative to the first main body, the switching circuit is used to selectively turn on the conduction state of each of the first tuning circuits; When the second main body is in an unfolded state relative to the first main body, the switching circuit is in an open state.

12. The electronic device according to claim 5, characterized in that, The first main body portion further includes a first top sub-frame parallel to the pivot axis, and the second main body portion includes a second top sub-frame parallel to the pivot axis; The first radiator and the second radiator are respectively disposed on the first top sub-frame, or the first radiator and the second radiator are respectively disposed on the second top sub-frame.

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