Electronic device

Abstract

The invention discloses electronic equipment which comprises a first main body, a second main body and a rotating shaft connecting the first main body and the second main body, the first main body and the second main body can rotate around the rotating shaft, and the electronic equipment further comprises a feed source; the first antenna comprises a first radiation branch knot, the first radiation branch knot is arranged on one side, close to the rotating shaft, of the first main body, the first radiation branch knot is parallel to the rotating shaft when the electronic equipment is in a folded state, and the first radiation branch knot comprises a first end and a second end; a feeding point is arranged between the first end and the second end, the second end is provided with a first grounding point, the feeding point is used for being connected with the feed source, the first grounding point is used for being grounded, and the first radiation branch knot is used for supporting transceiving of a first frequency band signal under excitation of the feed source.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of communication technologies, and more specifically, to an electronic device. Background Art

[0002] With the development of electronic technology, electronic devices (such as smart phones, tablet computers, etc.) are becoming more and more popular in people's daily lives and their functions are becoming more and more powerful.

[0003] With the development of miniaturization of electronic devices, foldable electronic devices (such as foldable mobile phones) have become the first choice of many users due to their small size, beautiful appearance and tablet-like experience. However, when foldable electronic devices are in the folded state, the antennas may be blocked or interfere with each other, which will cause the antenna performance to deteriorate and is not conducive to normal communication applications. Summary of the invention

[0004] The embodiment of the present application provides an electronic device. Various aspects involved in the embodiment of the present application are introduced below.

[0005] In a first aspect, an electronic device is provided, comprising: a first body, a second body, and a rotating shaft connecting the first body and the second body, the first body and the second body being rotatable around the rotating shaft, the electronic device further comprising: a feed source; a first antenna, comprising a first radiating branch, the first radiating branch being arranged on a side of the first body close to the rotating shaft, the first radiating branch being parallel to the rotating shaft when the electronic device is in a folded state, the first radiating branch comprising a first end and a second end, a feeding point being arranged between the first end and the second end, a first grounding point being arranged at the second end, the feeding point being used to connect the feed source, the first grounding point being used for grounding, and the first radiating branch being used to support the reception and transmission of a first frequency band signal under the excitation of the feed source.

[0006] The embodiment of the present application provides an electronic device, in which a first antenna is arranged at the position of the hinge, and when a user holds the electronic device in a folded state, the hinge is not easily held by the hand and can be exposed. In addition, the first antenna is not easily affected by other antennas (such as the side antenna of the electronic device), thereby helping to improve the communication experience of the electronic device in the folded state. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of a left-right folding mobile phone that can be applied to the embodiment of the present application.

[0008] Figure 2 It is a schematic diagram of an upper and lower foldable mobile phone that can be applied in the embodiment of the present application.

[0009] Figure 3It is a schematic diagram of a possible structural layout of a foldable mobile phone that can be applied to the embodiment of the present application.

[0010] Figure 4 for Figure 3 A side view of the foldable phone shown in FIG. 1 in a folded state.

[0011] Figure 5 for Figure 3 Schematic diagram of a handheld model of a foldable mobile phone in a folded state shown in FIG.

[0012] Figure 6 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0013] Figure 7 for Figure 6 Schematic diagram of the structure of the first antenna shown in FIG.

[0014] Figure 8 for Figure 7 FIG. 4 is a schematic diagram of a curve of the return loss of the first antenna shown in FIG.

[0015] Fig. 9 This is a schematic diagram of the efficiency of the first antenna provided in an embodiment of the present application.

[0016] Fig.10 A schematic diagram of a possible structure of an electronic device in a folded state provided in an embodiment of the present application.

[0017] Fig.11 for Fig.10 An enlarged view of region A of the electronic device shown in FIG.

[0018] Fig.12 for Fig.11 A schematic structural diagram of an electronic device from another perspective is shown in FIG.

[0019] Fig.13 for Fig.12 Schematic diagram of the structure of the metal middle frame shown in FIG.

[0020] Fig.14 for Fig.13 FIG. 1 is a schematic structural diagram of the metal middle frame from another perspective.

[0021] Fig.15 for Fig.12 FIG. 4 is a schematic diagram of a structure in which the clearance of the first antenna is filled with plastic.

[0022] Fig.16 for Fig.15 FIG. 1 is a schematic diagram of a structure in which the clearance is filled when the first antenna does not include the second radiation branch.

[0023] Fig.17 for Fig.16 The clearance shown in FIG. 5 is a schematic diagram of the total efficiency of the antenna system at different W values.

[0024] Fig.18 A schematic diagram of another possible structure of an electronic device in a folded state provided in an embodiment of the present application.

[0025] Fig.19 for Fig.18 A bottom view of the electronic device shown in FIG.

[0026] Fig. 20 for Fig.14 FIG. 4 is a diagram showing a simulated current diagram of the first radiation branch and the second radiation branch.

[0027] Fig.21 for Fig.14 The antenna radiation pattern of the first antenna is shown in FIG. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0029] With the development of electronic technology, electronic devices (such as smart phones, tablet computers, etc.) are increasingly widely used. With the development of multi-form and portability of electronic devices, foldable electronic devices have become a new product form. Foldable electronic devices can be, for example, foldable mobile phones, foldable tablet computers, foldable handheld computers, foldable smart large screens, and other devices. The following takes a foldable mobile phone as an example to illustrate foldable electronic devices in detail.

[0030] At present, there are two main types of foldable phones. One is a large-screen phone that folds horizontally from left to right. When unfolded, it has a large screen similar to a tablet. When folded, it has a screen that can be carried or used like a regular straight-screen phone. Figure 1 Another type is a small-screen mobile phone that folds vertically. When unfolded, it provides a regular straight-screen mobile phone experience. When folded, it provides a small-sized secondary screen experience to realize infrequently used functions such as time, message, navigation, etc., which can be carried in a small size, such as Figure 2 shown.

[0031] Figure 3 A possible schematic diagram of the structural layout of a foldable mobile phone is shown. Figure 3As shown, the electrical connection between the upper and lower parts of the shaft adopts a flexible printed circuit (FPC) passing through the inside of the shaft, which serves to connect the main board and the small board to transmit radio frequency signals, power signals, control signals and other functions. The antenna design adopts a metal frame design, that is, the metal frame is reused as the radiator of the antenna. Among them, three antennas are given as examples: ANT0, ANT5 and ANT7. In some embodiments, the three antennas can be used to realize communication functions such as 4G / 5G / GPS.

[0032] It is understandable that, unlike the traditional straight-bar mobile phone antenna design, the antenna design of a foldable mobile phone must also consider the performance changes of the antenna in the folded state.

[0033] As an example, Figure 4 As shown, the distance between antennas ANT5 and ANT7 in the folded state is too close. If the two antennas have the same frequency band, the isolation between the two antennas in the same frequency band will deteriorate sharply, resulting in a sharp drop in the performance of the two antennas.

[0034] As another example, Figure 5 As shown in the figure, the antennas on both sides of the phone are basically held tightly by fingers when folded, and the antenna performance drops sharply. In particular, the antenna on the corner of the camera cannot meet the usage requirements due to the grip of the thumb base. Figure 3 and Figure 5 Taking the antenna ANT0 on the corner of the camera as an example, ANT0 is generally the antenna of the GPS frequency band. When holding the phone, the secondary screen navigation application will be greatly affected.

[0035] According to the above description, when a foldable electronic device is in the folded state, the user may block the antenna by holding it, or the antenna on the folded body (for example, Figure 4 The mutual interference between ANT5 and ANT7 in the antenna may lead to the degradation of antenna performance, which is not conducive to normal communication applications.

[0036] In order to solve the above problems, an embodiment of the present application provides an electronic device, in which a first antenna is arranged at the position of the hinge, so that when a user holds the electronic device in a folded state, the hinge is not easily held by the hand and can be exposed. In addition, the first antenna at the hinge is not easily affected by other antennas (such as the side antenna of the electronic device), thereby helping to improve the communication experience of the electronic device in the folded state.

[0037] Combined with the following Figure 6 The electronic device provided in the embodiment of the present application is described in detail. Figure 6As shown, the electronic device 600 includes a first body 610 , a second body 620 , a rotating shaft 630 , a first antenna 640 and a feed source 650 .

[0038] The first body 610 and the second body 620 can rotate around the rotation axis 630, and with the rotation, the form of the foldable electronic device can switch between the folded state and the unfolded state. The number of the rotation axis 630 can be one or more, and this application does not impose specific restrictions on this. The electronic device 600 may include two independent bodies, and the first body 610 and the second body 620 may refer to any one of the bodies of the electronic device 600. Of course, when the first body 610 is one body of the electronic device 600, the second body 620 is another body of the electronic device 600.

[0039] The feed source 650 may include but is not limited to a radio frequency transceiver chip and a radio frequency front-end circuit. The feed source 650 may be disposed on an antenna board or a main board (not shown) of the electronic device 600.

[0040] The first antenna 640 may include a first radiation branch 660. The first radiation branch 660 may be arranged on a side of the first body 610 close to the rotation axis 630, and the first radiation branch 660 may be parallel to the rotation axis 630 when the electronic device 600 is in a folded state. The first radiation branch 660 includes a first end 663 and a second end 664, a feeding point 662 is arranged between the first end 663 and the second end 664, and a first grounding point 661 is arranged at the second end 664. The first grounding point 661 can be used for grounding, and the feeding point 662 can be used for connecting the feed source 650. The first radiation branch 660 can be used to support the transmission and reception of the first frequency band signal under the excitation of the feed source 650.

[0041] In some embodiments, the feed point 662 may be disposed between the first end 663 and the second end 664 at an end close to the first end 663. The first end 663 may be a free end of the first radiation branch 660, and the second end 664 may be a ground end of the first radiation branch.

[0042] In some embodiments, by arranging the first antenna 640 on the side of the first body 610 close to the hinge 630, when the user holds the electronic device 600 in the folded state, the hinge 630 is not easily grasped by the hand, and the first antenna 640 can be exposed. The first antenna 640 is also not easily affected by other antennas (such as Figure 4 The first antenna 640 can be used to replace ANT0 when the user holds the electronic device 600 in the folded state, thereby helping to improve the communication experience of the electronic device 600 in the folded state. As an example, taking the antenna ANT0 on the corner of the camera as an example, ANT0 is generally an antenna of the GPS frequency band. When the user holds the electronic device 600 in the folded state, the first antenna 640 can be used to replace ANT0, thereby improving the stability of the navigation application.

[0043] In some embodiments, the first radiating branch 660 may be an inverted-F antenna.

[0044] It should be understood that Figure 6 This is only a simplified diagram of the electronic device 600. The actual electronic device 600 may also include Figure 6 The electronic device 600 may include more than the components shown. Figure 6 Fewer devices are shown.

[0045] In some embodiments, see Figure 7 , the first antenna 640 further includes a second radiating branch 670, the second radiating branch 670 may include a second grounding point 671, and the second grounding point 671 may be used for grounding. The second radiating branch 670 may further include a third end 673 and a fourth end 674, an electrical coupling gap 675 may be formed between the third end 673 and the first end 663, and the second grounding point 671 may be set at the fourth end 674. Among them, the second radiating branch 670 can support the transmission and reception of the first frequency band signal under the excitation of the feed source 650 through the electrical coupling gap 675. The third end 673 may be a free end of the second radiating branch 670, and the fourth end 674 may be a grounding end of the second radiating branch 670. In some embodiments, the first radiating branch 660 is a main radiator, and the second radiating branch 670 may be a parasitic radiator.

[0046] In some embodiments, the first radiation branch 660 may be used to generate a first resonance mode, and the second radiation branch 670 may be used to generate a second resonance mode. The first resonance mode and the second resonance mode may jointly support the transmission and reception of a first frequency band signal.

[0047] In some embodiments, the first resonance mode corresponds to the first sub-frequency band, the second resonance mode corresponds to the second sub-frequency band, and the first sub-frequency band is lower than the second sub-frequency band. The first sub-frequency band and the second sub-frequency band both belong to the operating frequency band range of the first frequency band signal. In some embodiments, the first sub-frequency band being lower than the second sub-frequency band may mean that all frequencies in the first frequency band are lower than frequencies in the second frequency band (for example, it may be the lowest frequency in the second frequency band), or it may mean that some frequencies in the first frequency band are lower than frequencies in the second frequency band. Of course, the first sub-frequency band being lower than the second sub-frequency band may also mean that the center frequency of the first frequency band is lower than the center frequency of the second frequency band, and the present application does not impose specific restrictions on this.

[0048] In some embodiments, the currents on the first radiation branch 660 and the second radiation branch 670 are currents in the same direction, so that the radiation energy on the first radiation branch 660 and the radiation energy on the second radiation branch 670 can be superimposed in space, thereby helping to improve the antenna performance of the first antenna 640. The direction of the current on the first radiation branch 660 is the direction from the first end 663 to the second end 664, and the direction of the current on the second radiation branch 670 is the direction from the fourth end 674 to the third end 673.

[0049] It should be noted that, in the embodiment of the present application, the first radiation branch 660 and the second radiation branch 670 can be electrically coupled through the electrical coupling gap 675 to achieve the radiation energy transfer between the first radiation branch 660 and the second radiation branch 670. Since the first radiation branch 660 and the second radiation branch 670 are electrically coupled, there is a +90 degree phase difference between the current of the first radiation branch 660 and the second radiation branch 670. Further, in this scheme, the first sub-band is lower than the second sub-band, so that the operating frequency of the first radiation branch 660 is lower than the operating frequency of the second radiation branch 670. In this way, the current of the second radiation branch 670 at the resonance point of the first radiation branch 660 will have a +90 degree phase addition, and further, it can be deduced that: the current direction on the first radiation branch 660 and the current direction on the second radiation branch 670 will have a 180 degree phase difference. At the same time, the free end of the first radiation branch 660 and the free end of the second radiation branch 670 are mouth-to-mouth and have opposite structures. Therefore, the current direction on the first radiation branch 660 and the current direction on the second radiation branch 670 are in the same direction in the horizontal direction. Therefore, the radiation energy on the first radiation branch 660 and the radiation energy on the second radiation branch 670 will be superimposed in space. In other words, the introduction of the second radiation branch 670 further increases the radiation aperture of the first antenna 640 and improves the radiation efficiency of the first antenna 640.

[0050] After adding the second radiating branch 670 to the first antenna 640, the embodiment of the present application further provides an S-parameters graph of the first antenna 640. The S-parameters can be used to describe the transmission and reflection of the signal in the antenna, that is, the return loss.

[0051] Figure 8 is a schematic diagram of an S parameter curve of the first antenna 640. Figure 8It can be seen that the resonant frequency of the first resonant mode (for example, the central resonant frequency of the first resonant mode) is (1.6001, -11.223), and the resonant frequency of the second resonant mode (for example, the central resonant frequency of the second resonant mode) is (1.6791, -14.239). In other words, 1.6001 GHz may refer to the central frequency of the operating frequency of the first radiation branch 660, and 1.6791 GHz may refer to the central frequency of the operating frequency of the second radiation branch 670.

[0052] In order to verify the working efficiency of the first antenna 640 before and after the second radiation branch 670 is added, the embodiment of the present application provides a simulation diagram of the system radiation efficiency and the system total efficiency of the first antenna 640 after the second radiation branch 670 is added, and the system radiation efficiency and the system total efficiency of the first antenna 640 (that is, the first antenna 640 only includes the first radiation branch 660) without adding the second radiation branch 670, as shown in FIG. Fig. 9 As shown, the maximum total system efficiency of the first antenna 640 after adding the second radiation branch 670 is -3.5675dB, and the maximum total system efficiency of the first antenna 640 before adding the second radiation branch 670 is -5.2724dB. It can be seen that the introduction of the second radiation branch 670 improves the working efficiency of the first antenna 640 by about 1.7dB.

[0053] It should be noted that the system radiation efficiency of the first antenna 640 does not include the return loss, and the system total efficiency of the first antenna 640 includes the return loss.

[0054] In order to deepen the understanding of the electronic device 600 and the first antenna 640 in the embodiment of the present application, Figures 10 to 21 A more detailed example is given. Fig.10 A possible overall structural diagram of the electronic device 600 provided in an embodiment of the present application in a folded state. The first body 610 may include a metal middle frame 611, and the material of the metal middle frame 611 may be, for example, an aluminum-magnesium alloy.

[0055] Fig.11 for Fig.10 FIG. 6 is an enlarged view of the A region of the electronic device 600 shown in FIG. Fig.11 The first radiation branch 660 and the second radiation branch 670 may be formed by partially slotting the metal middle frame 611 of the first body 610 near the rotating shaft 630 .

[0056] Fig.12 for Fig.11 FIG. 6 is a schematic diagram of the structure of the electronic device 600 from another perspective. Fig.12, there is a gap between the first radiation branch 660 and the second radiation branch 670. The gap can also be called the clearance 665 of the first antenna 640. It can be understood that due to the existence of the clearance 665 in the first antenna 640, the clearance 665 will cause the strength of the metal middle frame 611 in the first antenna 640 part to be relatively weak. In view of this, in order to increase the structural strength of the metal middle frame 611, in the embodiment of the present application, plastic 666 can be filled in the clearance 665.

[0057] Fig.13 for Fig.12 The rear view of the metal middle frame 611 shown in FIG. Fig.13 The schematic diagram of the structure after the clearance 665 is partially filled with plastic 666 is clearly shown.

[0058] Fig.14 for Fig.13 FIG. 6 is a schematic diagram showing a structure of the metal middle frame 611 from another perspective. Fig.14 As shown, the schematic diagram of the structure after the clearance 665 is partially filled with plastic 666 is more clearly shown.

[0059] Fig.15 for Fig.12 Schematic diagram of the structure after the clearance 665 of the first antenna 640 is filled with plastic 666. It can be seen that the clearance 665 of the first antenna 640 can refer to the horizontal gap width W (i.e., the width of the plastic 666 filled in the clearance 665). It should be understood that the size of the clearance 665 of the first antenna 640 will affect the antenna performance. The larger the clearance 665, the farther the first antenna 640 is from the first body 610, and the better the performance of the first antenna 640. However, it is necessary to consider the structural strength of the first radiation branch 660 and the second radiation branch 670 in the first antenna 640 and the acceptability of the metal middle frame 611. Therefore, the clearance 665 should not be too large.

[0060] Fig.16 for Fig.15 FIG. 6 is a schematic diagram of a structure in which the clearance 665 is filled when the first antenna 640 does not include the second radiation branch 670. Fig.16 , an example is given in detail to illustrate the influence of the clearance 665 size of the first antenna 640 on the performance of the first antenna 640.

[0061] Fig.17 for Fig.16 The clearance 665 shown in FIG. 6 is a schematic diagram of the total efficiency of the antenna system at different W values, see Fig.17, the width W of the transverse slot is different, and the total system efficiency of the first antenna 640 is also different. When W is 1 mm, the maximum total system efficiency of the first antenna 640 is -5.261 dB; when W is 0.7 mm, the maximum total system efficiency of the first antenna 640 is -6.2756 dB; when W is 0.5 mm, the maximum total system efficiency of the first antenna 640 is -7.1777 dB. That is, the larger the width W of the transverse slot is, the higher the total efficiency of the first antenna 640 is, and the better the antenna performance is.

[0062] See again Figure 7 In some embodiments, the electronic device 600 may further include a tuning device 680, the second radiation branch 670 may further include a third grounding point 672, the third grounding point 672 may be arranged between the third end 673 and the fourth end 674, and the third grounding point 672 may be used to connect to and be grounded the tuning device 680. The tuning device 680 may be used to tune the second resonance mode. For example, the tuning device 680 may tune the operating frequency range of the second sub-band signal by adjusting the second resonance mode.

[0063] In some embodiments, the tuning device 680 may refer to an antenna tuning circuit. For example, the tuning device 680 may be a circuit including capacitors and inductors (ie, an LC circuit). The tuning device 680 may be one or more capacitors or inductors.

[0064] As an example, the tuning device 680 may include a first capacitor (not shown in the figure), and the third grounding point 672 may be used to connect to the first capacitor and ground it. The first capacitor may be used to tune the second resonant mode. For example, by setting the first capacitor, the grounding frequency of the second radiation branch 670 may be lowered, that is, the operating frequency range of the second sub-band signal may be reduced by the first capacitor, thereby controlling the increase in the effective length of the second radiation branch 670. In some embodiments, the first capacitor may be a variable capacitor, and the capacitance value of the first capacitor may be set as required, and the present application does not impose any specific restrictions on this.

[0065] As another example, the tuning device 680 may include a first inductor (not shown in the figure), and the third grounding point 672 may be used to connect to the first inductor and be grounded. The first inductor may be used to tune the second resonant mode. For example, by setting the first inductor, the grounding frequency of the second radiation branch 670 may be increased, that is, the operating frequency range of the second sub-band signal may be increased by the first inductor, thereby controlling and reducing the effective length of the second radiation branch 670. In some embodiments, the first inductor may be a variable inductor, and the inductance value of the first inductor may be set according to demand, and the present application does not impose specific restrictions on this.

[0066] See again Fig.11, the electronic device 600 may further include an antenna plate 690, and the tuning device 680 may be disposed on the antenna plate 690. In some embodiments, the antenna plate 690 may include a first connection seat (not shown in the figure), and the first connection seat may be used to connect with the tuning device 680; the electronic device 600 may include a connection spring 691, one end of the connection spring 691 may be connected to the first connection seat, and the other end of the connection spring 691 may be connected to the second radiation branch 670. By providing the first connection seat and the connection spring 691, the connection difficulty between the tuning device 680 and the second radiation branch 670 may be reduced, thereby helping to improve the connection efficiency between the tuning device 680 and the second radiation branch 670.

[0067] In some embodiments, the antenna plate 690 may include a second connection seat (not shown in the figure), and the second connection seat may be connected to the RF signal line on the antenna plate 690; the electronic device 600 may also include a feeding spring 692, one end of which may be connected to the second connection seat, and the other end of which is connected to the first radiation branch 660. It should be understood that the RF signal line on the antenna plate 690 is connected to the feed source 650. By providing the first connection seat and the feeding spring 692, the connection difficulty between the feed source 650 and the first radiation branch 660 can be reduced, thereby helping to improve the connection efficiency between the feed source 650 and the first radiation branch 660.

[0068] In some embodiments, one end of the connecting spring 691 can be welded to the first connecting seat, and one end of the feeding spring 692 can be welded to the second connecting seat.

[0069] The embodiment of the present application does not limit the type of the antenna board 690. For example, the antenna board 690 can be a flexible printed circuit (FPC), a laser direct structuring (LDS) circuit board, a printed direct structuring (PDS) circuit board, and a printed circuit board (PCB).

[0070] In some embodiments, refer to Figure 7, the third grounding point 672 can be set at an end between the third end 673 and the fourth end 674 close to the third end 673. When the third grounding point 672 is closer to the free end of the second radiation branch 670, the tuning device 680 can achieve a greater degree of tuning for the operating frequency of the second radiation branch 670. For example, if the tuner includes a first capacitor, the first capacitor can more effectively pull down the grounding frequency of the second radiation branch 670. That is, when the third grounding point 672 is closer to the free end of the second radiation branch 670, the same first capacitor can pull down more grounding frequency, thereby more effectively increasing the effective length of the second radiation branch 670. Of course, similar to the first capacitor, when the tuner includes a first inductor and the third grounding point 672 is closer to the free end of the second radiation branch 670, the first inductor can more effectively pull up the grounding frequency of the second radiation branch 670, which will not be described in detail here.

[0071] It can be understood that the length of the first radiating branch 660 and the second radiating branch 670 is usually 1 / 8 to 1 / 4 wavelength, but if the first antenna 640 is in a high-order mode operating mode, the length of the first radiating branch 660 and the second radiating branch 670 can be greater than 1 / 4 wavelength, and the present application does not impose any specific restrictions on this.

[0072] It should be noted that the first grounding point 661, the second grounding point 671 and the third grounding point 672 in the implementation of the present application can all be connected to the ground to provide an effective ground reference point for the first antenna 640 to ensure the stability and reliability of the operation of the first antenna 640 and protect the electronic device 600 from lightning strikes and electrostatic interference. In some embodiments, the shaft 630 can be, for example, a hinge, and the first body 610 and the second body 620 in the electronic device 600 are connected by a hinge, so that the electronic device 600 can achieve a folding function.

[0073] In order to deepen the understanding of the electronic device 600 in the embodiment of the present application, Fig.18 A more detailed example is given. Fig.18 This is a schematic diagram of a possible folding state of a foldable electronic device 600 provided in an embodiment of the present application. Fig.18 As shown, the electronic device 600 may include a rotating shaft 630 and a first antenna 640, and the first antenna 640 is located on a side of the first body 610 close to the rotating shaft 630. Of course, the electronic device 600 may also include a circuit main board (referred to as main board), a battery, a camera, a small board, and other antenna units, and other antenna units may include ANT1 to ANT5, for example.

[0074] Fig.19 for Fig.18 FIG. 6 is a bottom view of the electronic device 600 shown in FIG. Fig.19As shown, it can be seen that the rotation shaft 630 occupies a large space, so that the clearance 665 of the first antenna 640 is relatively small. In order to solve the problem of small clearance 665 and poor efficiency of the first antenna 640, the embodiment of the present application improves the antenna performance of the first antenna 640 by adding a second radiation branch 670 to the first antenna 640, thereby helping to reduce the performance degradation caused by the poor clearance 665 of the first antenna 640 at the rotation shaft 630.

[0075] In order to verify the current distribution of the first radiation branch 660 and the second radiation branch 670 in the first antenna 640, the following is combined with Fig. 20 The current direction distribution of the first radiation branch 660 and the second radiation branch 670 is described by way of example.

[0076] Fig. 20 for Fig.14 FIG. 6 is a diagram showing a simulated current diagram of the first radiation branch 660 and the second radiation branch 670. Fig. 20 It can be seen that when the first antenna 640 is working, the current distribution law on the first radiation branch 660 and the second radiation branch 670 is the same as Figure 7 It should be noted that during the current simulation of the first antenna 640, the central operating frequency of the first antenna 640 may be 1.575 GHz, the phase may be 78.75°, and the maximum operating current of the first antenna 640 obtained by simulation may be 488.637 A / m.

[0077] In order to verify the radiation effect of the first antenna 640 after adding the second radiation branch 670, the following is combined with Fig.21 The radiation effect of the first antenna 640 after adding the second radiation branch 670 is described by example.

[0078] Fig.21 for Fig.14 The antenna radiation pattern of the first antenna 640 is shown in FIG. Fig.21 , when the center operating frequency of the first antenna 640 is 1.58 GHz, the system radiation efficiency of the first antenna 640 is -3.471 dB, the total system efficiency of the first antenna 640 is -3.567 dB, and the actual gain of the first antenna 640 is 0.2138 dBi. This means that by adding the second radiation branch 670, good signal reception and transmission capabilities can be provided, and the radiation efficiency of the first antenna 640 is effectively improved.

[0079] In some embodiments, a second antenna (not shown) is disposed on the first body 610 or the second body 620. The second antenna may be an antenna on the side of the electronic device 600 away from the rotating shaft 630. The second antenna may be, for example, Figure 3ANT0 in the figure. The second antenna is used to support the first frequency band; when the electronic device 600 is in a folded state, the first antenna 640 is selected to support the first frequency band; when the electronic device 600 is in an unfolded state, the second antenna is selected to support the first frequency band. As an example, taking the first antenna 640 and the second antenna both being antennas of the GPS frequency band as an example, when the electronic device 600 is in a folded state, the first antenna 640 can be selected to support the GPS frequency band, and when the electronic device 600 is in an unfolded state, the second antenna 640 can be selected to support the GPS frequency band, thereby improving the stability of the navigation application.

[0080] It should be noted that the electronic device 600 mentioned in the embodiment of the present application can be any type of electronic device with wireless communication function. The electronic device 600 can be a portable mobile terminal or a handheld mobile terminal. For example, the electronic device can be a foldable electronic device (such as a foldable mobile phone, a foldable tablet computer, etc.), a smart phone (mobile phone), a tablet computer (Pad), a laptop computer, a PDA, a mobile internet device (mobile internet device, MID), a wearable device, a virtual reality (virtual reality, VR) device, an augmented reality (augmented reality, AR) device, etc., and the present application does not make specific restrictions on this.

[0081] It should be understood that in the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0082] It should be understood that the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0083] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0084] In the several embodiments provided in the present application, it should be understood that the disclosed systems and devices can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0085] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0086] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0087] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0088] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An electronic device, comprising: A first body, a second body, and a rotating shaft connecting the first body and the second body, wherein the first body and the second body can rotate around the rotating shaft, wherein the electronic device further comprises: Feeds; A first antenna includes a first radiating branch, wherein the first radiating branch is arranged on a side of the first body close to the rotating shaft, and the first radiating branch is parallel to the rotating shaft when the electronic device is in a folded state. The first radiating branch includes a first end and a second end, a feeding point is arranged between the first end and the second end, and a first grounding point is arranged at the second end. The feeding point is used to connect the feed source, and the first grounding point is used for grounding. The first radiating branch is used to support the transmission and reception of first frequency band signals under the excitation of the feed source.

2. The electronic device according to claim 1, characterized in that: The first antenna also includes: A second radiation branch node, comprising a third end and a fourth end, wherein an electrical coupling gap is formed between the third end and the first end, and the second radiation branch node comprises a second grounding point, wherein the second grounding point is arranged at the fourth end, and the second grounding point is used for grounding; The second radiation branch supports the transmission and reception of the first frequency band signal under the excitation of the feed source through the electrical coupling gap.

3. The electronic device according to claim 2, characterized in that: The first radiation branch is used to generate a first resonance mode, and the second radiation branch is used to generate a second resonance mode. The first resonance mode and the second resonance mode jointly support the transmission and reception of the first frequency band signal.

4. The electronic device according to claim 3, characterized in that: The electronic device further comprises: Tuning devices; The second radiation branch also includes a third grounding point, which is arranged between the third end and the fourth end. The third grounding point is used to be connected to and grounded by the tuning device, and the tuning device is used to adjust the second resonance mode.

5. The electronic device according to claim 4, characterized in that: The tuning device comprises: A first capacitor, one end of the first capacitor is connected to the tuning end, the other end of the first capacitor is connected to the third grounding point, and the first capacitor is used to increase the equivalent length of the second radiation branch.

6. The electronic device according to claim 4, characterized in that: The tuning device comprises: A first inductor, one end of the first inductor is connected to the tuning end, the other end of the first inductor is connected to the third grounding point, and the first inductor is used to reduce the equivalent length of the second radiation branch.

7. The electronic device according to claim 4, characterized in that: The electronic device further comprises: Antenna board; The tuning device is arranged on the antenna board.

8. The electronic device according to claim 7, characterized in that: The antenna board comprises: A first connecting seat connected to the tuning device; The electronic device further comprises: A connecting spring sheet, one end of which is connected to the first connecting seat, and the other end of which is connected to the second radiation branch.

9. The electronic device according to claim 7, characterized in that: The antenna board comprises: A second connection seat is connected to the radio frequency signal line on the antenna board; The electronic device further comprises: A feeding spring, one end of which is connected to the second connecting seat, and the other end of which is connected to the first radiation branch.

10. The electronic device according to claim 3, characterized in that: The first resonance mode corresponds to a first sub-frequency band, the second resonance mode corresponds to a second sub-frequency band, and the first sub-frequency band is lower than the second sub-frequency band.

11. The electronic device according to claim 2, characterized in that: The currents on the first radiation branch and the second radiation branch are currents in the same direction.

12. The electronic device according to claim 11, characterized in that: The direction of the current on the first radiation branch is from the first end to the second end, and the direction of the current on the second radiation branch is from the fourth end to the third end.

13. The electronic device according to claim 2, characterized in that: The first body includes a metal middle frame, and the first radiation branch nodes and the second radiation branch nodes are formed by slotting a portion of the metal middle frame of the first body close to the rotation axis.

14. The electronic device according to claim 13, characterized in that: There is a gap between the first radiation branch, the second radiation branch and the first body.

15. The electronic device according to claim 1, characterized in that: The first radiation branch is an inverted-F antenna.

16. The electronic device according to any one of claims 1 to 15, characterized in that: A second antenna is disposed on the first body or the second body, and the second antenna is used to support the first frequency band; when the electronic device is in a folded state, the first antenna is selected to support the first frequency band; When the electronic device is in an unfolded state, the second antenna is selected to support the first frequency band.

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