Electronic device

Abstract

The application provides an electronic device, including a frame and a first antenna unit, a first side frame of the frame includes a target finger overlap area. The first antenna unit includes a first antenna radiator and a first feed source arranged on the first side frame, one end of the first antenna radiator forms a first ground end grounded, the other end of the first antenna radiator forms a first free end, the first free end is located between the first ground end and a top frame of the frame, a first feed point electrically connected to the first feed source is arranged between the first free end and the first ground end, the first feed source excites the first antenna radiator to form a first resonance mode supporting a first frequency band, a target radiation section of the first antenna radiator is a strong current distribution section under the first resonance mode, at least part of the target radiation section is arranged in the target finger overlap area, and the target radiation section can form medium loading on the first resonance mode when the target finger overlaps. The electronic device provided by the application can improve the efficiency in a hand-holding scene.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronics, in particular to an electronic device. BACKGROUND

[0002] In the related art, when the electronic device is in a hand-held scenario, the hand absorbs the radiation energy of the antenna unit in the electronic device, resulting in low efficiency of the antenna unit. SUMMARY

[0003] The present application provides an electronic device capable of improving the efficiency of a hand-held scenario.

[0004] Specifically, the present application provides an electronic device, comprising:

[0005] a frame comprising a top frame, a first side frame, a bottom frame and a second side frame connected in sequence, the first side frame comprising a finger overlap area, and the finger overlap area comprising a target finger overlap area; and

[0006] a first antenna unit comprising a first antenna radiator and a first feed source arranged on the first side frame, one end of the first antenna radiator forming a first ground end, the first ground end being grounded, the other end of the first antenna radiator forming a first free end, the first free end being located between the first ground end and the top frame, a first feed point being arranged between the first free end and the first ground end, the first feed source being electrically connected to the first feed point and used for exciting the first antenna radiator to form a first resonant mode supporting a first frequency band, the first antenna radiator comprising a target radiation segment, the target radiation segment being a strong current distribution segment in the first resonant mode, at least part of the target radiation segment being arranged in the target finger overlap area, and the target radiation segment being capable of forming dielectric loading on the first resonant mode when a target finger overlaps.

[0007] The electronic device provided in the application comprises a frame and a first antenna unit. Since the first antenna radiator of the first antenna unit is arranged on the first side frame of the frame, one end of the first antenna radiator forms a first grounding end, the first grounding end is grounded, the other end of the first antenna radiator forms a first free end, the first free end is located between the first grounding end and the top frame, a first feeding point is arranged between the first free end and the first grounding end, a first feed source is electrically connected with the first feeding point, and the first feed source is used to excite the first antenna radiator to form a first resonance mode supporting a first frequency band. The target radiation section of the first antenna radiator, i.e. the strong current distribution section in the first resonance mode, is at least partially arranged in the target finger overlap area of the first side frame, so that the target finger overlap can form medium loading for the first resonance mode. That is, by designing the structure of the first antenna radiator and its position in the first side frame, the target radiation section can improve the efficiency of the first resonance mode when the target finger overlaps, so as to compensate or improve the efficiency of the first resonance mode in the hand holding scene, and improve the communication performance of the electronic device. BRIEF DESCRIPTION OF DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed to be used in the embodiments will be briefly introduced.

[0009] Figure 1 A structural schematic diagram of an electronic device provided in the application is shown in the figure.

[0010] Figure 2 A structural schematic diagram of the electronic device shown in the figure comprises a frame and a first antenna unit. Figure 1 A structural schematic diagram of the electronic device shown in the figure comprises a frame and a first antenna unit.

[0011] Figure 3 A structural schematic diagram of the electronic device shown in the figure comprises a frame and a first antenna unit. Figure 1 A structural schematic diagram of the electronic device shown in the figure comprises a frame and a first antenna unit.

[0012] Figure 4 A structural schematic diagram of the electronic device shown in the figure comprises a frame and a first antenna unit. Figure 1 A structural schematic diagram of the electronic device shown in the figure comprises a frame and a first antenna unit.

[0013] Figure 5 A structural schematic diagram of the electronic device shown in the figure comprises a frame and a first antenna unit. Figure 4 A structural schematic diagram of the electronic device shown in the figure comprises a frame and a first antenna unit.

[0014] Figure 6 A structural schematic diagram of the electronic device shown in the figure comprises a frame and a first antenna unit. Figure 2 A structural schematic diagram of the electronic device shown in the figure comprises a frame and a first antenna unit.

[0015] Figure 7 A structural schematic diagram of the electronic device shown in the figure comprises a frame and a first antenna unit. Figure 6 A structural schematic diagram of the electronic device shown in the figure comprises a frame and a first antenna unit.

[0016] Figure 8 for Figure 7 A schematic diagram showing the first power supply point and / or target location point of the electronic device located in the target finger contact area;

[0017] Figure 9 for Figure 7 A schematic diagram showing the first grounding terminal and / or first power supply point of the electronic device located in the target finger contact area;

[0018] Figure 10 The efficiency curves of the first antenna element are shown in the first holding scenario and the free scenario;

[0019] Figure 11 The efficiency curves of the first antenna unit are shown in the second holding scenario and the free scenario;

[0020] Figure 12 for Figure 7 The schematic diagram of the structure of the first antenna unit of the electronic device shown also includes a first tuning circuit;

[0021] Figure 13 for Figure 2 The electronic device shown also includes a schematic diagram of the structure of a second antenna unit;

[0022] Figure 14 for Figure 12 The electronic device shown also includes a second antenna unit, and the first radiating segment of the second antenna unit forms a second free end at the end away from the second radiating segment, and the second radiating segment forms a third free end at the end away from the first radiating segment.

[0023] Figure 15 for Figure 12 The electronic device shown also includes a second antenna unit, and the end of the first radiating segment of the second antenna unit that is away from the second radiating segment forms a fourth free end, and the end of the second radiating segment that is away from the first radiating segment forms a second grounding end.

[0024] Figure 16 for Figure 12 The electronic device shown also includes a second antenna unit, and the end of the first radiating segment of the second antenna unit that is away from the second radiating segment forms a second ground terminal, and the end of the second radiating segment that is away from the first radiating segment forms a fourth free terminal.

[0025] Figure 17 for Figure 13 The electronic device shown also includes a schematic diagram of the structure of a third antenna unit;

[0026] Figure 18 for Figure 14The electronic device also includes a third antenna unit, and a third radiation section of the third antenna unit forms a fifth free end away from one end of a fourth radiation section, and the fourth radiation section forms a sixth free end away from one end of the third radiation section;

[0027] Figure 19 For Figure 14 The electronic device also includes a third antenna unit, and a third radiation section of the third antenna unit forms a seventh free end away from one end of a fourth radiation section, and the fourth radiation section forms a third ground end away from one end of the third radiation section;

[0028] Figure 20 For Figure 14 The electronic device also includes a third antenna unit, and a third radiation section of the third antenna unit forms a third ground end away from one end of a fourth radiation section, and the fourth radiation section forms a seventh free end away from one end of the third radiation section;

[0029] Figure 21 An efficiency curve diagram of the electronic device provided by the embodiment of the present application in a free scene;

[0030] Figure 22 An efficiency curve diagram of the electronic device provided by the embodiment of the present application in a hand-held scene.

[0031] Legend:

[0032] Electronic device 100; frame 10; first antenna unit 20; first side frame 101; top frame 102; bottom frame 103; second side frame 104; first antenna radiator 201; first feed source 202; first ground end 210; first free end 211; first feed point 212; finger overlap area A1; target finger overlap area A11; target radiation section 213; target position point 214; first tuning circuit 203; second antenna unit 30; second antenna radiator 301; second feed source 302; first radiation section 310; second radiation section 311; second feed point 312; second free end 313; third free end 314; fourth free end 315; second ground end 316; second tuning circuit 303; third antenna unit 40; third antenna radiator 401; third feed source 402; third feed point 412; fifth free end 413; sixth free end 414; third ground end 416; seventh free end 415; third tuning circuit 403. DETAILED DESCRIPTION

[0033] The technical solutions provided by the present application will be described clearly and completely in combination with the drawings. Obviously, the embodiments described in the present application are only part of the embodiments, rather than all the embodiments. Based on the embodiments described in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0034] In the present application, the phrase “embodiment” or “implementation” means that the specific features, structures or characteristics described in combination with the embodiment or implementation can be included in at least one embodiment of the present application. The appearance of this phrase at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments.

[0035] The terms “first”, “second”, and the like in the specification of the present application and claims and the above description of drawings are used to distinguish different objects, and are not used to describe a specific order; the terms “include” and “have” and any variations thereof are intended to cover non-exclusive inclusion. For example: an assembly or device including one or more components is not limited to the listed one or more components, but can optionally include one or more components that are not listed but are inherent to the product exemplified, or one or more components that should be included based on the described function. In addition, the terms “end” and “point” in the specification and claims of the present application and the above description of drawings can indicate a small section of the antenna radiator relative to the whole antenna radiator, i.e. “end” cannot be understood as a terminal end, and “point” cannot be understood as a single point.

[0036] As shown in Figure 1 , a structural schematic diagram of an electronic device 100 is provided in an embodiment of the present application. The electronic device 100 can be a mobile phone, a tablet, or the like, which has a communication function. In the embodiment of the present application, the electronic device 100 takes a mobile phone as an example. As shown in Figure 1 , the electronic device 100 includes a frame 10 and a first antenna unit 20. Of course, the electronic device 100 can also include a circuit board, a display screen, a battery, a camera module, and the like. Figure 2

[0037] ​The frame 10 can be a conductive frame, for example, a metal frame, or an insulating frame, for example, a plastic frame. The frame 10 includes a top frame 102, a first side frame 101, a bottom frame 103, and a second side frame 104 connected in sequence. It can be understood that the top frame 102 is arranged opposite to the bottom frame 103. The first side frame 101 is arranged opposite to the second side frame 104. In the embodiment of the present application, the top frame 102 and the bottom frame 103 are arranged opposite in the length direction of the electronic device 100, and the first side frame 101 and the second side frame 104 are arranged opposite in the width direction of the electronic device 100. The length direction of the electronic device 100 can refer to the Y-axis direction shown in FIG. 1; and the width direction of the electronic device 100 can refer to the X-axis direction shown in FIG. 1. Figure 2 Figure 2

[0038] In the left-hand holding scene and the right-hand holding scene, the end of the first side frame 101 close to the bottom frame 103 and the end of the second side frame 104 close to the bottom frame 103 are easy to be held by the hand. Specifically, the top frame 102 can be understood as a frame relatively far from the hand holding position in the portrait use state of the electronic device 100. The bottom frame 103 can be understood as a frame relatively close to the hand holding position or at least partially held by the palm in the portrait use state of the electronic device 100. The first side frame 101 and the second side frame 104 can be understood as frames partially held by the fingers in the portrait use state of the electronic device 100.

[0039] When viewed from the back of the electronic device 100 (the side away from the display screen), the first side frame 101 can be the right side frame of the electronic device 100, and the second side frame 104 can be the left side frame of the electronic device 100, that is, when viewed from the front of the electronic device 100 (the side facing the display screen), the first side frame 101 can be the left side frame of the electronic device 100, and the second side frame 104 can be the right side frame of the electronic device 100; or, when viewed from the back of the electronic device 100, the first side frame 101 can be the left side frame of the electronic device 100, and the second side frame 104 can be the right side frame of the electronic device 100, that is, when viewed from the front of the electronic device 100, the first side frame 101 can be the right side frame of the electronic device 100, and the second side frame 104 can be the left side frame of the electronic device 100. In the following embodiments, the first side frame 101 is taken as the right side frame of the electronic device 100 when viewed from the back of the electronic device 100, and the first side frame 101 is taken as the left side frame of the electronic device 100 when viewed from the front of the electronic device 100.

[0040] ​​This application does not specify the bending connection method between the top border 102 and the first side frame 101, between the first side frame 101 and the bottom border 103, between the bottom border 103 and the second side frame 104, and between the second side frame 104 and the top border 102. For example, the top border 102 and the first side frame 101, the first side frame 101 and the bottom border 103, the bottom border 103 and the second side frame 104, and the second side frame 104 and the top border 102 can all be connected by right-angle bending; or, the top border 102 and the first side frame 101, the first side frame 101 and the bottom border 103, the bottom border 103 and the second side frame 104, and the second side frame 104 and the top border 102 can all be connected by arc bending, etc. The top border 102, the first side frame 101, the bottom border 103, and the second side frame 104 enclose a receiving space.

[0041] The electronic device 100 has a first gripping scenario and a second gripping scenario. One of the first gripping scenario and the second gripping scenario is a left-hand gripping scenario, and the other is a right-hand gripping scenario. In the following embodiments, the first gripping scenario is a left-hand gripping scenario, and the second gripping scenario is a right-hand gripping scenario, as an example. Please refer to... Figure 3 and Figure 4 , Figure 3 These are schematic diagrams of the back (left) and front (right) of the electronic device 100 according to an embodiment of this application in a first holding scenario; Figure 4 These are schematic diagrams of the back (left) and front (right) of the electronic device 100 according to an embodiment of this application in a second holding scenario. It can be understood that... Figure 3 This is a schematic diagram of the back and front of the electronic device 100 when held in the left hand. Figure 4 This is a schematic diagram of the back and front of the electronic device 100 in a right-hand holding scenario.

[0042] The first side frame 101 includes a finger overlap area. Please refer to... Figure 3 In the first holding scenario, the electronic device 100 of this application embodiment has its first side frame 101 overlapped by the user's left thumb and part of the palm, and its second side frame 104 overlapped by the user's left middle, ring, and little fingers. The finger overlap area of ​​the first side frame 101 in the first holding scenario can be referred to in the attached diagram. Figure 3 As shown in A1, the following description defines the finger overlap area A1. It is understood that in the first grip scenario, the finger overlap area A1 of the first side frame 101 includes the thumb overlap area of ​​the left hand. Please refer to... Figure 4 In the second gripping scenario, the electronic device 100 of this application embodiment has its first side frame 101 overlapped by the middle, ring, and little fingers of the user's right hand, and its second side frame 104 overlapped by the user's right thumb and part of the palm. In the second gripping scenario, the finger overlap area A1 of the first side frame 101 can be referred to in the attached diagram.Figure 4 A1, i.e. the finger overlap area A1 of the first side frame 101 in the second holding scenario includes the middle finger, ring finger and little finger overlap area of the right hand.

[0043] The finger overlap area A1 includes a target finger overlap area, which is described below as a target finger overlap area A11. The target finger overlap area A11 is the thumb overlap area in the first holding scenario and the middle finger overlap area in the second holding scenario. Please refer to Figure 3 In the embodiment of the present application, the target finger overlap area A11 in the first holding scenario is the thumb overlap area of the left hand. It can be understood that in the first holding scenario, the target finger overlap area A11 coincides with the finger overlap area A1. Please refer to Figure 5 In the embodiment of the present application, the target finger overlap area A11 in the second holding scenario is the middle finger overlap area of the right hand.

[0044] Of course, in other embodiments, if the first side frame 101 is the left side frame of the electronic device 100 when viewed from the back of the electronic device 100, and the first side frame 101 is the right side frame of the electronic device 100 when viewed from the front of the electronic device 100, the target finger overlap area A11 in the left holding scenario can be the middle finger overlap area of the left hand, and the target finger overlap area A11 in the right holding scenario can be the thumb overlap area of the right hand.

[0045] It should be noted that due to the difference in palm size of different users, when different users hold the same electronic device 100 with the same gesture, the position of the left thumb of the left hand overlapping the first side frame 101 in the left holding scenario and the position of the right middle finger of the right hand overlapping the first side frame 101 in the right holding scenario will differ. As an example, the target finger overlap area A11 described in the present application can be the corresponding area formed when a user with any size palm holds the electronic device 100 of the present application with the same gesture. For example, the target finger overlap area A11 of the present application can be the area where the first side frame 101 is overlapped by the left thumb in the left holding scenario and the area where the first side frame 101 is overlapped by the right middle finger in the right holding scenario when a user with any size palm holds the electronic device 100 of the present application with the same gesture.

[0046] As Figure 6As shown, the first antenna unit 20 includes a first antenna radiator 201 and a first feed 202 disposed on the first side frame 101. In this application, the first antenna radiator 201 disposed on the first side frame 101 can be understood as the first antenna radiator 201 integrated on the first side frame 101; or it can also be understood as the first antenna radiator 201 disposed on the inner side of the first side frame 101. In other words, the first antenna radiator 201 can be a frame antenna radiator or an internal antenna radiator. For example, the first antenna radiator 201 can be one of a metal frame antenna radiator, a flexible printed circuit (FPC) internal antenna radiator, a laser direct-structuring (LDS) internal antenna radiator, a printing direct structure (PDS) internal antenna radiator, etc. The first feed 202 can be understood as a port of the first antenna unit 20 on the circuit board for electrically connecting the radio frequency chip. The first feed 202 is disposed in the accommodation space formed by the frame 10. For example, the first feed 202 can be disposed on the circuit board of the electronic device 100 and close to the first antenna radiator 201. The first feed 202 is electrically connected to the radio frequency chip and can receive the excitation current provided by the radio frequency chip.

[0047] One end of the first antenna radiator 201 forms a first ground end 210, and the first ground end 210 is grounded. The "ground end" can be understood as the "ground end" being directly or indirectly electrically connected to the reference ground plate of the electronic device 100. The reference ground plate of the electronic device 100 refers to the part of the electronic device 100 that is not affected by any grounding configuration and is considered as a conductive ground. The potential of the reference ground plate is conventionally zero. For example, the reference ground plate can include the ground layer of the main circuit board, the ground layer of the auxiliary circuit board, the metal part of the middle frame, and the conductive part electrically connected to one or more of the ground layer of the main circuit board, the ground layer of the auxiliary circuit board, and the metal part of the middle frame, etc. The reference ground plate is disposed in the accommodation space formed by the frame 10. The other end of the first antenna radiator 201 forms a first free end 211. The "free end" can be understood as an end that is not electrically connected to a conductive part or has a separation gap between the conductive part. The first free end 211 is located between the first ground end 210 and the top frame 102. In other words, the top frame 102, the first free end 211, the first ground end 210, and the bottom frame 103 are arranged in sequence along the length direction of the electronic device 100.

[0048] The first feeding point 212 is arranged between the first free end 211 and the first grounding end 210. Optionally, the first feeding point 212 can be arranged between the first grounding end 210 and the midpoint of the first antenna radiator 201, i.e., the first feeding point 212 can be arranged close to the first grounding end 210; or the first feeding point 212 can be arranged between the first free end 211 and the midpoint of the first antenna radiator 201, i.e., the first feeding point 212 can be arranged close to the first free end 211; or the first feeding point 212 can be arranged at the midpoint of the first antenna radiator 201, i.e., the first feeding point 212 is arranged at the middle position between the first free end 211 and the first grounding end 210. In this application, the first antenna unit 20 can be understood as an inverted F antenna unit.

[0049] The first feed source 202 is electrically connected to the first feeding point 212. The first feed source 202 and the first feeding point 212 can be directly electrically connected or indirectly electrically connected through a metal spring, a feed line or other electrical connecting elements. The first feed source 202 is used to excite the first antenna radiator 201 to form a first resonance mode supporting a first frequency band. It can be understood that the first antenna radiator 201 can receive and transmit signals of the first frequency band when it forms the first resonance mode.

[0050] Please refer to Figure 6 and Figure 7 The first antenna radiator 201 includes a target radiation section 213. The target radiation section 213 is a strong current distribution section in the first resonance mode. The strong current distribution section refers to a section of the first antenna radiator 201 in which the current is relatively strong. In the first antenna radiator 201 of this application, the first grounding end 210 is grounded and the first free end 211 is open, so the current of the first grounding end 210 is relatively strong and the electric field is relatively weak; the current of the first free end 211 is relatively weak and the electric field is relatively strong. It can be understood that the target radiation section 213 is a section of the first antenna radiator 201 that includes the first grounding end 210 but does not include the first free end 211.

[0051] At least part of the target radiation section 213 is arranged at the target finger overlap area A11. In one possible embodiment, all of the target radiation section 213 can be arranged at the target finger overlap area A11. In other words, in the embodiments of the present application, in the first holding scenario, all of the target radiation section 213 can be arranged at the overlap position of the left thumb; in the second holding scenario, all of the target radiation section 213 can be arranged at the overlap position of the right middle finger. In another possible embodiment, part of the target radiation section 213 can be arranged at the target finger overlap area A11. In other words, in the embodiments of the present application, in the first holding scenario, part of the target radiation section 213 can be arranged at the overlap position of the left thumb, another part of the target radiation section 213 can be arranged between the overlap position of the left thumb and the bottom frame 103 and / or another part of the target radiation section 213 can be arranged between the overlap position of the left thumb and the top frame 102; in the second holding scenario, part of the target radiation section 213 can be arranged at the overlap position of the right middle finger, another part of the target radiation section 213 can be arranged between the overlap position of the right middle finger and the bottom frame 103 and / or another part of the target radiation section 213 can be arranged between the overlap position of the right middle finger and the top frame 102.

[0052] The target radiation section 213 can form dielectric loading to the first resonant mode when the target finger overlaps. In the embodiments of the present application, the target finger overlaps refer to the left thumb overlaps in the first holding scenario, or the right middle finger overlaps in the second holding scenario. The target radiation section 213 can form dielectric loading to the first resonant mode when the target finger overlaps refers to that, in the first holding scenario, when the left thumb overlaps at least part of the target radiation section 213, the efficiency of the target radiation section 213 to the first resonant mode is improved, and / or, in the second holding scenario, when the right middle finger overlaps at least part of the target radiation section 213, the efficiency of the target radiation section 213 to the first resonant mode is improved.

[0053] The electronic device 100 provided in the application comprises a frame 10 and a first antenna unit 20. Since the first antenna radiator 201 of the first antenna unit 20 is arranged on the first side frame 101 of the frame 10, one end of the first antenna radiator 201 forms a first grounding end 210, the first grounding end 210 is grounded, the other end of the first antenna radiator 201 forms a first free end 211, the first free end 211 is located between the first grounding end 210 and the top frame 102, a first feeding point 212 is arranged between the first free end 211 and the first grounding end 210, a first feed source 202 is electrically connected to the first feeding point 212, and the first feed source 202 is used to excite the first antenna radiator 201 to form a first resonant mode supporting a first frequency band. The target radiation section 213 of the first antenna radiator 201, that is, the strong current distribution section in the first resonant mode, is at least partially arranged in the target finger overlap area A11 of the first side frame 101, so that the target radiation section 213 can form dielectric loading on the first resonant mode when the target finger overlaps. That is, by designing the structure of the first antenna radiator 201 and its position on the first side frame 101, the influence of the target radiation section 213 on the first resonant mode when the target finger overlaps is no longer manifested as absorbing radiation energy but as increasing radiation energy, so as to improve the efficiency of the first resonant mode in the left-hand holding scene and the right-hand holding scene, and improve the communication performance of the electronic device 100 in the holding scene.

[0054] In addition, by arranging the first free end 211 between the first grounding end 210 and the top frame 102, the first grounding end 210 is closer to the bottom frame 103 relative to the first free end 211, and the first free end 211 is closer to the top frame 102 relative to the first grounding end 210, so as to facilitate the first grounding end 210 to be overlapped by the target finger when the electronic device 100 is used in a vertical screen mode, so as to realize the dielectric loading of the target radiation section 213 on the first resonant mode when the target finger overlaps, and the first free end 211 will not be overlapped by the finger or the palm, so as to ensure the radiation performance of the first antenna radiator 201 and avoid the "death grip".

[0055] In one possible embodiment, the first frequency band is any frequency band in the low-frequency band. The low-frequency band is a band less than 1 GHz. For example, the first frequency band can be one of the B5 band (0.82 GHz to 0.89 GHz), the B8 band (0.88 GHz to 0.96 GHz), the B20 band (0.79 GHz to 0.86 GHz), or the B28 band (0.7 GHz to 0.8 GHz). The first resonant mode includes a 1 / 4 wavelength mode formed from the first ground terminal 210 to the first free terminal 211. Here, "wavelength" in the 1 / 4 wavelength mode refers to the wavelength corresponding to the first frequency band supported by the first resonant mode. The first feed point 212 is located between the midpoint of the first antenna radiator 201 and the first ground terminal 210. It is understood that the first feed point 212 is relatively close to the first ground terminal 210 and far from the first free terminal 211. By positioning the first feed point 212 between the midpoint of the first antenna radiator 201 and the first ground terminal 210, it is beneficial to form a 1 / 4 wavelength mode supporting the low-frequency band from the first ground terminal 210 to the first free end 211.

[0056] Among them, such as Figure 7 As shown, the target radiating segment 213 includes a first antenna radiator 201 extending from a first grounding terminal 210 to a target location point 214. It should be noted that the target radiating segment 213 includes the first grounding terminal 210, a radiator segment between the first grounding terminal 210 and the target location point 214, and the target location point 214. The target location point 214 is located between the first free end 211 and the first feed point 212. The target location point 214 may be relatively close to the first free end 211; or, the target location point 214 may be relatively close to the first feed point 212. In one possible implementation, the distance between the target location point 214 and the first free end 211 may occupy 1 / 5 of the total length of the first antenna radiator 201. At least one of the first grounding terminal 210, the first feed point 212, and the target location point 214 is located in the target finger contact area A11, and the first free end 211 is located outside the finger contact area A1.

[0057] It can be understood that in the first holding scenario, the left thumb can be overlapped with one of the first ground end 210, the first feeding point 212 and the target position point 214; or in the first holding scenario, the left thumb can be overlapped with the first ground end 210 to the first feeding point 212; or in the first holding scenario, the left thumb can be overlapped with the first feeding point 212 to the target position point 214; or in the first holding scenario, the left thumb can be overlapped with the first ground end 210 to the target position point 214. In the second holding scenario, the right middle finger can be overlapped with one of the first ground end 210, the first feeding point 212 and the target position point 214; or in the second holding scenario, the right middle finger can be overlapped with the first ground end 210 to the first feeding point 212; or in the first holding scenario, the right middle finger can be overlapped with the first feeding point 212 to the target position point 214; or in the second holding scenario, the right middle finger can be overlapped with the first ground end 210 to the target position point 214.

[0058] In a possible implementation, as shown in FIG. 2, the first feeding point 212 and / or the target position point 214 are arranged in the target finger overlapping area A11, the first ground end 210 is arranged between the target finger overlapping area A11 and the bottom frame 103, and the first free end 211 is arranged between the target finger overlapping area A11 and the top frame 102. In this embodiment, the part of the target radiation segment 213 close to the first free end 211 is arranged in the target finger overlapping area A11. Figure 8 In another possible implementation, as shown in FIG. 3, the first ground end 210 and / or the first feeding point 212 are arranged in the target finger overlapping area A11, and the target position point 214 is arranged outside the target finger overlapping area A1. In this embodiment, the target position point 214 and the first free end 211 are both arranged between the target finger overlapping area A11 and the top frame 102. In this embodiment, the part of the target radiation segment 213 close to the first ground end 210 is arranged in the target finger overlapping area A11.

[0059] Figure 9

[0060] Since the current of the first ground end 210 of the first antenna radiator 201 is strong, and the electric field of the first free end 211 is strong, the part of the target radiation segment 213 close to the first ground end 210 is arranged in the target finger overlapping area A11, which is better than the part of the target radiation segment 213 close to the first free end 211 arranged in the target finger overlapping area A11, and can make the target radiation segment 213 form better medium loading effect on the first resonant mode when the target finger is overlapped, that is, the efficiency compensation or improvement on the first resonant mode in the first holding scenario and the second holding scenario is more obvious.

[0061] ​​Specifically, the efficiency of the first resonant mode formed by the target radiation segment 213 after dielectric loading is greater than the efficiency of the first resonant mode in a free scene. The following data results take the B28 frequency band as an example.

[0062] like Figure 10 As shown, Figure 10 The efficiency curves of the first antenna element 20 are shown in the first holding scenario and the free scenario. Figure 10 Curve 1 represents the efficiency curve of the first antenna element 20 when only the left thumb touches the portion of the target radiation segment 213 near the first grounding terminal 210. Figure 9 The implementation method shown. Figure 10 Curve 2 is the efficiency curve of the first antenna element 20 when only the left thumb touches the part of the target radiation segment 213 near the first free end 211. Figure 8 The implementation method shown. Figure 10 Curve 3 in the middle is the efficiency curve of the first antenna element 20 in a free scene. Figure 10 Curve 4 in the middle is the efficiency curve of the first antenna unit 20 in the first holding scenario. Figure 10 Curve 5 in the middle is the efficiency curve of the first antenna element 20 in the first holding scenario, but when the left thumb is separated from the palm.

[0063] contrast Figure 10 As can be seen from the efficiency of curves 1 and 3 in the first frequency band (taking 0.75GHz as an example), the efficiency of the first resonant mode is greater when only the left thumb touches the part of the target radiation segment 213 near the first grounding end 210 than the efficiency of the first resonant mode in the free scene. Therefore, it can be concluded that when only the left thumb touches the part of the target radiation segment 213 near the first grounding end 210, the target radiation segment 213 forms a dielectric loading on the first resonant mode, that is, when only the left thumb touches the part of the target radiation segment 213 near the first grounding end 210, the target radiation segment 213 improves the efficiency of the first resonant mode.

[0064] contrast Figure 10 As can be seen from the efficiency of curves 2 and 3 in the first frequency band, the efficiency of the first antenna element 20 is greater than that of the first resonant mode in the free scene when only the left thumb touches the part of the target radiation segment 213 near the first free end 211. Therefore, it can be concluded that when the left thumb touches the part of the target radiation segment 213 near the first free end 211, the target radiation segment 213 forms a dielectric loading on the first resonant mode, that is, when the left thumb touches the part of the target radiation segment 213 near the first free end 211, the target radiation segment 213 improves the efficiency of the first resonant mode.

[0065] contrast Figure 10The efficiency of the middle curve 1 and the curve 2 in the first frequency band can show that the efficiency of the first resonant mode when only the part of the target radiation segment 213 close to the first ground end 210 is arranged in the left-hand thumb overlapping area is higher than the efficiency of the first resonant mode when only the part of the target radiation segment 213 close to the first free end 211 is arranged in the left-hand thumb overlapping area. In other words, the more the part of the target radiation segment 213 close to the first ground end 210 is arranged in the target finger overlapping area A11, the more the efficiency of the first resonant mode is improved.

[0066] Comparison Figure 10 The efficiency of the middle curve 3 and the curve 4 in the first frequency band can show that the efficiency of the first resonant mode in the first holding scene is lower than the efficiency of the first resonant mode in the free scene, so it can be concluded that in addition to the left-hand thumb overlapping, the overlapping of the remaining fingers and the palm of the hand as a whole absorbs the radiation energy of the first resonant mode, so it can be concluded that only when at least part of the target radiation segment 213 is arranged in the overlapping area of the left-hand thumb, the communication performance of the electronic device 100 in the first holding scene can be improved.

[0067] Comparison Figure 10 The efficiency of the middle curve 4 and the curve 5 at 0.75 GHz can show that whether the left-hand thumb is separated from the palm has little effect on the efficiency of the first resonant mode.

[0068] Obviously, based on the above Figure 10 The comparison and analysis of each curve can show that when at least part of the target radiation segment 213 is arranged in the overlapping area of the left-hand thumb in the first holding scene, the efficiency of the first resonant mode in the first holding scene of the electronic device 100 can be improved.

[0069] As Figure 11 shown, Figure 11 is the efficiency curve of the first antenna unit 20 in the second holding scene and the free scene. Figure 11 The middle curve 6 is the efficiency curve of the first antenna unit 20 when only the right-hand middle finger overlaps the target radiation segment 213. Figure 11 The middle curve 7 is the efficiency curve of the first antenna unit 20 in the free scene. Figure 11 The middle curve 8 is the efficiency curve of the first antenna unit 20 in the second holding scene. Figure 11 The middle curve 9 is the efficiency curve of the first antenna unit 20 in the second holding scene and with the right-hand middle finger removed.

[0070] Comparison Figure 11As can be seen from the efficiency of the curve 6 and the curve 7 in the first frequency band, the efficiency of the first resonant mode when only the right middle finger is overlapped on the target radiation section 213 is greater than the efficiency of the first resonant mode in the free field scenario, that is, the target radiation section 213 forms a dielectric loading to the first resonant mode when only the right middle finger is overlapped on the target radiation section 213, and thus the target radiation section 213 can improve the efficiency of the first resonant mode when the right middle finger is overlapped on the target radiation section 213. Figure 11 As can be seen from the efficiency of the curve 7 and the curve 8 in the first frequency band, the efficiency of the first resonant mode in the second holding scenario is basically the same as the efficiency of the first resonant mode in the free field scenario, and thus it can be concluded that, in addition to the right middle finger overlapping, the overlapping of the remaining fingers and the palm to the first resonant mode basically exhibits the same absorption effect as the dielectric loading of the right middle finger to the first resonant mode. Comparison Figure 11 As can be seen from the efficiency of the curve 7 and the curve 9 in the first frequency band, when the right middle finger is not overlapped on the target radiation section 213 and the remaining fingers and the palm are in the second holding scenario, the efficiency of the first resonant mode is lower than the efficiency of the first resonant mode in the free field scenario, and thus it can be concluded that the right middle finger and the palm of the right hand absorb the radiation energy of the first resonant mode. Obviously, based on the above comparative analysis, it can be concluded that when at least part of the target radiation section 213 is arranged in the overlapping area of the right middle finger in the second holding scenario, the efficiency of the first resonant mode in the second holding scenario of the electronic device 100 can be improved.

[0071] Further, the first feed source is further configured to excite the first antenna radiator 201 to form a second resonant mode supporting a second frequency band. It can be understood that the first antenna radiator 201 can transmit and receive signals of the second frequency band when the first antenna radiator 201 forms the second resonant mode. The second frequency band is different from the first frequency band. In a possible embodiment, the second frequency band can be any frequency band in the medium-high frequency band (greater than or equal to 1 GHz and less than or equal to 3 GHz). The medium-high frequency band refers to a frequency band greater than or equal to 1 GHz and less than or equal to 3 GHz. The second resonant mode can include a 1 / 4 wavelength mode formed from the first feed point 212 to the first free end 211. Wherein, in the 1 / 4 wavelength mode, the "wavelength" refers to the wavelength corresponding to the second frequency band supported by the second resonant mode.

[0072] The target radiation section 213 can also form a dielectric loading to the second resonant mode when the target finger is overlapped. It can be understood that the efficiency of the target radiation section 213 to the second resonant mode is improved when the left thumb of the first holding scenario is overlapped on at least part of the target radiation section 213, and / or the efficiency of the target radiation section 213 to the second resonant mode is improved when the right middle finger of the second holding scenario is overlapped on at least part of the target radiation section 213.

[0073] In other words, the target radiation section 213 of at least part of the first antenna radiator 201 is arranged at the target finger overlap area A11 of the first side frame 101, so that the target radiation section 213 can form dielectric loading to the second resonant mode in the first holding scenario and the second holding scenario, that is, by designing the structure of the first antenna radiator 201 and its position in the first side frame 101, so that the overlap of the target finger no longer affects the second resonant mode as absorbing radiation energy, but as increasing radiation energy, thereby improving the efficiency of the second resonant mode in the first holding scenario and the second holding scenario, and improving the communication performance of the electronic device 100 in the first holding scenario and the second holding scenario.

[0074] Wherein, the efficiency of the second resonant mode after the target radiation section 213 forms dielectric loading to the second resonant mode is greater than the efficiency of the second resonant mode in the free scenario. The following data results take the second frequency band as an example.

[0075] Please continue to refer to Figure 10 Comparing Figure 10 It can be seen from the efficiency of the curve 1 and the curve 3 greater than 1GHz that the efficiency of the second resonant mode when only the left thumb overlaps the part of the target radiation section 213 close to the first ground end 210 is greater than the efficiency of the second resonant mode in the free scenario, so it can be obtained that the target radiation section 213 forms dielectric loading to the second resonant mode when only the left thumb overlaps the part of the target radiation section 213 close to the first ground end 210, that is, the target radiation section 213 improves the efficiency of the second resonant mode when only the left thumb overlaps the part of the target radiation section 213 close to the first ground end 210.

[0076] Comparing Figure 10 It can be seen from the efficiency of the curve 2 and the curve 3 greater than 1GHz that the efficiency of the second resonant mode when only the left thumb overlaps the part of the target radiation section 213 close to the first free end 211 is greater than the efficiency of the second resonant mode in the free scenario, so it can be obtained that the target radiation section 213 forms dielectric loading to the second resonant mode when only the left thumb overlaps the part of the target radiation section 213 close to the first free end 211, that is, the target radiation section 213 improves the efficiency of the second resonant mode when only the left thumb overlaps the part of the target radiation section 213 close to the first free end 211.

[0077] Comparing Figure 10As can be seen from the efficiency of the middle curve 1 and the curve 2 at greater than 1 GHz, the efficiency of the second resonant mode when only the portion of the target radiation section 213 near the first ground end 210 is arranged in the left-hand thumb overlap region is higher than the efficiency of the second resonant mode when only the portion of the target radiation section 213 near the first free end 211 is arranged in the left-hand thumb overlap region. In other words, the more of the target radiation section 213 near the first ground end 210 is arranged in the target finger overlap region Al l, the more the efficiency of the second resonant mode is improved.

[0078] By comparison Figure 10 As can be seen from the efficiency of the middle curve 3 and the curve 4 at greater than 1 GHz, the efficiency of the second resonant mode in the first holding scenario is higher than the efficiency of the second resonant mode in the free scenario, from which it can be deduced that the dielectric loading of the left hand on the second resonant mode in the first holding scenario exceeds the radiation energy absorption of the left hand on the second resonant mode. It can be understood that the efficiency of the second resonant mode in the first holding scenario is greater than the efficiency of the second resonant mode in the free scenario. However, by comparison Figure 10 As can be seen from the middle curve 1 and the curve 4, the efficiency of the second resonant mode in the first holding scenario is lower than the efficiency of the second resonant mode when only the left-hand thumb is overlapped on the portion of the target radiation section 213 near the first ground end 210, so it can be concluded that the overlap of the left-hand thumb is the main reason for improving the efficiency of the second resonant mode, and therefore when at least part of the target radiation section 213 is arranged in the overlap region of the left-hand thumb, the communication performance of the electronic device 100 in the first holding scenario can be significantly improved.

[0079] In addition, by comparison Figure 11 As can be seen from the efficiency of the middle curve 6 and the curve 7 at greater than 1 GHz, the efficiency of the second resonant mode when only the right-hand middle finger is overlapped on the target radiation section 213 is greater than the efficiency of the second resonant mode in the free scenario, i.e. the target radiation section 213 forms a dielectric loading on the second resonant mode when only the right-hand middle finger is overlapped on the target radiation section 213. In other words, the target radiation section 213 improves the efficiency of the second resonant mode when the right-hand middle finger is overlapped on the target radiation section 213.

[0080] By comparison Figure 11 As can be seen from the efficiency of the middle curve 7 and the curve 8 at greater than 1 GHz, the efficiency of the second resonant mode in the second holding scenario is higher than the efficiency of the second resonant mode in the free scenario, from which it can be deduced that the dielectric loading of the right hand on the second resonant mode in the second holding scenario exceeds the radiation energy absorption of the right hand on the second resonant mode. It can be understood that the efficiency of the second resonant mode in the second holding scenario is greater than the efficiency of the second resonant mode in the free scenario. However, by comparison Figure 11As can be seen from the curves 6 and 8, the efficiency of the second resonance mode in the second holding scenario is lower than that when only the right middle finger is overlapped on the part of the target radiation section 213 close to the first ground end 210, so it can be concluded that the overlapping of the right middle finger is the main reason for improving the efficiency of the second resonance mode, and thus the communication performance of the electronic device 100 in the second holding scenario can be improved when at least part of the target radiation section 213 is arranged in the overlapping area of the right middle finger.

[0081] Comparison Figure 11 As can be seen from the curves 7 and 9, when the right middle finger is not overlapped on the target radiation section 213 and the rest of the fingers and the palm are in the second holding scenario, the efficiency of the second resonance mode is lower than that in the free scenario, so it can be concluded that the fingers and the palm of the right hand except the middle finger absorb the radiation energy of the second resonance mode. Obviously, based on the above comparison and analysis, it can be concluded that the efficiency of the second resonance mode in the second holding scenario of the electronic device 100 can be improved when at least part of the target radiation section 213 is arranged in the overlapping area of the right middle finger in the second holding scenario.

[0082] In a possible embodiment, the distance between the first free end 211 and the top frame 102 is greater than or equal to 1 / 4 of the length of the first side frame 101 and less than or equal to 5 / 12 of the length of the first side frame 101. Optionally, the length of the first side frame 101 can be 140 mm to 180 mm. For example, the length of the first side frame 101 can be 140 mm, 150 mm, 160 mm, 165 mm, 172 mm, 180 mm, etc. In a possible implementation, the length of the first side frame 101 can be 150 mm, and the distance between the first free end 211 and the top frame 102 can be greater than or equal to 37.5 mm and less than or equal to 62.5 mm.

[0083] By setting the distance between the first free end 211 and the top frame 102 to be greater than or equal to 1 / 4 of the length of the first side frame 101 and less than or equal to 5 / 12 of the length of the first side frame 101, the at least part of the target radiation section 213 can be arranged in the target finger overlapping area A11 in the first holding scenario and the second holding scenario when the size of the first side frame 101 meets the length design requirement of the mobile phone.

[0084] As shown in FIG. 1, the first antenna unit 20 can further include a first tuning circuit 203. The first tuning circuit 203 can be electrically connected between the first feeding point 212 and the first feed source 202. The first tuning circuit 203 is used to tune the first frequency band. By setting the first tuning circuit 203, the first frequency band can be switched in the low frequency band such as the B5 frequency band, the B8 frequency band, the B28 frequency band, etc. Figure 12 As shown in FIG. 1, the first antenna unit 20 can further include a first tuning circuit 203. The first tuning circuit 203 can be electrically connected between the first feeding point 212 and the first feed source 202. The first tuning circuit 203 is used to tune the first frequency band. By setting the first tuning circuit 203, the first frequency band can be switched in the low frequency band such as the B5 frequency band, the B8 frequency band, the B28 frequency band, etc.

[0085] Further, please refer to Figure 13 and Figure 14 , the electronic device 100 further comprises a second antenna unit 30. The second antenna unit 30 comprises a second antenna radiator 301 and a second feed 302. The second antenna radiator 301 comprises a first radiation segment 310 and a second radiation segment 311 connected. The first radiation segment 310 is arranged on the first side frame 101, and the second radiation segment 311 is arranged on the bottom frame 103. It can be understood that the second antenna radiator 301 is arranged at the corner formed by the first side frame 101 and the bottom frame 103. In this application, the first radiation segment 310 arranged on the first side frame 101 can be understood as the first radiation segment 310 integrated on the first side frame 101; or it can also be understood that the first radiation segment 310 is arranged on the inner side of the first side frame 101; the second radiation segment 311 arranged on the bottom frame 103 can be understood as the second radiation segment 311 integrated on the bottom frame 103; or it can also be understood that the second radiation segment 311 is arranged on the inner side of the bottom frame 103. In other words, the second antenna radiator 301 can be a frame antenna radiator or an internal antenna radiator. For example: the second antenna radiator 301 can be one of a metal frame antenna radiator, an FPC internal antenna radiator, an LDS internal antenna radiator, a PDS internal antenna radiator, etc. The second feed 302 can be understood as a port on the circuit board for electrically connecting the radio frequency chip of the second antenna unit 30. The second feed 302 is arranged in the accommodation space formed by the frame 10. For example: the second feed 302 can be arranged on the circuit board of the electronic device 100 and close to the second antenna radiator 301. The second feed 302 is electrically connected to the radio frequency chip and can receive the excitation current provided by the radio frequency chip. The first radiation segment 310 or the second radiation segment 311 is provided with a second feed point 312. In a possible implementation, the second feed point 312 can be arranged on the first radiation segment 310.

[0086] The second feed 302 is electrically connected to the second feed point 312. The second feed point 312 and the second feed 302 can be directly electrically connected or indirectly electrically connected through a metal spring or the like. The second feed 302 is used to excite the second antenna radiator 301 to form a third resonant mode supporting a third frequency band. It can be understood that the second antenna radiator 301 can transmit and receive signals of the third frequency band when it forms the third resonant mode. The third frequency band can be the same as the first frequency band.

[0087] In this embodiment, the electronic device 100 further comprises a second antenna unit 30. When the third frequency band is the same as the first frequency band, the communication performance of the electronic device 100 can be improved, and the signal coverage area of the electronic device 100 can be expanded. When the third frequency band is different from the first frequency band, the application frequency band of the electronic device 100 can be expanded.

[0088] Optionally, please refer to Figure 14 to Figure 16 , the first radiating segment 310 forms a second free end 313 at an end away from the second radiating segment 311, and the second radiating segment 311 forms a third free end 314 at an end away from the first radiating segment 310; or, one of the first radiating segment 310 at an end away from the second radiating segment 311 and the second radiating segment 311 at an end away from the first radiating segment 310 forms a fourth free end 315, and the other of the first radiating segment 310 at an end away from the second radiating segment 311 and the second radiating segment 311 at an end away from the first radiating segment 310 forms a second ground end 316, and the second ground end 316 is grounded.

[0089] In a possible implementation, as shown in Figure 14 , the first radiating segment 310 forms a second free end 313 at an end away from the second radiating segment 311, and the second radiating segment 311 forms a third free end 314 at an end away from the first radiating segment 310. The second antenna unit 30 in this embodiment can be understood as a T-shaped antenna unit.

[0090] In a possible implementation, as shown in Figure 15 , the first radiating segment 310 forms a fourth free end 315 at an end away from the second radiating segment 311, and the second radiating segment 311 forms a second ground end 316 at an end away from the first radiating segment 310, and the second ground end 316 is grounded. The second antenna unit 30 in this embodiment can be understood as an inverted F-shaped antenna unit.

[0091] , please refer to Figure 14 and Figure 15 , in the first holding scenario, the center frequency point of the third frequency band is less than the center frequency point of the first frequency band. In the second holding scenario, the center frequency point of the third frequency band is less than the center frequency point of the first frequency band. It can be understood that the third resonant mode of the second antenna radiator 301 supporting the third frequency band is low-biased in the first holding scenario and the second holding scenario. By making the center frequency point of the third frequency band less than the center frequency point of the first frequency band in the first holding scenario, and the center frequency point of the third frequency band less than the center frequency point of the first frequency band in the second holding scenario, it is beneficial to form an H-E resonant mode of the first antenna radiator 201 on the second antenna radiator 301 when the first resonant mode and the third resonant mode support the same frequency band. The first antenna radiator 201 forms an H-E resonant mode on the second antenna radiator 301, that is, the first resonant mode generates a same-direction resonant current on the second antenna radiator 301 in the first holding scenario; the first resonant mode generates a same-direction resonant current on the second antenna radiator 301 in the second holding scenario. Figure 14 and Figure 15The dashed line shows that the first antenna radiator 201 forms a first resonant mode of resonant current and the first resonant mode generates a same-direction resonant current in the second antenna radiator 301 in the first holding scenario. The same-direction resonant current in the second antenna radiator 301 generated by the first resonant mode means that the flow direction of the resonant current generated by the first resonant mode in the second antenna radiator 301 is the same as the flow direction of the resonant current generated by the first resonant mode in the first antenna radiator 201.

[0092] In a possible implementation, as shown in Figure 16 The first radiating section 310 forms a second ground end 316 away from one end of the second radiating section 311, the second ground end 316 is grounded, and the second radiating section 311 forms a fourth free end 315 away from one end of the first radiating section 310. In this embodiment, the second antenna unit 30 can be understood as an inverted F antenna unit.

[0093] The second antenna unit 30 can further include a second tuning circuit 303, as shown in Figure 14 to Figure 16 The second tuning circuit 303 can be electrically connected between the second feeding point 312 and the second feed source 302, or the second tuning circuit 303 can be electrically connected between the second ground end 316 and the reference ground plate, or the second tuning circuit 303 can be electrically connected between a point of the first radiating section 310 close to the second feeding point 312 and the reference ground plate. The second tuning circuit 303 is used to tune a third frequency band. By setting the second tuning circuit 303, the third frequency band can be switched among the B5 frequency band, the B8 frequency band, the B28 frequency band, and the like.

[0094] Further, the second antenna unit 30 can further include a third tuning circuit 304, as shown in Figure 17 and Figure 18The electronic device 100 further comprises a third antenna unit 40. The third antenna unit 40 comprises a third antenna radiator 401 and a third feed 402. The third antenna radiator 401 comprises a third radiation section 410 and a fourth radiation section 411 connected in series. The third radiation section 410 is arranged on the second side frame 104, and the fourth radiation section 411 is arranged on the bottom frame 103. It can be understood that the third antenna radiator 401 is arranged at a corner formed by the second side frame 104 and the bottom frame 103. In this application, it can be understood that the third radiation section 410 is integrated on the second side frame 104, or it can also be understood that the third radiation section 410 is arranged on the inner side of the second side frame 104; and it can be understood that the fourth radiation section 411 is integrated on the bottom frame 103, or it can also be understood that the fourth radiation section 411 is arranged on the inner side of the bottom frame 103. In other words, the third antenna radiator 401 can be a frame antenna radiator or an internal antenna radiator. For example, the third antenna radiator 401 can be one of a metal frame antenna radiator, an FPC internal antenna radiator, an LDS internal antenna radiator, a PDS internal antenna radiator, and the like. The third feed 402 can be understood as a port of the third antenna unit 40 on the circuit board for electrically connecting the radio frequency chip. The third feed 402 is arranged in the accommodation space formed by the frame 10. For example, the third feed 402 can be arranged on the circuit board of the electronic device 100 and close to the third antenna radiator 401. The third feed 402 is electrically connected to the radio frequency chip and can receive the excitation current provided by the radio frequency chip. The third radiation section 410 or the fourth radiation section 411 is provided with a third feed point 412. In a possible implementation, the third feed point 412 can be arranged on the fourth radiation section 411.

[0095] The third feed 402 is electrically connected to the third feed point 412. The third feed point 412 and the third feed 402 can be directly electrically connected or indirectly electrically connected through a metal spring or the like. The third feed 402 is used to excite the third antenna radiator 401 to form a fourth resonant mode supporting a fourth frequency band. It can be understood that the third antenna radiator 401 can transmit and receive signals of the fourth frequency band when the fourth resonant mode is formed. The fourth frequency band can be the same as the first frequency band.

[0096] In this embodiment, the electronic device 100 further comprises the third antenna unit 40. When the fourth frequency band is the same as the first frequency band, the communication performance of the electronic device 100 can be improved, and the signal coverage area of the electronic device 100 can be expanded. When the fourth frequency band is different from the first frequency band, the application frequency band of the electronic device 100 can be expanded.

[0097] In the first holding scenario, the center frequency point of the fourth frequency band is less than the center frequency point of the first frequency band. In the second holding scenario, the center frequency point of the fourth frequency band is less than the center frequency point of the first frequency band.

[0098] In addition, the first antenna unit 20 is arranged on the first side frame 101, the third radiation segment 410 of the second antenna unit 30 is arranged on the second side frame 104, and the fourth radiation segment 411 is arranged on the bottom frame 103, so that the distance between the first antenna radiator 201 and the third antenna radiator 401 is relatively far, the current distribution of the first antenna radiator 201 is not similar to the current distribution of the third antenna radiator 401, so that the related envelope correlation coefficient (Envelop Correlation Coefficient, ECC) of the electronic device 100 is low, and the channel of the first antenna unit 20 and the third antenna unit 40 is ensured not to affect each other.

[0099] Optionally, referring to Figure 18 to Figure 20 , one end of the third radiation segment 410 away from the fourth radiation segment 411 forms a fifth free end 413, and one end of the fourth radiation segment 411 away from the third radiation segment 410 forms a sixth free end 414; or one of the one end of the third radiation segment 410 away from the fourth radiation segment 411 and the one end of the fourth radiation segment 411 away from the third radiation segment 410 forms a seventh free end 415, and the other of the one end of the third radiation segment 410 away from the fourth radiation segment 411 and the one end of the fourth radiation segment 411 away from the third radiation segment 410 forms a third grounding end 416, and the third grounding end 416 is grounded.

[0100] In a possible implementation, as shown in Figure 18 , one end of the third radiation segment 410 away from the fourth radiation segment 411 forms a fifth free end 413, and one end of the fourth radiation segment 411 away from the third radiation segment 410 forms a sixth free end 414. The third antenna unit 40 in this embodiment can be understood as a T-shaped antenna unit.

[0101] In a possible implementation, as shown in Figure 19 , one end of the third radiation segment 410 away from the fourth radiation segment 411 forms a seventh free end 415, and one end of the fourth radiation segment 411 away from the third radiation segment 410 forms a third grounding end 416, and the third grounding end 416 is grounded. The third antenna unit 40 in this embodiment can be understood as an inverted F-shaped antenna unit.

[0102] In a possible implementation, as shown in Figure 20 , one end of the third radiation segment 410 away from the fourth radiation segment 411 forms a third grounding end 416, and the third grounding end 416 is grounded, and one end of the fourth radiation segment 411 away from the third radiation segment 410 forms a seventh free end 415.

[0103] wherein, referring to Figure 18 to Figure 20 , the third antenna unit 40 can further include a third tuning circuit 403. The third tuning circuit 403 can be electrically connected between the third feeding point 412 and the third feed source 402; or the third tuning circuit 403 can be electrically connected between the third grounding end 416 and the reference ground plane; or the third tuning circuit 403 can be electrically connected between a point of the fourth radiation section 411 close to the third feeding point 412 and the reference ground plane. The third tuning circuit 403 is used for tuning the fourth frequency band. By setting the third tuning circuit 403, the fourth frequency band can be switched in low frequency bands such as B5 frequency band, B8 frequency band, B28 frequency band, etc.

[0104] referring to Figure 21 and Figure 22 , Figure 21 the curve 10 in FIG. 10 is a radiation efficiency curve of the first antenna unit 20 when the electronic device 100 is in a free scene; Figure 12 the curve 11 in FIG. 11 is a radiation efficiency curve of the first antenna unit 20 when the electronic device 100 is in a free scene; Figure 21 the curve 12 in FIG. 12 is a radiation efficiency curve of the first antenna unit 20 when the electronic device 100 is in a hand-held scene; Figure 18 the curve 13 in FIG. 13 is a radiation efficiency curve of the first antenna unit 20 when the electronic device 100 is in a hand-held scene. As can be seen from Figure 22 , when the second antenna unit 30 and the third antenna unit 40 are set, the radiation efficiency of the first antenna unit 20 in a free space scene is reduced. As can be seen from Figure 12 , when the second antenna unit 30 and the third antenna unit 40 are held by hand, the radiation efficiency of the first antenna unit 20 is improved. Therefore, by setting the second antenna unit 30 and the third antenna unit 40 at two corner positions of the bottom frame 103 respectively, when the electronic device 100 is in a hand-held scene, at least part of the second antenna radiator 301 and at least part of the third antenna radiator 401 are held, the radiation efficiency of the first antenna unit 20 can be improved, and the communication performance of the electronic device 100 in a hand-held scene can be improved. Figure 22 Figure 18 Table 1 is a measured value of the radiation efficiency of the electronic device 100 when the first antenna unit 20 works in a free scene, a left-hand scene and a right-hand scene. Table 1: Figure 21 Figure 22

[0105] Figure 18

[0106]

[0107] ​​​​​As can be seen from Table 1, when compared with the free scenario, the efficiency of the electronic device 100 in the first antenna unit 20 working is reduced by about 2dB in the left head hand scenario; when compared with the free scenario, the efficiency of the electronic device 100 in the first antenna unit 20 working is reduced by about 1dB in the right head hand scenario. However, the absorption of the head to the electronic device 100 is generally 2dB-3dB, thus it can be illustrated that by designing the structure of the first antenna radiator 201 and its position in the first side frame 101, so that the target fingers in the first holding scenario and the second holding scenario are overlapped on the target radiation section 213, the communication performance of the first antenna unit 20 of the electronic device 100 in the first holding scenario and the second holding scenario can be improved.

[0108] The features mentioned in the specification, claims and drawings can be combined with each other in any technically meaningful way within the scope of the present application. Although the embodiments of the present application have been shown and described above, it should be understood by those skilled in the art that the above embodiments are exemplary and are not to be construed as limiting the present application, and that changes, modifications, substitutions and variations of the above embodiments can be made by those skilled in the art within the scope of the present application, and these improvements and refinements are also considered as the protection scope of the present application.

Claims

1. An electronic device, comprising: The frame comprises a top frame, a first side frame, a bottom frame and a second side frame connected in sequence, the first side frame comprises a finger overlap area, and the finger overlap area comprises a target finger overlap area. The first antenna unit comprises a first antenna radiator and a first feed source arranged on the first side frame, one end of the first antenna radiator forms a first ground end, the first ground end is grounded, the other end of the first antenna radiator forms a first free end, the first free end is located between the first ground end and the top frame, a first feed point is arranged between the first free end and the first ground end, the first feed source is electrically connected to the first feed point and used to excite the first antenna radiator to form a first resonant mode supporting a first frequency band, the first antenna radiator comprises a target radiation segment, the target radiation segment is a strong current distribution segment in the first resonant mode, at least part of the target radiation segment is arranged in the target finger overlap area, and the target radiation segment can form medium loading on the first resonant mode when a target finger overlaps. The first frequency band is a low frequency band, the first resonant mode comprises a 1 / 4 wavelength mode formed from the first ground end to the first free end, and the first feed point is located between the midpoint of the first antenna radiator and the first ground end.

2. The electronic device of claim 1, wherein, The target radiation segment comprises the first antenna radiator from the first ground end to a target position point, the target position point is located between the first free end and the first feed point, at least one of the first ground end, the first feed point and the target position point is arranged in the target finger overlap area, and the first free end is arranged outside the finger overlap area.

3. The electronic device of claim 2, wherein, The first ground end and / or the first feed point are arranged in the target finger overlap area, and the target position point is arranged outside the finger overlap area.

4. The electronic device of claim 3, wherein, The efficiency of the first resonant mode after the target radiation segment forms medium loading on the first resonant mode is greater than the efficiency of the first resonant mode in a free field scenario.

5. The electronic device of claim 1, wherein, The target finger overlap area is a thumb overlap area in a first holding scenario and a middle finger overlap area in a second holding scenario, one of the first holding scenario and the second holding scenario is a left-hand holding scenario, and the other is a right-hand holding scenario.

6. The electronic device of claim 1, wherein, The first feed source is also used to excite the first antenna radiator to form a second resonant mode supporting a second frequency band, the second frequency band is a medium-high frequency band, and the target radiation segment can also form medium loading on the second resonant mode when the target finger overlaps.

7. The electronic device of claim 6, wherein, The efficiency of the second resonant mode after the target radiation segment forms medium loading on the second resonant mode is greater than the efficiency of the second resonant mode in a free field scenario.

8. The electronic device of claim 7, wherein, The efficiency of the second resonant mode in the first holding scenario is greater than the efficiency of the second resonant mode in a free field scenario, and the efficiency of the second resonant mode in the second holding scenario is greater than the efficiency of the second resonant mode in a free field scenario.

9. The electronic device of claim 7, wherein, ​ 10. The electronic device according to any one of claims 1 to 9, characterized by, The distance between the first free end and the top frame is greater than or equal to 1 / 4 of the length of the first side frame and less than or equal to 5 / 12 of the length of the first side frame.

11. The electronic device of claim 6, wherein, The electronic device further includes a second antenna unit, the second antenna unit including a second antenna radiator and a second feed source, the second antenna radiator including a first radiating segment and a second radiating segment connected in series, the first radiating segment being disposed on the first side frame, the second radiating segment being disposed on the bottom frame, the first radiating segment or the second radiating segment being provided with a second feed point, the second feed source being electrically connected to the second feed point for exciting the second antenna radiator to form a third resonant mode supporting a third frequency band.

12. The electronic device of claim 11, wherein, The first radiating segment forms a second free end away from one end of the second radiating segment, and the second radiating segment forms a third free end away from one end of the first radiating segment; or one of the first radiating segment away from one end of the second radiating segment and the second radiating segment away from one end of the first radiating segment forms a fourth free end, and the other of the first radiating segment away from one end of the second radiating segment and the second radiating segment away from one end of the first radiating segment forms a second ground end, which is grounded.

13. The electronic device of claim 12, wherein, The second feed point is provided on the first radiating segment, one end of the first radiating segment away from the second radiating segment forms the second free end, or one end of the first radiating segment away from the second radiating segment forms the fourth free end; in the first holding scenario, a center frequency point of the third frequency band is less than a center frequency point of the first frequency band; in the second holding scenario, the center frequency point of the third frequency band is less than the center frequency point of the first frequency band.

14. The electronic device of claim 13, wherein, The first resonant mode generates a same-direction resonant current in the second antenna radiator in the first holding scenario; and the first resonant mode generates a same-direction resonant current in the second antenna radiator in the second holding scenario.

15. The electronic device of claim 6, wherein, The electronic device further includes a third antenna unit, the third antenna unit including a third antenna radiator and a third feed source, the third antenna radiator including a third radiating segment and a fourth radiating segment connected in series, the third radiating segment being disposed on the second side frame, the fourth radiating segment being disposed on the bottom frame, the third radiating segment or the fourth radiating segment being provided with a third feed point, the third feed source being electrically connected to the third feed point for exciting the third antenna radiator to form a fourth resonant mode supporting a fourth frequency band.

16. The electronic device of claim 15, wherein, The third radiating segment forms a fifth free end away from one end of the fourth radiating segment, and the fourth radiating segment forms a sixth free end away from one end of the third radiating segment; or one of the third radiating segment away from one end of the fourth radiating segment and the fourth radiating segment away from one end of the third radiating segment forms a seventh free end, and the other of the third radiating segment away from one end of the fourth radiating segment and the fourth radiating segment away from one end of the third radiating segment forms a third ground end, which is grounded.

17. The electronic device of claim 15, wherein, In the first holding scenario, the center frequency point of the fourth frequency band is less than the center frequency point of the first frequency band; in the second holding scenario, the center frequency point of the fourth frequency band is less than the center frequency point of the first frequency band.

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