Electronic device

Abstract

The invention provides electronic equipment which comprises a frame and a first antenna unit, and a first side frame of the frame comprises a target finger lap joint area. The first antenna unit comprises a first antenna radiator and a first feed source which are arranged on the first side frame, one end of the first antenna radiator forms a first grounding end which is grounded, the other end of the first antenna radiator forms a first free end, and the first free end is located between the first grounding end and the top frame of the frame; a first feeding point electrically connected with the first feed source is arranged between the first free end and the first grounding end, the first feed source excites the first antenna radiator to form a first resonance mode supporting a first frequency band, and a target radiation section of the first antenna radiator is a strong current distribution section in the first resonance mode; at least part of the target radiation section is arranged in the target finger lap joint area, and the target radiation section can form medium loading of the first resonance mode when the target finger is in lap joint. According to the electronic equipment provided by the invention, the efficiency in a hand-held scene can be improved.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to an electronic device. Background Art

[0002] In the related art, when an 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 of the invention

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

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

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

[0006] 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 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, the first feed source is electrically connected to the first feeding point, and is used to excite the first antenna radiator to form a first resonant mode supporting a first frequency band, the first antenna radiator includes a target radiation section, the target radiation section is a strong current distribution section under the first resonant mode, at least part of the target radiation section is arranged in the target finger overlapping area, and the target radiation section can form a dielectric loading for the first resonant mode when the target finger is overlapped.

[0007] The electronic device provided in the present application includes a frame and a first antenna unit. Since the first antenna radiator of the first antenna unit is arranged in 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, and 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, and a first feeding point is provided between the first free end and the first grounding end. The first feed source is electrically connected to the first feeding point and is used to excite the first antenna radiator to form a first resonant mode supporting a first frequency band, and the target radiation section of the first antenna radiator, that is, the strong current distribution section under the first resonant mode is at least partially arranged in the target finger overlapping area of ​​the first side frame, so that when the target finger overlaps, a dielectric loading of the first resonant mode can be formed, that is, by designing the structure of the first antenna radiator and its position in the first side frame, the target radiation section improves the efficiency of the first resonant mode when the target finger overlaps, thereby compensating or improving the efficiency of the first resonant mode in the hand-holding scenario, and improving the communication performance of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments are briefly introduced below.

[0009] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0010] Figure 2 for Figure 1 The electronic device shown includes a structural schematic diagram of a frame and a first antenna unit;

[0011] Figure 3 for Figure 1 A schematic diagram of the electronic device shown in the first holding scenario;

[0012] Figure 4 for Figure 1 A schematic diagram of the electronic device shown in the second holding scenario;

[0013] Figure 5 for Figure 4 A schematic diagram showing that the finger contact area of ​​the electronic device in the second holding scenario includes a target finger contact area;

[0014] Figure 6 for Figure 2 A schematic structural diagram of the first antenna unit of the electronic device shown includes a first antenna radiator and a first feed source;

[0015] Figure 7 for Figure 6 A schematic structural diagram of a target radiation section formed from a first ground end of a first antenna radiator of the electronic device to a target position point;

[0016] Figure 8 for Figure 7 A schematic diagram showing that the first feeding point and / or the target position point of the electronic device is arranged in the target finger overlap area;

[0017] Fig. 9 for Figure 7 A schematic diagram showing that the first ground terminal and / or the first feeding point of the electronic device is arranged in the target finger landing area;

[0018] Fig.10 is an efficiency curve of the first antenna unit in the first holding scenario and the free scenario;

[0019] Fig.11 is the efficiency curve of the first antenna unit in the second holding scenario and the free scenario;

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

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

[0022] Fig.14 for Fig.12 The electronic device shown further includes a second antenna unit, and an end of the first radiation section of the second antenna unit away from the second radiation section forms a second free end, and an end of the second radiation section away from the first radiation section forms a third free end;

[0023] Fig.15 for Fig.12 The electronic device shown further includes a second antenna unit, and an end of the first radiation section of the second antenna unit away from the second radiation section forms a fourth free end, and an end of the second radiation section away from the first radiation section forms a second grounding end;

[0024] Fig.16 for Fig.12 The electronic device shown further includes a second antenna unit, and an end of the first radiation section of the second antenna unit away from the second radiation section forms a second grounding end, and an end of the second radiation section away from the first radiation section forms a fourth free end.

[0025] Fig.17 for Fig.13 The electronic device shown also includes a structural schematic diagram of a third antenna unit;

[0026] Fig.18 for Fig.14The electronic device shown further includes a third antenna unit, and an end of the third radiation section of the third antenna unit away from the fourth radiation section forms a fifth free end, and an end of the fourth radiation section away from the third radiation section forms a sixth free end;

[0027] Fig.19 for Fig.14 The electronic device shown further includes a third antenna unit, and an end of the third radiation section of the third antenna unit away from the fourth radiation section forms a seventh free end, and an end of the fourth radiation section away from the third radiation section forms a third grounding end;

[0028] Fig. 20 for Fig.14 The electronic device shown further includes a third antenna unit, and an end of the third radiation section of the third antenna unit away from the fourth radiation section forms a third grounding end, and an end of the fourth radiation section away from the third radiation section forms a seventh free end;

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

[0030] Fig. 22 This is an efficiency curve diagram of the electronic device provided in an embodiment of the present application in a hand-held scenario.

[0031] Description of reference numerals:

[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 terminal 210; first free terminal 211; first feeding point 212; finger landing area A1; target finger landing area A11; target radiation section 213; target position point 214; first tuning circuit 203; second antenna unit 30; second antenna radiator 30 1; second feed source 302; first radiation section 310; second radiation section 311; second feeding point 312; second free end 313; third free end 314; fourth free end 315; second grounding end 316; second tuning circuit 303; third antenna unit 40; third antenna radiator 401; third feed source 402; third feeding point 412; fifth free end 413; sixth free end 414; third grounding end 416; seventh free end 415; third tuning circuit 403. DETAILED DESCRIPTION

[0033] The technical solution provided by the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, not all of the embodiments. Based on the embodiments described in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0034] References to "embodiments" and "implementations" in this application mean that the specific features, structures, or characteristics described in conjunction with the embodiments or implementations may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0035] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned description of the drawings are used to distinguish different objects rather than to describe a specific order; the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example: a component or device comprising one or more parts is not limited to the one or more parts listed, but may optionally include one or more parts that are not listed but inherent to the exemplified product, or one or more parts that it should have based on the described functions. In addition, the terms "end" and "point" in the specification and claims of this application and the above-mentioned description of the drawings may indicate a small section of the antenna radiator relative to the antenna radiator as a whole, that is, "end" cannot be narrowly understood as the end, and "point" cannot be narrowly understood as a point.

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

[0037] Among them, the frame 10 can be a conductive frame, such as a metal frame; it can also be an insulating frame, such as 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 which are sequentially connected end to end. It can be understood that the top frame 102 and the bottom frame 103 are arranged opposite to each other. The first side frame 101 and the second side frame 104 are arranged opposite to each other. In the embodiment of the present application, the top frame 102 and the bottom frame 103 are arranged opposite to each other along the length direction of the electronic device 100, and the first side frame 101 and the second side frame 104 are arranged opposite to each other along the width direction of the electronic device 100. The length direction of the electronic device 100 can be referred to in the attached Figure 2 The Y-axis direction shown; the width direction of the electronic device 100 can refer to the attached Figure 2 The X-axis direction is shown.

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

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

[0040] The present application does not specifically limit the bending connection between the top frame 102 and the first side frame 101, between the first side frame 101 and the bottom frame 103, between the bottom frame 103 and the second side frame 104, and between the second side frame 104 and the top frame 102. For example: the top frame 102 and the first side frame 101, between the first side frame 101 and the bottom frame 103, between the bottom frame 103 and the second side frame 104, and between the second side frame 104 and the top frame 102 can all be bent and connected in a right angle; or, the top frame 102 and the first side frame 101, between the first side frame 101 and the bottom frame 103, between the bottom frame 103 and the second side frame 104, and between the second side frame 104 and the top frame 102 can all be bent and connected in an arc shape. A receiving space is formed between the top frame 102, the first side frame 101, the bottom frame 103, and the second side frame 104.

[0041] The electronic device 100 has a first holding scenario and 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. In the following embodiments, the first holding scenario is a left-hand holding scenario, and the second holding scenario is a right-hand holding scenario. Please refer to Figure 3 and Figure 4 , Figure 3 Schematic diagrams of the back side (left) and the front side (right) of the electronic device 100 in a first holding scenario according to an embodiment of the present application; Figure 4 Schematic diagram of the back (left) and front (right) of the electronic device 100 in the second holding scenario according to an embodiment of the present application. It can be understood that Figure 3 Schematic diagram of the back and front of the electronic device 100 in a left-hand holding scenario, Figure 4 Schematic diagram of the back and front of the electronic device 100 when held in the right hand.

[0042] The first side frame 101 includes a finger-grabbing area. Figure 3 In the first holding scenario, the first side frame 101 of the electronic device 100 of the embodiment of the present application is overlapped by the thumb and part of the palm of the user's left hand, and the second side frame 104 is overlapped by the middle finger, ring finger and little finger of the user's left hand. In the first holding scenario, the finger overlap area of ​​the first side frame 101 can refer to the attached Figure 3 As shown in A1, the following description is the finger overlap area A1. It can be understood that the finger overlap area A1 of the first side frame 101 in the first holding scenario includes the thumb overlap area of ​​the left hand. Figure 4 In the second holding scenario, the electronic device 100 of the embodiment of the present application has the first side frame 101 overlapped by the middle finger, ring finger and little finger of the user's right hand, and the second side frame 104 overlapped by the thumb and part of the palm of the user's right hand. Figure 4 As shown in A1, the finger contact area A1 of the first side frame 101 in the second holding scenario includes the middle finger, ring finger and little finger contact areas of the right hand.

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

[0045] It should be noted that, due to the differences in the sizes of the palms of different users, when different users hold the same electronic device 100 with the same gesture, there will be certain differences in the position where the left thumb overlaps the first side frame 101 in the left-hand holding scenario and the position where the right middle finger overlaps the first side frame 101 in the right-hand holding scenario. As an example, the target finger overlapping area A11 described in the present application can be a corresponding area formed when users with palms of any size hold the electronic device 100 of the present application with the same gesture. For example, the target finger overlapping area A11 of the present application can be an area where the left thumb overlaps the first side frame 101 in the left-hand holding scenario and an area where the right middle finger overlaps the first side frame 101 in the right-hand holding scenario when users with palms of any size hold the electronic device 100 of the present application with the same gesture.

[0046] like Figure 6As shown, the first antenna unit 20 includes a first antenna radiator 201 and a first feed source 202 provided on the first side frame 101. In the present application, the first antenna radiator 201 provided on the first side frame 101 can be understood as the first antenna radiator 201 is integrated on the first side frame 101; or, it can also be understood as the first antenna radiator 201 is provided 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 a built-in antenna radiator. For example: the first antenna radiator 201 can be a metal frame antenna radiator, a flexible printed circuit (Flexible Printed Circuit, FPC) built-in antenna radiator, a laser direct structuring (Laser-Direct-structuring, LDS) built-in antenna radiator, a direct printing (Printing Direct Structure, PDS) built-in antenna radiator, etc. The first feed source 202 can be understood as the port of the first antenna unit 20 on the circuit board for electrically connecting the RF chip. The first feed source 202 is provided in the receiving space formed by the frame 10. For example, the first feed source 202 may be disposed on a circuit board of the electronic device 100 and close to the first antenna radiator 201. The first feed source 202 is electrically connected to the radio frequency chip and can receive an excitation current provided by the radio frequency chip.

[0047] One end of the first antenna radiator 201 forms a first grounding end 210, and the first grounding end 210 is grounded. The grounding of the "grounding end" can be understood as the "grounding end" being directly or indirectly electrically connected to the reference floor of the electronic device 100. The reference floor of the electronic device 100 refers to the part of the electronic device 100 that is not affected by any grounding configuration and is regarded as a conductive earth. The potential of the reference floor is agreed to be zero. For example: the reference floor may include the grounding layer of the main circuit board, the grounding layer of the auxiliary circuit board, the metal parts of the middle frame, and the conductive parts electrically connected to one or more of the grounding layer of the main circuit board, the grounding layer of the auxiliary circuit board, and the metal parts of the middle frame in the electronic device 100. The reference floor is provided in the receiving 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 an isolation gap between it and the conductive part. The first free end 211 is located between the first grounding 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 sequentially arranged along the length direction of the electronic device 100 .

[0048] A first feeding point 212 is provided between the first free end 211 and the first grounding end 210. Optionally, the first feeding point 212 can be provided between the first grounding end 210 and the midpoint of the first antenna radiator 201, that is, the first feeding point 212 can be provided close to the first grounding end 210; or, the first feeding point 212 can be provided between the first free end 211 and the midpoint of the first antenna radiator 201, that is, the first feeding point 212 can be provided close to the first free end 211; or, the first feeding point 212 can be provided at the midpoint of the first antenna radiator 201, that is, the first feeding point 212 is located at the middle position between the first free end 211 and the first grounding end 210. In the present application, the first antenna unit 20 can be understood as an inverted F-type antenna unit.

[0049] The first feed source 202 is electrically connected to the first feed point 212. The first feed source 202 and the first feed point 212 may be directly electrically connected, or may be indirectly electrically connected through electrical connectors such as metal springs and feed lines. The first feed source 202 is used to excite the first antenna radiator 201 to form a first resonant mode supporting the first frequency band. It is understandable that the first antenna radiator 201 can receive and transmit signals in the first frequency band when forming the first resonant 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 in the first antenna radiator 201 where the current is relatively strong. In the first antenna radiator 201 of the present application, since the first ground terminal 210 is grounded and the first free end 211 is open, the current at the first ground terminal 210 is relatively strong and the electric field is relatively weak; the current at 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 radiator in the first antenna radiator 201 that includes the first ground terminal 210 but does not include the first free end 211.

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

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

[0053] The electronic device 100 provided in the present application includes 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, and 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, and the first feed source 202 is electrically connected to the first feeding point 212, for exciting the first antenna radiator 201 to form a first resonant wave supporting a first frequency band. Resonance mode, and the target radiation segment 213 of the first antenna radiator 201, that is, the strong current distribution segment in the first resonance mode, is at least partially arranged in the target finger overlapping area A11 of the first side frame 101, so that when the target finger overlaps, the target radiation segment 213 can form a dielectric loading for the first resonance mode, that is, by designing the structure of the first antenna radiator 201 and its position on the first side frame 101, when the target finger overlaps, the influence of the target radiation segment 213 on the first resonance mode is no longer manifested as absorption of radiation energy but as increase of radiation energy, thereby improving the efficiency of the first resonance mode in the left-hand holding scenario and the right-hand holding scenario, and improving the communication performance of the electronic device 100 in the holding scenario.

[0054] In addition, by locating the first free end 211 between the first grounding end 210 and the top frame 102, the first grounding end 210 is facilitated to be 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, thereby making it easier for the first grounding end 210 to be overlapped by a target finger when the electronic device 100 is used in portrait mode, so that the target radiation section 213 forms a dielectric loading for the first resonant mode when the target finger overlaps. At the same time, the first free end 211 will not be overlapped by a finger or a palm, thereby ensuring the radiation performance of the first antenna radiator 201 and avoiding the occurrence of a "death grip".

[0055] In a possible embodiment, the first frequency band is any frequency band in the low frequency band. The low frequency band is a frequency 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), and 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 end 210 to the first free end 211. Among them, the "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 feeding point 212 is located between the midpoint of the first antenna radiator 201 and the first ground end 210. It can be understood that the first feeding point 212 is relatively close to the first ground end 210 and away from the first free end 211. By locating the first feeding point 212 between the midpoint of the first antenna radiator 201 and the first ground end 210 , it is advantageous to form a 1 / 4 wavelength mode supporting a low frequency band from the first ground end 210 to the first free end 211 .

[0056] Among them, Figure 7 As shown, the target radiation section 213 includes the first antenna radiator 201 from the first ground terminal 210 to the target position point 214. It should be noted that the target radiation section 213 includes the first ground terminal 210, a section of the radiator between the first ground terminal 210 and the target position point 214, and the target position point 214. Among them, the target position point 214 is located between the first free end 211 and the first feeding point 212. The target position point 214 can be relatively close to the first free end 211; or, the target position point 214 can be relatively close to the first feeding point 212. In a possible implementation, the distance between the target position point 214 and the first free end 211 can occupy 1 / 5 of the total length of the first antenna radiator 201. At least one of the first ground terminal 210, the first feeding point 212 and the target position point 214 is arranged in the target finger overlap area A11, and the first free end 211 is arranged outside the finger overlap area A1.

[0057] It can be understood that in the first holding scenario, the left thumb can be connected to one of the first grounding terminal 210, the first feeding point 212, and the target position point 214; or, in the first holding scenario, the left thumb can be connected from the first grounding terminal 210 to the first feeding point 212; or, in the first holding scenario, the left thumb can be connected from the first feeding point 212 to the target position point 214; or, in the first holding scenario, the left thumb can be connected from the first grounding terminal 210 to the target position point 214. In the second holding scenario, the middle finger of the right hand can be connected to one of the first grounding terminal 210, the first feeding point 212, and the target position point 214; or, in the second holding scenario, the middle finger of the right hand can be connected from the first grounding terminal 210 to the first feeding point 212; or, in the first holding scenario, the middle finger of the right hand can be connected from the first feeding point 212 to the target position point 214; or, in the second holding scenario, the middle finger of the right hand can be connected from the first grounding terminal 210 to the target position point 214.

[0058] In a possible implementation, Figure 8 As shown, the first feeding point 212 and / or the target position point 214 are arranged in the target finger overlap area A11, the first grounding end 210 is arranged between the target finger overlap area A11 and the bottom frame 103, and the first free end 211 is arranged between the target finger overlap area A11 and the top frame 102. In this embodiment, a part of the target radiation section 213 close to one side of the first free end 211 is arranged in the target finger overlap area A11.

[0059] In another possible implementation, Fig. 9 As shown, the first ground terminal 210 and / or the first feeding point 212 are arranged in the target finger overlap area A11, and the target position point 214 is arranged outside the finger overlap area A1. The target position point 214 and the first free end 211 are both arranged between the target finger overlap area A11 and the top frame 102. In this embodiment, a portion of the target radiation section 213 close to the first ground terminal 210 is arranged in the target finger overlap area A11.

[0060] Since the current at the first grounding end 210 of the first antenna radiator 201 is relatively strong and the electric field at the first free end 211 is relatively strong, the target radiation segment 213 close to the first grounding end 210 is arranged in the target finger overlapping area A11, compared to the target radiation segment 213 close to the first free end 211 being arranged in the target finger overlapping area A11. This can make the target radiation segment 213 have a better effect of loading the medium on the first resonance mode when the target finger is overlapped, that is, the efficiency compensation or improvement of the first resonance mode in the first holding scenario and the second holding scenario is more obvious.

[0061] The target radiation section 213 forms a medium loading on the first resonance mode, and the efficiency of the first resonance mode is greater than the efficiency of the first resonance mode in a free scene. The following data results take the first frequency band as the B28 frequency band as an example.

[0062] like Fig.10 As shown, Fig.10 : is the efficiency curve of the first antenna unit 20 in the first holding scenario and the free scenario. Fig.10 The middle curve 1 is the efficiency curve of the first antenna unit 20 when only the left thumb is connected to a part of the target radiation section 213 on one side close to the first ground terminal 210, corresponding to Fig. 9 The embodiment shown. Fig.10 The middle curve 2 is the efficiency curve of the first antenna unit 20 when only the left thumb is overlapped with a part of the target radiation section 213 on one side close to the first free end 211, corresponding to Figure 8 The embodiment shown. Fig.10 The middle curve 3 is the efficiency curve of the first antenna unit 20 in a free scenario. Fig.10 The middle curve 4 is the efficiency curve of the first antenna unit 20 in the first holding scenario. Fig.10 The middle curve 5 is an efficiency curve of the first antenna unit 20 in the first holding scenario but when the left thumb is separated from the palm.

[0063] contrast Fig.10 It can be seen from the efficiency of curve 1 and curve 3 in the first frequency band (taking 0.75 GHz as an example) that when only the left thumb is overlapped with the partial target radiation segment 213 on the side close to the first grounding end 210, the efficiency of the first resonance mode is greater than the efficiency of the first resonance mode in the free scenario. Therefore, it can be obtained that when only the left thumb is overlapped with the partial target radiation segment 213 on the side close to the first grounding end 210, the target radiation segment 213 forms a dielectric loading for the first resonance mode, that is, when only the left thumb is overlapped with the partial target radiation segment 213 on the side close to the first grounding end 210, the target radiation segment 213 improves the efficiency of the first resonance mode.

[0064] contrast Fig.10 It can be seen from the efficiency of curve 2 and curve 3 in the first frequency band that when only the left thumb is overlapped with the partial target radiation section 213 on the side close to the first free end 211, the efficiency of the first antenna unit 20 is greater than the efficiency of the first resonant mode in the free scenario. Therefore, it can be obtained that when the left thumb is overlapped with the partial target radiation section 213 on the side close to the first free end 211, the target radiation section 213 forms a dielectric loading for the first resonant mode, that is, when the left thumb is overlapped with the partial target radiation section 213 on the side close to the first free end 211, the target radiation section 213 improves the efficiency of the first resonant mode.

[0065] contrast Fig.10It can be seen from the efficiency of the middle curve 1 and the curve 2 in the first frequency band that the efficiency of the first resonance mode when only the part of the target radiation section 213 close to the first ground terminal 210 is arranged in the left thumb overlap area is higher than the efficiency of the first resonance mode when only the part of the target radiation section 213 close to the first free end 211 is arranged in the left thumb overlap area. In other words, the efficiency of the first resonance mode is improved more when the part of the target radiation section 213 closer to the first ground terminal 210 is arranged in the target finger overlap area A11.

[0066] contrast Fig.10 It can be seen from the efficiency of curves 3 and 4 in the first frequency band that the efficiency of the first resonance mode in the first holding scenario is lower than the efficiency of the first resonance mode in the free scenario. It can be inferred that except for the overlap of the left thumb which increases the radiation energy of the first resonance mode, the overlap of the other fingers and the palm absorbs the radiation energy of the first resonance mode as a whole. Therefore, it can be concluded that the communication performance of the electronic device 100 in the first holding scenario can be improved only when at least part of the target radiation segment 213 is set in the overlap area of ​​the left thumb.

[0067] contrast Fig.10 From the efficiencies of curves 4 and 5 at 0.75 GHz, it can be seen that whether the left thumb is separated from the palm has little effect on the efficiency of the first resonance mode.

[0068] Obviously, based on the above Fig.10 Comparative analysis of the curves shows that when at least part of the target radiation section 213 is disposed in the left thumb overlap area in the first holding scenario, the efficiency of the first resonance mode in the first holding scenario of the electronic device 100 can be improved.

[0069] like Fig.11 As shown, Fig.11 : is the efficiency curve of the first antenna unit 20 in the second holding scenario and the free scenario. Fig.11 The middle curve 6 is the efficiency curve of the first antenna unit 20 when only the middle finger of the right hand is overlapped with the target radiation section 213 . Fig.11 The middle curve 7 is the efficiency curve of the first antenna unit 20 in a free scenario. Fig.11 The middle curve 8 is the efficiency curve of the first antenna unit 20 in the second holding scenario. Fig.11 The middle curve 9 is the efficiency curve of the first antenna unit 20 in the second holding scenario with the right middle finger removed.

[0070] contrast Fig.11It can be seen from the efficiency of curve 6 and curve 7 in the first frequency band that when only the middle finger of the right hand is overlapped with the target radiation section 213, the efficiency of the first resonance mode is greater than the efficiency of the first resonance mode in the free scene, that is, when only the middle finger of the right hand is overlapped with the target radiation section 213, the target radiation section 213 forms a dielectric loading on the first resonance mode, so when the middle finger of the right hand is overlapped with the target radiation section 213, the target radiation section 213 can improve the efficiency of the first resonance mode. Fig.11 From the efficiency of curves 7 and 8 in the first frequency band, it can be seen that the efficiency of the first resonance mode in the second gripping scenario is basically the same as that in the free scenario. It can be inferred that except for the overlap of the right middle finger, which increases the radiation energy of the first resonance mode, the overlap of the other fingers and palm absorbs the radiation energy of the first resonance mode as a whole. In addition, in the first frequency band, the dielectric loading formed by the right middle finger on the first resonance mode is basically the same as the absorption effect formed by other fingers and palms on the first resonance mode. Fig.11 From the efficiency of curve 7 and curve 9 in the first frequency band, it can be seen that when the middle finger of the right hand is not overlapped with the target radiation section 213, and the remaining fingers and palm are in the second holding scenario, the efficiency of the first resonance mode is lower than the efficiency of the first resonance mode in the free scenario. It can be inferred that the fingers and palm of the right hand other than the middle finger absorb the radiation energy of the first resonance mode. Obviously, based on the above comparative analysis, it can be obtained that when at least part of the target radiation section 213 is set in the overlap area of ​​the middle finger of the right hand in the second holding scenario, the efficiency of the first resonance mode when the electronic device 100 is in the second holding scenario can be improved.

[0071] Furthermore, the first feed source is also used to excite the first antenna radiator 201 to form a second resonant mode supporting the second frequency band. It can be understood that the first antenna radiator 201 can receive and transmit signals in the second frequency band when forming the second resonant mode. The second frequency band is different from the first frequency band. In a possible embodiment, the second frequency band may be any frequency band in the medium and high frequency bands (greater than or equal to 1 GHz and less than or equal to 3 GHz). The medium and high frequency bands are frequency bands greater than or equal to 1 GHz and less than or equal to 3 GHz. The second resonant mode may include a 1 / 4 wavelength mode formed from the first feed point 212 to the first free end 211. Among them, the "wavelength" in the 1 / 4 wavelength mode 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 medium loading for the second resonance mode when the target finger overlaps. It can be understood that when the left thumb overlaps at least part of the target radiation section 213 in the first holding scenario, the efficiency of the target radiation section 213 for the second resonance mode is improved, and / or, when the right middle finger overlaps at least part of the target radiation section 213 in the second holding scenario, the efficiency of the target radiation section 213 for the second resonance mode is improved.

[0073] In other words, at least part of the target radiation segment 213 of the first antenna radiator 201 is arranged in the target finger overlapping area A11 of the first side frame 101, so that the target radiation segment 213 can form a dielectric loading for 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, the influence of the overlap of the target finger on the second resonant mode is no longer manifested as absorption of radiation energy but as increase of 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] The efficiency of the second resonance mode after the target radiation section 213 forms a medium loading for the second resonance mode is greater than the efficiency of the second resonance mode in a free scene. The following data results take the second frequency band as a frequency band greater than or equal to 1 GHz as an example.

[0075] Please continue to refer to Fig.10 ,contrast Fig.10 It can be seen from the efficiency of curve 1 and curve 3 at a frequency greater than 1 GHz that when only the left thumb is overlapped with a portion of the target radiation segment 213 on the side close to the first ground terminal 210, the efficiency of the second resonance mode is greater than the efficiency of the second resonance mode in a free scenario. Therefore, it can be concluded that when only the left thumb is overlapped with a portion of the target radiation segment 213 on the side close to the first ground terminal 210, the target radiation segment 213 forms a dielectric loading on the second resonance mode, that is, when only the left thumb is overlapped with a portion of the target radiation segment 213 on the side close to the first ground terminal 210, the target radiation segment 213 improves the efficiency of the second resonance mode.

[0076] contrast Fig.10 It can be seen from the efficiency of curve 2 and curve 3 at a frequency greater than 1 GHz that when only the left thumb is overlapped with the partial target radiation segment 213 on the side close to the first free end 211, the efficiency of the second resonance mode is greater than the efficiency of the second resonance mode in the free scenario. Therefore, it can be concluded that when only the left thumb is overlapped with the partial target radiation segment 213 on the side close to the first free end 211, the target radiation segment 213 forms a dielectric loading for the second resonance mode, that is, when only the left thumb is overlapped with the partial target radiation segment 213 on the side close to the first free end 211, the target radiation segment 213 improves the efficiency of the second resonance mode.

[0077] contrast Fig.10It can be seen from the efficiency of curve 1 and curve 2 at a frequency greater than 1 GHz that the efficiency of the second resonance mode when only the part of the target radiation section 213 close to the first ground terminal 210 is arranged in the left thumb overlap area is higher than the efficiency of the second resonance mode when only the part of the target radiation section 213 close to the first free end 211 is arranged in the left thumb overlap area. In other words, the efficiency of the second resonance mode is improved more when the part of the target radiation section 213 close to the first ground terminal 210 is arranged in the target finger overlap area A11.

[0078] contrast Fig.10 From the efficiency of curves 3 and 4 above 1 GHz, it can be seen that the efficiency of the second resonance mode in the first holding scenario is higher than that in the free scenario. Therefore, it can be inferred that the dielectric loading of the left hand on the second resonance mode in the first holding scenario exceeds the radiation energy absorption of the left hand on the second resonance mode. It is understandable that the efficiency of the second resonance mode in the first holding scenario is greater than that in the free scenario. However, by comparison Fig.10 It can be seen from curves 1 and 4 that the efficiency of the second resonance mode in the first holding scenario is lower than the efficiency of the second resonance mode when only the left thumb overlaps the part of the target radiation segment 213 on the side close to the first ground terminal 210. Therefore, it can be concluded that the overlapping of the left thumb is the main reason for improving the efficiency of the second resonance mode. Therefore, when at least part of the target radiation segment 213 is set in the overlapping area of ​​the left thumb, the communication performance of the electronic device 100 in the first holding scenario can be significantly improved.

[0079] In addition, compared Fig.11 It can be seen from the efficiency of curves 6 and 7 at frequencies greater than 1 GHz that when only the middle finger of the right hand overlaps the target radiation section 213, the efficiency of the second resonance mode is greater than the efficiency of the second resonance mode in a free scenario, that is, when only the middle finger of the right hand overlaps the target radiation section 213, the target radiation section 213 forms a dielectric loading on the second resonance mode. In other words, when the middle finger of the right hand overlaps the target radiation section 213, the target radiation section 213 improves the efficiency of the second resonance mode.

[0080] contrast Fig.11 From the efficiency of curves 7 and 8 above 1 GHz, it can be seen that the efficiency of the second resonance mode in the second gripping scenario is higher than that in the free scenario. Therefore, it can be deduced that the medium loading of the second resonance mode formed by the right hand in the second gripping scenario exceeds the radiation energy absorption of the second resonance mode by the right hand. It is understandable that the efficiency of the second resonance mode in the second gripping scenario is higher than that in the free scenario. However, by comparison Fig.11It can be seen from curves 6 and 8 that the efficiency of the second resonance mode in the second holding scenario is lower than the efficiency of the second resonance mode when only the middle finger of the right hand overlaps the part of the target radiation segment 213 on the side close to the first ground terminal 210. Therefore, it can be concluded that the overlapping of the middle finger of the right hand is the main reason for improving the efficiency of the second resonance mode. Therefore, when at least part of the target radiation segment 213 is set in the overlapping area of ​​the middle finger of the right hand, the communication performance of the electronic device 100 in the second holding scenario can be significantly improved.

[0081] contrast Fig.11 It can be seen from the efficiency of curve 7 and curve 9 at a frequency greater than 1 GHz that when the middle finger of the right hand is not overlapped with the target radiation section 213 and the remaining fingers and palm are in the second holding scenario, the efficiency of the second resonance mode is lower than the efficiency of the second resonance mode in the free scenario, from which it can be inferred that the fingers and palm of the right hand other than the middle finger absorb the radiation energy of the second resonance mode. Obviously, based on the above comparative analysis, it can be obtained that when at least part of the target radiation section 213 is set in the overlap area of ​​the middle finger of the right hand in the second holding scenario, the efficiency of the second resonance mode when the electronic device 100 is in the second holding scenario can be improved.

[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 may be 140 mm to 180 mm. For example, the length of the first side frame 101 may 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 may be 150 mm, and the distance between the first free end 211 and the top frame 102 may be greater than or equal to 37.5 mm, and less than or equal to 62.5 mm.

[0083] By making the distance between the first free end 211 and the top frame 102 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, it is possible to achieve that in the first holding scenario and the second holding scenario, at least part of the target radiation section 213 is arranged in the target finger overlapping area A11.

[0084] like Fig.12 As shown, the first antenna unit 20 may further include a first tuning circuit 203. The first tuning circuit 203 may 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 among low frequency bands such as the B5 frequency band, the B8 frequency band, and the B28 frequency band.

[0085] For further information, please refer to Fig.13 and Fig.14 , the electronic device 100 also includes a second antenna unit 30. The second antenna unit 30 includes a second antenna radiator 301 and a second feed source 302. The second antenna radiator 301 includes a first radiating section 310 and a second radiating section 311 connected to each other. The first radiating section 310 is arranged on the first side frame 101, and the second radiating section 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 the present application, the first radiating section 310 is arranged on the first side frame 101, which can be understood as the first radiating section 310 is integrated on the first side frame 101; or, it can also be understood as the first radiating section 310 is arranged on the inner side of the first side frame 101; the second radiating section 311 is arranged on the bottom frame 103, which can be understood as the second radiating section 311 is integrated on the bottom frame 103; or, it can also be understood as the second radiating section 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 a built-in antenna radiator. For example, the second antenna radiator 301 can be a metal frame antenna radiator, an FPC built-in antenna radiator, an LDS built-in antenna radiator, a PDS built-in antenna radiator, etc. The second feed source 302 can be understood as a port on the circuit board of the second antenna unit 30 for electrically connecting the RF chip. The second feed source 302 is arranged in the receiving space formed by the frame 10. For example, the second feed source 302 can be arranged on the circuit board of the electronic device 100 and close to the second antenna radiator 301. The second feed source 302 is electrically connected to the RF chip and can receive the excitation current provided by the RF chip. The first radiation section 310 or the second radiation section 311 is provided with a second feeding point 312. In a possible embodiment, the second feeding point 312 can be arranged in the first radiation section 310.

[0086] The second feed source 302 is electrically connected to the second feed point 312. The second feed point 312 and the second feed source 302 may be directly electrically connected, or may be indirectly electrically connected through an electrical connector such as a metal spring. The second feed source 302 is used to excite the second antenna radiator 301 to form a third resonance mode supporting a third frequency band. It is understandable that the second antenna radiator 301 can receive and transmit signals in the third frequency band when forming the third resonance mode. The third frequency band may be the same as the first frequency band.

[0087] In this embodiment, the electronic device 100 further includes 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] Optional, see Figures 14 to 16 , one end of the first radiation section 310 away from the second radiation section 311 forms a second free end 313, and one end of the second radiation section 311 away from the first radiation section 310 forms a third free end 314; or, one of the end of the first radiation section 310 away from the second radiation section 311 and the end of the second radiation section 311 away from the first radiation section 310 forms a fourth free end 315, and the other of the end of the first radiation section 310 away from the second radiation section 311 and the end of the second radiation section 311 away from the first radiation section 310 forms a second grounding end 316, and the second grounding end 316 is grounded.

[0089] In a possible implementation, Fig.14 As shown, one end of the first radiation section 310 away from the second radiation section 311 forms a second free end 313, and one end of the second radiation section 311 away from the first radiation section 310 forms a third free end 314. In this embodiment, the second antenna unit 30 can be understood as a T-shaped antenna unit.

[0090] In a possible implementation, Fig.15 As shown, the end of the first radiation section 310 away from the second radiation section 311 forms a fourth free end 315, and the end of the second radiation section 311 away from the first radiation section 310 forms a second grounding end 316. The second grounding end 316 is grounded. In this embodiment, the second antenna unit 30 can be understood as an inverted F-type antenna unit.

[0091] Please refer to Fig.14 and Fig.15 , in the first holding scenario, the center frequency of the third frequency band is less than the center frequency of the first frequency band. In the second holding scenario, the center frequency of the third frequency band is less than the center frequency of the first frequency band. It can be understood that the third resonance mode supporting the third frequency band formed by the second antenna radiator 301 in the first holding scenario and the second holding scenario has a low frequency band deviation. By making the center frequency of the third frequency band less than the center frequency of the first frequency band in the first holding scenario, and the center frequency of the third frequency band less than the center frequency of the first frequency band in the second holding scenario, it can be beneficial for the first antenna radiator 201 to form a HE resonance mode on the second antenna radiator 301 when the first resonance mode and the third resonance mode support the same frequency band. The first antenna radiator 201 forms a HE resonance mode on the second antenna radiator 301, that is, the first resonance mode generates a resonance current in the same direction on the second antenna radiator 301 in the first holding scenario; the first resonance mode generates a resonance current in the same direction on the second antenna radiator 301 in the second holding scenario. Fig.14 and Fig.15The dotted line illustrates the resonant current of the first resonant mode formed by the first antenna radiator 201 and the resonant current of the first resonant mode generated in the same direction in the second antenna radiator 301 under the first holding scenario. The resonant current of the first resonant mode generated in the same direction in the second antenna radiator 301 means that the resonant current generated by the first resonant mode in the second antenna radiator 301 flows in the same direction as the resonant current generated by the first resonant mode in the first antenna radiator 201.

[0092] In a possible implementation, Fig.16 As shown, one end of the first radiation section 310 away from the second radiation section 311 forms a second grounding end 316, and the second grounding end 316 is grounded, and one end of the second radiation section 311 away from the first radiation section 310 forms a fourth free end 315. In this embodiment, the second antenna unit 30 can be understood as an inverted F-type antenna unit.

[0093] Please refer to Figures 14 to 16 The second antenna unit 30 may further include a second tuning circuit 303. The second tuning circuit 303 may be electrically connected between the second feeding point 312 and the second feed source 302; or, the second tuning circuit 303 may be electrically connected between the second ground terminal 316 and the reference floor; or, the second tuning circuit 303 may be electrically connected between a point of the first radiation section 310 close to the second feeding point 312 and the reference floor. The second tuning circuit 303 is used to tune the 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, etc.

[0094] For further information, please refer to Fig.17 and Fig.18, the electronic device 100 also includes a third antenna unit 40. The third antenna unit 40 includes a third antenna radiator 401 and a third feed source 402. The third antenna radiator 401 includes a third radiating section 410 and a fourth radiating section 411 connected to each other. The third radiating section 410 is arranged on the second side frame 104, and the fourth radiating section 411 is arranged on the bottom frame 103. It can be understood that the third antenna radiator 401 is arranged at the corner formed by the second side frame 104 and the bottom frame 103. In the present application, the third radiating section 410 is arranged on the second side frame 104, which can be understood as the third radiating section 410 is integrated on the second side frame 104; or, it can also be understood as the third radiating section 410 is arranged on the inner side of the second side frame 104; the fourth radiating section 411 is arranged on the bottom frame 103, which can be understood as the fourth radiating section 411 is integrated on the bottom frame 103; or, it can also be understood as the fourth radiating 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 a built-in antenna radiator. For example, the third antenna radiator 401 can be one of a metal frame antenna radiator, an FPC built-in antenna radiator, an LDS built-in antenna radiator, a PDS built-in antenna radiator, and the like. The third feed source 402 can be understood as a port of the third antenna unit 40 on the circuit board for electrically connecting the RF chip. The third feed source 402 is arranged in the receiving space formed by the frame 10. For example, the third feed source 402 can be arranged on the circuit board of the electronic device 100 and close to the third antenna radiator 401. The third feed source 402 is electrically connected to the RF chip and can receive the excitation current provided by the RF chip. The third radiation section 410 or the fourth radiation section 411 is provided with a third feeding point 412. In a possible embodiment, the third feeding point 412 can be arranged in the fourth radiation section 411.

[0095] The third feed source 402 is electrically connected to the third feed point 412. The third feed point 412 and the third feed source 402 may be directly electrically connected, or may be indirectly electrically connected through an electrical connector such as a metal spring. The third feed source 402 is used to excite the third antenna radiator 401 to form a fourth resonant mode supporting a fourth frequency band. It is understandable that the third antenna radiator 401 can receive and transmit signals in a fourth frequency band when forming a fourth resonant mode. The fourth frequency band may be the same as the first frequency band.

[0096] In this embodiment, the electronic device 100 also includes a 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 of the fourth frequency band is lower than the center frequency of the first frequency band. In the second holding scenario, the center frequency of the fourth frequency band is lower than the center frequency of the first frequency band.

[0098] In addition, the first antenna unit 20 is arranged on the first side frame 101, the third radiation section 410 of the second antenna unit 30 is arranged on the second side frame 104, and the fourth radiation section 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, and 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 correlation envelope coefficient (Envelop Correlation Coefficient, ECC) of the electronic device 100 can be lower, ensuring that the channels of the first antenna unit 20 and the third antenna unit 40 do not affect each other.

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

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

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

[0102] In a possible implementation, Fig. 20 As shown, 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. One end of the fourth radiation segment 411 away from the third radiation segment 410 forms a seventh free end 415 .

[0103] Please refer to Figures 18 to 20 , the third antenna unit 40 may further include a third tuning circuit 403. The third tuning circuit 403 may be electrically connected between the third feeding point 412 and the third feed source 402; or, the third tuning circuit 403 may be electrically connected between the third ground terminal 416 and the reference floor; or, the third tuning circuit 403 may be electrically connected between a point of the fourth radiation segment 411 close to the third feeding point 412 and the reference floor. The third tuning circuit 403 is used to tune the fourth frequency band. By setting the third tuning circuit 403, the fourth frequency band can be switched among low frequency bands such as the B5 band, the B8 band, and the B28 band.

[0104] Please refer to Fig.21 and Fig. 22 , Fig.21 The middle curve 10 is Fig.12 The radiation efficiency curve of the first antenna unit 20 when the electronic device 100 is in a free scene is shown; Fig.21 The middle curve 11 is Fig.18 The radiation efficiency curve of the first antenna unit 20 when the electronic device 100 is in a free scene is shown; Fig. 22 The middle curve 12 is Fig.12 The radiation efficiency curve of the first antenna unit 20 when the electronic device 100 is in a hand-held scenario is shown; Fig. 22 The middle curve 13 is Fig.18 The radiation efficiency curve of the first antenna unit 20 when the electronic device 100 is in a hand-held scenario is shown. Fig.21 It can be seen from FIG. 1 that after the second antenna unit 30 and the third antenna unit 40 are set, the radiation efficiency of the first antenna unit 20 in the free space scenario is reduced. Fig. 22 It can be seen that 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, the second antenna unit 30 and the third antenna unit 40 are respectively arranged at the two corners of the bottom frame 103, so that when the electronic device 100 is in a hand-held scenario, at least part of the second antenna radiator 301 and at least part of the third antenna radiator 401 are held, which can improve the radiation efficiency of the first antenna unit 20 and improve the communication performance of the electronic device 100 in the hand-held scenario.

[0105] Table 1 Fig.18 The radiation efficiency measured values ​​of the electronic device 100 when the first antenna unit 20 works in the free scene, the left head-hand scene and the right head-hand scene are shown in Table 1:

[0106]

[0107] It can be seen from Table 1 that, compared with the free scene, the efficiency of the electronic device 100 when the first antenna unit 20 is working is reduced by about 2dB in the left head and hand scene; compared with the free scene, the efficiency of the electronic device 100 when the first antenna unit 20 is working is reduced by about 1dB in the right head and hand scene. However, under normal circumstances, the absorption effect of the head on the electronic device 100 is 2dB to 3dB, which can be explained by designing the structure of the first antenna radiator 201 and its position on the first side frame 101, so that the target finger in the first holding scene and the second holding scene overlaps the target radiation section 213, which can improve the communication performance of the first antenna unit 20 of the electronic device 100 in the first holding scene and the second holding scene.

[0108] The features mentioned in the specification, claims and drawings can be arbitrarily combined with each other as long as they are meaningful within the scope of this application. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of this application, and these improvements and modifications are also regarded as the protection scope of this application.

Claims

1. An electronic device, characterized in that: include: A frame, comprising a top frame, a first side frame, a bottom frame and a second side frame connected end to end in sequence, wherein the first side frame comprises a finger overlap area, and the finger overlap area comprises a target finger overlap area; and 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 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, the first feed source is electrically connected to the first feeding point, and is used to excite the first antenna radiator to form a first resonant mode supporting a first frequency band, the first antenna radiator includes a target radiation section, the target radiation section is a strong current distribution section under the first resonant mode, at least part of the target radiation section is arranged in the target finger overlapping area, and the target radiation section can form a dielectric loading for the first resonant mode when the target finger is overlapped.

2. The electronic device according to claim 1, characterized in that: The first frequency band is a low frequency band, the first resonance mode includes a 1 / 4 wavelength mode formed from the first ground end to the first free end, and the first feeding point is located between the midpoint of the first antenna radiator and the first ground end.

3. The electronic device according to claim 2, characterized in that: The target radiation section includes 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 feeding point, at least one of the first ground end, the first feeding point and the target position point is arranged in the target finger overlapping area, and the first free end is arranged outside the finger overlapping area.

4. The electronic device according to claim 3, characterized in that: The first ground terminal and / or the first feeding point are arranged in the target finger overlapping area, and the target position point is arranged outside the finger overlapping area.

5. The electronic device according to claim 1, characterized in that: After the target radiation section forms a medium loading for the first resonance mode, the efficiency of the first resonance mode is greater than the efficiency of the first resonance mode in a free scenario.

6. The electronic device according to claim 1, characterized in that: 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.

7. The electronic device according to claim 5, characterized in that: The first feed source is also used to excite the first antenna radiator to form a second resonant mode supporting a second frequency band, where the second frequency band is a medium to high frequency band. The target radiating section can also form a dielectric loading for the second resonant mode when the target finger is overlapped.

8. The electronic device according to claim 6, characterized in that: After the target radiation section forms a medium loading on the second resonance mode, the efficiency of the second resonance mode is greater than the efficiency of the second resonance mode in a free scene.

9. The electronic device according to claim 7, characterized in that: The efficiency of the second resonance mode in the first holding scenario is greater than the efficiency of the second resonance mode in a free scenario, and the efficiency of the second resonance mode in the second holding scenario is greater than the efficiency of the second resonance mode in a free scenario.

10. The electronic device according to any one of claims 1 to 9, characterized in that: 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 according to claim 6, characterized in that: The electronic device also includes a second antenna unit, the second antenna unit includes a second antenna radiator and a second feed source, the second antenna radiator includes a first radiating section and a second radiating section connected to each other, the first radiating section is arranged on the first side frame, the second radiating section is arranged on the bottom frame, the first radiating section or the second radiating section is provided with a second feeding point, and the second feed source is electrically connected to the second feeding point for exciting the second antenna radiator to form a third resonant mode supporting a third frequency band.

12. The electronic device according to claim 11, characterized in that: One end of the first radiation section away from the second radiation section forms a second free end, and one end of the second radiation section away from the first radiation section forms a third free end; or, one of an end of the first radiation section away from the second radiation section and an end of the second radiation section away from the first radiation section forms a fourth free end, and the other of an end of the first radiation section away from the second radiation section and an end of the second radiation section away from the first radiation section forms a second grounding end, and the second grounding end is grounded.

13. The electronic device according to claim 12, characterized in that: The second feeding point is arranged in the first radiation section, and the end of the first radiation section away from the second radiation section forms the second free end, or the end of the first radiation section away from the second radiation section forms the fourth free end; in the first holding scenario, the center frequency of the third frequency band is less than the center frequency of the first frequency band; in the second holding scenario, the center frequency of the third frequency band is less than the center frequency of the first frequency band.

14. The electronic device according to claim 13, characterized in that: The first resonance mode generates a resonance current in the same direction in the second antenna radiator in the first holding scenario; the first resonance mode generates a resonance current in the same direction in the second antenna radiator in the second holding scenario.

15. The electronic device according to claim 6, characterized in that: The electronic device also includes a third antenna unit, which includes a third antenna radiator and a third feed source. The third antenna radiator includes a third radiating section and a fourth radiating section that are connected. The third radiating section is arranged on the second side frame, and the fourth radiating section is arranged on the bottom frame. The third radiating section or the fourth radiating section is provided with a third feeding point. The third feed source is electrically connected to the third feeding point and is used to excite the third antenna radiator to form a fourth resonant mode supporting a fourth frequency band.

16. The electronic device according to claim 15, characterized in that: One end of the third radiation section away from the fourth radiation section forms a fifth free end, and one end of the fourth radiation section away from the third radiation section forms a sixth free end; or, one of an end of the third radiation section away from the fourth radiation section and an end of the fourth radiation section away from the third radiation section forms a seventh free end, and the other of an end of the third radiation section away from the fourth radiation section and an end of the fourth radiation section away from the third radiation section forms a third grounding end, and the third grounding end is grounded.

17. The electronic device according to claim 15, characterized in that: In the first holding scenario, the center frequency of the fourth frequency band is lower than the center frequency of the first frequency band; in the second holding scenario, the center frequency of the fourth frequency band is lower than the center frequency of the first frequency band.

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