Electronic device

Abstract

The embodiment of the invention provides an electronic device, which comprises a floor, which comprises a first side edge and a second side edge; a first radiator; a second radiator; the feed source is used for feeding a first excitation signal into the first radiating body and feeding a second excitation signal into the second radiating body; the first excitation signal is used for exciting the first radiator and the floor to jointly generate first resonance, and the first resonance generates first resonance current on the floor; the second excitation signal is used for exciting the second radiator and the floor to jointly generate second resonance, and the second resonance generates second resonance current on the floor; the first resonance current and the second resonance current form a combined current on the floor, and the first excitation signal and the second excitation signal have a phase difference, so that the component of the combined current along the first side edge is larger than that along the second side edge. According to the electronic equipment provided by the embodiment of the invention, higher antenna radiation efficiency can be obtained, and the wireless communication performance of the electronic equipment is improved.

Description

Technical Field

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

[0002] Electronic devices such as smartphones are equipped with antennas to achieve wireless communication functions.

[0003] In the related technology, with the continuous evolution of antenna design, due to factors such as the miniaturization, thinness, and high screen-to-body ratio of electronic devices, the antenna clearance has continued to shrink, resulting in the antenna performance becoming very limited, especially in the low frequency band (0.617GHz~0.96GHz), the antenna radiation efficiency is poor. Summary of the invention

[0004] An embodiment of the present application provides an electronic device, which can improve the efficiency of the electronic device in radiating wireless signals, thereby improving the wireless communication performance of the electronic device.

[0005] An embodiment of the present application provides an electronic device, including:

[0006] A floor, the floor comprising a first side and a second side, the first side and the second side are connected and perpendicular to each other, and the length of the first side is greater than the length of the second side;

[0007] a first radiator, disposed along the first side and electrically connected to the floor;

[0008] a second radiator, disposed along the first side and electrically connected to the floor;

[0009] A feed source, electrically connected to the first radiator and the second radiator, the feed source being used to feed a first excitation signal to the first radiator and a second excitation signal to the second radiator;

[0010] The first excitation signal is used to excite the first radiator and the floor to jointly generate a first resonance, and the first resonance generates a first resonant current on the floor;

[0011] The second excitation signal is used to excite the second radiator and the floor to jointly generate a second resonance, the second resonance generates a second resonance current on the floor, and the frequency band of the second resonance is the same as the frequency band of the first resonance;

[0012] The first resonant current and the second resonant current form a resultant current on the floor, and the first excitation signal and the second excitation signal have a phase difference so that a component of the resultant current along the first side is greater than a component along the second side.

[0013] In the electronic device of the embodiment of the present application, by setting the first excitation signal and the second excitation signal to have a phase difference, the resultant current of the first resonant current and the second resonant current can be mainly along the first side of the floor, so that a larger size of the floor can be jointly excited to produce resonance, thereby enhancing the longitudinal resonance of the floor and weakening the lateral resonance of the floor, thereby enhancing the intensity of wireless signal radiation from the first radiator, the second radiator and the floor as a whole, obtaining a higher antenna radiation efficiency, and improving the wireless communication performance of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0015] Figure 1 This is a schematic diagram of the first structure of an electronic device according to an embodiment of the present application.

[0016] Figure 2 for Figure 1 A schematic diagram of the structure of a metal middle frame of an electronic device is shown.

[0017] Figure 3 Schematic diagram of the distribution of the first resonant current of the floor in the electronic device according to an embodiment of the present application.

[0018] Figure 4 Schematic diagram of the distribution of the second resonant current of the floor in the electronic device according to an embodiment of the present application.

[0019] Figure 5 Schematic diagram of the phase difference between the first excitation signal and the second excitation signal according to an embodiment of the present application.

[0020] Figure 6 Schematic diagram of distribution of the combined current of the first resonant current and the second resonant current of the floor in the electronic device according to an embodiment of the present application.

[0021] Figure 7 This is a second structural schematic diagram of an electronic device according to an embodiment of the present application.

[0022] Figure 8 This is a third structural schematic diagram of the electronic device according to an embodiment of the present application.

[0023] Fig. 9 This is a fourth structural schematic diagram of an electronic device according to an embodiment of the present application.

[0024] Fig.10 A schematic diagram of S parameters of an electronic device according to an embodiment of the present application.

[0025] Fig.11 A schematic diagram of the radiation efficiency of an electronic device according to an embodiment of the present application.

[0026] Fig.12 This is a schematic diagram of the electronic device according to an embodiment of the present application when held in the left hand of a user.

[0027] Fig.13 This is a schematic diagram of the electronic device according to an embodiment of the present application when held in the right hand of a user.

[0028] Fig.14 This is a schematic diagram of system efficiency of the first radiator of the electronic device according to an embodiment of the present application operating in the B8 frequency band.

[0029] Fig.15 Schematic diagram of system efficiency of an electronic device according to an embodiment of the present application operating in the B8 frequency band.

[0030] Fig.16 This is a schematic diagram of the system efficiency of the first radiator of the electronic device according to an embodiment of the present application operating in the B28 frequency band.

[0031] Fig.17 Schematic diagram of system efficiency of an electronic device according to an embodiment of the present application operating in the B28 frequency band. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0033] An embodiment of the present application provides an electronic device, which may be, for example, a smart phone, a tablet computer, a gaming device, an AR (Augmented Reality) device, a laptop computer, a desktop computing device, or other device with a wireless communication function.

[0034] refer to Figure 1 , Figure 1 1 is a schematic diagram of a first structure of an electronic device 100 according to an embodiment of the present application. The electronic device 100 includes a first radiator 11 , a second radiator 12 , a feed source 13 and a floor 19 .

[0035] The floor 19 may form a reference ground, or a system ground, of the electronic device 100. In practical applications, the floor 19 may be formed by a conductor structure in the electronic device 100, a metal layer on a circuit board, or other structures.

[0036] In some embodiments, Figure 1 As shown, the electronic device 100 also includes a metal middle frame 20. The metal middle frame 20 includes a main body 21 and a metal frame 22 surrounding the periphery of the main body 21. In practical applications, the main body 21 and the metal frame 22 can be made of metal or alloy, such as magnesium alloy, aluminum alloy, etc. Among them, the floor 19 can be formed by the main body 21.

[0037] The first radiator 11 and the second radiator 12 can be antenna radiators in the form of FPC (Flexible Printed Circuit), LDS (Laser Direct Structure), PDS (Printing Direct Structure), etc., or they can be antenna radiators formed by structures such as conductor structures of electronic equipment and metal traces on circuit boards. In practical applications, the first radiator 11 and the second radiator 12 can be antenna radiators of different forms or antenna radiators of the same form. The shape and size of the first radiator 11 and the second radiator 12 can be set according to actual needs. Among them, the first radiator 11 and the second radiator 12 are both electrically connected to the floor 19 to achieve grounding.

[0038] The feed source 13 may be disposed on a circuit board of the electronic device, such as a main board, or may be disposed on a separate small board. The feed source 13 is used to provide an excitation signal, which may be, for example, a 4G excitation signal, a 5G excitation signal, or the like.

[0039] Among them, the feed source 13 is electrically connected to the first radiator 11 and the second radiator 12. The feed source 13 is used to feed a first excitation signal to the first radiator 11, and to feed a second excitation signal to the second radiator 12. The first excitation signal is used to excite the first radiator 11 and the floor 19 to jointly generate a first resonance, thereby radiating a wireless signal of the first resonance to the outside world. The second excitation signal is used to excite the second radiator 12 and the floor 19 to jointly generate a second resonance, thereby radiating a wireless signal of the second resonance to the outside world. It can be understood that since the first radiator 11 and the second radiator 12 share the same feed source 13, the communication information carried by the first excitation signal and the second excitation signal is the same.

[0040] In the embodiment of the present application, the frequency band of the second resonance is the same as the frequency band of the first resonance, for example, both can be low-frequency bands, and the frequency range of the low-frequency band is 690MHz to 960MHz. For example, in an example of practical application, the frequency band of the second resonance and the frequency band of the first resonance can both be 4G communication B8 (uplink frequency 880MHz to 915MHz, downlink frequency 925MHz to 960MHz), B28 (uplink frequency 703MHz to 748MHz, downlink frequency 758MHz to 803MHz) and other frequency bands.

[0041] In some embodiments, the first radiator 11 includes a first end 111 and a second end 112 opposite to each other. The first end 111 is grounded, and the second end 112 is a free end. The feed source 13 is electrically connected between the first end 111 and the second end 112 to feed a first excitation signal. Therefore, the first radiator 11 can form a first IFA (Inverted-F antenna) antenna. The first IFA antenna forms a first open end at the second end 112. In practical applications, the first IFA antenna can be a quarter-wavelength antenna, which is a wavelength corresponding to the center frequency of the first resonance.

[0042] The second radiator 12 includes a third end 121 and a fourth end 122 opposite to each other. The third end 121 is grounded, and the fourth end 122 is a free end. The feed source 13 is electrically connected between the third end 121 and the fourth end 122 to feed a second excitation signal. Therefore, the second radiator 12 can form a second IFA antenna. The second IFA antenna forms a second open end at the fourth end 122. In practical applications, the second IFA antenna can also be a quarter-wavelength antenna, which is a wavelength corresponding to the center frequency of the second resonance.

[0043] Also refer to Figure 2 , Figure 2 for Figure 1 A schematic structural diagram of a metal middle frame 20 of an electronic device is shown.

[0044] The main body 21 includes a first side 211 and a second side 212. The first side 211 can be understood as the first side of the floor 19, and the second side 212 can be understood as the second side of the floor 19. The first side 211 is connected to the second side 212, and the first side 211 and the second side 212 are perpendicular to each other. The length of the first side 211 is greater than the length of the second side 212, that is, the first side 211 is the long side, and the second side 212 is the short side. When the electronic device 100 is used in portrait mode by the user, the first side 211 can be understood as the longitudinal side, and the second side 212 can be understood as the transverse side.

[0045] In some embodiments, the first radiator 11 and the second radiator 12 are both arranged along the first side 211 and electrically connected to the floor 19. For example, in a feasible example, the first radiator 11 and the second radiator 12 are both arranged parallel to the first side 211. In this case, the first opening end of the first IFA antenna is opposite to the second opening end of the second IFA antenna. There is a gap 10a between the first opening end and the second opening end.

[0046] The metal frame 22 includes a first metal branch 22a and a second metal branch 22b. The gap 10a is formed between the first metal branch 22a and the second metal branch 22b. The first metal branch 22a forms the first radiator 11, and the second metal branch 22b forms the second radiator 12. Therefore, the metal frame 22 can be reused to form the first radiator 11 and the second radiator 12, thereby saving the layout space inside the electronic device 100.

[0047] In some embodiments, the metal frame 22 includes a third side 221 and a fourth side 222. The third side 221 and the fourth side 222 are connected to form a corner 223. In practical applications, the third side 221 can be a long side of the electronic device 100, and the third side 221 is parallel to the first side 211 of the main body 21. The fourth side 222 can be a short side of the electronic device 100, and the fourth side 222 is parallel to the second side 212 of the main body 21. The length of the third side 221 is greater than the length of the fourth side 222.

[0048] The first radiator 11 (first metal branch 22a) is located at the third side 221 and close to the fourth side 222. The first radiator 11 includes a first return point 113, which is located at the first end 111 of the first radiator 11. The first return point 113 is used for grounding, for example, the first return point 113 is connected to the floor 19 to achieve grounding. The first return point 113 is close to the corner 223. Therefore, the first open end of the first IFA antenna formed by the first radiator 11 can be directed toward the second radiator 12.

[0049] The second radiator 12 (the second metal branch 22b) is located at the third side 221 and away from the fourth side 222. The second radiator 12 includes a second return point 123, which is located at the third end 121 of the second radiator 12. The second return point 123 is used for grounding, for example, the second return point 123 is connected to the floor 19 to achieve grounding. The second return point 123 is located at an end of the second radiator 12 away from the first radiator 11. Therefore, the second open end of the second IFA antenna formed by the second radiator 12 can be directed toward the first radiator 11.

[0050] refer to Figure 3 , Figure 3 Schematic diagram of the distribution of the first resonant current of the floor 19 in the electronic device of the embodiment of the present application. When the first excitation signal excites the first radiator 11 and the floor 19 to jointly generate the first resonance, the first resonance generates the first resonant current I on the floor 19 12 , the first resonant current I 12 The direction of Figure 3 In some embodiments, the first resonant current I 12 Including the first current I 1 and the second current I 2 Among them, the first current I 1 Parallel to the first side 211 of the floor 19, the second current I 2 The second side edge 212 is parallel to the floor 19 .

[0051] refer to Figure 4 , Figure 4 Schematic diagram of the distribution of the second resonant current of the floor 19 in the electronic device of the embodiment of the present application. When the second excitation signal excites the second radiator 12 and the floor 19 to jointly generate the second resonance, the second resonance generates a second resonant current I on the floor 19. 34 , the second resonant current I 34 The direction of Figure 4 In some embodiments, the second resonant current I 34 Including the third current I 3 and the fourth current I 4 Among them, the third current I 3 Parallel to the first side 211 of the floor 19, the fourth current I 4 The second side edge 212 is parallel to the floor 19 .

[0052] In the embodiment of the present application, the first resonant current I on the floor 19 12 and the second resonant current I 34 A combined current is formed on the floor. The first excitation signal and the second excitation signal have a phase difference, so that the component of the combined current along the first side 211 is greater than the component along the second side 212, that is, the combined current mainly flows along the first side 211. Figure 5 As shown, Figure 5 Schematic diagram of the phase difference between the first excitation signal and the second excitation signal of the embodiment of the present application. Wherein, S1 represents the first excitation signal, S2 represents the second excitation signal, i represents the signal amplitude, t represents the time, and θ represents the phase difference between the first excitation signal S1 and the second excitation signal S2. In practical applications, the phase difference θ can be determined according to actual conditions, for example, the phase difference θ can be 30 degrees, 90 degrees, 180 degrees, etc. In an example of practical application, the phase difference θ can be 180 degrees.

[0053] It can be understood that by setting the first excitation signal and the second excitation signal to have a phase difference, the first resonant current I 12 and the second resonant current I 34 The combined current is mainly along the first side edge 211 of the floor 19, so it can jointly excite the larger size of the floor 19 to produce resonance, thereby enhancing the longitudinal resonance of the floor 19 and weakening the lateral resonance of the floor 19, thereby enhancing the intensity of the wireless signal radiated by the first radiator 11, the second radiator 12 and the floor 19 as a whole, obtaining a higher antenna radiation efficiency and improving the wireless communication performance of the electronic device.

[0054] In some embodiments, the first excitation signal and the second excitation signal have a phase difference, which can make the first current I 1 The direction of the third current I 3 The direction of the second current I 2 The direction of the fourth current I 4 The direction is opposite, so the first current I 1 and the third current I 3 can be superimposed on each other, the second current I 2 and the fourth current I 4 can at least partially offset. Thus, the first current I 1 and the third current I 3 The superposition of the two currents can increase the component of the combined current along the first side 211, and the second current I 2 and the fourth current I 4 At least partially canceling out the current can reduce the component of the resultant current along the second side 212 , such that the component of the resultant current along the first side 211 is greater than the component along the second side 212 .

[0055] In practical applications, the shape, size and other parameters of the first radiator 11 and the second radiator 12 can be adjusted, and / or the distance between the first radiator 11 and the second radiator 12 and the floor 19 can be adjusted to adjust the first resonant current I 12 and the second resonant current I 34 distribution, so that the second current I 2 The magnitude of the fourth current I 4 In this case, the second current I 2 With the fourth current I 4 The components of the combined current along the second side 212 are offset, so that the component of the combined current along the second side 212 is 0, and the combined current is parallel to the first side 211. Therefore, the component of the combined current along the first side 211 is maximum, and the component along the second side 212 is minimum, so that the strength of the wireless signal radiated by the first radiator 11, the second radiator 12 and the floor 19 as a whole is optimal, and the wireless communication performance of the electronic device can also be optimal.

[0056] refer to Figure 6 , Figure 6 Schematic diagram of the distribution of the combined current of the first resonant current and the second resonant current of the floor 19 in the electronic device of the embodiment of the present application. 12 and the second resonant current I 34 The total current is I 5 , I 5 The component along the first side 211 reaches the maximum, and the component along the second side 212 is 0. At this time, the combined current I 5 Parallel to the first side 211 .

[0057] Continue to refer Figure 1 In practical applications, the electronic device 100 may further include a first transmission line 14, a second transmission line 15, and a third transmission line 16. The first transmission line 14, the second transmission line 15, and the third transmission line 16 may be transmission lines of microstrip lines, strip lines, and the like.

[0058] Among them, one end of the first transmission line 14 is electrically connected to the first radiator 11. One end of the second transmission line 15 is electrically connected to the second radiator 12. One end of the third transmission line 16 is electrically connected to the other end of the first transmission line 14 and the other end of the second transmission line 15, and the other end of the third transmission line 16 is electrically connected to the feed source 13. The feed source 13 is used to feed the first excitation signal to the first radiator 11 through the third transmission line 16 and the first transmission line 14, and to feed the second excitation signal to the second radiator 12 through the third transmission line 16 and the second transmission line 15.

[0059] In some embodiments, reference Figure 7 , Figure 7 This is a second structural diagram of the electronic device 100 according to an embodiment of the present application.

[0060] The length of the first transmission line 14 is L 1 , the length of the second transmission line 15 is L 2 In the embodiment of the present application, the lengths of the first transmission line 14 and the second transmission line 15 can be constrained so that the length L of the first transmission line 14 is 1 The length L of the second transmission line 15 2 Different, so that the first excitation signal and the second excitation signal have a phase difference. In practical applications, by designing L 1 With L 2 The difference can make the above phase difference θ reach the required value.

[0061] In an example of practical application, Figure 7 As shown, the length L of the first transmission line 14 can be 1Less than the length L of the second transmission line 15 2 In another example of practical application, the length L of the first transmission line 14 can also be 1 Greater than the length L of the second transmission line 15 2 .

[0062] In some embodiments, reference Figure 8 , Figure 8 This is a third structural diagram of the electronic device 100 according to an embodiment of the present application.

[0063] The electronic device 100 further includes a phase shifter 17. The phase shifter 17 is arranged on the first transmission line 14 or the second transmission line 15, for example Figure 8 As shown, the phase shifter 17 can be arranged on the first transmission line 14. The phase shifter 17 is used to adjust the phase of the signal flowing through so that the first excitation signal and the second excitation signal have a phase difference. In practical applications, the required phase shifter specifications can be selected so that the above phase difference θ reaches the required value.

[0064] In some embodiments, reference Fig. 9 , Fig. 9 This is a fourth structural diagram of the electronic device 100 according to an embodiment of the present application.

[0065] The electronic device 100 further includes a matching network 18. The matching network 18 may include impedance elements such as inductors and capacitors. When the matching network 18 includes multiple inductors or capacitors, the multiple inductors or capacitors may be connected in series or in parallel.

[0066] The matching network 18 is disposed between the third transmission line 16 and the feed source 13. The matching network 18 is used to perform impedance matching on the first radiator 11 and the second radiator 12, so that the first radiator 11 and the second radiator 12 can reach a better resonance state.

[0067] refer to Fig.10 and Fig.11 , Fig.10 is a schematic diagram of S parameters of the electronic device 100 according to an embodiment of the present application, Fig.11 FIG. 1 is a schematic diagram of the radiation efficiency of the electronic device 100 according to an embodiment of the present application.

[0068] like Fig.10 As shown, L11 is the S parameter curve when the first radiator 11 resonates with the floor 19; L12 is the S parameter curve when the second radiator 12 resonates with the floor 19; L13 is the S parameter curve when the first radiator 11 and the second radiator 12 share the same feed source 13 and resonate with the floor 19. Fig.10It can be seen that when the first radiator 11 and the second radiator 12 share the same feed source 13 , the working bandwidth at -3 dB is wider, so the bandwidth of the electronic device 100 can be expanded.

[0069] like Fig.11 As shown, L21 is the radiation efficiency curve when the first radiator 11 resonates with the floor 19; L22 is the system efficiency when the first radiator 11 resonates with the floor 19; L31 is the radiation efficiency curve when the second radiator 12 resonates with the floor 19, and L32 is the system efficiency when the second radiator 12 resonates with the floor 19; L41 is the radiation efficiency when the first radiator 11 and the second radiator 12 share the same feed source 13 and resonate with the floor 19, and L42 is the system efficiency when the first radiator 11 and the second radiator 12 share the same feed source 13 and resonate with the floor 19. Fig.11 It can be seen that when the first radiator 11 and the second radiator 12 share the same feed source 13, the average radiation efficiency in the B28 frequency band (703MHz~803MHz) is 1.4dB higher than the radiation efficiency when the first radiator 11 and the floor 19 resonate, the average radiation efficiency in the B28 frequency band is 1.7dB higher than the radiation efficiency when the second radiator 12 and the floor 19 resonate, the average system efficiency in the B28 frequency band is 2.2dB higher than the system efficiency when the first radiator 11 and the floor 19 resonate, and the average system efficiency in the B28 frequency band is 2.2dB higher than the system efficiency when the second radiator 12 and the floor 19 resonate. It can be seen that the resonance mode of the embodiment of the present application, that is, the first resonant current I 12 and the second resonant current I 34 When the component of the combined current along the first side 211 is greater than the component along the second side 212 , the radiation efficiency and the system efficiency of the electronic device 100 are improved.

[0070] refer to Fig.12 and Fig.13 , Fig.12 is a schematic diagram of the electronic device 100 according to an embodiment of the present application when held in the left hand of a user, Fig.13 This is a schematic diagram of the electronic device 100 of an embodiment of the present application when held in the right hand of a user. In actual applications, when the user holds the electronic device 100, the distance between the user's hand and the electronic device 100 (for example, the second radiator 12) is very small, or the user's hand directly contacts the electronic device 100 (for example, contacts the second radiator 12). At this time, the electric field generated by the resonance of the electronic device 100 can stimulate the hand to radiate effectively. At this time, the radiated electric field in the free space is jointly generated by the electronic device 100 and the user's hand, so that the strength of the wireless signal radiated by the electronic device 100 can be enhanced, the radiation efficiency of the wireless signal can be improved, and the wireless communication performance of the electronic device can be improved.

[0071] refer to Fig.14 and Fig.15 , Fig.14 This is a schematic diagram of the system efficiency of the first radiator 11 of the electronic device according to the embodiment of the present application working in the B8 frequency band. Fig.15 Schematic diagram of system efficiency of the electronic device 100 according to an embodiment of the present application operating in the B8 frequency band.

[0072] Among them, L51 is the system efficiency when the first radiator 11 and the floor 19 resonate in the B8 frequency band (frequency range 880MHz~960MHz) in free space; L52 is the system efficiency when the first radiator 11 and the floor 19 resonate in the B8 frequency band when the user holds the electronic device in the left hand; L53 is the system efficiency when the first radiator 11 and the floor 19 resonate in the B8 frequency band when the user holds the electronic device in the right hand. L61 is the system efficiency when the first radiator 11 and the second radiator 12 share the same feed source 13 and resonate with the floor 19 in the B8 frequency band in free space; L62 is the system efficiency when the user holds the electronic device in the left hand, the first radiator 11 and the second radiator 12 share the same feed source 13 and resonate with the floor 19 in the B8 frequency band; L63 is the system efficiency when the user holds the electronic device in the right hand, the first radiator 11 and the second radiator 12 share the same feed source 13 and resonate with the floor 19 in the B8 frequency band.

[0073] Depend on Fig.14 and Fig.15 From the comparison, it can be seen that in the B8 frequency band, the radiation performance of the first radiator 11 is basically unchanged when the user holds it in the left hand or the right hand; when the first radiator 11 and the second radiator 12 share the same feed source 13, the radiation performance is basically unchanged when the user holds it in the right hand, and the radiation performance is improved by about 1.5dB when the user holds it in the left hand. It can be seen that when the user holds the electronic device in the left hand, the wireless signal radiation efficiency of the electronic device can be improved through the enhancement of the user's hand.

[0074] refer to Fig.16 and Fig.17 , Fig.16 This is a schematic diagram of the system efficiency of the first radiator 11 of the electronic device according to the embodiment of the present application working in the B28 frequency band. Fig.17 Schematic diagram of system efficiency of the electronic device 100 according to an embodiment of the present application operating in the B28 frequency band.

[0075] Among them, L71 is the system efficiency when the first radiator 11 and the floor 19 resonate in the B28 frequency band (frequency range 703MHz~803MHz) in free space; L72 is the system efficiency when the first radiator 11 and the floor 19 resonate in the B28 frequency band when the user holds the electronic device in the left hand; L73 is the system efficiency when the first radiator 11 and the floor 19 resonate in the B28 frequency band when the user holds the electronic device in the right hand. L81 is the system efficiency when the first radiator 11 and the second radiator 12 share the same feed source 13 and resonate with the floor 19 in the B28 frequency band in free space; L82 is the system efficiency when the user holds the electronic device in the left hand, the first radiator 11 and the second radiator 12 share the same feed source 13 and resonate with the floor 19 in the B28 frequency band; L83 is the system efficiency when the user holds the electronic device in the right hand, the first radiator 11 and the second radiator 12 share the same feed source 13 and resonate with the floor 19 in the B28 frequency band.

[0076] Depend on Fig.16 and Fig.17 From the comparison, it can be seen that in the B28 frequency band, the system efficiency of the first radiator 11 is about -8.1dB when it is in free space, about -11.3dB when it is held in the user's left hand, and about -12.3dB when it is held in the user's right hand. Therefore, the reduction is 3.2dB when it is held in the user's left hand, and 4.2dB when it is held in the user's right hand; when the first radiator 11 and the second radiator 12 share the same feed source 13, the system efficiency is about -5.7dB in free space, about -8dB when it is held in the user's left hand, and about -8.3dB when it is held in the user's right hand. Therefore, the reduction is 2.3dB when it is held in the user's left hand, and 2.6dB when it is held in the user's right hand. Therefore, compared with the above-mentioned reduction of 3.2dB and 4.2dB, the reduction is significantly reduced, that is, the wireless signal radiation efficiency of the electronic device has been significantly improved.

[0077] It can be seen that when the first radiator 11 and the second radiator 12 share the same feed source 13 and resonate with the floor 19, compared with the resonance of the first radiator 11 and the floor 19, the system efficiency is significantly improved regardless of whether it is in free space or when the user holds it in the left hand or the right hand. Therefore, the radiation performance of the electronic device 100 in the embodiment of the present application has obvious advantages.

[0078] In the description of this application, it should be understood that terms such as "first" and "second" are only used to distinguish similar objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0079] It should be noted that in the embodiments of the present application, "electrical connection" can be achieved by direct connection between two electrical components to achieve electrical connection, or it can be achieved by indirect connection to achieve electrical connection. For example, A and B are electrically connected, which can be achieved by direct connection between A and B, or it can be achieved by indirect connection between A and B through one or more other electrical components.

[0080] The electronic device provided by the embodiment of the present application is described in detail above. The principle and implementation method of the present application are described in detail using specific examples herein, and the description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. An electronic device, characterized in that: include: A floor, the floor comprising a first side and a second side, the first side and the second side are connected and perpendicular to each other, and the length of the first side is greater than the length of the second side; a first radiator, disposed along the first side and electrically connected to the floor; a second radiator, disposed along the first side and electrically connected to the floor; A feed source, electrically connected to the first radiator and the second radiator, the feed source being used to feed a first excitation signal to the first radiator and a second excitation signal to the second radiator; The first excitation signal is used to excite the first radiator and the floor to jointly generate a first resonance, and the first resonance generates a first resonant current on the floor; The second excitation signal is used to excite the second radiator and the floor to jointly generate a second resonance, the second resonance generates a second resonance current on the floor, and the frequency band of the second resonance is the same as the frequency band of the first resonance; The first resonant current and the second resonant current form a resultant current on the floor, and the first excitation signal and the second excitation signal have a phase difference so that a component of the resultant current along the first side is greater than a component along the second side.

2. The electronic device according to claim 1, characterized in that: The first resonant current includes a first current and a second current, the first current is parallel to the first side, and the second current is parallel to the second side; The second resonant current includes a third current and a fourth current, the third current is parallel to the first side, and the fourth current is parallel to the second side; The direction of the first current is the same as that of the third current, so that the first current and the third current are superimposed on each other; the direction of the second current is opposite to that of the fourth current, so that the second current and the fourth current at least partially offset each other.

3. The electronic device according to claim 2, characterized in that: The magnitude of the second current is the same as the magnitude of the fourth current, so that the second current and the fourth current cancel each other out, and the resultant current is parallel to the first side.

4. The electronic device according to any one of claims 1 to 3, characterized in that: Also includes: a first transmission line, one end of the first transmission line being electrically connected to the first radiator; a second transmission line, one end of the second transmission line being electrically connected to the second radiator; a third transmission line, one end of the third transmission line being electrically connected to the other end of the first transmission line and the other end of the second transmission line, and the other end of the third transmission line being electrically connected to the feed source; The feed source is used to feed the first excitation signal to the first radiator through the third transmission line and the first transmission line, and is used to feed the second excitation signal to the second radiator through the third transmission line and the second transmission line.

5. The electronic device according to claim 4, characterized in that: The length of the first transmission line is different from the length of the second transmission line, so that the first excitation signal and the second excitation signal have a phase difference.

6. The electronic device according to claim 4, characterized in that: Also includes: A phase shifter, wherein the phase shifter is arranged on the first transmission line or the second transmission line, and the phase shifter is used to adjust the phase of the signal flowing through so that the first excitation signal and the second excitation signal have a phase difference.

7. The electronic device according to claim 4, characterized in that: Also includes: A matching network is provided between the third transmission line and the feed source, and is used for impedance matching of the first radiator and the second radiator.

8. The electronic device according to any one of claims 1 to 3, characterized in that: The first radiator and the second radiator are both arranged parallel to the first side.

9. The electronic device according to claim 8, characterized in that: The first radiator forms a first IFA antenna, and the first IFA antenna has a first open end; The second radiator forms a second IFA antenna, and the second IFA antenna has a second open end; The first opening end is opposite to the second opening end, and there is a gap between the first opening end and the second opening end.

10. The electronic device according to any one of claims 1 to 3, characterized in that: Also includes: The metal middle frame includes a main body and a metal frame surrounding the periphery of the main body, and the main body forms the floor.

11. The electronic device according to claim 10, characterized in that: The metal frame includes a first metal branch and a second metal branch, and a gap is formed between the first metal branch and the second metal branch; The first metal branch forms the first radiator, and the second metal branch forms the second radiator.

12. The electronic device according to claim 11, characterized in that: The metal frame includes a third side and a fourth side, and the third side and the fourth side are connected to form a corner; The first radiator is located at the third side and close to the fourth side, the first radiator includes a first return point, and the first return point is close to the corner; The second radiator is located at the third side and away from the fourth side. The second radiator includes a second return point. The second return point is located at an end of the second radiator away from the first radiator.

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