Electronic device

Abstract

The invention provides an electronic device. A floor of the electronic device comprises a first edge and a second edge which are connected in a bent mode. The first radiating body, the second radiating body and the floor are arranged at intervals, and orthographic projections of a first feeding point of the first radiating body and a second feeding point of the second radiating body on the floor are located in a current weak point area of characteristic current of the floor; the first feed source is electrically connected to the first feed point and the second feed point, the phase difference of excitation signals fed into the first feed point and the second feed point by the first feed source is 180 degrees, and the first radiator and the second radiator jointly excite the floor to generate excitation current flowing in the extension direction of the first edge under the action of the first feed source. And the wireless signal of the target frequency band is supported. Therefore, the first radiating body and the second radiating body are mainly used as feed structures and do not have harsh electrical length limitation, and the two radiating bodies can realize miniaturization design and enable the first antenna to have a relatively wide bandwidth.

Description

Technical Field

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

[0002] With the development of communication technology, electronic devices such as smartphones can realize more and more functions, and the communication modes of electronic devices are also more diversified. Each communication mode requires a corresponding antenna to support it. The performance of the antenna will directly determine the communication quality and the user experience.

[0003] However, due to the limitation of miniaturization design of electronic devices, electronic devices are becoming smaller and thinner, and the internal space of electronic devices is also getting smaller and smaller. How to reasonably set the antenna of the electronic device becomes a problem. Summary of the invention

[0004] The present application provides an electronic device, which can realize the miniaturization design of the electronic device antenna.

[0005] The present application provides an electronic device, the electronic device comprising an antenna assembly, the antenna assembly comprising:

[0006] A floor, comprising a first side and a second side connected by a bend, wherein the length of the first side is greater than the length of the second side;

[0007] A first radiator is spaced apart from the floor, the first radiator has a first open end, a second open end and a first feeding point, and the orthographic projection of the first feeding point on the floor is located at a current weak point area of ​​the characteristic current of the floor;

[0008] A second radiator is spaced apart from the floor, the second radiator has a third open end, a fourth open end and a second feeding point, and an orthographic projection of the second feeding point on the floor is located at a current weak point area of ​​the characteristic current of the floor; and

[0009] A first feed source is electrically connected to the first feeding point and the second feeding point, respectively. The phase difference of the excitation signal fed by the first feed source to the first feeding point and the second feeding point is 180 degrees. Under the action of the first feed source, the first radiator and the second radiator jointly excite the floor to generate an excitation current flowing along the extension direction of the first edge to support wireless signals in the target frequency band.

[0010] In the electronic device of the present application, the first feeding point of the first radiator and the second feeding point of the second radiator are arranged in the current weak point area of ​​the characteristic current of the floor. The first radiator, the second radiator and the first feed source can be used together as a feeding structure and stimulate the floor to support the transmission and reception of wireless signals in the target frequency band. The first radiator, the second radiator, the first feed source and the floor can form a first antenna together. On the one hand, the first radiator and the second radiator are mainly used as feeding structures so that the first radiator and the second radiator do not have strict electrical size requirements. The length of the first radiator and the second radiator can be shorter and the space occupied is smaller. The first radiator and the second radiator can be miniaturized, and the space utilization rate of the electronic device is higher. On the other hand, the phase difference of the excitation signal fed into the first radiator and the second radiator by the first feed source is 180 degrees. The first radiator and the second radiator can be in a conjugate state. At this time, the first antenna does not need to set a switching circuit (or a switching switch) to cover a wider bandwidth. The first antenna of the present application can save the cost of a switching switch. The first antenna can cover a wider frequency band and the production cost of the first antenna is also low. Moreover, the first antenna in a conjugate state also has a certain power division effect, which can disperse the current distribution of each frequency band, thereby reducing the SAR value of the first antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] 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.

[0012] Figure 1 A first structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0013] Figure 2 A schematic diagram of the current of the floor of an electronic device at different sizes provided in an embodiment of the present application.

[0014] Figure 3 for Figure 1 A schematic diagram of current distribution on the floor shown.

[0015] Figure 4 for Figure 1 Another schematic diagram of current distribution in the floor is shown.

[0016] Figure 5 for Figure 3 Schematic diagram of the distribution of current weak point areas on the floor shown.

[0017] Figure 6 for Figure 4Schematic diagram of the distribution of current weak point areas of the floor shown.

[0018] Figure 7 A schematic diagram of the distribution of a current weak point area on the floor of an electronic device provided in an embodiment of the present application.

[0019] Figure 8 This is a schematic diagram of a first layout of the first radiator and the second radiator in an embodiment of the present application.

[0020] Fig. 9 This is a schematic diagram of a second layout of the first radiator and the second radiator in an embodiment of the present application.

[0021] Fig.10 for Figure 8 A Smith circle schematic of the electronic device shown.

[0022] Fig.11 for Figure 8 Schematic diagram of S-parameter curve of the electronic device shown.

[0023] Fig.12 for Figure 8 Schematic diagram of S-parameters and efficiency curves of the electronic device shown.

[0024] Fig.13 A schematic diagram of an S parameter curve when the first feed source independently excites the first radiator to support medium and high frequency signals in different frequency bands.

[0025] Fig.14 for Figure 8 The diagram is a schematic diagram of an S parameter curve when the first antenna supports medium and high frequency signals of different frequency bands.

[0026] Fig.15 for Figure 8 The diagram is a schematic diagram of antenna efficiency curve when the first antenna supports medium and high frequency signals of different frequency bands.

[0027] Fig.16 A second structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0028] Fig.17 A third structural schematic diagram of the electronic device provided in an embodiment of the present application.

[0029] Fig.18 for Fig.16 An electrical connection diagram of the electronic device shown.

[0030] Fig.19 for Fig.17 An electrical connection diagram of the electronic device shown.

[0031] Fig. 20A fourth structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0032] Fig.21 for Fig. 20 An electrical connection diagram of the electronic device shown.

[0033] Fig. 22 for Fig. 20 The S11 parameter curve diagram of the second antenna of the electronic device switching between different frequency bands is shown.

[0034] Fig.23 The antenna scheme of the related technology and the present application Fig. 20 A comparative schematic diagram of the second antenna of the electronic device shown.

[0035] Fig.24 The antenna scheme of the related technology and the present application Fig. 20 The antenna performance comparison diagram of the second antenna of the electronic device shown is shown.

[0036] Fig.25 A fifth structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0037] Fig.26 A sixth structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] The following will be combined with the attached examples of the present application Figure 1 To Attachment Fig.26 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, not 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.

[0039] The embodiment of the present application provides an electronic device 10, and the electronic device 10 may have a wireless communication function. For example, the electronic device 10 may transmit wireless fidelity (Wi-Fi) signals, global positioning system (GPS) signals, third-generation mobile communication technology (3rd-Generation, 3G), fourth-generation mobile communication technology (4th-Generation, 4G), fifth-generation mobile communication technology (5th-Generation, 5G), near field communication (NFC), Bluetooth (BT), ultra-wideband (UWB), etc.

[0040] Please refer to Figure 1 , Figure 1 The first structural diagram of the electronic device 10 provided in the embodiment of the present application is as follows. The electronic device 10 includes an antenna assembly 100 , and the antenna assembly 100 includes a first radiator 110 , a second radiator 120 , a first feed source 130 , and a floor 140 .

[0041] The floor 140 includes a first side 141 and a second side 142 connected by bending, the first side 141 extends along a first direction H1, and the second side 142 extends along a second direction H2, wherein the length of the first side 141 is greater than the length of the second side 142. The first radiator 110 is spaced apart from the floor 140, and the first radiator 110 has a first open end 111, a second open end 112, and a first feeding point 113; the orthographic projection of the first feeding point 113 on the floor 140 is located in a current weak area of ​​the characteristic current of the floor 140. The second radiator 120 is spaced apart from the floor 140, and the second radiator 120 has a third open end 121, a fourth open end 122, and a second feeding point 123; the orthographic projection of the second feeding point 123 on the floor 140 is located in a current weak area of ​​the characteristic current of the floor 140. The first feed source 130 is electrically connected to the first feed point 113 and the second feed point 123, respectively. The phase difference of the excitation signal fed by the first feed source 130 to the first feed point 113 and the second feed point 123 is 180 degrees. The first radiator 110 and the second radiator 120 jointly excite the floor 140 under the action of the first feed source 130 to generate an excitation current flowing along the extension direction of the first side 141 (i.e., the first direction H1) to support the wireless signal of the target frequency band. The target frequency band can be, but is not limited to, a low frequency, a medium frequency, a high frequency, a wireless fidelity (WiFi) frequency band, a global positioning system (GPS) frequency band, etc.

[0042] It is understandable that the first radiator 110 and the second radiator 120 are conductors that can support wireless signal transmission and reception, such as but not limited to the first radiator 110 and the second radiator 120 being a laser direct structuring (LDS) radiating structure, a flexible printed circuit (FPC) radiating structure, a print direct structuring (PDS) radiating structure, or a metal branch radiating structure. When the antenna assembly 100 is applied to the electronic device 10, the first radiator 110 and the second radiator 120 can also be a mechanical design antenna (MDA) radiating structure designed using the metal of the electronic device 10 itself. Among them, the first open end 111 and the second open end 112 of the first radiator 110 are not directly electrically connected to the floor 140, and the third open end 121 and the fourth open end 122 of the second radiator 120 are also not directly electrically connected to the floor 140, so that the first radiator 110 and the second radiator 120 can be suspended relative to the floor 140, and the first radiator 110 and the second radiator 120 can achieve physical electrical connection with the floor 140 without a conductor structure.

[0043] It can be understood that the first feed 130 can be used as a signal source. The first feed 130 and the first radiator 110 and the second radiator 120 can work together as a Booster (excitation source or booster) to excite the floor 140 to support the transmission and reception of wireless signals in the target frequency band. The first feed 130, the first radiator 110, the second radiator 120 and the floor 140 can form a first antenna together. In this process, the floor 140 radiates signals as the main radiating device, the first radiator 110 and the second radiator 120 serve as auxiliary radiating devices of the floor 140, and the first radiator 110 and the second radiator 120 mainly serve as excitation devices. Under the action of the first feed 130, the first radiator 110 and the second radiator 120 can excite the floor 140 to support wireless signals in a target frequency band with a wider frequency band.

[0044] It can be understood that the floor 140 can form a common ground of the electronic device 10, the floor 140 can be a plane or structure with zero electric potential, and the floor 140 can be formed by a conductor, a printed circuit or a metal printed layer in the electronic device 10; or, the floor 140 can be formed on the main board, a small board or other supporting board of the electronic device 10; or, the floor 140 can also be formed on the frame of the electronic device 10 (such as the middle board 320 described later). Wherein, the floor 140 can form at least one current weak point area under the action of the characteristic current, and the orthographic projection of the first feeding point 113 on the floor 140 can be located in a current weak point area, and the orthographic projection of the second feeding point 123 on the floor 140 can also be located in a current weak point area. Wherein, the orthographic projections of the first feeding point 113 and the second feeding point 123 on the floor 140 can be located in the same current weak point area or in different current weak points.

[0045] It is understandable that in an electronic device 10 with a large floor such as a mobile phone, the current on the floor 140 can contribute to most of the radiation of the antenna of the entire electronic device 10. Under the excitation of a suitable feeding structure, the floor 140 can act as a radiator to radiate wireless signals. For example, the floor 140 can be regarded as an antenna element with a certain width, and the floor 140 can be used as a dipole antenna with a biased feed point, such as Figure 2 As shown, Figure 2 A schematic diagram of the current flow of the floor 140 of the electronic device 10 provided in the embodiment of the present application at different sizes, Figure 2 In the four figures from left to right, the length direction (for example, the first direction H1) of the floor 140 remains unchanged, and the width direction (for example, the second direction H2) gradually increases. Figure 2 It can be seen that when the longitudinal current of the floor 140 (the current along the first direction H1) is fully excited, the equivalent aperture of the antenna formed by the floor 140 and the feeding structure can be increased. The floor 140 acts as a more effective radiator, and the current effect on the floor 140 is more significant, which can improve the antenna efficiency.

[0046] When the shape and size of the floor 140 are certain, according to the characteristic mode theory, by analyzing the characteristic mode of the floor 140 and according to the boundary conditions, the appropriate feeding method and feeding position of the floor 140 can be found, and the characteristic current can be excited on the floor 140. The so-called characteristic mode theory is based on the method of moments. The characteristic mode theory defines a series of mutually orthogonal characteristic modes for conductors of arbitrary shapes. These mutually orthogonal characteristic modes are inherent properties of conductors, which have convergence and completeness. They can accurately represent the solutions to electromagnetic problems. The characteristic mode theory can clearly give the working mechanism of the electromagnetic structure. At the same time, the characteristic mode is only related to the shape, size and working frequency of the electromagnetic structure, and has nothing to do with the position of the feed source. For example, please refer to Figure 3 and Figure 4 , Figure 3 for Figure 1 A schematic diagram of current distribution of the floor 140 shown in FIG. Figure 4 for Figure 1 Another current distribution diagram of the floor 140 shown is shown. When the floor 140 is a rectangular structure, the floor 140 may include two first sides 141a, 141b and two second sides 142a, 142b. The two first sides 141a, 141b may be arranged opposite to each other or opposite to each other. The two second sides 142a, 142b may also be arranged opposite to each other or opposite to each other. The two first sides 141a, 141b may be the long sides of the floor 140, and the two second sides 142a, 142b may be the short sides of the floor 140. By performing characteristic mode analysis on the floor 140, the floor 140 may form at least one current weak point area (also known as current zero point area) under the action of the characteristic current I0. The so-called current weak point area refers to the area where the current intensity of the characteristic current on the floor 140 is the weakest. Since the characteristic current is a periodic excitation current, the characteristic current may form one or more current weak point areas on the floor 140. On the current simulation diagram, the area with the lightest current distribution color and the smallest current density is the current weak point area. Considering that the phase difference between the electric field and the current distribution is 90 degrees, the minimum value of the electric field distribution is the same as the maximum value of the current distribution, and the maximum value of the electric field distribution is the same as the minimum value of the current distribution.

[0047] like Figure 3 As shown, when the characteristic current I0 stimulates the floor 140 to support low-frequency wireless signals, the characteristic current I0 in the area near the two first sides 141a and 141b of the floor 140 can flow along the extension direction of the first sides 141a and 141b and toward the second side 142a (that is, flow downward along the first direction H1), so that the characteristic current I0 near the two first sides 141a and 141b flows in the same direction, and the radiation fields generated by the characteristic current I0 near the two first sides 141a and 141b can be superimposed on each other; The characteristic current I0 in the area near the second side 142a of the floor 140 can flow from the two ends of the second side 142a to the middle area of ​​the second side 142a, and the characteristic current I0 in the area near the second side 142b of the floor 140 can flow from the middle of the second side 142b to the two ends of the second side 142b, so that the flow directions of the characteristic current I0 near the two second sides 142a and 142b are opposite, and the radiation fields generated by the characteristic current I0 near the two second sides 142a and 142b can offset each other. At this time, under the action of the characteristic current, the floor 140 can obtain a characteristic current distribution in which the longitudinal current mode (the current mode along the first direction H1) accounts for the largest proportion.

[0048] like Figure 4As shown, when the characteristic current I0 excites the floor 140 to support medium and high frequency wireless signals, the characteristic current I0 can form a current weak area in the middle of the first sides 141a and 141b of the floor 140, and the characteristic current I0 can flow from the current weak area toward the direction of the second sides 142a and 142b, respectively. The characteristic current I0 flows in the same direction in the two first sides 141a and 141b, and the radiation field generated by the characteristic current I0 near the two first sides 141a and 141b can be superimposed on each other. The characteristic current I0 in the area near the second sides 142a and 142b of the floor 140 can flow from the two ends of the second sides 142a and 142b toward the middle area. At this time, under the action of the characteristic current, the floor 140 can obtain a characteristic current distribution in which the longitudinal current mode (the current mode along the first direction H1) accounts for a large proportion.

[0049] Understandably, in order to motivate Figure 3 , Figure 4 The longitudinal current mode (the current mode along the first direction H1) shown in the figure accounts for a relatively large characteristic current distribution, and the feeding structure of the floor 140 can be set in the current weak point area of ​​the characteristic current I0. For example, the capacitive coupling element (CCE) can be placed at the minimum distribution of the characteristic current I0 (i.e., a current weak point area), that is, the capacitive coupling element CCE is placed at the maximum electric field distribution of the characteristic current I0.

[0050] For example, Figure 5 As shown, Figure 5 for Figure 3 The schematic diagram of the distribution of the current weak point areas on the floor 140 is shown. Under the action of the characteristic current I0, when the floor 140 supports low-frequency wireless signals, four current weak point areas such as the first current weak point area A1, the second current weak point area A2, the third current weak point area A3 and the fourth current weak point area A4 may be formed on the floor 140. Among them, the four current zero point areas may be respectively located near the four inflection points of the rectangular structure of the floor 140.

[0051] For example, Figure 6 As shown, Figure 6 for Figure 4The schematic diagram of the current weak area distribution of the floor 140 is shown. Under the action of the characteristic current I0, when the floor 140 supports medium and high frequency wireless signals, six current weak areas such as the fifth current weak area A5, the sixth current weak area A6, the seventh current weak area A7, the eighth current weak area A8, the ninth current weak area A9, and the tenth current weak area A10 may be formed on the floor 140. Four of the current weak areas may be located near the four inflection points of the rectangular structure of the floor 140, and the other two current weak areas may be located near the midpoints of the two long sides of the floor 140.

[0052] Understandably, please refer to Figure 7 , Figure 7 A schematic diagram of the distribution of a current weak point area on the floor 140 of the electronic device 10 provided in an embodiment of the present application, a current weak point area may be located in an area with the intersection of the first side 141 and the second side 142 of the floor 140 as the center and 1 / 16 of the wavelength of the target frequency band as the radius; or, a current weak point area may be located in an area with the intersection of the extension line of the first side 141 and the extension line of the second side 142 of the floor 140 as the center and 1 / 16 of the wavelength of the target frequency band as the radius. The orthographic projection of the first feeding point 113 or the second feeding point 123 on the floor 140 may be located in the intersection area, at this time, the first radiator 110 and the second radiator 120 under the action of the first feed source 130 can stimulate the floor 140 to form the characteristic current distribution in which the longitudinal current mode accounts for a large proportion, and stimulate the floor 140 to support the transmission and reception of wireless signals in the target frequency band.

[0053] It is understandable that the CCE feeding structure can be set at the four corners of the mainboard (i.e., the areas near the four current weak points, Figure 6 The two current weak point areas in the middle of the first side 141 of the middle floor 140 are not easy to layout the feeding wiring), at this time, the floor 140 can be used as the main radiator of the wireless signal in the target frequency band, contributing most of the radiation of the first antenna of the entire electronic device 10; and the first radiator 110 and the second radiator 120 mainly act as the radiation driving device of the entire first antenna, becoming the excitation structure of the floor 140 working within the working frequency band, and the radiation energy of the first radiator 110 and the second radiator 120 accounts for a very small proportion.

[0054] Exemplarily, when the number of current weak point areas on the floor 140 is at least four, as shown in FIG. Figure 8 As shown, Figure 8This is a schematic diagram of a first layout of the first radiator 110 and the second radiator 120 of an embodiment of the present application. The orthographic projection of the first feeding point 113 on the floor 140 is located in one of the four current weak areas (e.g., the first current weak area A1), and the orthographic projection of the second feeding point 123 on the floor 140 is located in another of the four current weak areas (e.g., the second current weak area A2). The first radiator 110 is adjacent to the current weak area where the first feeding point 113 is set, and the second radiator 120 is adjacent to the current weak area where the second feeding point 123 is set.

[0055] Of course, if Fig. 9 As shown, Fig. 9 This is a schematic diagram of a second layout of the first radiator 110 and the second radiator 120 of an embodiment of the present application, wherein the orthographic projection of the first feeding point 113 on the floor 140 and the orthographic projection of the second feeding point 123 on the floor 140 are both located in the same one of the four current weak point areas (for example, the first current weak point area A1); the first radiator 110 and the second radiator 120 are adjacent to the current weak point area where the first feeding point 113 / the second feeding point 123 are set, and the first radiator 110 and the second radiator 120 are adjacent to different sides of the floor 120.

[0056] It can be understood that the first radiator 110 and the second radiator 120 of the embodiment of the present application are mainly used as feeding structures, so that the first radiator 110 and the second radiator 120 of the present application can be, but not limited to, a straight bar shape, an L shape, an arc shape or other irregular shapes, and the embodiment of the present application does not limit the shapes of the first radiator 110 and the second radiator 120. Among them, the length of the extension path between the two open ends of the first radiator 110 can be the length of the first radiator 110, and the length of the extension path between the two open ends of the second radiator 120 can be the length of the second radiator 120.

[0057] Considering the need for miniaturization of the electronic device 10, the electrical length of the first radiator 110 and the second radiator 120 can be less than or equal to one eighth of the wavelength corresponding to the wireless signal of the target frequency band and greater than or equal to one thirty-second of the wavelength corresponding to the wireless signal of the target frequency band. The electrical length of the radiator satisfies the following formula:

[0058]

[0059] Wherein, L is the physical length of the radiator, a is the transmission time of the wireless signal of the target frequency band in the radiator, and b is the transmission time of the wireless signal of the target frequency band in free space.

[0060] It should be noted that the lengths of the first radiator 110 and the second radiator 120 may also be other sizes, which are not limited in the embodiments of the present application. The first radiator 110 and the second radiator 120 may extend along the length direction of the floor 140, or along the width direction of the floor 140, or along both the length direction and the width direction of the floor 140, and the present application does not limit the extension direction of the first radiator 110 and the second radiator 120.

[0061] It can be understood that when the phase difference of the excitation signal fed by the first feed source 130 to the first radiator 110 and the second radiator 120 is 180 degrees, the first radiator 110 and the second radiator 120 can be in a conjugate state. At this time, the first resonant current component (i.e., the transverse current component) flowing along the width direction (second direction H2) of the floor 140 in the resonant current formed by the first feed source 130 and the first radiator 110 exciting the floor 140 is opposite to the flow direction of the second resonant current component flowing along the width direction of the floor 140 in the resonant current formed by the first feed source 130 and the second radiator 120 exciting the floor 140. This makes it possible for the first resonant current component and the second resonant current component to cancel each other when the first feed source 130, the first radiator 110 and the second radiator 120 jointly excite the floor 140 to support the first wireless signal, so that the longitudinal resonant current can be excited to a greater extent on the floor 140, so that the floor 140 can support wireless signals of a target frequency band with a wider frequency band.

[0062] Understandably, please refer to Figures 10 to 12 , Fig.10 for Figure 8 A Smith circle diagram of the electronic device 10 shown, Fig.11 for Figure 8 The S parameter curve diagram of the electronic device 10 is shown in FIG. Fig.12 for Figure 8 The S parameter and efficiency curve diagram of the electronic device 10 is shown in FIG. Fig.10 It can be seen that the first radiator 110 and the second radiator 120 of the first antenna of the electronic device 10 are in a conjugate state, and the Smith chart curves L0 of the first radiator 110 and the second radiator 120 of the first antenna can be distributed in the second quadrant and the fourth quadrant. Fig.11 It can be seen that Fig.11The middle curve L1 is the S parameter of the first radiator 110 when the first feed source 130 excites the first radiator 110 alone, the curve L2 is the S parameter of the second radiator 120 when the first feed source 130 excites the first radiator 110 and the second radiator 120 at the same time, and the first radiator 110 and the second radiator 120 of the first antenna of the present application are in a conjugate state, which is equivalent to combining the S parameter of the first radiator 110 when fed alone and the S parameter of the second radiator 120 when fed alone to form a broadband resonance. Fig.12 It can be seen that Fig.12 The middle curves L4 and L5 are the S parameter curve and efficiency curve of the first antenna respectively. Fig.12 It can be seen that when the target frequency band supported by the first antenna is a low-frequency signal, the first antenna of the present application can cover a bandwidth of 700MHz to 960MHz, so that there is no need to switch through a switching circuit. The first antenna can also cover a wider bandwidth, and the first antenna can be an ultra-wideband miniaturized antenna structure.

[0063] Also, when the target frequency band supported by the first antenna is a high-frequency signal, please refer to Figures 13 to 15 , Fig.13 It is a schematic diagram of an S parameter curve when the first feed source 130 alone excites the first radiator 110 to support medium and high frequency signals of different frequency bands. Fig.14 for Figure 8 The schematic diagram of the S parameter curve when the first antenna supports medium and high frequency signals of different frequency bands is shown. Fig.15 for Figure 8 The diagram is a schematic diagram of antenna efficiency curve when the first antenna supports medium and high frequency signals of different frequency bands. Fig.13 The middle curves L6 to L8 are respectively S parameters when the first feed source 130 alone excites the first radiator 110 to support 1.8G, 2.3G and 2.6G wireless signals. Fig.14 The middle curve L9 is the S parameter when the floor 140 supports a certain frequency band f1 when the first feed source 130 alone excites the first radiator 110, the curve L10 is the S parameter when the floor 140 supports a certain frequency band f2 when the first feed source 130 alone excites the second radiator 120, the curve L11 is the S parameter curve when the first antenna is not provided with multiple matching circuits (such as the first matching circuit 155 to the third matching circuit 157 described later), and the curve L12 is the S parameter curve after the first antenna is provided with multiple matching circuits. Fig.15Curves L13 to L15 are the antenna efficiencies when the first antenna supports 1.8G, 2.3G, and 2.6G, respectively. It can be seen from curves L8 to L15 that the S parameters of the first antenna can cover the sum of the S parameters of the wireless signals supported by the floor 140 when the first feed source 130 excites the first radiator 110 and the second radiator 120 alone. In addition, the antenna efficiency curve of the first antenna can also cover the sum of the efficiencies of the wireless signals supported by the floor 140 when the first feed source 130 excites the first radiator 110 and the second radiator 120 alone, and the efficiency of expanding the bandwidth can be achieved. At the same time, the resonant current generated by the first antenna is distributed on the first radiator 110 and the second radiator 120. The architecture of the first antenna can disperse the current, so that the SAR value of the first antenna is also reduced. The SAR value of the first antenna of the present application is compared with the SAR value of the solution in which the floor 140 supports medium and high frequency signals of different frequency bands when the first feed source 130 alone excites the first radiator 110 or the second radiator 120. The SAR value of the first antenna of the present application can be reduced by 20% to 55%. The lower SAR value of the present application can increase the antenna efficiency by 1dB to 3.5dB.

[0064] In the electronic device 10 of the embodiment of the present application, the orthographic projections of the first feeding point 113 of the first radiator 110 and the second feeding point 123 of the second radiator 120 on the floor 140 are located in a current weak point area of ​​the characteristic current of the floor 140. The first radiator 110 and the second radiator 120 can be arranged adjacent to the current weak point area of ​​the floor 140. The first radiator 110, the second radiator 120 and the first feed source 130 can jointly serve as a feeding structure and stimulate the floor 140 to support the transmission and reception of wireless signals in the target frequency band. The first radiator 110, the second radiator 120, the first feed source 130 and the floor 140 can jointly form a first antenna. Since the first radiator 110 and the second radiator 120 are mainly used as feeding structures, the first radiator 110 and the second radiator 120 do not have strict electrical size requirements, so the length of the first radiator 110 and the second radiator 120 can be shorter, the space occupied by the first radiator 110 and the second radiator 120 is smaller, and a miniaturized design can be realized, and the space utilization rate of the electronic device 10 is higher. At the same time, the phase difference of the excitation signal fed into the first radiator 110 and the second radiator 120 by the first feed source 130 is 180 degrees. The first antenna simultaneously excites the floor 140 to support the wireless signal of the target frequency band of the wider frequency band through the first radiator 110 and the second radiator 120 in the conjugate state. The first antenna does not need to set a switching circuit (or a switching switch) to cover a wider bandwidth. The first antenna of the present application can save the cost of a switching switch, and the production cost of the first antenna is lower. Moreover, the first antenna in a conjugate state also has a certain power division effect, which can disperse the current distribution of each frequency band, thereby reducing the electromagnetic radiation human body specific absorption rate (Specific absorption rate, referred to as SAR) value of the first antenna.

[0065] Among them, please refer to Fig.16 , Fig.16 The second structural diagram of the electronic device 10 provided in the embodiment of the present application. The antenna assembly 100 of the electronic device 10 may further include a transmission line 151. The first antenna may adjust the length of the transmission line 151 so that the first radiator 110 and the second radiator 120 are in a conjugate state.

[0066] The first end of the transmission line 151 may be electrically connected to the first feed source 130, the second end of the transmission line 151 may be electrically connected to the first feeding point 113 of the first radiator 110, and the third end of the transmission line 151 may be electrically connected to the second feeding point 123 of the second radiator 120. The difference between the first length of the transmission line 151 between the first feed source 130 and the first feeding point 113 and the second length of the transmission line 151 between the first feed source 130 and the second feeding point 123 is within a preset range, so that the phase difference when the excitation signal provided by the first feed source 130 is transmitted to the first radiator 110 and the second radiator 120 through the transmission line 151 is 180 degrees.

[0067] It is understandable that the transmission line 151 may be, but is not limited to, a microstrip line, a strip line, or a waveguide structure, etc. This embodiment of the present application does not limit this. When the positions of the first radiator 110 and the second radiator 120 are fixed, the difference between the first length and the second length of the transmission line 151 can be within a preset range. When the first feed source 130 transmits an excitation signal to the first radiator 110 and the second radiator 120 respectively through the transmission line 151, the phase difference of the excitation signal on the first radiator 110 and the second radiator 120 can be 180 degrees. The excitation signal provided by the first feed source 130 can feed the first radiator 110 and the second radiator 120 in an equal-amplitude and reverse manner under the action of the transmission line 151. Under the excitation of the excitation signal, the resonant current excited by the first radiator 110 on the floor 140 along the width direction of the floor 140 and the resonant current excited by the second radiator 120 on the floor 140 along the width direction of the floor 140 flow in the opposite direction and cancel each other more easily. The ratio of the longitudinal current generated by the first radiator 110 and the second radiator 120 on the floor 140 is larger, so that the antenna performance of the co-feed antenna formed by the first radiator 110 and the second radiator 120 is better.

[0068] like Fig.16 As shown, the antenna assembly 100 may further include a first transmission line matching circuit 152 and a second transmission line matching circuit 153. The first transmission line matching circuit 152 may be connected in series between the second end of the transmission line 151 and the first feeding point 113, and the first transmission line matching circuit 152 may adjust the phase of the excitation signal transmitted from the transmission line 151 to the first radiator 110. The second transmission line matching circuit 153 may be connected in series between the third end of the transmission line 151 and the second feeding point 123, and the second transmission line matching circuit 153 may adjust the phase of the excitation signal transmitted from the transmission line 151 to the second radiator 120. The first transmission line matching circuit 152 and the second transmission line matching circuit 153 may include, but are not limited to, components such as capacitors and inductors.

[0069] It can be understood that the present application can design the first length and the second length of the transmission line 151 so that the phase difference of the excitation signal transmitted to the first radiator 110 and the second radiator 120 is 180 degrees. The present application can also design the first length and the second length of the first transmission line 151 in combination with the structure of the first transmission line matching circuit 152 and the second transmission line matching circuit 153, so that under the joint action of the transmission line 151, the first transmission line matching circuit 152 and the second transmission line matching circuit 153, the phase difference of the excitation signal transmitted to the first radiator 110 and the second radiator 120 is 180 degrees.

[0070] The electronic device 10 of the embodiment of the present application can set the length of the transmission line so that the phase difference of the excitation signal provided by the first feed source 130 when it is transmitted to the first radiator 110 and the second radiator 120 is 180 degrees, so that the first radiator 110 and the second radiator 120 can stimulate the longitudinal current on the floor 140 to a greater extent, so that the second antenna can cover the wireless signal of the target frequency band with a wider frequency band.

[0071] Among them, please refer to Fig.17 , Fig.17 This is a third structural diagram of the electronic device 10 provided in an embodiment of the present application. The electronic device 10 may further include a phase shift module 154 .

[0072] The phase shift module 154 may be electrically connected between the first feed source 130 and the first feeding point 113 of the first radiator 110, so that the phase shift module 154 can adjust the phase of the excitation signal fed from the first feed source 130 to the first radiator 110. Alternatively, the phase shift module 154 may be electrically connected between the first feed source 130 and the second feeding point 123 of the second radiator 120, so that the phase shift module 154 can adjust the phase of the excitation signal fed from the first feed source 130 to the second radiator 120. Alternatively, the phase shifting module 154 can be electrically connected between the first feed source 130 and the first feed point 113 and between the first feed source 130 and the second feed point 123 at the same time. For example, the phase shifting module 154 can include two phase shifters, one phase shifter can be electrically connected between the first feed source 130 and the first feed point 113, and the other phase shifter can be electrically connected between the first feed source 130 and the second feed point 123. The phase shifting module 154 can respectively adjust the phase of the excitation signal fed into the first radiator 110 by the first feed source 130 and adjust the phase of the excitation signal fed into the second radiator 120 by the first feed source 130.

[0073] It is understandable that the phase shift module 154 may include a phase shifter, which is a device capable of adjusting the phase of a wave (e.g., current). The phase shift module 154 is provided in the embodiment of the present application, so that the phase difference when the excitation signal provided by the first feed source 130 is transmitted to the first radiator 110 and the second radiator 120 is 180 degrees, and the transverse currents generated on the floor 140 by the first radiator 110 and the second radiator 120 are more likely to cancel each other, and the bandwidth of the second antenna is wider.

[0074] It can be understood that the electronic device 10 can adjust the phase difference when the excitation signal is transmitted to the first radiator 110 and the second radiator 120 by the length of the transmission line 151; the electronic device 10 can also adjust the phase difference when the excitation signal is transmitted to the first radiator 110 and the second radiator 120 by the phase shifting module 154; the electronic device 10 can also adjust the phase difference when the excitation signal is transmitted to the first radiator 110 and the second radiator 120 by the length of the transmission line 151 and the phase shifting module 154 at the same time.

[0075] It is understandable that, affected by the first radiator 110, the second radiator 120 and the transmission line 151, the adjustment amplitude of the phase when the excitation signal is transmitted to the first radiator 110 or the second radiator 120 by the phase shift module 154 is not necessarily 180 degrees. For example, when the phase shift module 154 is not provided, the phase difference when the excitation signal is transmitted to the first radiator 110 or the second radiator 120 is 30 degrees, and the adjustment amplitude of the phase when the excitation signal is transmitted to the first radiator 110 or the second radiator 120 by the phase shift module 154 can be 150 degrees, so that after the adjustment of the phase shifter, the phase difference when the excitation signal is transmitted to the first radiator 110 and the second radiator 120 can be 180 degrees. The embodiment of the present application does not limit the specific phase degree adjusted by the phase shift module 154.

[0076] The electronic device 10 of the embodiment of the present application is provided with a phase shift module 154 so that the phase difference when the excitation signal provided by the first feed source 130 is transmitted to the first radiator 110 and the second radiator 120 is 180 degrees. The first radiator 110 and the second radiator 120 can be in a conjugate state, and the second antenna can have a wider bandwidth when supporting wireless signals in the target frequency band.

[0077] Please refer again to Fig.16 and Fig.17 The electronic device 10 may further include at least one of a first matching circuit 155 , a second matching circuit 156 , and a third matching circuit 157 .

[0078] The first matching circuit 155 is electrically connected to the first feed source 130, and the first matching circuit 155 is used to match and adjust the impedance of the excitation signal provided by the first feed source 130. The second matching circuit 156 is electrically connected between the first feed source 130 and the first feeding point 113 of the first radiator 110, and the second matching circuit 156 is used to match and adjust the impedance of the excitation signal fed into the first radiator 110. The third matching circuit 157 is electrically connected between the first feed source 130 and the second feeding point 123 of the second radiator 120, and the second matching circuit 156 is used to match and adjust the impedance of the excitation signal fed into the second radiator 120.

[0079] It is understandable that the matching circuit is also called the matching network. Fig.16 As shown, when the antenna device adjusts the phase through the transmission line 151, the first matching circuit 155 can be electrically connected between the first feed source 130 and the first end of the transmission line 151, the second matching circuit 156 can be electrically connected between the first transmission line matching circuit 152 and the first feeding point 113, and the third matching circuit 157 can be electrically connected between the second transmission line matching circuit 153 and the second feeding point 123. Fig.17 As shown, when the antenna device adjusts the phase through the phase shift module 154, the first matching circuit 155 can be electrically connected between the first feed source 130 and the phase shift module 154, the second matching circuit 156 can be electrically connected between the phase shift module 154 and the first feeding point 113, and the third matching circuit 157 can be electrically connected between the phase shift module 154 and the second feeding point 123.

[0080] It can be understood that the first matching circuit 155, the second matching circuit 156, and the third matching circuit 157 may include, but are not limited to, components such as capacitors, inductors, and switches.

[0081] For example, see Fig.18 , Fig.18 for Fig.16An electrical connection diagram of the electronic device 10 is shown. When the first feed source 130, the first radiator 110 and the second radiator 120 excite the floor 140 to support medium and high frequency wireless signals, the first matching circuit 155 may include an inductor L11 and a capacitor C11, the second matching circuit 156 may include an inductor L12 and an inductor L13, and the third matching circuit 157 may include an inductor element L14 and an inductor element L15. One end of the inductor L11 is electrically connected to the first feed source 130, one end of the inductor L12 and one end of the inductor L14 are both electrically connected to the other end of the inductor L11, the other end of the inductor L12 is electrically connected to the first feeding point 113, and the other end of the inductor L14 is electrically connected to the second feeding point 123; one end of the capacitor C11 is electrically connected between the inductor L11 and the first feed source 130, and the other end is grounded; one end of the inductor L13 is electrically connected between the inductor L11 and the inductor L12, and the other end is grounded; one end of the inductor L15 is electrically connected between the inductor L11 and the inductor L14, and the other end is grounded.

[0082] For another example, see Fig.19 , Fig.19 for Fig.17 An electrical connection diagram of the electronic device 10 shown. When the first feed source 130, the first radiator 110 and the second radiator 120 excite the floor 140 to support low-frequency wireless signals, the first matching circuit 155 may include an inductor L16, an inductor L17 and a capacitor C12, the second matching circuit 156 includes an inductor L18, an inductor L19 and a capacitor C13, and the third matching circuit 157 includes an inductor L20, an inductor L21 and a capacitor C14. The inductor L16 and the inductor L17 are connected in series with the first feed source 130 (for example, connected in series between the first feed source 130 and the phase shift module 154), and one end of the capacitor C12 is electrically connected to the inductor L16 and the inductor L17, and the other end of the capacitor C12 is grounded. Inductor L18 and inductor L19 are connected in series between the first radiator 110 and the first feed source 130 (for example, connected in series between the phase shift module 154 and the first radiator 110), one end of capacitor C13 is electrically connected to inductor L18 and inductor L19, and the other end of capacitor C13 is grounded. Inductor L20 and inductor L21 are connected in series between the second radiator 120 and the first feed source 130 (for example, connected in series between the phase shift module 154 and the second radiator 120), one end of capacitor C14 is electrically connected to inductor L20 and inductor L21, and the other end of capacitor C14 is grounded. It should be noted that the three matching circuits can also be other structures, and the embodiments of the present application do not limit the specific structures of the three matching networks.

[0083] It is understandable that the electronic device 10 may include one matching network, two matching networks, or three matching networks in the first matching circuit 155 , the second matching circuit 156 , and the third matching circuit 157 , which is not limited in the embodiment of the present application.

[0084] The electronic device 10 of the embodiment of the present application includes multiple matching networks. Under the action of the multiple matching networks, the impedance matching performance of the excitation signal provided by the first feed source 130 is better, and the antenna performance of the electronic device 10 supporting wireless signals is better.

[0085] Among them, please refer to Fig. 20 , Fig. 20 This is a fourth structural diagram of the electronic device 10 provided in an embodiment of the present application. The electronic device 10 may further include a third radiator 160 and a second feed source 170 .

[0086] The third radiator 160 is spaced apart from the floor 140, and has a fifth open end 161, a sixth open end 162, and a third feeding point 163. The orthographic projection of the third feeding point 163 on the floor 140 is located in another current weak point region of the characteristic current of the floor 140. The second feed source 170 is electrically connected to the third feeding point 163. Under the action of the second feed source 170, the third radiator 160 excites the floor 140 to generate an excitation current flowing along the extension direction of the first side 141, so as to support the transmission and reception of wireless signals of some sub-bands in the target frequency band.

[0087] It can be understood that the fifth open end 161 and the sixth open end 162 are not connected to the floor 140 so that both open ends are not grounded, and the third radiator 160 can be suspended relative to the floor 140. The third feeding point 163 is arranged between the fifth open end 161 and the sixth open end 162, and the second feed source 170 and the third radiator 160 can jointly act as a Booster (excitation source or booster) to excite the floor 140 to support the transmission and reception of wireless signals in the target frequency band, and the second feed source 170, the third radiator 160 and the floor 140 can jointly form a second antenna. In this process, the floor 140 radiates signals as the main radiating device, and the third radiator 160 acts as an auxiliary radiating device of the floor 140. The third radiator 160 mainly acts as an excitation device. Under the action of the second feed source 170, the third radiator 160 can excite the floor 140 to support wireless signals in some sub-bands in the target frequency band.

[0088] It can be understood that the current weak point area corresponding to the third feeding point 163 may be different from the current weak point area corresponding to the first feeding point 113 and the second feeding point 123. Exemplarily, when the floor 140 forms four current zero points at at least four corners, three current zero points can be selected from them to design the setting positions of the first radiator 110, the second radiator 120, and the third radiator 160. For example, the orthographic projection of the first feeding point 113 of the first radiator 110 on the floor 140 is located in the first current weak point area A1 or the fifth current weak point area A5, the orthographic projection of the second feeding point 123 of the second radiator 120 on the floor 140 is located in the second current weak point area A2 or the sixth current weak point area A6, and the orthographic projection of the third feeding point 163 of the third radiator 160 on the floor 140 can be located in the third current weak point area A3 or the seventh current weak point area A7. Of course, the three feeding points can also select other current weak points for layout, and the embodiment of the present application is not limited to this.

[0089] It is understandable that the third radiator 160 may be, but is not limited to, an LDS radiation structure, an FPC radiation structure, a PDS radiation structure, a metal branch radiation structure, an MDA radiation structure, etc. Among them, the third radiator 160 may be, but is not limited to, a straight strip, an L-shape, an arc shape, or other irregular shapes. The third radiator 160 may extend along the length direction of the floor 140, may extend along the width direction of the floor 140, or may extend along the length direction and the width direction of the floor 140 at the same time. The specific structure of the third radiator 160 is not limited in the embodiment of the present application.

[0090] In the electronic device 10 of the embodiment of the present application, the third feeding point 163 of the third radiator 160 is set in the current weak point area of ​​the characteristic current of the floor 140, and the third radiator 160 and the second feed source 170 can be used together as a feeding structure to stimulate the floor 140 to support the transmission and reception of wireless signals in the target frequency band, and the third radiator 160, the second feed source 170 and the floor 140 can form a second antenna together. Since the third radiator 160 is mainly used as a feeding structure, the third radiator 160 does not have strict electrical size requirements, the length of the third radiator 160 can be shorter, and the space occupied by the third radiator 160 is smaller, so that a miniaturized design can be achieved, and the space utilization rate of the electronic device 10 is higher.

[0091] Among them, refer again Fig. 20 The electronic device 10 may further include a lumped circuit 180. The lumped circuit 180 may be electrically connected between the third feeding point 163 and the second feed source 170. For example, one end of the lumped circuit 180 may be electrically connected between the third feeding point 163 and the second feed source 170, and the other end of the lumped circuit 180 may be electrically connected to the floor 140 to achieve grounding.

[0092] It can be understood that the lumped circuit 180 is a circuit composed of an indefinite number of lumped elements such as resistors, capacitors, inductors, switches, etc. The lumped circuit 180 can form a feeding structure together with the third radiator 160 and the second feed source 170 to feed the floor 140 so that the floor 140 supports the transmission and reception of wireless signals in the target frequency band.

[0093] It can be understood that when the positive projection of the third feeding point 163 on the floor 140 is located in another current weak point area of ​​the characteristic current of the floor 140, the third radiator 160 is not easy to be insufficiently inductive when the second antenna is working; at this time, the lumped circuit 180 is an inductive load circuit relative to the target frequency band. The feeding structure formed by the second feed source 170, the lumped circuit 180 and the third radiator 160 is equivalent to direct inductive excitation of the floor 140. The lumped circuit 180 can provide inductive compensation for the third radiator 160 of the second antenna to achieve miniaturization of the third radiator 160. Among them, the inductive load circuit refers to a circuit or structure that allows current to flow, but the current lags behind the voltage. The inductive load branch is mainly a circuit with an inductive reactance element (such as an inductor) as the main load. In an AC circuit, when current passes through an inductor, an induced electromotive force is generated in the inductor, resulting in energy storage and release in the circuit, so it is called an inductive load. Typical inductive loads include transformers, inductors and other components. It is understandable that the present application can first connect an inductive device in series and then connect an inductive device in parallel between the third radiator 160 and the second feed source 170. The series inductive device can provide inductive compensation for the third radiator 160 of the second antenna, achieve miniaturization, and ensure the radiation performance of the second antenna.

[0094] It can be understood that after the inductive compensation of the lumped circuit 180, the electrical length L of the third radiator 160 can satisfy:

[0095]

[0096] Among them, λ is the wavelength of the wireless signal of part of the target frequency band supported by the second antenna, so that the electrical length of the third radiator 160 can be less than or equal to one-eighth of the wavelength corresponding to the wireless signal of part of the frequency band in the target frequency band and greater than or equal to one-thirty-second of the wavelength corresponding to the wireless signal of part of the frequency band in the target frequency band.

[0097] Among them, the electrical length of the radiator satisfies the following formula:

[0098]

[0099] Wherein, L is the physical length of the radiator, a is the transmission time of the wireless signal of the target frequency band in the radiator, and b is the transmission time of the wireless signal of the target frequency band in free space.

[0100] The electronic device 10 of the embodiment of the present application includes a lumped circuit 180. When the positive projection of the third feeding point 163 on the floor 140 is located at another current weak point area of ​​the characteristic current of the floor 140, the lumped circuit 180 is an inductive load circuit relative to the wireless signal of the target frequency band, so that the lumped circuit 180 can provide inductive compensation for the third radiator 160 of the second antenna, so that the third radiator 160 can be miniaturized and the second antenna can also have better radiation performance.

[0101] Among them, please refer to Fig.21 , Fig.21 for Fig. 20 An electrical connection schematic diagram of the electronic device 10 shown. The antenna assembly 100 also includes a switch unit 190, and the switch unit 190 has a common terminal 191 and N ports. The lumped circuit 180 includes N+1 inductance elements, and the N+1 inductance elements are connected in series to form a series inductance, one end of the series inductance is electrically connected to the third feeding point 163, and the other end of the series inductance is electrically connected to the second feed source 170. Among them, the connection point of two adjacent inductance elements is electrically connected to a port of a switch unit 190, and different connection points are electrically connected to different ports of the switch unit 190. The common terminal 191 is electrically connected to different ports, or the inductance value of the series inductance is different when the common terminal 191 is disconnected from the N ports, so that the operating frequency bands of some sub-bands in the target frequency band supported by the antenna assembly 100 are different.

[0102] It can be understood that the switch unit 190 has a common terminal 191, a first terminal 1921 and a second terminal 1922. The lumped circuit 180 includes a first inductor 181, a second inductor 182 and a third inductor 183. One end of the first inductor 181 is electrically connected to the third feeding point 163, and the other end is electrically connected to between the first terminal 1921 and the second inductor 182. One end of the second inductor 182 is electrically connected to the other end of the first inductor 181, and the other end of the second inductor 182 is electrically connected to the second terminal 1922. One end of the third inductor 183 is electrically connected to the other end of the second inductor 182, and the other end of the third inductor 183 is electrically connected to the second feed source 170 and the common terminal 191. When the common terminal 191 is electrically connected to the first terminal 1921, the antenna assembly 100 supports the first sub-band in the target frequency band. When the common terminal 191 is electrically connected to the second terminal 1922, the antenna assembly 100 supports the second sub-band in the target frequency band. When the common end 191 is electrically disconnected from the first end 1921 and the common end 191 is electrically disconnected from the second end 1922, the antenna assembly 100 supports a third sub-band in the target frequency band, wherein the frequency of the first sub-band is greater than the frequency of the second sub-band, and the frequency of the second sub-band is greater than the frequency of the third sub-band.

[0103] When the common terminal 191 is electrically connected to the first terminal 1921, and the common terminal 191 is electrically disconnected from the second terminal 1922, when the switch unit 190 further includes other ports, and the common terminal 191 is also electrically disconnected from the other ports, it is equivalent to that the second inductor 182 and the third inductor 183 are both short-circuited. At this time, the inductance value of the lumped circuit 180 in series on the path where the second feed source 170 is electrically connected to the third feed point 163 is the inductance value of the first inductor 181, and the first sub-band supported by the antenna assembly 100 is the band with the highest frequency in the target band. It can be understood that when the antenna assembly 100 supports the first sub-band, when the switch unit 190 further includes other ports, the common terminal 191 is also electrically disconnected from the other ports.

[0104] When the common terminal 191 is electrically connected to the second terminal 1922, and the common terminal 191 is electrically disconnected from the first terminal 1921, it is equivalent to that the third inductor 183 is short-circuited. At this time, the inductance value of the lumped circuit 180 in series on the path where the second feed source 170 is electrically connected to the third feed point 163 is the sum of the inductance value of the first inductor 181 and the inductance value of the second inductor 182, and the second sub-band supported by the antenna assembly 100 is a frequency band in the middle of the target frequency band. It can be understood that when the antenna assembly 100 supports the second sub-band, when the switch unit 190 also includes other ports, the common terminal 191 is also electrically disconnected from the other ports.

[0105] When the common terminal 191 is electrically disconnected from the first terminal 1921, and the common terminal 191 is also electrically disconnected from the second terminal 1922, the first inductor 181, the second inductor 182, and the third inductor 183 are not short-circuited. At this time, the inductance value of the lumped circuit 180 in series on the path where the second feed source 170 is electrically connected to the third feed point 163 is the sum of the inductance values ​​of the first inductor 181, the second inductor 182, and the third inductor 183, and the third sub-band supported by the antenna assembly 100 is the lowest frequency band in the target frequency band. It can be understood that when the antenna assembly 100 supports the third sub-band, when the switch unit 190 also includes other ports, the common terminal 191 is also electrically disconnected from the other ports.

[0106] The switch unit 190 may be, but is not limited to, a single-pole four-throw switch (SP4T). The antenna assembly 100 provided in this embodiment realizes the switching of any one of the first sub-band, the second sub-band and the third sub-band in the target frequency band, so that the antenna assembly 100 can support more working frequency bands and has better communication performance.

[0107] In one embodiment, the target frequency band may be a low frequency band, the first sub-band may be a B8 band, the second sub-band may be a B20 band, and the third sub-band may be a B28 band. In another embodiment, the target frequency band may be a mid-high frequency band, the first sub-band may be a band with a center frequency of 2.6G, the second sub-band may be a band with a center frequency of 2.3G, and the third sub-band may be a band with a center frequency of 1.8G.

[0108] In one embodiment, the switch unit 190 further has a third terminal 1923, and the lumped circuit 180 further includes a fourth inductor 184. One end of the fourth inductor 184 is electrically connected to the third terminal 1923, and the other end of the fourth inductor 184 is grounded. When the common terminal 191 is electrically connected to the second terminal 1922 and the common terminal 191 is electrically connected to the third terminal 1923, the antenna assembly 100 supports a fourth sub-band, wherein the frequency of the fourth sub-band is greater than the frequency of the second sub-band. Among them, the fourth inductor 184 is used to perform fine-tuning on the basis of the first sub-band, the second sub-band and the third sub-band. For example, when the common terminal 191 is electrically connected to the second terminal 1922, and the common terminal 191 is electrically connected to the third terminal 1923, it is equivalent to connecting the fourth inductor 184 to the ground in parallel on the basis of the antenna assembly 100 supporting the second sub-band, thereby pulling the second sub-band supported by the antenna assembly 100 to the fourth sub-band, completing the switching of the fourth sub-band.

[0109] The antenna assembly 100 provided in the embodiment of the present application can support more operating frequencies and have better communication performance by setting the fourth inductor 184.

[0110] In this implementation, the second sub-frequency band may be the B20 frequency band, and the fourth sub-frequency band may be the B5 frequency band.

[0111] In one embodiment, see Fig.21 , the switch unit 190 also has a fourth terminal 1924. The lumped circuit 180 also includes a fifth inductor 185. One end of the fifth inductor 185 is electrically connected to the fourth terminal 1924, and the other end of the fifth inductor 185 is electrically connected to the floor 140. When the common terminal 191 is electrically disconnected from the fourth terminal 1924, and when the antenna assembly 100 supports a corresponding frequency band in the target frequency band, the antenna assembly 100 supports a transmission frequency band of the corresponding frequency band, wherein the corresponding frequency band includes any one of the first sub-frequency band, the second sub-frequency band, and the third sub-frequency band. When the common terminal 191 is electrically connected to the fourth terminal 1924, the antenna assembly 100 supports a reception frequency band of the corresponding sub-frequency band in the target frequency band.

[0112] The corresponding sub-bands in the target frequency band (for example, the first sub-band, the second sub-band, and the third sub-band) include a transmitting frequency band and a receiving frequency band, and the frequency of the transmitting frequency band in the corresponding frequency band is slightly different from the frequency of the receiving frequency band. Generally speaking, the frequency of the receiving frequency band in the corresponding frequency band is higher than the frequency of the transmitting frequency band in the corresponding frequency band. For example, the first sub-band includes a transmitting frequency band and a receiving frequency band, and the frequency of the receiving frequency band in the first sub-band is higher than the frequency of the transmitting frequency band of the first sub-band; the second sub-band includes a transmitting frequency band and a receiving frequency band, and the frequency of the receiving frequency band in the second sub-band is higher than the frequency of the transmitting frequency band of the second sub-band; the third sub-band includes a transmitting frequency band and a receiving frequency band, and the frequency of the receiving frequency band in the third sub-band is higher than the frequency of the transmitting frequency band of the third sub-band.

[0113] When the common terminal 191 is electrically disconnected from the fourth terminal 1924, and the antenna assembly 100 supports the corresponding sub-frequency band in the target frequency band, the antenna assembly 100 supports the transmitting frequency band in the corresponding sub-frequency band; when the common terminal 191 is electrically connected to the fourth terminal 1924, the antenna assembly 100 supports the receiving frequency band of the corresponding sub-frequency band in the target frequency band. Thus, the receiving frequency band and the transmitting frequency band of the first sub-frequency band can be switched, the receiving frequency band and the transmitting frequency band of the second sub-frequency band can be switched, and the transmitting frequency band and the receiving frequency band of the third sub-frequency band can be switched through the switch unit 190, the first inductor 181, the second inductor 182, the third inductor 183 and the fifth inductor 185, so that the antenna assembly 100 has better performance when supporting the receiving frequency band and the transmitting frequency band of the corresponding frequency band.

[0114] In one embodiment, the lumped circuit 180 further includes a sixth inductor 186. One end of the sixth inductor 186 is electrically connected to the connection point between the second feed source 170 and the third inductor 183, and the other end of the sixth inductor 186 is grounded. The sixth inductor 186 can improve the matching state of the antenna assembly 100, so that when the antenna assembly 100 supports various frequency bands, the output impedance of the second feed source 170 and the common input impedance of the third radiator 160 and the floor 140 are more matched, so that the energy of the excitation signal output by the second feed source 170 is more loaded to the third radiator 160 and the floor 140, so that the antenna performance of the second antenna is better.

[0115] It can be seen that the second feed source 170 and the lumped circuit 180 are equivalent to direct-fed inductive excitation for the third radiator 160. One end of the lumped circuit 180 is electrically connected to the second feed source 170, and the other end of the lumped circuit 180 is electrically connected to the third feeding point 163 of the third radiator 160, which is equivalent to the lumped circuit 180 being connected in series between the second feed source 170 and the third radiator 160. The lumped circuit 180 provides inductive compensation for the third radiator 160, thereby miniaturizing the third radiator 160. The common end 191 of the switch unit 190 and the connection points of the inductance elements of two of its ports (RF ports, i.e., the first end 1921 and the second end 1922) are different (i.e., accessed in a stepped manner). The total inductance value on the feeding path from the second feed source 170 to the third radiator 160 is controlled by the switch unit 190. The other two ports (the third end 1923 and the fourth end 1924) of the switch unit 190 are connected to the ground by other inductance elements (the third end 1923 is electrically connected to the fourth inductance 184, and the fourth end 1924 is electrically connected to the fifth inductance 185), so as to achieve fine-tuning of the frequency and switch between adjacent frequency bands, such as switching from the B20 band to the B5 band, or switching of the receiving band and the transmitting band of the corresponding sub-band in the target frequency band.

[0116] In addition, in the antenna assembly 100 provided in the embodiment of the present application, the switch unit 190 adopts a step-by-step access switch usage method, which can reduce the additional loss caused by the switch.

[0117] At least one of the first inductor 181, the second inductor 182, the third inductor 183, the fourth inductor 184, the fifth inductor 185, and the sixth inductor 186 satisfies at least one of the following conditions: a single inductor; a plurality of inductors connected in series; a plurality of inductors connected in parallel; a capacitor and an inductor connected in series; a capacitor and an inductor connected in parallel.

[0118] The antenna assembly 100 provided in this embodiment can be switched from 700MHz to 960MHz to cover all frequency bands in the low frequency band. The specific setting can first make the common end 191 and the first end 1921 electrically connected separately (also called the first end 1921 is turned on separately), and the antenna assembly 100 works in the first sub-band (the B8 frequency band in this embodiment), thereby determining the inductance value of the first inductor 181 and the inductance value of the sixth inductor 186. The common end 191 and the second end 1922 are electrically connected separately (also called the second end 1922 is turned on separately), and the antenna assembly 100 works in the second sub-band (the B20 frequency band in this embodiment), thereby determining the inductance value of the second inductor 182. Then disconnect the common terminal 191 from all ports (the first terminal 1921, the second terminal 1922, the third terminal 1923 and the fourth terminal 1924 in this case) (All off), and the antenna assembly 100 works in the third sub-band (the B28 band in this embodiment), thereby determining the inductance value of the third inductor 183. Then electrically connect the common terminal 191 to the second terminal 1922 and the common terminal 191 to the third terminal 1923, and the antenna assembly 100 supports the fourth sub-band, thereby determining the inductance value of the fourth inductor 184. The transmission and reception (TRX) performance optimization status of each frequency band of the first sub-band, the second sub-band, the third sub-band and the fourth sub-band can be debugged according to the needs of the actual project to determine the inductance value of the fifth inductor 185.

[0119] In the antenna assembly 100 provided in this embodiment, the lumped circuit 180 can not only perform inductive control on the second antenna, but also adjust the frequency range of the wireless signal of the target frequency band supported by the floor 140. Under the switching of the switch unit 190, the wireless signal of the target frequency band supported by the floor 140 can cover a wider frequency band. For example, when the target frequency band is a low frequency band, the wireless signal of the target frequency band supported by the floor 140 can be switched from 700 MHz to 960 MHz under the switching of the switch unit 190, completing the coverage of various low frequency bands; when the target frequency band is a medium or high frequency band, the wireless signal of the target frequency band supported by the floor 140 can be switched from 1.8 GHz to 2.6 GHz under the switching of the switch unit 190, covering a wider medium or high frequency band.

[0120] For example, please refer to Fig. 22 , Fig. 22 for Fig. 20 The S11 parameter curve diagram of the second antenna of the electronic device 10 switching between different frequency bands is shown. Fig. 22 The middle curves L16 to L19 are respectively the S11 curves of the second antenna supporting the B5 band, the B8 band, the B20 band and the B28 band. Fig. 22 It can be seen that the first antenna of the present application has better antenna performance in the above four frequency bands. Fig.23, Fig.23 The antenna scheme of the related technology and the present application Fig. 20 FIG. 1 is a comparative schematic diagram of the second antenna of the electronic device 10 shown in FIG. Fig.23 As shown in FIG. (a), the size of the low-frequency antenna 201 of the electronic device 20 in the related art is often about 40 mm, while Fig.23 As shown in Figure (b), the present application embodiment Fig. 20 The size of the second antenna 101 of the electronic device 10 shown can be about 20 mm. The size of the second antenna 101 of the present application is reduced by 50% compared with the size of the low-frequency antenna 201 of the related art. The third radiator 160 of the second antenna 101 of the embodiment of the present application can be miniaturized. Fig.24 , Fig.24 The antenna scheme (low frequency antenna 201) of the related art and the present application Fig. 20 The antenna performance comparison diagram of the second antenna 101 of the electronic device 10 shown in the figure shows that the antenna efficiency of the low-frequency antenna 201 in the related technology when supporting wireless signals in the B8 band, B5 band and B28 band are -9.4dB, -8.8dB and -10.6dB respectively; while the antenna efficiency of the second antenna 101 of the present application when supporting wireless signals in the B8 band, B5 band and B28 band are -9.4dB, -9.3dB and -9dB respectively; the performance of the second antenna 101 of the present application when supporting the B28 band is better than that of the conventional antenna solution, so that the third radiator 160 of the second antenna 101 in the embodiment of the present application can be miniaturized, and the second antenna 101 can also have better radiation performance.

[0121] The second feed source 170, the lumped circuit 180, the third radiator 160 and the floor 140 of the embodiment of the present application can jointly form a second antenna. Under the excitation of the feeding structure jointly formed by the second feed source 170, the lumped circuit 180 and the third radiator 160, the longitudinal current on the floor 140 is fully excited, and the floor 140 can support the transmission and reception of wireless signals in the target frequency band. At this time, the third radiator 160 is mainly used as a feeding excitation device, and the size of the third radiator 160 can be smaller. Compared with the antenna scheme of the related art, the size of the second antenna of the present application can be reduced by 50% or more. For example, the size of the third radiator 160 of the present application can be reduced The third radiator 160 of the second antenna of the present application can be miniaturized because the wavelength of the wireless signal corresponding to the target frequency band is between one eighth and one thirty-second. At the same time, when the switch unit 190 is switched, the wireless signal of the target frequency band supported by the floor 140 can cover a wider frequency band. Thus, the third radiator 160 of the present application can be miniaturized, and the second antenna can also have a wide bandwidth. Moreover, the antenna efficiency of the second antenna of the present application when supporting the B28 frequency band signal is improved by about 1dB compared with the antenna efficiency of the antenna scheme of the related technology when supporting the B28 frequency band signal. The second antenna of the present application also has better antenna performance.

[0122] When the electronic device 10 includes the first feed 130, the second feed 170, the first radiator 110, the second radiator 120, the third radiator 160 and the floor 140 at the same time, the first feed 130, the first radiator 110, the second radiator 120 and the floor 140 can form a first antenna, and the first antenna can support the wireless signal of the target frequency band of the ultra-wide frequency band under the action of the conjugated first radiator 110 and the second radiator 120. The second feed 170, the third radiator 160 and the floor 140 form a second antenna, and the second antenna can cover different sub-bands of the wireless signal of the target frequency band under the action of the lumped circuit 180 and the switch unit 190. The first antenna is used to support the reception and transmission of wireless signals in a sub-band of the target frequency band, and to support the reception of wireless signals in another sub-band of the target frequency band; the second antenna is used to support the transmission and reception of wireless signals in another sub-band of the target frequency band, and to support the reception of wireless signals in a sub-band of the target frequency band. Thus, the first antenna and the second antenna of the present application can realize the transmission and reception of dual-frequency signals. For example, the first antenna can support the transmission and reception of the B20 frequency band and support the reception of the N28 frequency band, the second antenna can support the transmission and reception of the N28 frequency band and support the reception of the B20 frequency band, and the first antenna and the second antenna of the present application can realize the new wireless dual connection (EUTRA NR-Dual Connectivity, referred to as ENDC) transmission of the B20 frequency band and the N28 frequency band.

[0123] It can be understood that since the target frequency band covered by the first antenna is relatively wide, the second antenna can switch between multiple frequency bands of the target frequency band, so that the electronic device 10 can realize the carrier aggregation mode (CA) through the first antenna and the second antenna. The form of multiple frequency bands are resident (for example, multiple frequency bands in low frequency or medium and high frequency are resident) to improve the user experience; at the same time, the electronic device 10 can also support the wireless signal of the target frequency band through the first antenna and the second antenna at the same time. When the wireless signal of the target frequency band is a low frequency signal / medium and high frequency signal, the electronic device 10 can realize a low frequency + low frequency, or medium and high frequency + medium and high frequency antenna mode. At the same time, the first antenna and the second antenna of the present application can also realize ENDC transmission. Compared with the antenna scheme of the related art, the electronic device 10 of the present application can save one switch, which can reduce the production cost of the electronic device 10, reduce the SAR value of the antenna, and the application scenario of the electronic device 10 is wider.

[0124] Based on the structure of the electronic device 10, please refer to Fig.25 , Fig.25 This is a fifth structural diagram of the electronic device 10 provided in the embodiment of the present application. The electronic device 10 may further include a display screen 200, a middle frame 300, a circuit board 400, a battery 500 and a rear housing 600.

[0125] The display screen 200 is disposed on the middle frame 300 to form a display surface of the electronic device 10 for displaying information such as images and texts. The display screen 200 may include a liquid crystal display (LCD) or an organic light-emitting diode (OLED) display.

[0126] The middle frame 300 includes a frame 310 and a middle plate 320. The middle plate 320 may be a thin plate or sheet-like structure, and the frame 310 may form an outer frame structure of the electronic device 10. The middle frame 300 is used to provide support for electronic devices or functional components in the electronic device 10 so as to install the electronic devices and functional components of the electronic device 10 together. For example, structures such as grooves, protrusions, and through holes may be provided on the middle frame 300 to facilitate installation of electronic devices or functional components of the electronic device 10.

[0127] The circuit board 400 is arranged on the middle frame 300 for fixing, and the circuit board 400 is sealed inside the electronic device 10 through the rear shell 600. The circuit board 400 may be integrated with a processor, and may also be integrated with one or more functional components such as an earphone interface, an acceleration sensor, a gyroscope, and a motor. At the same time, the display screen 200 may be electrically connected to the circuit board 400 so that the display of the display screen 200 is controlled by the processor on the circuit board 400.

[0128] It is understandable that the aforementioned first feed 130 and second feed 170 may be, but are not limited to, disposed on the circuit board 400. Of course, the first feed 130 and second feed 170 may also be disposed on other carrier boards of the electronic device 10, which is not limited in the present embodiment.

[0129] The battery 500 is disposed on the middle frame 300, and the battery 500 is sealed inside the electronic device 10 through the rear case 600. At the same time, the battery 500 is electrically connected to the circuit board 400 so that the battery 500 can power the electronic device 10. Among them, a power management circuit may be disposed on the circuit board 400. The power management circuit is used to distribute the voltage provided by the battery 500 to various electronic devices in the electronic device 10.

[0130] The rear shell 600 is connected to the middle frame 300. For example, the rear shell 600 can be attached to the middle frame 300 by an adhesive such as a double-sided adhesive to achieve connection with the middle frame 300. The rear shell 600 is used to seal the electronic devices and functional components of the electronic device 10 inside the electronic device 10 together with the middle frame 300 and the display screen 200 to protect the electronic devices and functional components of the electronic device 10.

[0131] It is understandable that the electronic device 10 further includes a physical key, and the first radiator 110, the second radiator 120 and the third radiator 160 can be arranged at intervals from the physical key, and the first radiator 110, the second radiator 120 and the third radiator 160 can be arranged outside the active area of ​​the physical key. The so-called active area of ​​the physical key refers to the union area of ​​the spatial area where the physical key is located when it is not pressed by the user and the spatial area where the physical key is located when it is pressed by the user. When the first radiator 110, the second radiator 120 and the third radiator 160 are arranged outside the active area of ​​the physical key, the physical key can avoid interfering with the three radiators.

[0132] It can be understood that the above is only an illustrative example of the electronic device 10. The electronic device 10 of the embodiment of the present application may also include components such as a camera, a sensor, and an acoustic-to-electric conversion device. These components can be found in the description of the relevant technology and will not be repeated here.

[0133] Please combine Fig.25 Please also refer to Fig.26 , Fig.26 This is a sixth structural diagram of the electronic device 10 provided in an embodiment of the present application. The frame 310 may include a first frame 311, a second frame 312, a third frame 313 and a fourth frame 314 connected in sequence.

[0134] The first frame 311 and the third frame 313 are arranged opposite to each other, and the second frame 312 and the fourth frame 314 are arranged opposite to each other. The lengths of the second frame 312 and the fourth frame 314 may be smaller than the lengths of the first frame 311 and the third frame 313, so that the second frame 312 and the fourth frame 314 may be short frames of the electronic device 10, and the first frame 311 and the third frame 313 may be long frames of the electronic device 10. The shape of the frame 310 may be adapted to the shape of the floor 140, and the first frame 311 and the third frame 313 of the frame 310 may be parallel to the two first sides 141a and 141b of the floor 140 and have the same extension direction; the second frame 312 and the fourth frame 314 of the frame 310 may be parallel to the two second sides 142a and 142b of the floor 140 and have the same extension direction.

[0135] It can be understood that the first radiator 110 can be arranged at the connection between the first frame 311 and the second frame 312, part of the first radiator 110 can be arranged at the first frame 311, and another part of the first radiator 110 can be arranged at the second frame 312; the second radiator 120 can be arranged at the connection between the second frame 312 and the third frame 313, part of the second radiator 120 can be arranged at the second frame 312, and another part of the second radiator 120 can be arranged at the third frame 313; the third radiator 160 can be arranged at the connection between the third frame 313 and the fourth frame 314, part of the third radiator 160 can be arranged at the third frame 313, and another part of the third radiator 160 can be arranged at the fourth frame 314. At this time, the first radiator 110, the second radiator 120, and the third radiator 160 can be located near the current zero point of the floor 140. Furthermore, when the second frame 312 is the bottom frame 310 of the electronic device 10 in a vertical position, the two radiators are arranged at the bottom of the electronic device 10 , avoiding the influence of physical buttons on the three radiators, thereby ensuring the antenna performance of the electronic device 10 .

[0136] It should be noted that the antenna scheme of the present application is not only applicable to mobile phone antennas, but also to other terminal products such as tablet computers, PCs, large-screen electronic devices, etc.; and the three radiators of the present application can be formed on the frame 310 to form a frame radiator structure, or can be a metal injection molding structure, a flexible circuit board structure, a laser branch forming structure, etc. The present application does not limit the formation method of the radiator. Moreover, the working frequency bands of the multiple antennas of the present application are not limited, for example, they can be a low frequency band, a medium frequency band, a high frequency band, a Wi-Fi band or a GPS band.

[0137] It should be understood that, in the description of this application, terms such as "first", "second", etc. 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.

[0138] 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: The electronic device includes an antenna assembly, the antenna assembly including: A floor, comprising a first side and a second side connected by a bend, wherein the length of the first side is greater than the length of the second side; A first radiator is spaced apart from the floor, the first radiator has a first open end, a second open end and a first feeding point, and the orthographic projection of the first feeding point on the floor is located at a current weak point area of ​​the characteristic current of the floor; A second radiator is spaced apart from the floor, the second radiator has a third open end, a fourth open end and a second feeding point, and an orthographic projection of the second feeding point on the floor is located at a current weak point area of ​​the characteristic current of the floor; and A first feed source is electrically connected to the first feeding point and the second feeding point, respectively. The phase difference of the excitation signal fed by the first feed source to the first feeding point and the second feeding point is 180 degrees. Under the action of the first feed source, the first radiator and the second radiator jointly excite the floor to generate an excitation current flowing along the extension direction of the first edge to support wireless signals in the target frequency band.

2. The electronic device according to claim 1, characterized in that: One of the current weak point areas is located in an area with the intersection of the first side and the second side or the intersection of the extension line of the first side and the extension line of the second side as the center and 1 / 16 of the wavelength of the target frequency band as the radius.

3. The electronic device according to claim 2, characterized in that: The floor comprises two first sides disposed opposite to each other and two second sides disposed opposite to each other, and the number of the current weak point areas is at least four; The orthographic projection of the first feeding point on the floor is located in one of the four current weak areas, and the orthographic projection of the second feeding point on the floor is located in another of the four current weak areas; the first radiator is adjacent to the current weak area where the first feeding point is arranged, and the second radiator is adjacent to the current weak area where the second feeding point is arranged; or, The orthographic projection of the first feeding point on the floor and the orthographic projection of the second feeding point on the floor are both located in the same one of the four current weak point areas; the first radiator and the second radiator are adjacent to the same current weak point area where the first feeding point and the second feeding point are arranged, and the first radiator and the second radiator are adjacent to different sides of the floor.

4. The electronic device according to claim 1, characterized in that: The antenna assembly further comprises: a transmission line, wherein a first end of the transmission line is electrically connected to the first feed source, a second end of the transmission line is electrically connected to the first feed point, and a third end of the transmission line is electrically connected to the second feed point; The transmission line is used to ensure that the phase difference of the excitation signal provided by the first feed source when it is transmitted to the first feeding point and the second feeding point through the transmission line is 180 degrees.

5. The electronic device according to claim 1, characterized in that: The antenna assembly further comprises: A phase shift module is electrically connected between the first feed source and the first feed point, and / or is electrically connected between the first feed source and the second feed point; wherein, The phase shift module is used to make the phase difference of the excitation signal provided by the first feed source when it is transmitted to the first feeding point and the second feeding point be 180 degrees.

6. The electronic device according to claim 1, characterized in that: The antenna assembly further includes at least one of a first matching circuit, a second matching circuit, and a third matching circuit; The first matching circuit is electrically connected to the first feed source, and the first matching circuit is used to match and adjust the impedance of the excitation signal provided by the first feed source; The second matching circuit is electrically connected between the first feed source and the first feeding point, and the second matching circuit is used to match and adjust the impedance of the excitation signal fed into the first radiator; The third matching circuit is electrically connected between the first feed source and the second feed point, and is used for matching and adjusting the impedance of the excitation signal fed into the second radiator.

7. The electronic device according to any one of claims 1 to 6, characterized in that: The antenna assembly further comprises: A third radiator is spaced apart from the floor, the third radiator has a fifth open-circuit end, a sixth open-circuit end and a third feeding point, and the orthographic projection of the third feeding point on the floor is located at another current weak point area of ​​the characteristic current of the floor; and A second feed source is electrically connected to the third feeding point. Under the action of the second feed source, the third radiator excites the floor to generate an excitation current flowing along the extension direction of the first edge to support the transmission and reception of wireless signals in some sub-bands of the target frequency band.

8. The electronic device according to claim 7, characterized in that: The first feed source, the first radiator, the second radiator and the floor form a first antenna; the second feed source, the third radiator and the floor form a second antenna; wherein, The first antenna is used to support the reception and transmission of wireless signals in a sub-frequency band in the target frequency band, and to support the reception of wireless signals in another sub-frequency band in the target frequency band; The second antenna is used to support the transmission and reception of wireless signals in another sub-frequency band in the target frequency band, and to support the reception of wireless signals in a sub-frequency band in the target frequency band.

9. The electronic device according to claim 7, characterized in that: The antenna assembly further comprises: A lumped circuit is electrically connected between the third feeding point and the second feed source, and the lumped circuit is an inductive load circuit relative to the target frequency band.

10. The electronic device according to claim 9, characterized in that: The electrical length of the third radiator satisfy: Wherein, λ is the wavelength of the wireless signal in a partial frequency band in the target frequency band.

11. The electronic device according to claim 9, characterized in that: The antenna assembly further includes a switch unit having a common terminal and N ports; the lumped circuit includes: N+1 inductance elements, wherein the N+1 inductance elements are connected in series to form a series inductance, one end of the series inductance is electrically connected to the third feeding point, and the other end of the series inductance is electrically connected to the second feed source; Wherein, connection points of two adjacent inductance elements are electrically connected to one port, and different connection points are electrically connected to different ports; When the common end is electrically connected to different ports, or the common end is electrically disconnected from the N ports, the inductance value of the series inductor is different, so that the operating frequency bands of some sub-bands in the target frequency band supported by the antenna assembly are different.

12. The electronic device according to claim 11, characterized in that: The N ports include a first end and a second end; the N+1 inductor elements include: a first inductor element, one end of the first inductor element being electrically connected to the third feeding point, and the other end of the first inductor element being electrically connected to the first end; a second inductor element, one end of the second inductor element being electrically connected to the other end of the first inductor element, and the other end of the second inductor element being electrically connected to the second end; and a third inductor element, one end of the third inductor element being electrically connected to the other end of the second inductor element, and the other end of the third inductor element being electrically connected to the second feed source and the common end; When the common end is electrically connected to the first end, the antenna assembly supports a first sub-frequency band in the target frequency band; when the common end is electrically connected to the second end, the antenna assembly supports a second sub-frequency band in the target frequency band; when the common end is electrically disconnected from the first end and the common end is electrically disconnected from the second end, the antenna assembly supports a third sub-frequency band in the target frequency band, wherein the frequency of the first sub-frequency band is greater than the frequency of the second sub-frequency band, and the frequency of the second sub-frequency band is greater than the frequency of the third sub-frequency band.

13. The electronic device according to claim 12, characterized in that: The target frequency band is a low frequency band or a medium or high frequency band; When the target frequency band is a low frequency band, the first sub-frequency band is a B8 frequency band, the second sub-frequency band is a B20 frequency band, and the third sub-frequency band is a B28 frequency band.

14. The electronic device according to claim 12, characterized in that: The switch unit further has a third terminal, and the lumped circuit further includes: a fourth inductor element, one end of which is electrically connected to the third port, and the other end of which is electrically connected to the floor; When the common end is electrically connected to the second port and the common end is electrically connected to the third port, the antenna assembly supports a fourth sub-frequency band, wherein a frequency of the fourth sub-frequency band is greater than a frequency of the second sub-frequency band.

15. The electronic device according to claim 14, characterized in that: When the target frequency band is a low frequency band, the fourth sub-frequency band is a B5 frequency band.

16. The electronic device according to claim 14, characterized in that: The switch unit further has a fourth terminal, and the lumped circuit further includes: a fifth inductor element, one end of the fifth inductor element being electrically connected to the fourth end, and the other end of the fifth inductor element being electrically connected to the floor; When the common end is electrically disconnected from the fourth end, and when the antenna assembly supports a corresponding sub-band in a target frequency band, the antenna assembly supports a transmission frequency band of the corresponding sub-band, wherein the corresponding sub-band includes any one of the first sub-band, the second sub-band, and the third sub-band; When the common end is electrically connected to the fourth end, the antenna assembly supports a receiving frequency band of the corresponding sub-frequency band in the target frequency band.

17. The electronic device according to claim 12, characterized in that: The inductive device also includes: A sixth inductor element, one end of the sixth inductor element is electrically connected to a connection point between the third feed source and the third inductor element, and the other end of the sixth inductor element is grounded.

18. The electronic device according to claim 7, characterized in that: The electronic device further includes a physical key, and the first radiator, the second radiator and the third radiator are all spaced apart from the physical key.

19. The electronic device according to claim 7, characterized in that: The electronic device further comprises a first frame, a second frame, a third frame and a fourth frame connected in sequence, the first frame and the third frame are arranged opposite to each other, and the second frame and the fourth frame are arranged opposite to each other; wherein, Part of the first radiator is arranged on the first frame, and another part of the first radiator is arranged on the second frame; part of the second radiator is arranged on the second frame, and another part of the second radiator is arranged on the third frame; part of the third radiator is arranged on the third frame, and another part of the fourth radiator is arranged on the fourth frame.

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