Antenna assembly and electronic equipment

Abstract

The invention provides an antenna assembly and electronic equipment. The antenna assembly comprises a floor, a first antenna and a second antenna. The floor is provided with a mainboard setting area and a battery setting area, and the mainboard setting area is provided with a first current weakness area and a second current weakness area of characteristic mode current; the first antenna comprises a first radiator and a first feed source, the first radiator is provided with a first open circuit end, a second open circuit end and a first feed point, and the first feed source is electrically connected to the first feed point to support a first target frequency band; the second antenna comprises a second radiating body and a second feed source, the second radiating body is provided with a second feed point, a third open circuit end, a fourth open circuit end and a second feed point, the first radiating body and the second radiating body are arranged at intervals with the floor, and orthographic projections of the first feed point and the second feed point on the floor are located in a first current weak point area and a second current weak point area respectively; the second feed source is electrically connected to the second feed point to enable the second antenna to support a first target frequency band, the first target frequency band is an LB frequency band, and the positions of the first radiator and the second radiator correspond to the mainboard setting area.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to an antenna assembly and an electronic device. Background Art

[0002] With the development of technologies, the popularity of electronic devices with communication functions such as mobile phones is getting higher and higher, and the functions are getting more and more powerful. An antenna assembly is usually included in an electronic device to implement the communication function of the electronic device. However, the antenna assembly in the related art electronic devices has a relatively large volume, which is not conducive to layout in the electronic device. Summary of the Invention

[0003] In a first aspect, this application provides an antenna assembly, which includes:

[0004] A floor having a main board setting area and a battery setting area arranged along a preset direction. The main board setting area is used for setting a main board, and the battery setting area is used for setting a battery. The main board setting area of the floor has a first current weak point area and a second current weak point area of characteristic mode current;

[0005] A first antenna, including a first radiator and a first feeder. The first radiator is spaced from the floor. The first radiator has a first open end, a first feeding point, and a second open end. The orthographic projection of the first feeding point on the floor is located in the first current weak point area. The first feeder is electrically connected to the first feeding point to enable the first antenna to support a first target frequency band; and

[0006] A second antenna, including a second radiator and a second feeder. The second radiator is spaced from the floor. The second radiator has a third open end, a second feeding point, and a fourth open end. The orthographic projection of the second feeding point on the floor is located in the second current weak point area. The second feeder is electrically connected to the second feeding point to enable the second antenna to support the first target frequency band, where the first target frequency band is the LB frequency band, and the positions of the first radiator and the second radiator correspond to the main board setting area.

[0007] In a second aspect, an embodiment of this application provides an electronic device, which includes:

[0008] The antenna assembly as described in the first aspect;

[0009] A main board, which is arranged in the main board setting area of the floor of the antenna assembly; and

[0010] A battery, which is arranged in the battery setting area of the floor of the antenna assembly.

[0011] In summary, for the first antenna of the antenna assembly provided by the embodiment of the present application, the first radiator is spaced apart from the floor, and the orthographic projection of the first feeding point on the floor is located in the first weak current region, which can better excite the excitation current along the set direction of the floor, so that the first antenna of the antenna assembly has a high radiation efficiency in the first target frequency band. It can be seen that the first antenna of the antenna assembly provided by the embodiment of the present application has good communication performance in the first target frequency band. In addition, in the first antenna of the antenna assembly provided by the embodiment of the present application, the floor constitutes the main radiation branch in the first target frequency band and contributes most of the radiation, while the first radiator is equivalent to acting as the radiation driving device of the first antenna of the entire antenna assembly, becoming the excitation condition for the floor to work in the first target frequency band, and the energy proportion of the first radiator is very small. Therefore, in this case, reducing the size of the first radiator has little impact on the overall radiation performance of the first antenna of the antenna assembly. Therefore, the size of the first radiator of the first antenna of the antenna assembly provided by the embodiment of the present application is small. Correspondingly, for the second antenna of the antenna assembly provided by the embodiment of the present application, the second radiator is spaced apart from the floor, and the orthographic projection of the second feeding point on the floor is located in the second weak current region, which can better excite the excitation current along the set direction of the floor, so that the second antenna of the antenna assembly has a high radiation efficiency in the first target frequency band. It can be seen that the second antenna of the antenna assembly provided by the embodiment of the present application has good communication performance. In addition, for the second antenna of the antenna assembly provided by the embodiment of the present application, the floor constitutes the main radiation branch in the first target frequency band and contributes most of the radiation, while the second radiator is equivalent to acting as the radiation driving device of the second antenna of the entire antenna assembly, becoming the excitation condition for the floor to work in the first target frequency band, and the energy proportion of the second radiator is very small. Therefore, in this case, reducing the size of the second radiator has little impact on the overall radiation performance of the second antenna of the antenna assembly. Therefore, the size of the second radiator of the second antenna of the antenna assembly provided by the embodiment of the present application is small. Therefore, the size of the antenna assembly is small, which is convenient for layout in electronic devices.

[0012] In addition, as introduced above, the sizes of the first radiator and the second radiator are relatively small. When the antenna assembly is applied to an electronic device, the electronic device can be equipped with more antennas. Moreover, since the sizes of the first radiator and the second radiator are relatively small, they can be arranged corresponding to the motherboard installation area, without distributing the antenna radiators to the battery installation area, which can enhance the physical strength of the middle frame of the electronic device to which the antenna assembly is applied in the middle of the whole machine. In addition, to facilitate the electrical connection between the first radiator and the first feeder arranged on the motherboard, and to facilitate the electrical connection between the second radiator and the second feeder arranged on the motherboard, the size of the motherboard in the electronic device is usually adapted to the sizes of the first radiator and the second radiator. Generally speaking, to facilitate the electrical connection between the first radiator and the motherboard, when the sizes of the first radiator and the second radiator are both relatively large, the size of the motherboard is also large so that the motherboard is arranged adjacent to the first radiator and the second radiator. If the size of the motherboard is large, then the size of the motherboard installation area is also large. When the size of the motherboard in the preset direction is fixed, a large size of the motherboard installation area will result in a small size of the battery installation area. In the antenna assembly provided by the embodiment of the present application, when the scales of the first radiator and the second radiator are both relatively small, therefore, the size of the motherboard is also small. Since the size of the motherboard is small, the motherboard installation area on the floor for arranging the motherboard is also small. When the size of the floor in the preset direction is fixed, a small size of the motherboard installation area allows the battery installation area to be set larger. Therefore, when the antenna assembly is applied to an electronic device, the electronic device has sufficient space to design the battery, which is beneficial to increasing the capacity of the battery in the electronic device to which the antenna assembly is applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 Is a perspective schematic diagram of an electronic device provided by an embodiment of the present application;

[0015] Figure 2 Is Figure 1 A partial structural schematic diagram of the electronic device shown in;

[0016] Figure 3 Is a schematic diagram of an antenna assembly provided by an embodiment of the present application;

[0017] Figure 4 Is Figure 3Partial structural schematic diagram of the antenna assembly shown;

[0018] Figure 5 For Figure 3 Top schematic diagram of the partial structure of the provided antenna assembly;

[0019] Figure 6 Schematic diagram of the current distribution of the dipole antenna and the antenna assembly provided by the embodiment of the present application;

[0020] Figure 7 Schematic diagram of the distribution of the characteristic current with the largest proportion of the longitudinal current corresponding to the characteristic mode of the floor;

[0021] Figure 8 For Figure 7 Schematic diagram of the weak current region and the strong current region of the current in the floor shown;

[0022] Figure 9 For Figure 3 Schematic diagram of the partial detail identification of the antenna assembly shown in;

[0023] Figure 10 For another embodiment Figure 3 Schematic diagram of the weak current region in the antenna assembly provided in;

[0024] Figure 11 Schematic diagram of the antenna assembly of an embodiment;

[0025] Figure 12 Schematic diagram of the antenna assembly with the inductive device replacing the radiator;

[0026] Figure 13 Schematic diagram of the antenna assembly provided by an embodiment of the present application;

[0027] Figure 14 Schematic diagram of the antenna assembly provided by an embodiment of the present application;

[0028] Figure 15 Schematic diagram of the antenna assembly provided by another embodiment of the present application;

[0029] Figure 16 For Figure 15 Schematic diagram when the first radiator and the second radiator of the antenna assembly shown are formed on the middle frame;

[0030] Figure 17 Schematic diagram of the antenna assembly provided by another embodiment of the present application;

[0031] Figure 18 Schematic diagram of the antenna assembly provided by yet another embodiment of the present application;

[0032] Figure 19Schematic diagram of the antenna assembly provided by another embodiment of the present application;

[0033] Figure 20 Schematic diagram of the antenna assembly provided by yet another embodiment of the present application;

[0034] Figure 21 Simulation schematic diagram of the first antenna in the antenna assembly provided by an embodiment of the present application;

[0035] Figure 22 Simulation schematic diagram of the second antenna in the antenna assembly provided by an embodiment of the present application;

[0036] Figure 23 Efficiency schematic diagram of the second antenna in the antenna assembly provided by an embodiment of the present application when supporting the first target frequency band;

[0037] Figure 24 Efficiency schematic diagram of the second antenna in the antenna assembly provided by an embodiment of the present application when supporting the third target frequency band.

[0038] Description of main element numbers:

[0039] Electronic device 1, antenna assembly 10, main board 20, battery 30, middle frame 40, display screen 50, housing 60;

[0040] Floor 110, first side 1111, second side 1112, first section 11a, second section 11b, current weak point area 110a, current strong point area 110b, main board setting area 110c, battery setting area 110d, first current weak point area 110a(1), second current weak point area 110a(2), third current weak point area 110a(3), fourth current weak point area 110a(4), first side edge 11c, second side edge 11d, third side edge 11e;

[0041] First antenna 120, first radiator 121, first feed source S1, first inductive device 122, first electrical connector 123, first open end 1211, second open end 1212, first feed point P1, first radiation part 120a, second radiation part 120b;

[0042] Second antenna 130, second radiator 131, second feed source S2, third feed source S3, second inductive device 132, second electrical connector 133, third open end 1311, fourth open end 1312, second feed point P2;

[0043] The third antenna 140, the third radiator 141, the fourth antenna 150, the fourth radiator 151, the fifth antenna 160, the fifth radiator 161, the sixth antenna 170, the sixth radiator 171, the seventh antenna 180, the seventh radiator 181, the eighth antenna 190, the eighth radiator 191, the ninth antenna 100, the ninth radiator 1001;

[0044] Radiator 14a, inductive device 14b. Detailed implementation manners

[0045] Next, the technical solutions of the present application will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided in the present application without creative efforts belong to the protection scope of the present application.

[0046] In the present application, referring to "embodiment" means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an exclusive, independent or alternative embodiment to other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments.

[0047] The terms "first", "second", etc. in the specification and claims of the present application and the above accompanying drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example: a component or device including one or more components is not limited to the one or more components listed, but optionally further includes one or more components not listed but inherent to the product shown, or one or more components that should be had based on the described function.

[0048] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , Figure 1 which is a three-dimensional schematic diagram of an electronic device provided by an embodiment of the present application; Figure 2 is Figure 1 a partial structural schematic diagram of the electronic device shown in Figure 3 which is a schematic diagram of an antenna assembly provided by an embodiment of the present application; Figure 4 is Figure 3 a partial structural schematic diagram of the antenna assembly shown in Figure 5 is Figure 3Top schematic diagram of a partial structure of the provided antenna assembly. The electronic device 1 includes an antenna assembly 10, a main board 20, and a battery 30. The main board 20 and the battery 30 are arranged along a preset direction D0, and the battery 30 has a first reference edge 310 and a second reference edge 320 arranged along the preset direction D0. The first reference edge 310 is closer to the main board 20 than the second reference edge 320. The antenna assembly 10 includes a ground plane 110, a first antenna 120, and a second antenna 130. The ground plane 110 has a main board setting area 110c and a battery setting area 110d arranged along the preset direction D0. The main board setting area 110c is used to set the main board 20 (refer to Figure 1 and Figure 2 ), and the battery setting area 110d is used to set the battery 30. The main board setting area 110c of the ground plane 110 has a first current weak point area 110a(1) and a second current weak point area 110a(2) of characteristic mode current. The first antenna 120 includes a first radiator 121 and a first feed source S1. The first radiator 121 is spaced apart from the ground plane 110. The first radiator 121 has a first open end 1211, a first feeding point P1, and a second open end 1212. The orthogonal projection of the first feeding point P1 on the ground plane 110 is located in the first current weak point area 110a(1). The first feed source S1 is electrically connected to the first feeding point P1 so that the first antenna 120 supports a first target frequency band. The second antenna 130 includes a second radiator 131 and a second feed source S2. The second radiator 131 is spaced apart from the ground plane 110. The second radiator 131 has a third open end 1311, a second feeding point P2, and a fourth open end 1312. The orthogonal projection of the second feeding point P2 on the ground plane 110 is located in the second current weak point area 110a(2). The second feed source S2 is electrically connected to the second feeding point P2 so that the second antenna 130 supports the first target frequency band. Wherein, the first target frequency band is the LB frequency band, and the positions of the first radiator 121 and the second radiator 131 correspond to the main board setting area 110c.

[0049] When the antenna assembly 10 is applied to the electronic device 1, the first radiator 121 and the second radiator 131 are arranged on a side of the first reference edge 310 of the battery 30 facing away from the second reference edge 320 of the battery 30.

[0050] When the antenna assembly 10 is applied to the electronic device 1 (please refer to Figure 2)When it is the case, the floor 110 can be the ground of the circuit board, or the ground formed by the middle frame 40, or the ground formed by the shielding member of the display screen 50 of the electronic device 1, and it is not limited in this embodiment. In this embodiment, taking the floor 110 as the ground of the circuit board of the electronic device 1 to which the antenna assembly 10 is applied as an example for illustration, it can be understood that it should not constitute a limitation to the embodiments of the present application. The floor 110 in the circuit board can be, but is not limited to, a metal layer (for example, a copper layer). A large metal layer in the circuit board usually constitutes the floor 110, which is also called the ground electrode. It can be understood that the circuit board also includes multiple insulating layers and multiple wiring layers. The floor 110 is usually sandwiched between two adjacent insulating layers. The wiring layer is also disposed between adjacent insulating layers, and the wiring layer is spaced from the floor 110 by an insulating layer. Different wiring layers can be electrically connected through wires or metal vias. It can be understood that the introduction of the circuit board here is only one case of the circuit board, and it should not be understood as a limitation to the circuit board provided by the embodiments of the present application.

[0051] In one embodiment, the floor 110 and the first radiator 121 form a dipole antenna, the floor 110 is a radiation arm of the dipole antenna, named the first radiation arm, and the first radiator 121 is the other radiation arm of the dipole antenna, named the second radiation arm. When the antenna assembly 10 operates in the first target frequency band, both the floor 110 and the first radiator 121 participate in the operation. That is, both the first radiation arm and the second radiation arm participate in the operation.

[0052] The first radiator 121 can be a Laser Direct Structuring (LDS) radiator, or a Flexible Printed Circuit (FPC) radiator, or a PrintDirect Structuring (PDS) radiator, or a metal stub radiator. When the antenna assembly 10 is applied to the electronic device 1, the first radiator 121 can be a Mechanical Design Antenna (MDA) radiator designed by using the metal inlay design of the electronic device 1 itself. For example, the first radiator 121 can be an antenna radiator designed by using the middle frame 40 formed by the plastic and metal of the electronic device 1. In addition, the first radiator 121 can also be a metal frame antenna radiator designed by a metal middle frame.

[0053] It can be understood that the present application does not specifically limit the shape, structure, and material of the first radiator 121. The shapes of the first radiator 121 include but are not limited to bent shapes, straight shapes, L - shapes, sheet shapes, rod shapes, coatings, thin films, etc. When the first radiator 121 is in a strip shape, the present application does not limit the extension trajectory of the first radiator 121. Therefore, the first radiator 121 can extend in a straight line, a curve, or a multi - segment bent trajectory. The above - mentioned first radiator 121 can be a line with a uniform width on the extension trajectory, or an irregular shape with a gradually changing width, a widened area, or other unequal widths.

[0054] The first radiator 121 has two ends, and neither of the two ends is grounded. In other words, the first radiator 121 is in an open - circuit state at both ends. Therefore, these two ends are respectively named the first open - circuit end 1211 and the second open - circuit end 1212. In this embodiment, the first feeding point P1 is located at the first open - circuit end 1211. The first antenna 120 of the antenna assembly 10 further includes a first electrical connector 123 (see Figures 3 to 5 ), and the first feed source S1 is electrically connected to the first feeding point P1 through the first electrical connector 123. The first electrical connector 123 can be but is not limited to an elastic conductive sheet, a conductive screw, or the like.

[0055] In this embodiment, the first feed source S1 is disposed on the main board 20. The first feed source S1 is electrically connected to the first feeding point P1 through the first electrical connector 123, which can achieve the electrical connection between the first feed source S1 and the first feeding point P1, and is simple and easy to implement.

[0056] Next, the principle of the dipole antenna used in the embodiment of the present application and the working principle of the antenna assembly 10 provided by the embodiment of the present application will be described and explained.

[0057] Please refer to Figure 6 , Figure 6 which is a schematic diagram of the current distribution of the dipole antenna and the antenna assembly provided by the embodiment of the present application. Figure 6 In (a) of Figure 6 is a schematic diagram of the current distribution of the dipole antenna; Figure 6 in (b) of Figure 6 is a schematic diagram of the current distribution after one radiation arm of the dipole antenna is widened; Figure 6As can be seen from (a) to (d), one of the radiation arms of the dipole antenna gradually widens. Thus, it can be seen that the ground plane 110 in the antenna assembly 10 of the present application can be equivalent to one of the radiation arms of the dipole antenna. Specifically, the ground plane 110 in the antenna assembly 10 can be regarded as an antenna oscillator with a certain width in the dipole antenna. In this way, the ground plane 110 and the first radiator 121 are like a dipole antenna with a first feed point P1 offset.

[0058] When the antenna assembly 10 is applied to an electronic device 1 such as a mobile phone, the longitudinal dimension (length) and the transverse dimension (width) of the electronic device 1 are usually about 155 mm × 75 mm. Generally, the longitudinal dimension of the electronic device 1 is equivalent to 1 / 4 of the wavelength of the low-frequency band. According to the basic principle of the dipole antenna, that is, fully exciting the longitudinal current of the ground plane 110, the equivalent aperture of the dipole antenna can be increased and the efficiency can be improved. At the same time, the ground plane 110 in the antenna assembly 10 provided by the embodiment of the present application is an effective radiator (i.e., the first radiation arm). The lower the frequency of the first target band supported by the antenna assembly 10, the more significant the current effect of the ground plane 110, and the longitudinal current of the ground plane 110 can be fully excited, which can effectively improve the radiation efficiency of the antenna assembly 10 in the first target band.

[0059] It can be understood that in this embodiment, the first target band can be a low-frequency (Low Band, LB) band. The embodiment of the present application does not limit the first target band.

[0060] Next, the working principle of the antenna assembly 10 provided by the embodiment of the present application will be described and explained.

[0061] The characteristic mode is a mode characterizing the ground plane 110. By analyzing the characteristic mode (also called the characteristic mode) of the ground plane 110, according to the boundary conditions, the most suitable feeding position can be found. Next, taking the first target band supported by the first antenna 120 of the antenna assembly 10 as a low-frequency band as an example for illustration. Through simulation, the characteristic current with the largest proportion of the longitudinal current mode can be obtained. Please refer to Figure 7 and Figure 8 , Figure 7 is a schematic diagram of the distribution of the characteristic current with the largest proportion of the longitudinal current corresponding to the characteristic mode of the ground plane; Figure 8 is Figure 7 a schematic diagram of the weak current region and the strong current region in the ground plane shown in Figure 7It can be seen that the characteristic mode has maximum and minimum current distributions at specific positions. In addition to the current distribution, the voltage distribution, i.e., the electric field distribution on the floor 110, can also be considered. The phase difference between the electric field distribution and the current distribution in the floor 110 is 90°. That is, the minimum of the electric field distribution in the floor 110 is the same as the maximum of the current distribution in the floor 110; conversely, the maximum of the electric field distribution in the floor 110 is the same as the minimum of the current distribution in the floor 110. In Figure 7 In the curve J next to the floor 110 is to represent the current distribution of the floor 110, and the curve V is to represent the voltage distribution of the floor 110. The curve J shows that the current distribution of the floor 110 is a sine distribution. It can be seen from the curve J that the two ends of the floor 110 are the places where the current is the smallest, and the middle position of the floor 110 is the place where the current is the strongest. The curve V represents that the electric field distribution of the floor 110 is a cosine distribution. Therefore, an inductive coupling element (ICE) can be placed at the maximum position of the characteristic mode current distribution of the floor 110 (i.e., the minimum of the electric field distribution of the floor 110) to excite this characteristic mode; or, a capacitive coupling element (CCE) can be placed at the minimum position of the characteristic mode current distribution of the floor 110 (i.e., the maximum of the electric field distribution of the floor 110) to excite this characteristic mode. Please refer to Figure 8 In Figure 8 In the current weak point area 110a of the characteristic mode current distribution of the floor 110 and the current strong point area 110b of the characteristic mode current distribution of the floor 110. However, the size of the ICE is usually large and not easy to implement; the size of the CCE is relatively small and easy to implement. Therefore, the CCE feeding is adopted in this case. In addition, if you want the antenna assembly 10 to obtain higher radiation efficiency, it is necessary to better excite the longitudinal current distribution of the floor 110 on the floor 110. It should be noted that when using CCE feeding, in addition to setting the first feeding point P1 at the minimum of the characteristic mode current of the floor 110, in the current weak point area 110a of the characteristic mode of the floor 110, in addition to the minimum of the characteristic mode current and the surrounding area adjacent to the minimum of the characteristic mode current are also possible. Therefore, the minimum of the characteristic mode current and the surrounding area adjacent to the minimum of the characteristic mode current are named the current weak point area 110a. In other words, the so-called current weak point area 110a of the characteristic mode current of the floor 110 refers to the area including the minimum of the characteristic mode current of the floor 110, and the current weak point area 110a provided by the embodiment of the present application will be quantified later. The so-called current strong point area 110b of the characteristic mode current of the floor 110 refers to the area including the maximum of the characteristic mode of the floor 110.

[0062] In the embodiment of the present application, the number of current weak regions 110a of the floor 110 is four. The four current weak regions 110a are respectively arranged at intervals. For the convenience of description, these four current weak regions 110a are respectively named as the first current weak region 110a(1), the second current weak region 110a(2), the third current weak region 110a(3), and the fourth current weak region 110a(4). Among them, the first current weak region 110a(1) and the second current weak region 110a(2) are located in the main board setting area 110c. The third current weak region 110a(3) and the fourth current weak region 110a(4) are located on the side of the battery setting area 110d away from the main board setting area 110c. In other words, the main board setting area 110c of the floor 110 has the first current weak region 110a(1) and the second current weak region 110a(2) of the characteristic mode current; the side of the battery setting area 110d of the floor 110 away from the main board setting area 110c has the third current weak region 110a(3) and the fourth current weak region 110a(4) of the characteristic mode current.

[0063] In this embodiment, the first radiator 121 is arranged at an interval from the floor 110, and the orthographic projection of the first feeding point P1 on the floor 110 is located in the first current weak region 110a(1). Therefore, the first radiator 121 excited by the first feeding source S1 serves as a radiation driving device to form a CCE.

[0064] For the first antenna 120 of the antenna assembly 10 provided in the embodiment of the present application, the floor 110 constitutes the main radiation branch of the first target frequency band and contributes most of the radiation of the antenna assembly 10, while the first radiator 121 serves as the radiation driving device of the entire antenna assembly 10 and becomes the excitation condition for the floor 110 to operate in the first target frequency band, and the energy proportion of the first radiator 121 is very small. Therefore, in this case, reducing the size of the first radiator 121 has little impact on the overall radiation performance of the first antenna 120 of the antenna assembly 10. It can be seen that the first radiator 121 described above excites the current of the floor 110, the floor 110 constitutes the main branch supporting the first target frequency band, and the first radiator 121 serves as the radiation driving device. Reducing the size (usually the length) of the first radiator 121 will not affect the radiation efficiency. Therefore, in the first antenna 120 of the antenna assembly 10 provided in the embodiment of the present application, the size of the first radiator 121 is small, which provides more possibilities for the layout of the antenna assembly 10 in the electronic device 1 and improves the flexibility of the antenna design in the electronic device 1.

[0065] In summary, the radiator excites the current in the floor 110, and the floor 110 constitutes the main stub supporting the corresponding frequency band. The radiator acts as a radiation driving device. Reducing the size (usually the length) of the radiator does not affect the radiation efficiency. Therefore, this is also called antenna miniaturization technology.

[0066] Next, the second antenna 130 will be introduced in detail.

[0067] The second radiator 131 can be a Laser Direct Structuring (LDS) radiator, or a Flexible Printed Circuit (FPC) radiator, or a PrintDirect Structuring (PDS) radiator, or a metal stub radiator. When the antenna assembly 10 is applied to the electronic device 1, the second radiator 131 can be a Mechanical Design Antenna (MDA) radiator designed by using the metal insert of the electronic device 1 itself. For example, the second radiator 131 can be an antenna radiator designed by using the middle frame 40 formed by the plastic and metal of the electronic device 1. In addition, the second radiator 131 can also be a metal frame antenna radiator designed by the metal middle frame.

[0068] It can be understood that the present application does not specifically limit the shape, structure and material of the second radiator 131. The shapes of the second radiator 131 include but are not limited to bent shape, straight shape, L shape, sheet shape, rod shape, coating, film, etc. When the second radiator 131 is in a strip shape, the present application does not limit the extension trajectory of the second radiator 131. Therefore, the second radiator 131 can extend in a straight line, curve, multi-segment bend and other trajectories. The above-mentioned second radiator 131 can be a line with a uniform width on the extension trajectory, or an irregular shape with a gradually changing width, a widened area, etc.

[0069] The second radiator 131 has two ends, and neither of the two ends is grounded. In other words, the second radiator 131 is in an open-circuit state at both ends. Therefore, these two ends are respectively named the third open end 1311 and the fourth open end 1312. The second feeding point P2 is located at the third open end 1311. The second antenna 130 of the antenna assembly 10 further includes a second electrical connector 133 (see Figures 3 to 5 ), and the second feed source S2 is electrically connected to the second feeding point P2 through the second electrical connector 133. The second electrical connector 133 can be but not limited to an elastic conductive sheet, a conductive screw, etc.

[0070] In this embodiment, the second feed source S2 is disposed on the main board 20, and the second feed source S2 is electrically connected to the second feeding point P2 through the second electrical connector 133, so as to realize the electrical connection between the second feed source S2 and the second feeding point P2, which is simple and easy to implement.

[0071] In one embodiment, the ground plane 110 and the second radiator 131 form a dipole antenna. The ground plane 110 is a radiation arm of the dipole antenna, named the third radiation arm, and the second radiator 131 is the other radiation arm of the dipole antenna, named the fourth radiation arm. When the antenna assembly 10 operates in the first target frequency band, both the ground plane 110 and the second radiator 131 are involved in the operation. That is, both the third radiation arm and the fourth radiation arm are involved in the operation.

[0072] In the embodiment of the present application, the ground plane 110 can be regarded as a radiation arm (also called an antenna element) with a certain width. In this way, the ground plane 110 and the second radiator 131 are like a dipole antenna offset from the second feeding point P2. The lower the first target frequency band supported by the dipole antenna, the more significant the current effect of the ground plane 110, and the excitation current (also called the longitudinal current) in the same direction as the preset direction (when the ground plane 110 is rectangular or quasi-rectangular, the preset direction is the extension direction of the long side) can be fully excited on the ground plane 110, which can effectively improve the radiation efficiency of the antenna assembly 10.

[0073] For the antenna assembly 10 provided in the embodiment of the present application, the ground plane 110 constitutes the main radiation branch of the first target frequency band and contributes most of the radiation of the antenna assembly 10. The second radiator 131 is equivalent to acting as the radiation driving device of the second antenna 130 of the entire antenna assembly 10, becoming the excitation condition for the ground plane 110 to operate in the first target frequency band, and the energy ratio of the second radiator 131 is very small. Therefore, in this case, reducing the size of the second radiator 131 has little impact on the overall radiation performance of the antenna assembly 10. Therefore, in the antenna assembly 10 provided in the embodiment of the present application, the size of the second radiator 131 is small.

[0074] As introduced above, the sizes of the first radiator 121 and the second radiator 131 are small. When the antenna assembly 10 is applied to the electronic device 1, the electronic device 1 can be provided with more antennas. Generally speaking, in the related art, when the size of the first radiator 121 is large, the size of the first radiator 121 in the preset direction D0 is also large. To facilitate the electrical connection of the first electrical connector 123 (such as an elastic conductive sheet or a conductive screw) between the first feeding point P1 and the first feeding source S1 of the main board 20, the first feeding source S1 is usually arranged adjacent to the first feeding point P1. Correspondingly, in the related art, when the size of the second radiator 131 is large, the size of the second radiator 131 in the preset direction D0 is also large. To facilitate the electrical connection of the second electrical connector 133 (such as an elastic conductive sheet or a conductive screw) between the second feeding point P2 and the second feeding source S2 of the main board 20, the second feeding source S2 is usually arranged adjacent to the second feeding point P2. Since the first feeding source S1 and the second feeding source S2 are arranged on the main board 20, the size of the main board 20 is large so that the first feeding source S1 is adjacent to the first feeding point P1 and the second feeding source S2 is adjacent to the second feeding point P2. Thus, it can be seen that in the related art, the size of the main board 20 is large. Correspondingly, the main board setting area 110c for arranging the main board 20 is also large. When the size of the electronic device 1 in the preset direction D0 is fixed, if the size of the main board setting area 110c is large, then the size of the battery setting area 110d in the related art is small, which in turn results in a small capacity of the battery 30 arranged in the battery setting area 110d. However, in the antenna assembly of the electronic device 1 provided by the embodiment of the present application, the sizes of the first radiator 121 and the second radiator 131 are small. Therefore, the main board setting area 110c can be made small. When the size of the electronic device 1 in the preset direction D0 is fixed, the battery setting area 110d is large, and the first radiator 121 and the second radiator 131 are arranged corresponding to the main board setting area 110c, without distributing the first radiator 121 and the second radiator 131 to the battery setting area 110d. Therefore, when the antenna assembly 10 is applied to the electronic device 1, the main board 20 in the electronic device 1 is narrow, and there is enough space in the electronic device 1 to design the battery 30, which is beneficial to increasing the capacity of the battery 30 in the electronic device 1 to which the antenna assembly 10 is applied. In addition, since there is enough space in the electronic device 1 to arrange the battery 30, the thickness of the battery 30 can be reduced, and thus the overall thickness of the electronic device 1 to which the antenna assembly 10 is applied can be reduced.In addition, when the first radiator 121 and the second radiator 131 are antenna radiators designed using the middle frame 40 in the electronic device 1 to which the antenna assembly 10 is applied, the sizes of the first radiator 121 and the second radiator 131 are relatively small, which can result in better structural strength of the middle frame 40.

[0075] The main board setting area 110c and the battery setting area 110d can be arranged at intervals or connected. In this embodiment, the case where the main board setting area 110c and the battery setting area 110d are arranged at intervals is used for illustration. From the illustrated perspective, the main board setting area 110c is located above the floor 110, and the battery setting area 110d is located below the floor 110. It can be understood that as the placement posture of the floor 110 changes, the relative positional relationship between the main board setting area 110c and the battery setting area 110d in the floor 110 will also change.

[0076] The first radiator 121 and the second radiator 131 are arranged corresponding to the main board setting area 110c, and the specific description is as follows.

[0077] Please refer to Figure 9 , Figure 9 For Figure 3 a partial detailed identification schematic diagram of the antenna assembly shown in. The floor 110 includes two relatively arranged first sides 1111 and second sides 1112 respectively bent and connected to the two first sides 1111. In this embodiment, the floor 110 includes two second sides 1112, and the two second sides 1112 are opposite and arranged at intervals. The first side 1111 includes a first section 11a and a second section 11b. The first section 11a is bent and connected to one of the two second sides 1112 (the second side 1112 located at the top in the illustration), and the second section 11b is connected to the other of the two second sides 1112 (the second side 1112 located at the bottom in the illustration). The main board setting area 110c has a first side 11c, and both ends of the first side 11c are bent and connected to the two first sections 11a respectively, and the first side 11c is opposite and arranged at intervals to the first side 1111. Thus, it can be seen that the main board setting area 110c is an area enclosed by the first section 11a of the first side 1111, one of the two second sides 1112 (the second side 1112 located at the top in the illustration), and the first side 11c.

[0078] The battery setting area 110d has a second side 11d and a third side 11e. Both ends of the second side 11d are bent and connected to the two second segments 11b respectively, and the second side 11d is opposite to and spaced from the first side 1111. When the main board setting area 110c is spaced from the battery setting area 110d, the first side 11c is opposite to and spaced from the second side 11d. When the main board setting area 110c is connected to the battery setting area 110d, the first side 11c coincides with the second side 11d to form the same side. The third side 11e is opposite to and spaced from the second side 11d, and the third side 11e faces away from the first side 11c compared with the second side 11d. It can be seen that the battery setting area 110d is an area surrounded by the second segment 11b of the first side 1111, the second side 11d and the third side 11e.

[0079] The first radiator 121 is disposed corresponding to the main board setting area 110c, and includes: the first radiator 121 is located on one side of one of the two first segments 11a (the first segment 11a on the right side in the figure) away from the other of the two first segments 11a (the first segment 11a on the left side in the figure); or, the first radiator 121 is located on one side of the other of the two first segments 11a (the first segment 11a on the left side in the figure) away from one of the two first segments 11a (the first segment 11a on the right side in the figure); or, the first radiator 121 is located on one side of one of the two first sides 1111 (the second side 1112 at the top in the figure) away from the battery setting area 110d; or, a part of the first radiator 121 is located outside one of the two first sides 1111 (the second side 1112 at the top in the figure), and another part of the first radiator 121 is located outside the first segment 11a.

[0080] Correspondingly, the second radiator 131 is disposed corresponding to the main board setting area 110c, and includes: the second radiator 131 is located on one side of one of the two first segments 11a (the first segment 11a on the right side in the figure) away from the other of the two first segments 11a (the first segment 11a on the left side in the figure); or, the second radiator 131 is located on one side of the other of the two first segments 11a (the first segment 11a on the left side in the figure) away from one of the two first segments 11a (the first segment 11a on the right side in the figure); or, the second radiator 131 is located on one side of one of the two first sides 1111 (the second side 1112 at the top in the figure) away from the battery setting area 110d; or, a part of the second radiator 131 is located outside one of the two first sides 1111 (the second side 1112 at the top in the figure), and another part of the second radiator 131 is located outside the first segment 11a.

[0081] In the schematic diagram of this embodiment, the first radiator 121 is partially located outside one of the two first sides 1111 (the second side 1112 at the top in the diagram), and the other part of the first radiator 121 is located outside one of the two first segments 11a (the first segment 11a on the right in the diagram); and the second radiator 131 is partially located outside one of the two first sides 1111 (the second side 1112 at the top in the diagram), and the other part of the second radiator 131 is located outside the other of the two first segments 11a (the first segment 11a on the left in the diagram). It can be understood that it should not be understood as a limitation on the antenna assembly 10 provided in the embodiment of the present application.

[0082] Please continue reading Figure 2 , the main board 20 includes a third reference edge 210 and a fourth reference edge 220 arranged at intervals along the preset direction D0. The fourth reference edge 220 is closer to the first reference edge 310 than the third reference edge 210. In addition, the main board 20 also includes a fifth reference edge 230 and a sixth reference edge 240. The fifth reference edge 230 is connected to the third reference edge 210 and the fourth reference edge 220 by bending, and the sixth reference edge 240 is connected to the third reference edge 210 and the fourth reference edge 220 by bending, and the sixth reference edge 240 is opposite to the fifth reference edge 230 and is arranged at intervals.

[0083] Taking the main board 20 as a reference, part of the first radiator 121 is located on the side of the third reference edge 210 away from the fourth reference edge 220, and the other part of the first radiator 121 is located on the side of the sixth reference edge 240 away from the fifth reference edge 230. Part of the second radiator 131 is located on the side of the third reference edge 210 away from the fourth reference edge 220, and the other part of the second radiator 131 is located on the side of the fifth reference edge 230 away from the sixth reference edge 240.

[0084] It should be noted that when both the first antenna 120 and the second antenna 130 support the first target frequency band, in one embodiment, the first antenna 120 can support both the transmission and reception of signals in the first target frequency band; the second antenna 130 can support the reception of signals in the first target frequency band, but does not support the transmission in the first target frequency band. Understandably, in other embodiments, the first antenna 120 can support at least one of the transmission or reception of signals in the first target frequency band. Correspondingly, the second antenna 130 can support at least one of the transmission or reception of signals in the first target frequency band. Whether the first antenna 120 supports the transmission or reception of signals in the first target frequency band can be configured according to the scenario in which the antenna assembly 10 is applied. Correspondingly, whether the second antenna 130 supports the transmission or reception of signals in the first target frequency band can be configured according to the scenario in which the antenna assembly 10 is applied.

[0085] In summary, for the first antenna 120 of the antenna assembly 10 provided by the embodiment of the present application, the first radiator 121 is spaced apart from the floor 110, and the orthographic projection of the first feeding point P1 on the floor 110 is located in the first weak current region 110a(1), which can better excite the excitation current along the floor 110 in the preset direction, so that the first antenna 120 of the antenna assembly 10 has a higher radiation efficiency in the first target frequency band. Thus, it can be seen that the first antenna 120 of the antenna assembly 10 provided by the embodiment of the present application has better communication performance in the first target frequency band. In addition, in the first antenna 120 of the antenna assembly 10 provided by the embodiment of the present application, the floor 110 constitutes the main radiation branch in the first target frequency band and contributes most of the radiation, while the first radiator 121 is equivalent to acting as the radiation driving device of the first antenna 120 of the entire antenna assembly 10, becoming the excitation condition for the floor 110 to operate in the first target frequency band, and the energy ratio of the first radiator 121 is very small. Therefore, in this case, reducing the size of the first radiator 121 has little impact on the overall radiation performance of the first antenna 120 of the antenna assembly 10. Therefore, the size of the first radiator 121 of the first antenna 120 of the antenna assembly 10 provided by the embodiment of the present application is small. Correspondingly, for the second antenna 130 of the antenna assembly 10 provided by the embodiment of the present application, the second radiator 131 is spaced apart from the floor 110, and the orthographic projection of the second feeding point P2 on the floor 110 is located in the second weak current region 110a(2), which can better excite the excitation current along the floor 110 in the preset direction, so that the second antenna 130 of the antenna assembly 10 has a higher radiation efficiency in the first target frequency band. Thus, it can be seen that the second antenna 130 of the antenna assembly 10 provided by the embodiment of the present application has better communication performance. In addition, in the second antenna 130 of the antenna assembly 10 provided by the embodiment of the present application, the floor 110 constitutes the main radiation branch in the first target frequency band and contributes most of the radiation, while the second radiator 131 is equivalent to acting as the radiation driving device of the second antenna 130 of the entire antenna assembly 10, becoming the excitation condition for the floor 110 to operate in the first target frequency band, and the energy ratio of the second radiator 131 is very small. Therefore, in this case, reducing the size of the second radiator 131 has little impact on the overall radiation performance of the second antenna 130 of the antenna assembly 10. Therefore, the size of the second radiator 131 of the second antenna 130 of the antenna assembly 10 provided by the embodiment of the present application is small. Therefore, the size of the antenna assembly 10 is small, which is convenient for layout in the electronic device 1.

[0086] In addition, as introduced above, the sizes of the first radiator 121 and the second radiator 131 are small. When the antenna assembly 10 is applied to the electronic device 1, the electronic device 1 can be provided with more antennas. In addition, since the sizes of the first radiator 121 and the second radiator 131 are small, the first radiator 121 and the second radiator 131 can be arranged corresponding to the main board setting area 110c, that is, they can avoid the battery setting area 110d. Instead of distributing the first radiator 121 and the second radiator 131 to the battery setting area 110d, the main board setting area 110c can be made narrower and the battery setting area 110d can be made larger, and the first radiator 121 and the second radiator 131 can avoid the battery setting area 110d. Therefore, when the antenna assembly 10 is applied to the electronic device 1, the electronic device 1 has sufficient space to design the battery 30, which is beneficial to increasing the capacity of the battery 30 in the electronic device 1 to which the antenna assembly 10 is applied. In addition, when the first radiator 121 and the second radiator 131 are antenna radiators designed using the middle frame 40 in the electronic device 1 to which the antenna assembly 10 is applied, the sizes of the first radiator 121 and the second radiator 131 are small, which can make the structural strength of the middle frame 40 better.

[0087] The following provides a quantitative description of the first current weak point area 110a(1) and the second current weak point area 110a(2) in the antenna assembly 10 provided by the embodiment of the present application.

[0088] Please further refer to Figure 8 , the ground plane 110 includes two first sides 1111 arranged oppositely and second sides 1112 respectively bent and connected to the two first sides 1111, wherein the length of the second side 1112 is less than the length of the first side 1111. In the schematic diagram of this embodiment, the current weak point area 110a is located within a square area with the intersection of the extension lines of the first side 1111 and the second side 1112 as the vertex and with a side length of 1 / 16 of the wavelength of the first target frequency band. In this embodiment, the connection between the first side 1111 and the second side 1112 is taken as a right angle for illustration. When the connection between the first side 1111 and the second side 1112 is a right angle, the intersection of the extension lines of the first side 1111 and the second side 1112 is located on the first side 1111 and on the second side 1112.

[0089] In the embodiments of the present application, the number of current weak areas 110a of the floor 110 is four. The four current weak areas are arranged at intervals. For the convenience of description, these four current weak areas 110a are respectively named the first current weak area 110a(1), the second current weak area 110a(2), the third current weak area 110a(3), and the fourth current weak area 110a(4). Among them, the first current weak area 110a(1) and the second current weak area 110a(2) are located in the main board setting area 110c, and the third current weak area 110a(3) and the fourth current weak area 110a(4) are located in the battery setting area 110d. In other words, the main board setting area 110c of the floor 110 has the first current weak area 110a(1) and the second current weak area 110a(2) of the characteristic mode current; the battery setting area 110d of the floor 110 has the third current weak area 110a(3) and the fourth current weak area 110a(4) of the characteristic mode current.

[0090] Specifically, the first current weak area 110a(1) is located within a square area with a vertex at the intersection of the extension line of one of the two first sides 1111 and the extension line of one of the two second sides 1112, and with a side length of 1 / 16 of the wavelength of the first target frequency band. The second current weak area 110a(2) is located within a square area with a vertex at the intersection of the extension line of the other of the two first sides 1111 and the extension line of one of the two second sides 1112, and with a side length of 1 / 16 of the wavelength of the first target frequency band.

[0091] When the first current weak area 110a(1) is located within a square area with a vertex at the intersection of the extension line of one of the two first sides 1111 and the extension line of one of the two second sides 1112, and with a side length of 1 / 16 of the wavelength of the first target frequency band, therefore, the current within the first current weak area 110a(1) is relatively weak. The orthogonal projection of the first feeding point P1 on the floor 110 is located within the first current weak area 110a(1), which can better excite the excitation current in the floor 110 along the same extension direction of the first side 1111, so that the first antenna 120 of the antenna assembly 10 has a higher radiation efficiency in the first target frequency band.

[0092] The second current weak point area 110a(2) is located within a square area with the intersection of the extension line of the other one of the two first sides 1111 and the extension line of one of the two second sides 1112 as the vertex and with a side length of 1 / 16 of the wavelength of the first target frequency band. Therefore, the current within the second current weak point area 110a(2) is relatively weak. The orthogonal projection of the second feeding point P2 on the floor 110 is located within the second current weak point area 110a(2), which can better excite the excitation current in the floor 110 along the same extension direction of the first side 1111, enabling the second antenna 130 of the antenna assembly 10 to have a higher radiation efficiency in the first target frequency band.

[0093] Please refer to Figure 10 , Figure 10 for another embodiment Figure 3 which is a schematic diagram of the current weak point area in the antenna assembly provided in the other embodiment. The floor 110 includes two relatively arranged first sides 1111 and second sides 1112 respectively bent and connected to the two first sides 1111, wherein the length of the second side 1112 is less than the length of the first side 1111. In the schematic diagram of this embodiment, the floor 110 includes a first side 1111 and a second side 1112 that are bent and connected, wherein the length of the first side 1111 is greater than the length of the second side 1112. The current weak point area 110a is located within an area with the intersection of the extension line of the first side 1111 and the extension line of the second side 1112 as the center O and with a radius R of 1 / 16 of the wavelength of the first target frequency band.

[0094] In the embodiment of the present application, the number of current weak point areas 110a of the floor 110 is four. The four current weak point areas are respectively arranged at intervals. For the convenience of description, these four current weak point areas 110a are respectively named the first current weak point area 110a(1), the second current weak point area 110a(2), the third current weak point area 110a(3), and the fourth current weak point area 110a(4). Among them, the first current weak point area 110a(1) and the second current weak point area 110a(2) are located in the main board setting area 110c, and the third current weak point area 110a(3) and the fourth current weak point area 110a(4) are located in the battery setting area 110d. In other words, the main board setting area 110c of the floor 110 has the first current weak point area 110a(1) and the second current weak point area 110a(2) of the characteristic mode current. The battery setting area 110d of the floor 110 has the third current weak point area 110a(3) and the fourth current weak point area 110a(4) of the characteristic mode current on the side facing away from the main board setting area 110c.

[0095] Specifically, the first current weak point area 110a(1) is located within a region centered at the intersection of the extension line of one of the two first sides 1111 and the extension line of one of the two second sides 1112, with a radius of 1 / 16 of the wavelength of the first target frequency band. The second current weak point area 110a(2) is located within a region centered at the intersection of the extension line of the other of the two first sides 1111 and the extension line of the one of the two second sides 1112, with a radius of 1 / 16 of the wavelength of the first target frequency band.

[0096] When the first current weak point area 110a(1) is located within a region centered at the intersection of the extension line of one of the two first sides 1111 and the extension line of one of the two second sides 1112, with a radius of 1 / 16 of the wavelength of the first target frequency band, therefore, the current within the first current weak point area 110a(1) is relatively weak. The orthogonal projection of the first feeding point P1 on the floor 110 is located within the first current weak point area 110a(1), which can better excite the excitation current in the floor 110 along the same extension direction of the first side 1111, enabling the first antenna 120 of the antenna assembly 10 to have a higher radiation efficiency in the first target frequency band.

[0097] The second current weak point area 110a(2) is located within a region centered at the intersection of the extension line of the other of the two first sides 1111 and the extension line of the one of the two second sides 1112, with a radius of 1 / 16 of the wavelength of the first target frequency band. Therefore, the current within the second current weak point area 110a(2) is relatively weak. The orthogonal projection of the second feeding point P2 on the floor 110 is located within the second current weak point area 110a(2), which can better excite the excitation current in the floor 110 along the same extension direction of the first side 1111, enabling the second antenna 130 of the antenna assembly 10 to have a higher radiation efficiency in the first target frequency band.

[0098] It should be noted that Figure 8 and Figure 10 the ranges selected for the current weak point area 110a shown in these two implementation manners are basically the same, and both the current minimum value and the surrounding area of the current minimum value are included within the current weak point area 110a in these two implementation manners.

[0099] Next, the principles used in the antenna assembly 10 provided in each implementation manner of the present application will be introduced. Please refer to Figure 11 and Figure 12 , Figure 11 which is a schematic diagram of an antenna assembly in an implementation manner; Figure 12Schematic diagram of an antenna assembly with a susceptive device replacing a radiator. Among them, Figure 12 Figure (a) in is a schematic diagram of the antenna assembly 10 without a susceptive device; Figure 12 Figure (b) in is a schematic diagram of the antenna assembly 10 with a susceptive device. The antenna assembly 10 includes a radiator 14a, a feed source S, and a susceptive device 14b. The radiator 14a has a feed point P. One end of the susceptive device 14b is electrically connected to the feed source S, and the other end of the susceptive device 14b is electrically connected to the feed point P. As can be seen from Figure 12 it can be seen that Figure 12 in Figure (b) in , the length of the radiator of the antenna assembly 10 including the susceptive device 14b is smaller.

[0100] In this embodiment, one end of the susceptive device 14b in the antenna assembly 10 is electrically connected to the feed source S, and the other end is electrically connected to the feed point P, which is equivalent to connecting the susceptive device 14b in series with the feed source S to the feed point P of the radiator 14a.

[0101] It should be noted that the so-called susceptive device 14b refers to a device that exhibits inductive characteristics within the target frequency band supported by the antenna assembly 10. The susceptive device 14b may include at least one of the following situations: a single inductor; a series connection of multiple inductors; a parallel connection of multiple inductors; a series connection of a capacitor and an inductor; a parallel connection of a capacitor and an inductor, as long as the susceptive device 14b exhibits inductive characteristics within the target frequency band supported by the antenna assembly 10.

[0102] As introduced earlier, when the orthographic projection of the feed point P on the floor 110 is located in the weak current region 110a of the characteristic mode of the floor 110, an excitation current along the extension direction of the first side 1111 can be better excited. The floor 110 constitutes the main radiation branch of the target frequency band, contributing most of the radiation of the antenna assembly 10, while the radiator 14a acts as the radiation driving device of the entire antenna assembly 10, becoming the excitation condition for the floor 110 to operate in the target frequency band, and the energy proportion of the radiator 14a is very small. Therefore, in this case, reducing the size of the radiator 14a has little impact on the overall radiation performance of the antenna assembly 10.

[0103] Furthermore, as can be seen from Figure 12 it can also be seen that the size of the radiator 14a in the antenna assembly 10 with the susceptive device 14b is smaller.

[0104] In addition, the susceptive device 14b can compensate for the inductive deficiency caused by the miniaturization of the size of the radiator 14a, enabling the antenna assembly 10 to have good antenna performance in the target frequency band and enabling the antenna assembly 10 to operate well in the target frequency band.

[0105] Please refer to Figure 13 , Figure 13 which is a schematic diagram of an antenna assembly provided by an embodiment of the present application. In this embodiment, the first antenna 120 includes a first inductive device 122. One end of the first inductive device 122 is electrically connected to the first feed source S1, and the other end of the first inductive device 122 is electrically connected to the first feeding point P1.

[0106] The first inductive device 122 can be, but is not limited to, a lumped inductor. In the antenna assembly 10 provided by the embodiment of the present application, since the first antenna 120 includes the first inductive device 122, the size of the first radiator 121 can be further reduced.

[0107] In addition, the first inductive device 122 can compensate for the inductive deficiency caused by the miniaturization of the size of the first radiator 121, so that the first antenna 120 of the antenna assembly 10 has good antenna performance in the first target frequency band, and enables the first antenna 120 of the antenna assembly 10 to operate well in the first target frequency band.

[0108] In this embodiment, the first inductive device 122 can satisfy at least one of the following conditions: a single inductor; a series connection of multiple inductors; a parallel connection of multiple inductors. As long as the first inductive device 122 exhibits inductive characteristics within the first target frequency band supported by the first antenna 120 of the antenna assembly 10. In a specific device implementation form, the first inductive device 122 can be a lumped inductor.

[0109] Further, in an embodiment, the electrical length of the first radiator 121 satisfies: where λ 1 is the wavelength of the electromagnetic wave signal in the first target frequency band.

[0110] The first radiator 121 is in an open-circuit state at both ends. Considering the requirement for miniaturization of the first radiator 121, the electrical length of the first radiator 121 is selected as: At the same time, considering that if the physical length of the first inductive device 122 replacing the first radiator 121 is too large, more energy loss will be introduced. Therefore, the electrical length of the first radiator 121 is selected as In summary, the electrical length of the first radiator 121 provided by the embodiment of the present application satisfies: On the one hand, the size of the first radiator 121 can be made smaller, and on the other hand, when the first antenna 120 of the antenna assembly 10 supports the first target frequency band, the energy loss can be made smaller.

[0111] It should be noted that the electrical length of the first radiator 121 satisfies the following formula:

[0112] where L 1 is the physical length of the first radiator 121, a is the time for the electromagnetic wave signal of the first target frequency band to transmit in the first radiator 121, and b is the transmission time of the electromagnetic wave signal of the first target frequency band in free space.

[0113] Please refer to Figure 14 , Figure 14 which is a schematic diagram of an antenna assembly provided by an embodiment of the present application. In this embodiment, the second antenna 130 includes a second inductive device 132. One end of the second inductive device 132 is electrically connected to the second feed source S2, and the other end of the second inductive device 132 is electrically connected to the second feed point P2.

[0114] The second inductive device 132 can be, but is not limited to, a lumped inductor. In the antenna assembly 10 provided by the embodiment of the present application, since the second antenna 130 includes the second inductive device 132, the size of the second radiator 131 can be further reduced.

[0115] In addition, the second inductive device 132 can make up for the lack of inductance caused by the miniaturization of the size of the second radiator 131, so that the second antenna 130 of the antenna assembly 10 has good antenna performance in the first target frequency band, and enables the second antenna 130 of the antenna assembly 10 to work well in the first target frequency band.

[0116] In this embodiment, the second inductive device 132 can satisfy at least one of the following conditions: a single inductor; a series connection of multiple inductors; a parallel connection of multiple inductors. As long as the first inductive device 122 exhibits inductive characteristics within the first target frequency band supported by the second antenna 130 of the antenna assembly 10. In a specific device implementation form, the second inductive device 132 can be a lumped inductor.

[0117] In the schematic diagram of this embodiment, the embodiment in which the second antenna 130 includes the second inductive device 132 is combined with the embodiment in which the first antenna 120 does not include the first inductive device 122 for illustration. It can be understood that in other embodiments, the second antenna 130 including the second inductive device 132 can also be combined with the embodiment in which the first antenna 120 includes the first inductive device 122.

[0118] In one embodiment, the electrical length of the second radiator 131 satisfies: where λ 1 is the wavelength of the electromagnetic wave signal in the first target frequency band.

[0119] The second radiator 131 is in an open - circuit state at both ends. Considering the requirement for miniaturization of the second radiator 131, the electrical length L of the second radiator 131 2 is selected to be less than or equal to Meanwhile, considering that an overly large physical length of the second inductive device 132152 replacing the second radiator 131 will introduce more energy losses, therefore, the electrical length of the second radiator 131 is selected as In summary, the electrical length of the second radiator 131 provided by the embodiment of the present application satisfies: On the one hand, it can make the size of the second radiator 131 smaller, and on the other hand, it can make the second antenna 130 of the antenna assembly 10 have less energy loss when supporting the second target frequency band.

[0120] It should be noted that the electrical length of the second radiator 131 satisfies the following formula:

[0121] where L 2 is the physical length of the second radiator 131, c is the time for the electromagnetic wave signal in the first target frequency band to transmit in the second radiator 131, and d is the transmission time of the electromagnetic wave signal in free space.

[0122] Please refer to Figure 15 , Figure 15Schematic diagram of an antenna assembly provided in another embodiment of the present application. In this embodiment, the antenna assembly 10 includes a first antenna 120 and a second antenna 130. For the first antenna 120 and the second antenna 130, please refer to the description of the previous embodiment and will not be elaborated here. In this embodiment, the antenna assembly 10 further includes a third antenna 140. The third antenna 140 is used to support a second target frequency band. Wherein, the third antenna 140 includes a third radiator 141, the third radiator 141 is arranged corresponding to the main board setting area 110c and avoids the battery setting area 110d, and the third radiator 141 is closer to the battery setting area 110d than the first radiator 121. In other words, when the antenna assembly 10 is applied to the electronic device 1, the third radiator 141 is arranged on the side of the first reference edge 310 of the battery 30 facing away from the second reference edge 320 of the battery 30, and the third radiator 141 is closer to the first reference edge 310 than the first radiator 121.

[0123] From another perspective, the third radiator 141 is located on the side of the sixth reference edge 240 facing away from the fifth reference edge 230, and the third radiator 141 is closer to the first reference edge 310 than the first radiator 121.

[0124] It should be noted that the antenna assembly 10 further including the third antenna 140 can be combined into the antenna assembly 10 provided in any previous embodiment. The antenna assembly 10 in the schematic diagram of this embodiment should not be construed as a limitation to the embodiments of the present application. For example, in the schematic diagram of this embodiment, the antenna assembly 10 further including the third antenna 140 is combined into the antenna assembly 10 provided in a previous embodiment, wherein the first antenna 120 in the antenna assembly 10 does not include a first inductive device 122, and the second antenna 130 does not include a second inductive device 132. In other embodiments, the antenna assembly 10 further including the third antenna 140 is combined into the antenna assembly 10 provided in the previous embodiment where the first antenna 120 includes a first inductive device 122; and / or, the antenna assembly 10 further including the third antenna 140 is combined into the antenna assembly 10 provided in the previous embodiment where the second antenna 130 includes a second inductive device 132.

[0125] The third radiator 141 can be a Laser Direct Structuring (LDS) radiator, or a Flexible Printed Circuit (FPC) radiator, or a Print Direct Structuring (PDS) radiator, or a metal stub radiator. When the antenna assembly 10 is applied to the electronic device 1, the third radiator 141 can be a Mechanical Design Antenna (MDA) radiator designed by using the metal insert of the electronic device 1 itself. For example, the third radiator 141 can be an antenna radiator designed by using the middle frame 40 formed by the plastic and metal of the electronic device 1. In addition, the third radiator 141 can also be a metal frame antenna radiator designed by the metal middle frame.

[0126] It can be understood that the present application does not specifically limit the shape, structure and material of the third radiator 141. The shapes of the third radiator 141 include but are not limited to bent shape, straight shape, L shape, sheet shape, rod shape, coating, film, etc. When the third radiator 141 is in a strip shape, the present application does not limit the extension trajectory of the third radiator 141. Therefore, the third radiator 141 can extend in a straight line, curve, multi-segment bending and other trajectories. The above-mentioned third radiator 141 can be a line with a uniform width on the extension trajectory, or an irregular shape with a gradually changing width, a widened area, etc., and unequal widths.

[0127] In this embodiment, the second target frequency band can be but is not limited to the Ultra High Frequency (UHF) band. The antenna assembly 10 further includes a third antenna 140, and the third antenna 140 can support the second target frequency band. Therefore, the antenna assembly 10 can not only support the first target frequency band but also support the third target frequency band, and the antenna assembly 10 has good communication performance.

[0128] In addition, the third radiator 141 of the third antenna 140 is arranged corresponding to the main board setting area 110c. In the schematic diagram of this embodiment, the third radiator 141 is located on the right side of the first segment 11a on the right. The third radiator 141 is closer to the battery setting area 110d than the first radiator 121, and the third radiator 141 does not need to be distributed in the battery setting area 110d.

[0129] As can be seen from the foregoing description, the first radiator 121 of the first antenna 120 is relatively small in size, so there is enough space for the third radiator 141 of the third antenna 140 to avoid the battery setting area 110d. In addition, since the first radiator 121 of the first antenna 120 is relatively small in size, there is enough space for the third radiator 141 of the third antenna 140, so the third antenna 140 has better antenna performance when supporting the second target frequency band.

[0130] Further, as can be seen from the above description, the floor 110 includes a first side 1111 and a second side 1112 connected by bending. The side length of the second side 1112 is less than the side length of the first side 1111. The first radiator 121 includes a first radiating portion 120a and a second radiating portion 120b connected by bending. The first radiating portion 120a is arranged corresponding to the first side 1111, and the second radiating portion 120b is arranged corresponding to the second side 1112. The third radiator 141 is arranged on the side of the first radiating portion 120a away from the second radiating portion 120b, avoiding the battery setting area 110d.

[0131] In this embodiment, the second radiating portion 120b is arranged corresponding to the second side 1112. For example, the second radiating portion 120b is arranged on the outer side of the second side 1112 away from the battery setting area 110d. It can be seen that in the antenna assembly 10 provided in the embodiment of the present application, the radiator includes a first radiating portion 120a and a second radiating portion 120b connected by bending. While satisfying that the orthographic projection of the first feeding point P1 on the floor 110 is located in the first current weak point area 110a(1), the size of the first radiator 121 corresponding to the first side 1111 is small, that is, the size of the first radiating portion 120a is small, and there is enough space for the third radiator 141 to avoid the battery setting area 110d.

[0132] As can be seen from the previous introduction, the first radiator 121 of the first antenna 120 is relatively small in size. When the first radiator 121 is located in the upper right corner, the third radiator 141 can be moved up and away from the battery setting area 110d. The antenna performance of the frequency band supported by the third antenna 140 is improved. When the second target frequency band is the N78 frequency band of the UHB frequency band, compared with the related art, the antenna assembly 10 provided in this embodiment can improve the antenna performance of the N78 frequency band by 2dB.

[0133] Please also read Figure 15 and Figure 16 , Figure 16 for Figure 15Schematic diagram of the first radiator and the second radiator of the antenna assembly shown in [reference] when formed on the middle frame. With reference to the main board 20, both the first radiation part 120a and the third radiator 141 are disposed on a side of the sixth reference edge 240 away from the fifth reference edge 230, and the second radiation part 120b is located on a side of the third reference edge 210 away from the fourth reference edge 220.

[0134] In an embodiment, there is a gap between the first radiation part 120a and the first side 1111, and the gap can be a clearance space; there is a gap between the third radiator 141 and the first side 1111, and the gap can also be a clearance space.

[0135] When the first radiator 121 and the third radiator 141 are radiators formed on the middle frame 40 of the electronic device 1, the first radiator 121 and the third radiator 141 can be formed by opening slits on the middle frame 40. Specifically, please refer to Figure 16 , the middle frame 40 includes a frame body 410 and a border part 420, and the border part 420 is connected to the outer periphery of the frame body 410. There is a first gap 420a between the border part 420 and the frame body 410. The border part 420 has a circumferential side surface 420b facing away from the frame body 410. The border part 420 has a second gap 420c, a third gap 420d, and a fourth gap 420e with openings on the circumferential side surface 420b. Among them, the second gap 420c, the third gap 420d, and the fourth gap 420e are spaced apart, and the second gap 420c, the third gap 420d, and the fourth gap 420e are respectively communicated with the first gap 420a. The first gap 420a, the second gap 420c, the third gap 420d, and the fourth gap 420e are clearance spaces for the first radiator 121 and the third radiator 141, and are necessary conditions for the operation of the first radiator 121 and the third radiator 141.

[0136] Both the first antenna 120 and the second antenna 130 support the first frequency band and the second frequency band of the first target frequency band. The second antenna 130 cooperates with the first antenna 120 to achieve dual connectivity (E-UTRAN New Radio-Dual Connectivity, ENDC) of 4G and 5G for the first frequency band and the second frequency band. Specifically, the first antenna 120 is used to support one of transmission and reception for the first frequency band, and the second antenna 130 is used to support the other of transmission and reception for the first frequency band; and the first antenna 120 is used to support one of transmission and reception for the second frequency band, and the second antenna 130 is used to support the other of transmission and reception for the second frequency band.

[0137] When the second antenna 130 cooperates with the first antenna 120 to achieve ENDC for the first frequency band and the second frequency band, the antenna assembly 10 can have better communication performance in the first target frequency band.

[0138] Further, in an embodiment, the first target frequency band is the LB frequency band, the first frequency band is the N28 frequency band, the second frequency band is the B20 frequency band, and the second frequency band cooperates with the first frequency band to achieve ENDC for the N28 frequency band and the B20 frequency band.

[0139] In this embodiment, the first antenna 120 and the second antenna 130 cooperate to achieve ENDC for the N28 frequency band + B20 frequency band, which can meet the communication requirements of the antenna assembly 10 for the N28 frequency band + B20 frequency band in the low frequency band, and enable the antenna assembly 10 to have better communication performance in the N28 frequency band + B20 frequency band of the LB frequency band.

[0140] In addition, the antenna assembly 10 can meet the ENDC for the N28 frequency band + B20 frequency band of the LB frequency band, and therefore can meet the requirements of the European operation duration.

[0141] Please refer to Figure 17 , Figure 17 which is a schematic diagram of an antenna assembly provided in another embodiment of the present application. The second antenna 130 further includes a third feeder S3. The third feeder S3 is electrically connected to the second feeding point P2 so that the second antenna 130 also supports a third target frequency band.

[0142] The second antenna 130 further including the third feeder S3 can be incorporated into the antenna assembly 10 provided in any of the previous embodiments. The antenna assembly 10 shown in the schematic diagram of this embodiment should not be construed as a limitation to the antenna assembly 10 provided in the embodiments of the present application.

[0143] In one embodiment, the first target frequency band is a low-frequency band, and the third target frequency band is a Wireless Fidelity (WiFi) band.

[0144] In the related art, when the second antenna 130 supports the first target frequency band and also wants to support the third target frequency band, the size of the second radiator 131 needs to be increased so that the second radiator 131 can support the third target frequency band. However, in the related art, due to the large size of the second radiator 131 of the antenna assembly 10, there is not enough space for the second antenna 130 to support both the first target frequency band and the third target frequency band.

[0145] In the second antenna 130 of the antenna assembly 10 provided by the embodiment of the present application, the second feeding point P2 is located in the second current weak point region 110a(2). When the second antenna 130 supports the first target frequency band, the size of the second radiator 131 can be made smaller, and the second radiator 131 does not need to occupy a large space. When the second antenna 130 can also support the third target frequency band, in order to match the third target frequency, there is enough space to appropriately increase the size of the second radiator 131. In addition, the first feeding point P1 is located in the first current weak point region 110a(1), which also makes the size of the first radiator 121 smaller, and thus there is a large space in the antenna assembly 10.

[0146] It can be seen that in the antenna assembly 10 provided by the embodiment of the present application, since the first feeding point P1 is located in the first current weak point region 110a(1) and the second feeding point P2 is located in the second current weak point region 110a(2), there is enough space in the antenna assembly 10 to arrange the second radiator 131 so that the second radiator 131 can support both the first target frequency band and the third target frequency band.

[0147] In this embodiment, the second antenna 130 includes a second feed source S2 and a third feed source S3. Both the second feed source S2 and the third feed source S3 are electrically connected to the second feeding point P2, that is, the second radiator 131 is multiplexed. The second feed source S2 excites the second radiator 131 to support the first target frequency band, and the third feed source S3 excites the second radiator 131 to support the third target frequency band. Therefore, the second antenna 130 has more communication frequency bands and better communication performance.

[0148] In one embodiment, the first target frequency band is the LB band, and the third target frequency band is the WiFi band, where the WiFi band includes the WiFi 2.4G band and the WiFi 5G band.

[0149] It can be seen that the second antenna 130 can support the LB band, the WiFi 2.4G band, and the WiFi 5G band, can support more frequency bands, and has good communication performance.

[0150] In the related art, when the second antenna 130 supports the LB band and also wants to support the WiFi 2.4G band and the WiFi 5G band, the size of the second radiator 131 needs to be lengthened so that the second radiator 131 can support the WiFi 2.4G band and the WiFi 5G band. However, in the related art, due to the large size of the second radiator 131 of the antenna assembly 10, there is not enough space for the second antenna 130 to support the WiFi 2.4G band and the WiFi 5G band on the basis of supporting the LB band.

[0151] In the second antenna 130 of the antenna assembly 10 provided by the embodiment of the present application, the second feeding point P2 is located in the second current weak point area 110a(2). When the second antenna 130 supports the LB band, the size of the second radiator 131 can be made smaller, and the second radiator 131 does not need to occupy a large space. When the second antenna 130 can also support the third target frequency band, in order to match the third target frequency, there is enough space to appropriately increase the size of the second radiator 131. In addition, the first feeding point P1 is located in the first current weak point area 110a(1), which also makes the size of the first radiator 121 smaller, and thus there is a large space in the antenna assembly 10.

[0152] It can be seen that in the antenna assembly 10 provided by the embodiment of the present application, since the first feeding point P1 is located in the first current weak point area 110a(1) and the second feeding point P2 is located in the second current weak point area 110a(2), there is enough space in the antenna assembly 10 to arrange the second radiator 131, so that the second radiator 131 can support the LB band, the WiFi 2.4G band, and the WiFi 5G band.

[0153] In one embodiment, the second antenna 130 supports the first frequency band and the second frequency band of the first target frequency band, and the second antenna 130 also supports the third target frequency band. The first target frequency band is the LB frequency band, and the third target frequency band is the WiFi frequency band. Therefore, the second antenna 130 can implement a co-body design of L (the first frequency band) + L (the second frequency band) of the LB frequency band and the WiFi antenna.

[0154] The first antenna 120 is also used to support a second target frequency band, where the frequency of the second target frequency band is greater than the frequency of the first target frequency band. Specifically, the first feeder S1 feeds an excitation signal (which can be named the first excitation signal) that supports the first target frequency band to the first feeding point P1 of the first radiator 121, so that the first antenna 120 supports the first target frequency band. In addition, the first feeder S1 also feeds an excitation signal (which can be named the second excitation signal) that supports the second target frequency band to the first feeding point P1 of the first radiator 121, so that the first antenna 120 supports the second target frequency band.

[0155] In this embodiment, the first antenna 120 can not only support the first target frequency band but also support the second target frequency band. Therefore, the first antenna 120 can support more frequency bands and has better communication performance.

[0156] In one embodiment, the first target frequency band is the LB frequency band, and the second target frequency band is the UHB frequency band.

[0157] In one embodiment, the first target frequency band is the LB frequency band, and the second target frequency band is the UHB frequency band. Therefore, the first antenna 120 can support the LB frequency band and can also support the UHB frequency band, and can meet the communication requirements of the LB frequency band and the UHB frequency band.

[0158] In one embodiment, the second target frequency band includes the N78 frequency band. In other words, the first antenna 120 can support the LB frequency band and the N78 frequency band in the UHB frequency band.

[0159] Please refer to Figure 18 , Figure 18 which is a schematic diagram of an antenna assembly provided in another embodiment of the present application. The antenna assembly 10 includes a first antenna 120 and a second antenna 130. The first antenna 120 and the second antenna 130 are as described above and will not be elaborated here. In addition, the antenna assembly 10 further includes a fourth antenna 150. The fourth antenna 150 is used to support the first target frequency band, where the fourth antenna 150 includes a fourth radiator 151, and a part of the fourth radiator 151 is arranged corresponding to the battery setting area 110d.

[0160] In this embodiment, a part of the fourth radiator 151 is disposed corresponding to the battery setting area 110d, and another part of the fourth radiator 151 is disposed corresponding to the side of the floor 110 where the battery setting area 110d faces away from the main board setting area 110c.

[0161] The antenna assembly 10 further includes a fourth antenna 150 that can be combined into the antenna assembly 10 provided in any of the previous embodiments. The antenna assembly 10 shown in the schematic diagram of this embodiment should not be construed as a limitation on the antenna assembly 10 provided in the embodiments of the present application.

[0162] In this embodiment, in addition to the first antenna 120 supporting the first target frequency band and the second antenna 130 supporting the first target frequency band in the antenna assembly 10, the fourth antenna 150 also supports a target frequency band. Therefore, there are three antennas in the antenna assembly 10 that can support the first target frequency band. The first antenna 120, the second antenna 130, and the fourth antenna 150 can cooperate with each other to achieve more functions.

[0163] Further, please refer to Figure 19 , Figure 19Schematic diagram of an antenna assembly provided for another embodiment of the present application. In this embodiment, the antenna assembly 10 includes a first antenna 120, a second antenna 130, and a third antenna 140. In addition, the antenna assembly 10 further includes a fifth antenna 160, and / or a sixth antenna 170. In this embodiment, the case where the antenna assembly 10 includes the fifth antenna 160 and the sixth antenna 170 is taken as an example for illustration, and it should not be construed as a limitation on the embodiments of the present application. The fifth antenna 160 has a fifth radiator 161, and the position of the fifth radiator 161 corresponds to the main board setting area 110c. Thus, it can be seen that the fifth radiator 161 is arranged corresponding to the main board setting area 110c and avoids the battery setting area 110d. The fifth antenna 160 is used to support the second target frequency band, the fourth target frequency band, and the fifth target frequency band. The sixth antenna 170 has a sixth radiator 171, and the position of the sixth radiator 171 corresponds to the main board setting area 110c. Specifically, the sixth radiator 171 is arranged on a side of the main board setting area 110c away from the battery setting area 110d. From another perspective, when the antenna assembly 10 is applied to the electronic device 1, with the main board 20 as a reference, when the antenna assembly 10 is applied to the electronic device 1, the fifth radiator 161 is arranged on a side of the first reference edge 310 away from the second reference edge 320. In addition, the fifth radiator 161 is also arranged on a side of the fifth reference edge 230 away from the sixth reference edge 240. From another perspective, when the antenna assembly 10 is applied to the electronic device 1, with the main board 20 as a reference, the sixth radiator 171 is arranged on a side of the first reference edge 310 away from the second reference edge 320. In addition, the sixth radiator 171 is also arranged on a side of the third reference edge 210 away from the fourth reference edge 220. The sixth antenna 170 is used to support the second target frequency band and the sixth target frequency band.

[0164] As can be seen from the previous introduction, in the antenna assembly 10 provided by the embodiment of the present application, the size of the second radiator 131 is small. Therefore, there is enough space to arrange the second radiator 131 and the fifth radiator 161. A certain distance can be provided between the second radiator 131 and the fifth radiator 161, which is beneficial to improving the isolation between the second antenna 130 and the fifth antenna 160; in addition, the antenna performance of the frequency bands supported by the second antenna 130 and the fifth antenna 160 can be improved. For example, the antenna performance of the MHB frequency band and the N78 frequency band can be improved.

[0165] The second target frequency band may be, but is not limited to, the UHB frequency band. For example, the second target frequency band may be, but is not limited to, the N78 frequency band in the UHB frequency band. The fourth target frequency band may be, but is not limited to, the Middle High Band (MHB). The fifth target frequency band is the Near Field Communication (NFC) frequency band. The sixth target frequency band is the Global Positioning System (GPS) L1 frequency band.

[0166] In this embodiment, the antenna assembly 10 includes a third antenna 140, a fifth antenna 160, and a sixth antenna 170. The third antenna 140, the fifth antenna 160, and the sixth antenna 170 can all support the second target frequency band. Therefore, there are three antennas in the antenna assembly 10 that can support the second target frequency band. The third antenna 140, the fifth antenna 160, and the sixth antenna 170 can cooperate with each other to achieve more functions.

[0167] Further, please refer to Figure 20 , Figure 20Schematic diagram of the antenna assembly provided for another embodiment of the present application. The third antenna 140 is further configured to support a fourth target frequency band. The antenna assembly 10 further includes a seventh antenna 180 and an eighth antenna 190. The seventh antenna 180 has a seventh radiator 181, and the seventh radiator 181 corresponds to the main board setting area 110c. Specifically, the seventh radiator 181 is disposed on a side of the main board setting area 110c away from the battery setting area 110d. When the antenna assembly 10 is applied to the electronic device 1, the seventh radiator 181 is disposed on a side of the first reference edge 310 away from the second reference edge 320. The seventh antenna 180 is configured to support the fourth target frequency band. The eighth antenna 190 has an eighth radiator 191, and the position of the eighth radiator 191 corresponds to the battery setting area 110d. The eighth antenna 190 is configured to support the fourth target frequency band. Specifically, the eighth radiator 191 is disposed on a side of the battery setting area 110d away from the main board setting area 110c. From another perspective, when the antenna assembly 10 is applied to the electronic device 1, with the main board 20 as a reference, the seventh radiator 181 is disposed on a side of the third reference edge 210 away from the fourth reference edge 220. In this embodiment, the seventh radiator 181 is closer to the first radiator 121 than the sixth radiator 171. From another perspective, when the antenna assembly 10 is applied to the electronic device 1, with the battery 30 as a reference, the eighth radiator 191 is disposed on a side of the second reference edge 320 away from the first reference edge 310.

[0168] In one embodiment, the fourth target frequency band may be, but is not limited to, a middle high frequency band (MHB).

[0169] It can be seen that the third antenna 140 can support the second target frequency band and the fourth target frequency band. The third antenna 140 can support more frequency bands and has better communication performance. Both the third antenna 140 and the seventh antenna 180 in the antenna assembly 10 can support the fourth target frequency band. Therefore, the antenna assembly 10 has better communication performance in the fourth target frequency band.

[0170] As described above, the size of the first radiator 121 of the first antenna 120 is small. When the first radiator 121 is located in the upper right corner, therefore, the third radiator 141 can be moved upward away from the battery setting area 110d. The antenna performance of the frequency band supported by the third antenna 140 is improved. When the second target frequency band is the N78 frequency band of the UHB band and the fourth target frequency band is the MHB band, compared with the related art, the antenna assembly 10 provided in this embodiment can improve the antenna performance of the N78 frequency band and the MHB band by 2 dB.

[0171] In addition, since the size of the first radiator 121 of the first antenna 120 is small, there is enough space to arrange the first radiator 121 and the third radiator 141. A certain distance can be provided between the first radiator 121 and the third radiator 141, which is beneficial to improving the isolation between the first antenna 120 and the third antenna 140. In addition, the antenna performance of the frequency bands supported by the first antenna 120 and the third antenna 140 can be improved. For example, the antenna performance of the MHB band and the N78 band can be improved.

[0172] It can be understood that the antenna assembly 10 shown in the schematic diagram of this embodiment should not be construed as a limitation on the antenna assembly 10 provided in the embodiments of the present application.

[0173] In one embodiment, the antenna assembly 10 includes a first antenna 120 and a second antenna 130. For the first antenna 120, please refer to the previous description and will not be elaborated here. The second antenna 130 includes a second radiator 131, a second feed source S2, and a third feed source S3. The second feed source S2 is electrically connected to the second feeding point P2 so that the second antenna 130 supports the first target frequency band. The third feed source S3 is electrically connected to the second feeding point P2 so that the second antenna 130 also supports the third target frequency band. In addition, the antenna assembly 10 further includes a ninth antenna 100. The ninth antenna 100 includes a ninth radiator 1001, which is arranged corresponding to the main board setting area 110c and avoids the battery setting area 110d. The ninth antenna 100 is used to support the third target frequency band. When the antenna assembly 10 is applied to the electronic device 1, with the main board 20 as a reference, the ninth radiator 1001 is arranged on the side of the first reference edge 310 away from the second reference edge 320. In addition, the ninth radiator 1001 is also arranged on the side of the fifth reference edge 230 away from the sixth reference edge 240.

[0174] In the schematic diagram of this embodiment, taking the example where the antenna assembly 10 further includes a ninth antenna 100 incorporated into the antenna assembly 10 provided in one embodiment, for example, the antenna assembly 10 further includes other antennas in addition to the first antenna 120, the second antenna 130, and the ninth antenna 100. The embodiments of the present application do not limit whether the antenna assembly 10 includes other antennas in addition to the first antenna 120, the second antenna 130, and the ninth antenna 100. When other antennas are included, it is not limited whether they include the other antennas as shown in the figure. The antenna assembly 10 shown in the schematic diagram of the embodiments of the present application should not be construed as a limitation on the antenna assembly 10 provided in the embodiments of the present application.

[0175] In this embodiment, both the second antenna 130 and the ninth antenna 100 in the antenna assembly 10 can support the third target frequency band. Therefore, the antenna assembly 10 has good communication performance in the third target frequency band.

[0176] It can be understood that the description of the frequency bands supported by each antenna in the antenna assembly 10 provided in the above respective embodiments should not be construed as meaning that each antenna can only support the corresponding frequency band. In some embodiments, in addition to supporting the frequency bands described in the above respective embodiments, each antenna can also support other frequency bands.

[0177] It can be understood that the antenna assembly 10 shown in the schematic diagram of this embodiment should not be construed as a limitation on the antenna assembly 10 provided in the embodiments of the present application.

[0178] In addition, in one embodiment, the first antenna 120 further includes a switching circuit, named the first switching circuit. The first switching circuit is used to make the first antenna 120 support different sub - frequency bands in the first target frequency band according to preset different switching parameters (named the first switching parameters). Specifically, in one embodiment, the first switching circuit includes a first switching switch and a plurality of first matching branches. The first switching switch is electrically connected to at least one of the plurality of first matching branches to the first radiator 121. The first switching switch can be, but is not limited to, a single - pole four - throw switch (SP4T). The embodiments of the present application do not limit the type of the first switching switch provided for the antenna assembly 10.

[0179] In addition, in one embodiment, the fourth antenna 150 further includes a switching circuit, named the second switching circuit. The second switching circuit is electrically connected to the fourth radiator, and the second switching circuit is configured to enable the fourth antenna 150 to support different sub-bands in the first target frequency band according to preset different switching parameters (named the second switching parameters). Specifically, in one embodiment, the second switching circuit includes a second switching switch and a plurality of second matching branches. The second switching switch is electrically connected to at least one of the plurality of second matching branches to the fourth radiator 151. The second switching switch can be, but is not limited to, 4 single-pole double-throw switches (4SPST). The present application embodiment does not limit the model of the second switching switch of the antenna assembly 10.

[0180] In other embodiments, other antennas in the antenna assembly 10 may also include a switching circuit. For example, the third antenna 140, the fifth antenna 160, the eighth antenna 190, etc. may also include a switching circuit. The switching circuit may include a switching switch and a matching branch, and the switching switch and the matching branch cooperate to adjust the resonance of each antenna, further improving the performance of each antenna.

[0181] In addition, in other embodiments, the antenna assembly 10 may further include other antennas, and the other antennas may be disposed in the main board 20 area. The other antennas can be, but are not limited to, PFC antennas and / or LDS antennas. The other antennas can further expand the communication frequency band or specifications of the antenna assembly 10. For example, the other antennas can support, but are not limited to, the Global Positioning System (GPS) L5 frequency band.

[0182] It can be understood that, in some embodiments, each antenna includes a feed source in addition to the radiator. For example, the third antenna 140 includes a fourth feed source in addition to the third radiator 141; the fourth antenna 150 includes a fifth feed source in addition to the fourth radiator 151.

[0183] Next, the performance of the antenna assembly 10 provided by the embodiments of the present application will be simulated and described with reference to the simulation diagrams.

[0184] Please refer to Figure 21 , Figure 21 , which is a simulation diagram of the first antenna in the antenna assembly provided by an embodiment of the present application. In this simulation diagram, the abscissa is frequency, with the unit of GHz, and the ordinate is the S parameter (S Parameter), with the unit of dB. It can be seen from this simulation diagram that the first antenna 120 can support the LB frequency band and the UHB frequency band.

[0185] Please refer toFigure 22 , Figure 22 This is a simulation schematic diagram of the second antenna in the antenna assembly provided by an embodiment of the present application. This simulation schematic diagram is based on the second antenna 130 including a second feed source S2 and a third feed source S3 for simulation. In this simulation diagram, the abscissa is frequency, with the unit of GHz, and the ordinate is the S parameter (S Parameter), with the unit of dB. Among them, curve ① represents the simulation curve of the second antenna 130 supporting the first target frequency band under the excitation of the second feed source S2. Curve ② is the simulation curve of the second antenna 130 supporting the third target frequency band under the excitation of the third feed source S3; curve ③ represents the isolation degree when the second antenna 130 supports the first target frequency band and the third target frequency band. As can be seen from curve ①, the first target frequency band supported by the second antenna 130 is a low-frequency band. As can be seen from curve ②, the third target frequency bands supported by the second antenna 130 are the WiFi 2.4G frequency band and the WiFi 5G frequency band. As can be seen from curve ③, the second antenna 130 has a good isolation degree when supporting the first target frequency band and the third target frequency band.

[0186] Please refer to Figure 23 , Figure 23 This is an efficiency schematic diagram of the second antenna in the antenna assembly provided by an embodiment of the present application when supporting the first target frequency band. Among them, the abscissa is frequency, with the unit of GHz, and the ordinate is efficiency, with the unit of dB. Curve ① is the system radiation efficiency (System Rad. Efficiency) curve of the second antenna 130 in the antenna assembly 10 when supporting the first target frequency band, and curve ② is the system total efficiency (System Tot. Efficiency) curve of the second antenna 130 in the antenna assembly 10 when supporting the first target frequency band. Among them, taking the first target frequency band as the LB frequency band as an example for simulation. As can be seen from this schematic diagram, the second antenna 130 has a good system radiation efficiency and a good system total efficiency when supporting the first target frequency band.

[0187] Please refer to Figure 24 , Figure 24Schematic diagram of the efficiency of the second antenna in the antenna assembly provided by an embodiment of the present application when supporting a third target frequency band. Wherein, the abscissa is frequency, with the unit of GHz, and the ordinate is efficiency, with the unit of dB. Curve ① is the system radiation efficiency (System Rad. Efficiency) curve of the second antenna 130 in the antenna assembly 10 when supporting the third target frequency band, and curve ② is the system total efficiency (System Tot. Efficiency) curve of the second antenna 130 in the antenna assembly 10 when supporting the third target frequency band. Among them, taking the third target frequency band as the LB frequency band as an example for simulation. It can be seen from this schematic diagram that the second antenna 130 has good system radiation efficiency and good system total efficiency when supporting the third target frequency band.

[0188] In addition, please refer to again Figure 1 and Figure 2 In an embodiment, the electronic device 1 further includes a display screen 50, a middle frame 40, and a housing 60. The display screen 50 and the housing 60 are respectively disposed on two opposite sides of the middle frame 40, and the housing 60 cooperates with the middle frame 40 to form a receiving space. The antenna assembly 10 can be disposed in the receiving space. Alternatively, the first radiator 121 of the first antenna 120 and the second radiator 131 of the second antenna 130 of the antenna assembly 10 are formed on the border of the middle frame 40. The radiators of other antennas of the antenna assembly 10 can also be formed on the border of the middle frame 40.

[0189] In addition, in an embodiment, the electronic device 1 further includes functional devices disposed in the receiving space (the functional devices may include one or more of a camera module, a microphone, a receiver, a speaker, a face recognition module, a fingerprint recognition module, etc.) that can implement the basic functions of a mobile phone, which will not be elaborated in this embodiment. It can be understood that the above introduction to the electronic device 1 is only an illustration of an environment in which the antenna assembly 10 is applied, and the specific structure of the electronic device 1 should not be construed as a limitation to the antenna assembly 10 provided by the present application.

[0190] The above are some embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present application.

Claims

1. An antenna assembly, characterized in that, the antenna assembly includes: a floor having a main board setting area and a battery setting area arranged along a preset direction, the main board setting area is used for setting a main board, the battery setting area is used for setting a battery, and the main board setting area of the floor has a first current weak point area and a second current weak point area of characteristic mode current; a first antenna including a first radiator and a first feeder, the first radiator is spaced from the floor, the first radiator has a first open end, a first feeding point and a second open end, the orthographic projection of the first feeding point on the floor is located in the first current weak point area, and the first feeder is electrically connected to the first feeding point so that the first antenna supports a first target frequency band; and a second antenna including a second radiator and a second feeder, the second radiator is spaced from the floor, the second radiator has a third open end, a second feeding point and a fourth open end, the orthographic projection of the second feeding point on the floor is located in the second current weak point area, and the second feeder is electrically connected to the second feeding point so that the second antenna supports the first target frequency band, wherein the first target frequency band is the LB frequency band, and the positions of the first radiator and the second radiator correspond to the main board setting area.

2. The antenna assembly according to claim 1, characterized in that, the antenna assembly further includes: a third antenna for supporting a second target frequency band, wherein the third antenna includes a third radiator, the position of the third radiator corresponds to the main board setting area, and the third radiator is closer to the battery setting area than the first radiator.

3. The antenna assembly according to claim 2, characterized in that, the floor includes a first side and a second side connected by bending, the side length of the second side is less than the side length of the first side; the first radiator includes a first radiation part and a second radiation part connected by bending, the first radiation part corresponds to the first side, the second radiation part corresponds to the second side, and the third radiator is arranged on the side of the first radiation part away from the second radiation part.

4. The antenna assembly according to claim 1, characterized in that, both the first antenna and the second antenna support a first frequency band and a second frequency band of the first target frequency band, the first antenna is used for supporting one of transmission and reception of the first frequency band, and the second antenna is used for supporting the other of transmission and reception of the first frequency band to achieve ENDC of the first frequency band; or, the first antenna is used for supporting one of transmission and reception of the second frequency band, and the second antenna is used for supporting the other of transmission and reception of the second frequency band to achieve ENDC of the second frequency band.

5. The antenna assembly according to claim 4, characterized in that, the first frequency band is the N28 frequency band, the second frequency band is the B20 frequency band, and the first antenna and the second antenna cooperate to achieve ENDC of the N28 frequency band and the B20 frequency band.

6. The antenna assembly according to claim 1, characterized in that, The second antenna further includes a third feeder, which is electrically connected to the second feeding point, so that the second antenna further supports a third target frequency band, where the third target frequency band includes a WiFi frequency band or an HB frequency band, and the WiFi frequency band includes a WiFi 2.4G frequency band and a WiFi 5G frequency band.

7. The antenna assembly according to claim 1, wherein, the first feeder is configured to feed an excitation signal supporting a first target frequency band to the first feeding point to enable the first antenna to support the first target frequency band, and the first feeder further feeds an excitation signal supporting a second target frequency band to the first feeding point to enable the first antenna to also support the second target frequency band, where the frequency of the second target frequency band is greater than that of the first target frequency band, and the second target frequency band includes a UHB frequency band.

8. The antenna assembly according to claim 1, wherein, the antenna assembly further includes: a fourth antenna configured to support the first target frequency band, where the fourth antenna includes a fourth radiator and a switching circuit, and the switching circuit is electrically connected to the fourth radiator and is configured to make the fourth antenna support different sub-bands in the first target frequency band according to preset different switching parameters.

9. The antenna assembly according to claim 1, wherein, the ground plane includes two first sides arranged opposite to each other and second sides respectively bent and connected to the two first sides, where the length of the second sides is less than that of the first sides; wherein, the first current weak point area is located within a square area with the intersection of the extension line of one of the two first sides and the extension line of one of the two second sides as the vertex and with a side length of 1 / 16 of the wavelength of the first target frequency band, and the second current weak point area is located within a square area with the intersection of the extension line of the other of the two first sides and the extension line of one of the two second sides as the vertex and with a side length of 1 / 16 of the wavelength of the first target frequency band; or, the first current weak point area is located within an area with the intersection of the extension line of one of the two first sides and the extension line of one of the two second sides as the center and with a radius of 1 / 16 of the wavelength of the first target frequency band, and the second current weak point area is located within an area with the intersection of the extension line of the other of the two first sides and the extension line of one of the two second sides as the center and with a radius of 1 / 16 of the wavelength of the first target frequency band.

10. The antenna assembly according to claim 1, wherein, the first antenna includes: The first inductive device, one end of the first inductive device is electrically connected to the first feed source, and the other end of the first inductive device is electrically connected to the first feeding point; the electrical length of the first radiator Satisfies: Where λ 1 Is the wavelength of the electromagnetic wave signal in the first target frequency band.

11. The antenna assembly according to claim 1, wherein, the second antenna includes: A second inductive device, one end of the second inductive device is electrically connected to the second feed source, and the other end of the second inductive device is electrically connected to the second feeding point; the electrical length of the second radiator satisfies: where λ 1 is the wavelength of the electromagnetic wave signal in the first target frequency band.

12. The antenna assembly according to claim 2, wherein, the antenna assembly further includes: a fifth antenna having a fifth radiator, the position of the fifth radiator corresponding to the main board setting area, and the fifth antenna is configured to support the second target frequency band, the fourth target frequency band, and the fifth target frequency band; or, The sixth antenna, the sixth antenna having a sixth radiator, the position of the sixth radiator corresponding to the main board setting area, the sixth antenna being used to support the second target frequency band and the sixth target frequency band.

13. The antenna assembly according to claim 12, wherein, the third antenna is further used to support a fourth target frequency band; the antenna assembly further comprises: a seventh antenna, the seventh antenna having a seventh radiator, the position of the seventh radiator corresponding to the main board setting area, the seventh antenna being used to support the fourth target frequency band; or, an eighth antenna, the eighth antenna having an eighth radiator, the position of the eighth radiator corresponding to the battery setting area, the eighth antenna being used to support the fourth target frequency band.

14. The antenna assembly according to claim 6, wherein, the antenna assembly further comprises: a ninth antenna, the ninth antenna including a ninth radiator, the position of the ninth radiator corresponding to the main board setting area, the ninth antenna being used to support the third target frequency band.

15. An electronic device, wherein, the electronic device comprises: the antenna assembly according to any one of claims 1-14; a main board, the main board being disposed in the main board setting area of the floor of the antenna assembly; and a battery, the battery being disposed in the battery setting area of the floor of the antenna assembly.

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