Antenna assembly and electronic equipment

Abstract

The invention provides an antenna assembly and electronic equipment. The antenna assembly comprises a first radiator, a second radiator, a tuning switch, a first feed source and a second feed source. The first radiating body is provided with a first end, a connecting point, a first feeding point and a second end which are arranged in sequence; the connection point is grounded through the tuning switch; the first feed source is electrically connected to the first feed point to excite the first radiator to support a first frequency band; the second radiating body comprises a first radiating part, the first radiating part comprises a third end, a second feeding point and a grounding point which are arranged in sequence, the second radiating body is coupled with the first radiating body, and the grounding point is grounded; the second feed source is electrically connected to the second feeding point; when the tuning switch is in a closed state, the second feed source excites the first resonance mode of the first radiation part and the first radiation body to support a second frequency band and has a first directional diagram; when the tuning switch is in an off state, the second feed source excites a second resonance mode of the first radiation part and the first radiation body to support a second frequency band and has a second directional diagram.

Description

Technical Field

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

[0002] With the development of technology, electronic devices with communication functions such as mobile phones are becoming more and more popular and their functions are becoming more and more powerful. Electronic devices usually include antennas to realize the communication function of electronic devices. However, the communication performance of antennas in electronic devices in the related art is not good enough and there is still room for improvement. Summary of the invention

[0003] In a first aspect, an embodiment of the present application provides an antenna assembly, the antenna assembly comprising:

[0004] A first radiator, the first radiator having a first end, a connection point, a first feeding point and a second end arranged in sequence;

[0005] A tuning switch, one end of which is electrically connected to the connection point and the other end is grounded, and the tuning switch has a closed state and an open state;

[0006] A first feed source, the first feed source being electrically connected to the first feed point and used to excite the first radiator to support a first frequency band;

[0007] A second radiator, the second radiator includes a first radiating portion, the first radiating portion includes a third end, a second feeding point and a grounding point which are arranged in sequence, the third end is spaced apart from the second end and has a coupling gap, the second radiator is coupled to the first radiator through the coupling gap, and the grounding point is grounded; and

[0008] a second feed source electrically connected to the second feed point;

[0009] Wherein, when the tuning switch is in a closed state, the second feed source excites the first resonance mode of the first radiating portion and the first radiator to support a second frequency band and has a first directivity diagram, wherein the frequency of the second frequency band is greater than the frequency of the first frequency band;

[0010] When the tuning switch is in an off state, the second feed source excites the second resonance mode of the first radiation portion and the first radiator to support a second frequency band and has a second directivity pattern, wherein the first directivity pattern is different from the second directivity pattern.

[0011] In a second aspect, an embodiment of the present application provides an electronic device, and the electronic device includes the antenna assembly as described in the first aspect.

[0012] In summary, in the antenna assembly provided by the embodiment of the present application, the first feed source excites the first radiator to support the first frequency band, and can realize the communication function of the first frequency band. The first radiating part is coupled with the first radiator through a coupling gap, and the second feed source excites the first radiating part and the first radiator to jointly support the second frequency band to realize the communication function of the second frequency band. In addition, when the tuning switch is in a closed state, the first radiating part and the first radiator jointly support the second frequency band and have a first directional pattern; when the tuning switch is in an open state, the first radiating part and the first radiator jointly support the second frequency band and have a second directional pattern, and the second directional pattern is different from the first directional pattern. It can be seen that the antenna assembly provided by the embodiment of the present application can control the state of the tuning switch so that the antenna assembly has different directional patterns when supporting the second frequency band, thereby realizing the reconfigurable directional pattern when the antenna assembly supports the second frequency band. Therefore, when the antenna assembly communicates with other devices in the second frequency band, the state of the tuning switch can be controlled to realize the selection of the directional pattern when the antenna assembly supports the second frequency band, thereby improving the communication experience when the antenna assembly supports the second frequency band. It can be seen that the antenna assembly provided in the embodiment of the present application has a good communication effect in the second frequency band. In addition, when the antenna assembly provided in the embodiment of the present application supports the second frequency band, not only the first radiating part but also the first radiator can be used, so that the size of the first radiating part is small, which is conducive to saving the volume of the antenna assembly. When the antenna assembly is used in an electronic device, it is convenient to layout with other devices in the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 A schematic diagram of an antenna assembly provided in one embodiment of the present application;

[0015] Figure 2 for Figure 1 The current distribution diagram of the antenna assembly shown in the first resonance mode;

[0016] Figure 3 for Figure 1 A schematic diagram showing a first directional pattern of the antenna assembly supporting a second frequency band;

[0017] Figure 4 for Figure 1 A current distribution diagram of the antenna assembly shown in the second resonance mode;

[0018] Figure 5 for Figure 1 A schematic diagram showing that the antenna assembly supports a second directional pattern in a second frequency band;

[0019] Figure 6 for Figure 1 The current distribution diagram of the antenna assembly shown in the third resonance mode;

[0020] Figure 7 for Figure 1 The antenna assembly shown is a schematic diagram of a third directional diagram supporting a third frequency band;

[0021] Figure 8 for Figure 1 The current distribution diagram of the antenna assembly shown in the fourth resonance mode;

[0022] Fig. 9 for Figure 1 A schematic diagram of the antenna assembly shown supporting a fourth directional pattern of a third frequency band;

[0023] Fig.10 for Figure 1 The current distribution diagram of the antenna assembly shown in FIG. 1 in the fifth resonance mode;

[0024] Fig.11 for Figure 1 A schematic diagram of a fifth directional pattern of the antenna assembly supporting the first frequency band is shown;

[0025] Fig.12 for Figure 1 The current distribution diagram of the line assembly shown in FIG. 1 at the sixth resonance mode;

[0026] Fig.13 for Figure 1 A schematic diagram of a sixth directional pattern of the antenna assembly supporting the first frequency band is shown;

[0027] Fig.14 A schematic diagram of an antenna assembly provided in yet another embodiment of the present application;

[0028] Fig.15 A schematic diagram of an antenna assembly provided in another embodiment of the present application;

[0029] Fig.16 for Fig.15 A schematic diagram of current distribution when the antenna assembly supports the fourth frequency band;

[0030] Fig.17 A schematic diagram of an antenna assembly provided in one embodiment of the present application;

[0031] Fig.18 for Fig.17 A schematic diagram of performance simulation of the provided antenna assembly when supporting the first frequency band;

[0032] Fig.19 It is a performance diagram of the antenna assembly without distributed capacitance and with distributed capacitance;

[0033] Fig. 20 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application;

[0034] Fig.21 A schematic diagram of a portion of the structure of an antenna assembly provided in one embodiment of the present application applied to an electronic device;

[0035] Fig. 22 For the corresponding Fig.21 Schematic diagram of the model;

[0036] Fig.23 A schematic diagram of the circuit structure of an electronic device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0037] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, not all of the embodiments. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present application.

[0038] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0039] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example: a component or device including one or more parts is not limited to the one or more parts listed, but optionally includes one or more parts that are not listed but inherent to the exemplified product, or one or more parts that it should have based on the described function.

[0040] See also Figure 1 , Figure 1A schematic diagram of an antenna assembly provided in one embodiment of the present application. The antenna assembly 10 includes a first radiator 110, a tuning switch 130, a first feed source S1, a second radiator 120 and a second feed source S2. The first radiator 110 has a first end 111, a connection point G1, a first feed point P1 and a second end 112 arranged in sequence. One end of the tuning switch 130 is electrically connected to the connection point G1, and the other end is grounded. The tuning switch 130 has a closed state and an open state. The first feed source S1 is electrically connected to the first feed point P1, and is used to excite the first radiator 110 to support the first frequency band. The second radiator 120 includes a first radiating portion 121. The first radiating portion 121 includes a third end 1211, a second feed point P2 and a grounding point G2 arranged in sequence. The third end 1211 is spaced apart from the second end 112 and has a coupling gap 121a. The second radiator 120 is coupled to the first radiator 110 through the coupling slot 121a, and the grounding point G2 is grounded. The second feed source S2 is electrically connected to the second feeding point P2. When the tuning switch 130 is in a closed state, the second feed source S2 excites the first resonance mode of the first radiating portion 121 and the first radiator 110 to support a second frequency band, and has a first directivity diagram, wherein the frequency of the second frequency band is greater than the frequency of the first frequency band. When the tuning switch 130 is in an open state, the second feed source S2 excites the second resonance mode of the first radiating portion 121 and the first radiator 110 to support a second frequency band, and has a second directivity diagram, wherein the first directivity diagram is different from the second directivity diagram.

[0041] Since the first radiator 110 includes a first end 111 and a second end 112, the first radiator 110 is also called a double-opening radiator or a double-opening branch. The first radiator 110 may be a laser direct structuring (LDS) radiator, or a flexible printed circuit (FPC) radiator, or a print direct structuring (PDS) radiator, or a metal branch radiator. When the antenna 10 is applied to an electronic device 1, the first radiator 110 may be a laser direct structuring (LDS) radiator, or a flexible printed circuit (FPC) radiator, or a print direct structuring (PDS) radiator, or a metal branch radiator. Figure 20 to Figure 21 ) A mechanical design antenna (MDA) radiator with its own metal insert. For example, the first radiator 110 can be an antenna radiator designed using the middle frame 30 formed of plastic and metal of the electronic device 1. In addition, the first radiator 110 can also be a metal frame radiator designed using the metal middle frame 30.

[0042] One end of the tuning switch 130 is electrically connected to the connection point G1, and the other end is grounded. When the tuning switch 130 is in a closed state, the tuning switch 130 is turned on, and the connection point G1 of the first radiator 110 is electrically connected to the ground through the tuning switch 130. The tuning switch 130 has an open state. When the tuning switch 130 is in the open state, the connection point G1 of the first radiator 110 is disconnected from the ground. The ground may include but is not limited to the electronic device 1 (see Figure 20 to Figure 21 ) the frame body 310 of the middle frame 30, or the ground of the circuit board of the electronic device 1, or the shielding part of the display screen of the electronic device 1, or the conductive back cover of the electronic device 1, etc.

[0043] The first feed source S1 may be electrically connected to the first feed point P1 through an electrical connector (eg, a conductive screw, conductive glue, conductive spring, conductive connecting rib, etc.) The specific frequency band of the first frequency band will be described in detail later.

[0044] Since the first radiating portion 121 includes a third end 1211 and a grounding point G2, the first radiating portion 121 is also called a single-opening branch or a single-opening radiating portion. The first radiating portion 121 may be a laser direct structuring (LDS) radiator, or a flexible printed circuit (FPC) radiator, or a print direct structuring (PDS) radiator, or a metal branch radiator. When the antenna 10 is applied to an electronic device 1, the first radiating portion 121 may be a laser direct structuring (LDS) radiator. Figure 20 to Figure 21 ) A mechanical design antenna (MDA) radiator with its own metal insert. For example, the first radiating portion 121 can be an antenna radiator designed using the middle frame 30 formed of plastic and metal of the electronic device 1. In addition, the first radiating portion 121 can also be a metal frame radiator designed using a metal middle frame 30. The type of the first radiating portion 121 can be the same as or different from the type of the first radiator 110, which is not limited here.

[0045] The grounding method of the grounding point G2 may be, but is not limited to, being electrically connected to the ground electrode through a grounding member (e.g., a conductive screw, or conductive glue, or a conductive spring, or a conductive connecting rib, etc.). The second feed source S2 may be electrically connected to the second feeding point P2 through an electrical connector (e.g., a conductive screw, or conductive glue, or a conductive spring, or a conductive connecting rib, etc.).

[0046] When the tuning switch 130 is in a closed state, the second feed source S2 excites the first resonance mode of the first radiating portion 121 and the first radiator 110 to support the second frequency band. In other words, when the tuning switch 130 is in a closed state, the second feed source S2 uses the first radiating portion 121 and the first radiator 110 to jointly support the first resonance mode to support the second frequency band. It can be seen that when the tuning switch 130 is in a closed state, the first radiating portion 121 serves as a main radiation branch (also called a main radiator) supporting the second frequency band; the first radiator 110 is coupled to the first radiating portion 121 through the coupling slot 121a, and the first radiator 110 serves as a parasitic branch (also called a parasitic radiator) supporting the second frequency band. When the tuning switch 130 is in the closed state, the antenna assembly 10 provided in the embodiment of the present application can not only use the first radiating portion 121 but also use the first radiator 110 to support the second frequency band. Compared with using only one radiator to support the second frequency band, the first radiating portion 121 of the antenna assembly 10 provided in the embodiment of the present application can be designed to be shorter, thereby making the volume of the antenna assembly 10 smaller. When the tuning switch 130 is in the closed state, the first directional pattern of the second frequency band will be described later in conjunction with the simulation diagram.

[0047] It should be noted that when the connection point G1 is grounded through a small inductor, for the second frequency band, it is equivalent to the connection point G1 being grounded through the tuning switch 130, and the tuning switch 130 is in an on state. In other words, for the second frequency band, the tuning switch 130 is in a closed state, including: the connection point G1 is electrically connected to the tuning switch 130 to the ground and the tuning switch 130 itself is in a closed state; or, the connection point G1 is grounded through a small inductor.

[0048] When the tuning switch 130 is in the off state, the second feed source S2 excites the second resonance mode of the first radiating portion 121 and the first radiator 110 to support the second frequency band. In other words, when the tuning switch 130 is in the off state, the second feed source S2 uses the first radiating portion 121 and the first radiator 110 to jointly support the second resonance mode to support the second frequency band. It can be seen that when the tuning switch 130 is in the off state, the first radiating portion 121 serves as a main radiation branch (also called a main radiator) supporting the second frequency band; the first radiator 110 is coupled to the first radiating portion 121 through the coupling gap 121a, and the first radiator 110 serves as a parasitic branch (also called a parasitic radiator) supporting the second frequency band. When the tuning switch 130 is in the off state, the antenna assembly 10 provided in the embodiment of the present application can use not only the first radiating portion 121 but also the first radiator 110 to support the second frequency band. Compared with using only one radiator to support the second frequency band, the first radiating portion 121 of the antenna assembly 10 provided in the embodiment of the present application can be designed to be shorter, thereby making the volume of the antenna assembly 10 smaller. When the tuning switch 130 is in the off state, the second directional pattern of the second frequency band will be described later in conjunction with the simulation diagram.

[0049] It should be noted that when the connection point G1 is grounded through a small capacitor, for the second frequency band, it is equivalent to the connection point G1 being grounded through the tuning switch 130, and the tuning switch 130 is in an off state. In other words, for the second frequency band, the connection point G1 is grounded through the tuning switch 130 and the tuning switch 130 is off, including: the connection point G1 is electrically connected to the tuning switch 130 to the ground and the tuning switch 130 itself is in an off state; or, the connection point G1 is grounded through a small capacitor.

[0050] In summary, in the antenna assembly 10 provided in the embodiment of the present application, the first feed source S1 excites the first radiator 110 to support the first frequency band, and can realize the communication function of the first frequency band. The first radiating portion 121 is coupled with the first radiator 110 through the coupling slot 121a, and the second feed source S2 excites the first radiating portion 121 and the first radiator 110 to jointly support the second frequency band to realize the communication function of the second frequency band. In addition, when the tuning switch 130 is in a closed state, the first radiating portion 121 and the first radiator 110 jointly support the second frequency band and have a first directional pattern; when the tuning switch 130 is in an open state, the first radiating portion 121 and the first radiator 110 jointly support the second frequency band and have a second directional pattern, and the second directional pattern is different from the first directional pattern. It can be seen that the antenna assembly 10 provided in the embodiment of the present application can control the state of the tuning switch 130 so that the antenna assembly 10 has different directional patterns when supporting the second frequency band, thereby realizing that the directional pattern of the antenna assembly 10 when supporting the second frequency band can be reconfigured. Therefore, when the antenna assembly 10 communicates with other devices in the second frequency band, the state of the tuning switch 130 can be controlled to achieve the selection of the directional pattern in the second frequency band supported by the antenna assembly 10, thereby improving the communication experience when the antenna assembly 10 supports the second frequency band. It can be seen that the antenna assembly 10 provided in the embodiment of the present application has a good communication effect in the second frequency band. In addition, when the antenna assembly 10 provided in the embodiment of the present application supports the second frequency band, not only the first radiating portion 121 but also the first radiator 110 can be used, so that the size of the first radiating portion 121 is smaller, which is beneficial to saving the volume of the antenna assembly 10. When the antenna assembly 10 is applied to the electronic device 1, it is convenient to layout with other devices in the electronic device 1.

[0051] Please also read Figure 1 , Figure 2 and Figure 3 , Figure 2 for Figure 1 The current distribution diagram of the antenna assembly shown in the first resonance mode; Figure 3 for Figure 1 The antenna assembly shown is a schematic diagram of a first directional pattern supporting a second frequency band. For the convenience of illustration, Figure 2 (a) is a color image;

[0052] Figure 2 (b) in Figure 2 Grayscale image of (a) in ; Figure 3 (a) is a color image; Figure 3 (b) in Figure 3The grayscale image of (a) in FIG. The first resonant mode has a first resonant current I1 distributed in the first radiation portion 121 and the first radiator 110. The first resonant current I1 has two first current intensity points and two first current zero points O1, the two first current intensity points are respectively located at the first end 111 and the second end 112, the two first current zero points O1 are spaced between the two first current intensity points, and the directions of the currents of the first resonant current I1 between the two first current zero points O1 are the same.

[0053] For the convenience of description, the resonant current corresponding to the first resonant mode is named as the first resonant current I1. The first resonant mode is also called the odd mode supporting the second frequency band; accordingly, the first resonant current I1 is also called the odd mode current of the second frequency band. When the antenna assembly 10 is in the first resonant mode, the second feed source S2 excites the first radiating portion 121 and the first radiator 110 to work. Specifically, the first radiating portion 121 serves as a main radiating branch (also called a main radiator) supporting the second frequency band, and the first radiator 110 serves as a parasitic radiating branch (also called a parasitic radiator) supporting the second frequency band. The resonant current of the first radiator 110 has a greater influence on the first radiation pattern of the second frequency band.

[0054] In this embodiment, the first resonant current I1 has two current strong points and two current zero points. The current strong point of the first resonant current I1 is named the first current strong point, and the current zero point of the first resonant current I1 is named the first current zero point O1. The two first current strong points are respectively located at the first end 111 and the second end 112. The two first current zero points O1 are spaced between the two first current strong points, and the directions of the currents of the first resonant current I1 located between the two first current zero points O1 are the same. In other words, the currents of the first resonant current I1 located between the two first current zero points O1 are distributed in the same direction. The above distribution of the first resonant current I1, therefore, generates a directional diagram toward the normal direction of the first radiator 110. In other words, the first directional diagram of the second frequency band is toward the normal direction of the first radiator 110.

[0055] The first resonance current I1 corresponding to the first resonance mode is full wavelength, and the first resonance current I1 is mainly located in the middle of the first radiator 110. Therefore, the first directivity pattern corresponding to the first resonance mode is more perpendicular to the extension direction of the first radiator 110 and more concentrated.

[0056] It can be seen that, for the antenna assembly 10 provided in the embodiment of the present application, the main lobe of the first radiation pattern when the first resonance mode supports the second frequency band is directed perpendicular to or approximately perpendicular to the extension direction of the first radiator 110, and the energy is relatively concentrated. Therefore, when the antenna assembly 10 provided in the embodiment of the present application operates in the second frequency band, if the tuning switch 130 is in a closed state, the antenna assembly 10 has good communication performance in a direction perpendicular to or approximately perpendicular to the extension direction of the first radiator 110.

[0057] In addition, it should be noted that Figure 2 In the current half-wavelength period shown, the first resonant current I1 is located between the two first current zero points O1 and flows from the first current zero point O1 adjacent to the second end 112 to the first current zero point O1 adjacent to the first end 111. It can be understood that the first resonant current I1 changes periodically. In the next half-wavelength period, the first resonant current I1 changes periodically compared to the first resonant current I1. Figure 2 The first resonant current I1 of the half-wavelength period shown in the figure is reversed; specifically, in the next half-wavelength period, the first resonant current I1 located between the two first current zero points O1 flows from the first current zero point O1 adjacent to the first end 111 to the first current zero point O1 adjacent to the second end 112. It can be understood that in the following schematic diagrams of each resonant current, schematic diagrams of each resonant current in the current half-wavelength period are shown; in the next half-wavelength period, the direction of the same resonant current is reversed compared to the flow direction of the resonant current in the current half-wavelength period.

[0058] Please also read Figure 1 , Figure 4 and Figure 5 , Figure 4 for Figure 1 A current distribution diagram of the antenna assembly shown in the second resonance mode; Figure 5 for Figure 1 The antenna assembly shown is a schematic diagram of a second directional pattern supporting a second frequency band. For the convenience of illustration, Figure 4 (a) is a color image;

[0059] Figure 4 (b) in Figure 4 Grayscale image of (a) in ; Figure 5 (a) is a color image; Figure 5 (b) in Figure 5Grayscale image of (a) in FIG. In this embodiment, the second resonance mode has a second resonance current I2 distributed in the first radiation portion 121 and the first radiator 110. The second resonance current I2 has two second current intensity points and a second current zero point O2. The two second current intensity points are respectively located at the first end 111 and the second end 112, the second current zero point O2 is located between the two first current intensity points, and the second resonance current I2 is located between the first end 111 and the second current zero point O2, and the direction is opposite to the current located between the second current zero point O2 and the second end 112.

[0060] For the convenience of description, the resonant current corresponding to the second resonant mode is named as the second resonant current I2. The second resonant mode is also called the even mode supporting the second frequency band; accordingly, the second resonant current is also called the even mode current of the second frequency band. When the antenna assembly 10 is in the second resonant mode, the second feed source S2 excites the first radiating portion 121 and the first radiator 110 to work. Specifically, the first radiating portion 121 serves as the main radiating branch (also called the main radiator) of the second frequency band, and the first radiator 110 serves as a parasitic radiating branch (also called a parasitic radiator) supporting the second frequency band. The resonant current of the first radiator 110 has a greater influence on the second radiation pattern of the second frequency band.

[0061] In this embodiment, the second resonant current I2 has two current strong points and one current zero point. The current strong point of the second resonant current I2 is named the second current strong point, and the current zero point of the second resonant current I2 is named the second current zero point O2. The two second current strong points are located at the first end 111 and the second end 112, respectively. The second current zero point O2 is located between the two second current strong points, and the second current zero point O2 is spaced from the two second current strong points, respectively. The current of the second resonant current I2 between the first end 111 and the second current zero point O2 is opposite in direction to the current between the second current zero point O2 and the second end 112. In other words, the second resonant current I2 is reversed at the second current zero point O2. The second directivity pattern generated by the second resonant current I2, the normal direction of the first radiator 110 is the zero point of the second directivity pattern, the main lobe of the second directivity pattern points to the direction of the first radiator 110 pointing to the first radiating portion 121, or approximately the direction of the first radiator 110 pointing to the first radiating portion 121; and the main lobe of the second directivity pattern points to the direction of the first radiating portion 121 pointing to the first radiator 110, or approximately the direction of the first radiating portion 121 pointing to the first radiator 110. When the antenna assembly 10 is applied to an electronic device 1, if the first radiating portion 121 and the first radiator 110 are both arranged corresponding to the long side of the electronic device 1, then the second directivity pattern is toward the top and bottom sides of the electronic device 1.

[0062] It can be seen that, for the antenna assembly 10 provided in the embodiment of the present application, when the second resonant mode supports the second frequency band, the main lobe of the second directional pattern points to the direction in which the first radiator 110 points to the first radiating portion 121, or approximately the direction in which the first radiator 110 points to the first radiating portion 121; and the main lobe of the second directional pattern points to the direction in which the first radiating portion 121 points to the first radiator 110, or approximately the direction in which the first radiating portion 121 points to the first radiator 110. Therefore, when the antenna assembly 10 provided in the embodiment of the present application works in the second frequency band, if the tuning switch 130 is in the off state, the antenna assembly 10 has good communication performance when the first radiator 110 points to the first radiating portion 121, or approximately the direction in which the first radiator 110 points to the first radiating portion 121; and the main lobe of the second directional pattern points to the direction in which the first radiating portion 121 points to the first radiator 110, or approximately the direction in which the first radiating portion 121 points to the first radiator 110.

[0063] In addition, the second directional pattern is different from the first directional pattern. Judging from the first directional pattern and the second directional pattern, the area with a weaker signal in the first directional pattern will be covered by the area with a stronger signal in the second directional pattern; correspondingly, the area with a weaker signal in the second directional pattern will be covered by the area with a stronger signal in the first directional pattern. It can be seen that by adjusting the state of the tuning switch 130, the antenna assembly 10 can have a better communication effect in the second frequency band, thereby improving the communication experience when the antenna assembly 10 supports the second frequency band. It can be seen that the antenna assembly 10 provided in the embodiment of the present application has a better communication effect in the second frequency band.

[0064] Please also read Figure 1 , Figure 6 and Figure 7 , Figure 6 for Figure 1 The current distribution diagram of the antenna assembly shown in the third resonance mode; Figure 7 for Figure 1 The antenna assembly shown is a schematic diagram of a third directional diagram supporting a third frequency band. For the convenience of illustration, Figure 6 (a) is a color image; Figure 6 (b) in Figure 6 Grayscale image of (a) in ; Figure 7 (a) is a color image; Figure 7 (b) in Figure 7 Grayscale image of (a) in . When the tuning switch 130 is in an open state, the second feed source S2 also excites the third resonance mode of the first radiating portion 121 and the first radiator 110 to support a third frequency band, and has a third directional diagram. The frequency of the third frequency band is greater than the frequency of the first frequency band, and the frequency of the third frequency band is less than the frequency of the second frequency band. When the tuning switch 130 is in a closed state, the second feed source S2 excites the fourth resonance mode of the first radiating portion 121 and the first radiator 110 to support a third frequency band, and has a fourth directional diagram, wherein the third directional diagram is different from the fourth directional diagram.

[0065] For the convenience of description, the resonant current corresponding to the third resonant mode is named as the third resonant current I3. The third resonant mode is also called the odd mode supporting the third frequency band; accordingly, the third resonant current I3 is also called the odd mode current of the third frequency band. When the antenna assembly 10 is in the third resonant mode, the second feed source S2 excites the first radiating portion 121 and the first radiator 110 to work. Specifically, the first radiating portion 121 serves as a main radiating branch (also called a main radiator) supporting the third frequency band, and the first radiator 110 serves as a parasitic radiating branch (also called a parasitic radiator) supporting the third frequency band. When the tuning switch 130 is in the off state, the antenna assembly 10 provided in the embodiment of the present application can not only use the first radiating portion 121 but also use the first radiator 110 to support the third frequency band. Compared with using only one radiator to support the third frequency band, the first radiating portion 121 provided in the embodiment of the present application can be designed to be shorter, so that the volume of the antenna assembly 10 is smaller. When the tuning switch 130 is in an off state, the third directional diagram of the third frequency band will be described later in conjunction with a simulation diagram.

[0066] It should be noted that when the connection point G1 is grounded through a large inductor, or when the connection point G1 is grounded through a small capacitor, for the second frequency band, it is equivalent to the connection point G1 being grounded through the tuning switch 130 and the tuning switch 130 being in an off state. In other words, for the third frequency band, the tuning switch 130 being in an off state includes: the connection point G1 is electrically connected to the tuning switch 130 to the ground and the tuning switch 130 itself is in an off state; or, the connection point G2 is grounded through a large inductor; or, the connection point G1 is grounded through a small capacitor.

[0067] See also Figure 1 , Figure 8 and Fig. 9 , Figure 8 for Figure 1 The current distribution diagram of the antenna assembly shown in the fourth resonance mode; Fig. 9 for Figure 1 The antenna assembly shown is a schematic diagram of a fourth directional pattern supporting a third frequency band. For the sake of convenience, Figure 8 (a) is a color image; Figure 8 (b) in Figure 8 Grayscale image of (a) in ; Fig. 9 (a) is a color image; Fig. 9 (b) in Fig. 9Grayscale image of (a) in FIG. For the convenience of description, the resonant current corresponding to the fourth resonant mode is named as the fourth resonant current I4. The fourth resonant mode is also called the even mode supporting the third frequency band; accordingly, the fourth resonant current I4 is also called the even mode current of the third frequency band. When the antenna assembly 10 is in the fourth resonant mode, the second feed source S2 excites the first radiating portion 121 and the first radiator 110 to work. Specifically, the first radiating portion 121 serves as a main radiating branch (also called a main radiator) supporting the third frequency band, and the first radiator 110 serves as a parasitic radiating branch (also called a parasitic radiator) supporting the third frequency band. When the tuning switch 130 is in the off state, the antenna assembly 10 provided in the embodiment of the present application can not only use the first radiating portion 121 but also use the first radiator 110 to support the third frequency band. Compared with using only one radiator to support the third frequency band, the first radiating portion 121 provided in the embodiment of the present application can be designed to be shorter, so that the volume of the antenna assembly 10 is smaller. When the tuning switch 130 is in a closed state, the fourth directional pattern of the third frequency band will be described later in conjunction with a simulation diagram.

[0068] It should be noted that when the connection point G1 is grounded through a small inductor, or the connection point G2 is grounded through a large capacitor, for the third frequency band, it can be equivalent to the connection point G1 being grounded through the tuning switch 130 and the tuning switch 130 being in a closed state. In other words, for the third frequency band, the connection point G1 is grounded through the tuning switch 130 and the tuning switch 130 is closed, including: the connection point G1 is electrically connected to the tuning switch 130 to the ground and the tuning switch 130 itself is in a closed state; or, the connection point G1 is grounded through a small inductor; or, the connection point G1 is grounded through a large capacitor.

[0069] In summary, the antenna assembly 10 provided in the embodiment of the present application can not only support the first frequency band and the second frequency band, but also support the third frequency band, and therefore can meet the communication functions of the first frequency band, the second frequency band and the third frequency band. When the tuning switch 130 is in an open state, the first radiating portion 121 and the first radiator 110 jointly support the third frequency band and have a third directional pattern; when the tuning switch 130 is in a closed state, the first radiating portion 121 and the first radiator 110 jointly support the second frequency band and have a fourth directional pattern, and the fourth directional pattern is different from the second directional pattern. It can be seen that the antenna assembly 10 provided in the embodiment of the present application can control the state of the tuning switch 130 so that the antenna assembly 10 has different directional patterns when supporting the third frequency band, thereby realizing that the directional pattern of the antenna assembly 10 when supporting the third frequency band can be reconfigured. Therefore, when the antenna assembly 10 communicates with other devices in the third frequency band, the state of the tuning switch 130 can be controlled to achieve the selection of the directional pattern of the third frequency band supported by the antenna assembly 10, thereby improving the communication experience of the antenna assembly 10 supporting the third frequency band. It can be seen that the antenna assembly 10 provided in the embodiment of the present application has a good communication effect in the third frequency band. In addition, when the antenna assembly 10 provided in the embodiment of the present application supports the third frequency band, not only the first radiating part 121 but also the first radiator 110 can be used, so that the size of the first radiating part 121 is smaller, which is conducive to saving the volume of the antenna assembly 10. When the antenna assembly 10 is applied to the electronic device 1, it is convenient to layout with other devices in the electronic device 1.

[0070] Please continue reading Figure 6 and Figure 7 , the third resonance mode has a third resonance current I3 distributed in the first radiation portion 121 and the first radiator 110. The third resonance current I3 has two third current zero points O3 disposed at intervals of the first radiator 110, and the direction of the third resonance current I3 between the two third current zero points O3 is the same.

[0071] As can be seen from the previous description, the resonant current corresponding to the third resonant mode is named the third resonant current I3. The third resonant mode is also called the odd mode supporting the third frequency band; accordingly, the third resonant current I3 is also called the odd mode current of the third frequency band. When the antenna assembly 10 is in the third resonant mode, the second feed source S2 excites the first radiating portion 121 and the first radiator 110 to work. Specifically, the first radiating portion 121 serves as a main radiating branch (also called a main radiator) supporting the third frequency band, and the first radiator 110 serves as a parasitic radiating branch (also called a parasitic radiator) supporting the third frequency band, and the resonant current of the first radiator 110 affects the third direction diagram of the third frequency band.

[0072] In this embodiment, the third resonant current I3 has two current zero points, wherein the current zero point of the third resonant current I3 is named as the third current zero point O3. The two third current zero points O3 are arranged at intervals. Specifically, in this embodiment, one of the two third current zero points O3 is adjacent to the first end 111, and the other of the two third current zero points O3 is adjacent to the second end 112. The current directions of the third resonant current I3 located between the two third current zero points O3 are the same. In other words, the currents of the third resonant current I3 located between the two third current zero points O3 are distributed in the same direction. Due to the above distribution of the third resonant current I3, a direction pattern that is normal to the first radiator 110 and has a certain deflection is generated. When the antenna assembly 10 is applied to the electronic device 1, if the first radiating portion 121 and the first radiator 110 are both arranged corresponding to the long side of the electronic device 1, the main lobe of the third direction pattern points to the junction of the long side and the top side (the upper right corner of the direction shown in the figure).

[0073] Please also read Figure 1 , Figure 8 and Fig. 9 In this embodiment, the fourth resonant mode has a fourth resonant current I4 distributed in the first radiation portion 121 and the first radiator 110, wherein the fourth resonant current I4 has a fourth current zero point O4 located on the first radiator 110, the fourth current zero point O4 is located between the first end 111 and the second end 112, and the fourth resonant current I4 is located between the first end 111 and the fourth current zero point O4, and the direction is opposite to the current between the fourth current zero point O4 and the second end 112.

[0074] As can be seen from the previous introduction, the resonant current corresponding to the fourth resonant mode is named the fourth resonant current I4. The fourth resonant mode is also called the even mode supporting the second frequency band; accordingly, the fourth resonant current I4 is also called the even mode current of the third frequency band. When the antenna assembly 10 is in the fourth resonant mode, the second feed source S2 excites the first radiating portion 121 and the first radiator 110 to work. Specifically, the first radiating portion 121 serves as the main radiating branch (also called the main radiator) of the third frequency band, and the first radiator 110 serves as a parasitic radiating branch (also called a parasitic radiator) supporting the third frequency band, and the resonant current of the first radiator 110 affects the fourth radiation pattern of the third frequency band.

[0075] In this embodiment, the fourth resonant current I4 has a current zero point. The current zero point of the fourth resonant current I4 is named as the fourth current zero point O4. The fourth current zero point O4 is located between the first end 111 and the second end 112. The fourth resonant current I4 is located between the first end 111 and the fourth current zero point O4, and the direction is opposite to the current located between the fourth current zero point O4 and the second end 112. In other words, the fourth resonant current I4 appears in the reverse direction at the fourth current zero point O4. The fourth directional pattern generated by the fourth resonant current I4, the normal direction of the first radiator 110 is the zero point of the fourth directional pattern. The main lobe of the fourth directional pattern points to the direction in which the first radiator 110 points to the first radiating portion 121, or approximately the direction in which the first radiator 110 points to the first radiating portion 121. When the antenna assembly 10 is applied to an electronic device 1, if the first radiating portion 121 and the first radiator 110 are both arranged corresponding to the long side of the electronic device 1, then the main lobe of the fourth radiation pattern points toward the bottom side of the electronic device 1 (the left side of the direction shown in the figure).

[0076] It can be seen that, for the antenna assembly 10 provided in the embodiment of the present application, the main lobe of the directional pattern when the fourth resonant mode supports the third frequency band points to the direction in which the first radiator 110 points to the first radiating portion 121, or approximately the direction in which the first radiator 110 points to the first radiating portion 121. Therefore, when the antenna assembly 10 provided in the embodiment of the present application operates in the third frequency band, if the tuning switch 130 is in a closed state, the antenna assembly 10 has good communication performance in the direction in which the first radiator 110 points to the first radiating portion 121, or approximately the direction in which the first radiator 110 points to the first radiating portion 121.

[0077] In addition, the fourth directional diagram is different from the third directional diagram. Judging from the third directional diagram and the fourth directional diagram, the area with weaker signal strength in the third directional diagram will be covered by the area with stronger signal strength in the fourth directional diagram; correspondingly, the area with weaker signal strength in the fourth directional diagram will be covered by the area with stronger signal strength in the third directional diagram. It can be seen that by adjusting the state of the tuning switch 130, the antenna assembly 10 can have a better communication effect in the third frequency band, thereby improving the communication experience when the antenna assembly 10 supports the third frequency band. It can be seen that the antenna assembly 10 provided in the embodiment of the present application has a better communication effect in the third frequency band.

[0078] Please also read Figure 1 , Fig.10 and Fig.11 , Fig.10 for Figure 1 The current distribution diagram of the antenna assembly shown in FIG. 1 in the fifth resonance mode; Fig.11 for Figure 1 The antenna assembly shown is a schematic diagram of a fifth directional pattern supporting a first frequency band. For the convenience of illustration, Fig.10 (a) is a color image;

[0079] Fig.10 (b) in Fig.10 Grayscale image of (a) in ; Fig.11 (a) is a color image; Fig.11 (b) in Fig.11 In one embodiment, when the tuning switch 130 is in an open state, the first feed source S1 excites the fifth resonant mode of the first radiator 110 to support the first frequency band and has a fifth directivity diagram. When the tuning switch 130 is in a closed state, the first feed source S1 excites the sixth resonant mode of the first radiator 110 to support the first frequency band and has a sixth directivity diagram, wherein the fifth directivity diagram is different from the sixth directivity diagram.

[0080] For the convenience of description, the resonant current corresponding to the fifth resonant mode is named as the fifth resonant current I5. The fifth resonant current I5 is also called the odd mode supporting the first frequency band; accordingly, the fifth resonant current I5 is also called the odd mode current of the first frequency band. In this embodiment, the fifth resonant mode is similar to the half-wavelength dipole mode, and therefore, the fifth resonant mode is also called the odd mode-half-wavelength dipole mode. When the tuning switch 130 is in the off state, the fifth directional diagram of the first frequency band will be introduced later in conjunction with the simulation diagram.

[0081] It should be noted that when the connection point G1 is grounded through a large inductor, or the connection point G1 is grounded through a small capacitor, for the first frequency band, it is equivalent to the connection point G1 being grounded through the tuning switch 130 and the tuning switch 130 being in an off state. In other words, for the first frequency band, the tuning switch 130 being in an off state includes: the connection point G1 is electrically connected to the tuning switch 130 to the ground and the tuning switch 130 itself is in an off state; or, the connection point G1 is grounded through a large inductor; or, the connection point G1 is grounded through a small capacitor.

[0082] In one embodiment, the large inductor in the antenna assembly 10 refers to an inductor with an inductance greater than or equal to 10 nH. In one embodiment, the small capacitor in the antenna assembly 10 refers to a capacitor with a capacitance less than or equal to 0.5 pF.

[0083] See also Figure 1 , Fig.12 and Fig.13 , Fig.12 for Figure 1 The current distribution diagram of the line assembly shown in FIG. 1 at the sixth resonance mode; Fig.13 for Figure 1 The antenna assembly shown is a schematic diagram of the sixth directional pattern supporting the first frequency band. For the convenience of illustration, Fig.12 (a) is a color image; Fig.12 (b) in Fig.12 Grayscale image of (a) in ; Fig.13 (a) is a color image; Fig.13 (b) in Fig.13 For the convenience of description, the resonant current corresponding to the sixth resonant mode is named the sixth resonant current I6. The sixth resonant mode is also called the even mode supporting the first frequency band; accordingly, the sixth resonant current I6 is also called the even mode current of the first frequency band. When the tuning switch 130 is in a closed state, the sixth directional diagram of the first frequency band will be introduced later in conjunction with the simulation diagram.

[0084] It should be noted that, when the connection point G1 is grounded through a small inductor, or the connection point G2 is grounded through a large capacitor, for the first frequency band, it can be equivalent to the connection point G1 being grounded through the tuning switch 130 and the tuning switch 130 being in a closed state. In other words, for the first frequency band, the connection point G1 is grounded through the tuning switch 130 and the tuning switch 130 is closed, including: the connection point G1 is electrically connected to the tuning switch 130 to the ground and the tuning switch 130 itself is in a closed state; or, the connection point G1 is grounded through a small inductor; or, the connection point G1 is grounded through a large capacitor.

[0085] In one embodiment, the small inductor referred to in the antenna assembly 10 refers to an inductor with an inductance value less than or equal to 2nH. In one embodiment, the large capacitor referred to in the antenna assembly 10 refers to a capacitor with a capacitance value greater than or equal to 3pF.

[0086] In summary, the antenna assembly 10 provided in the embodiment of the present application, when the tuning switch 130 is in the open state, the first feed source S1 excites the first radiator 110 to support the first frequency band and has the fifth directional pattern; when the tuning switch 130 is in the closed state, the first feed source S1 excites the first radiator 110 to support the first frequency band and has the sixth directional pattern, and the fifth directional pattern is different from the sixth directional pattern. It can be seen that the antenna assembly 10 provided in the embodiment of the present application can control the state of the tuning switch 130 so that the antenna assembly 10 has different directional patterns when supporting the first frequency band, thereby realizing the reconfigurable directional pattern of the antenna assembly 10 when supporting the first frequency band. Therefore, when the antenna assembly 10 communicates with other devices in the first frequency band, the state of the tuning switch 130 can be controlled to realize the selection of the directional pattern of the first frequency band supported by the antenna assembly 10, thereby improving the communication experience when the antenna assembly 10 supports the first frequency band. It can be seen that the antenna assembly 10 provided in the embodiment of the present application has a good communication effect in the first frequency band.

[0087] Please continue reading Fig.10 and Fig.11 , the fifth resonance mode has a fifth resonance current I5 distributed in the first radiator 110. The fifth resonance current I5 has two fifth current zero points O5 arranged at intervals on the first radiator 110, and the directions of the currents of the fifth resonance current I5 between the two fifth current zero points O5 are the same.

[0088] As can be seen from the above description, the resonant current corresponding to the fifth resonant mode is named the fifth resonant current I5. The fifth resonant mode is also called the odd mode supporting the first frequency band; accordingly, the fifth resonant current I5 is also called the odd mode current of the first frequency band.

[0089] In an embodiment, the fifth resonant current I5 has two current zero points, wherein the current zero point of the fifth resonant current I5 is named as the fifth current zero point O5. The two fifth current zero points O5 are arranged at intervals. Specifically, in this embodiment, one of the two fifth current zero points O5 is adjacent to the first end 111, and the other of the two fifth current zero points O5 is adjacent to the second end 112. The current directions of the fifth resonant current I5 located between the two fifth current zero points O5 are the same. In other words, the current distribution of the fifth resonant current I5 located between the two fifth current zero points O5 is in the same direction. Due to the above distribution of the fifth current, a directional pattern normal to the first radiator 110 is generated. When the antenna assembly 10 is applied to an electronic device 1, if the first radiating portion 121 and the first radiator 110 are both arranged corresponding to the long side of the electronic device 1, the main lobe of the fifth directional pattern points to a direction perpendicular to the extension direction of the first radiator 110 (above the direction shown in the figure), or approximately perpendicular to the extension direction of the first radiator 110.

[0090] When the third frequency band includes the N78 frequency band and the first frequency band includes the N41 frequency band, by comparing the odd-mode current of the N78 frequency band with the odd-mode current of the N41 frequency band, it can be seen that the odd-mode current of the N78 frequency band is more biased to the right, so the directional diagram also has a certain deflection.

[0091] Please also read Figure 1 , Fig.12 and Fig.13 In this embodiment, the sixth resonant mode has a sixth resonant current I6 distributed in the first radiator 110, wherein the sixth resonant current I6 has a sixth current zero point O6 located on the first radiator 110, the sixth current zero point O6 is located between the first end 111 and the second end 112, and the sixth resonant current I6 is located between the first end 111 and the sixth current zero point O6, and the direction is opposite to the current between the sixth current zero point O6 and the second end 112.

[0092] In this embodiment, the sixth resonant current I6 has a current zero point. The current zero point of the sixth resonant current I6 is named the sixth current zero point O6. The sixth current zero point O6 is located between the first end 111 and the geothermal end. The sixth resonant current I6 is located between the first end 111 and the sixth current zero point O6, and the current is opposite to the current between the sixth current zero point O6 and the second end 112. In other words, the sixth resonant current I6 appears in the opposite direction at the sixth current zero point O6. In the sixth directional diagram generated by the sixth resonant circuit, the normal of the first radiator 110 is the zero point of the fourth directional diagram. The main lobe of the sixth directional diagram points to the direction in which the first radiator 110 points to the first radiating portion 121, or approximately the direction in which the first radiator 110 points to the first radiating portion 121. When the antenna assembly 10 is applied to an electronic device 1, if the first radiating portion 121 and the second radiating portion 122 are both arranged corresponding to the long side of the electronic device 1, the main board of the sixth radiation pattern points toward the bottom edge of the electronic device 1 (the left side of the illustrated direction).

[0093] When the third frequency band includes the N78 frequency band and the first frequency band includes the N41 frequency band, by comparing the even-mode current of the N78 frequency band and the even-mode current of the N41 frequency band, it can be seen that the even-mode current of the N78 frequency band is relatively consistent with the even-mode current of the N41 frequency band, and the directional diagrams are relatively consistent.

[0094] It can be seen that, for the antenna assembly 10 provided in the embodiment of the present application, the mainboard direction of the directivity diagram when the sixth resonant mode supports the first frequency band is the direction in which the first radiator 110 points to the first radiating portion 121, or is approximately the direction in which the first radiator 110 points to the first radiating portion 121. Therefore, when the antenna assembly 10 provided in the embodiment of the present application operates in the first frequency band, if the tuning switch 130 is in a closed state, the antenna assembly 10 has good communication performance in the direction in which the first radiator 110 points to the first radiating portion 121, or is approximately the direction in which the first radiator 110 points to the first radiating portion 121.

[0095] In addition, the sixth directional pattern is different from the fifth directional pattern. Judging from the fifth directional pattern and the sixth directional pattern, the area with weaker signal strength in the fifth directional pattern will be covered by the area with stronger signal strength in the sixth directional pattern; correspondingly, the area with weaker signal strength in the sixth directional pattern will be covered by the area with stronger signal strength in the fifth directional pattern. It can be seen that by adjusting the state of the tuning switch 130, the antenna assembly 10 can have a better communication effect in the first frequency band, thereby improving the communication experience when the antenna assembly 10 supports the first frequency band. It can be seen that the antenna assembly 10 provided in the embodiment of the present application has a better communication effect in the first frequency band.

[0096] In one embodiment, the first frequency band includes the N41 frequency band, and the second frequency band includes the N79 frequency band. In another embodiment, the first frequency band includes the B3 frequency band, and the second frequency band includes the N78 frequency band. In yet another embodiment, the first frequency band includes the LB frequency band, and the second frequency band includes the high frequency band.

[0097] When the first frequency band includes the N41 frequency band and the second frequency band includes the N79 frequency band, the communication requirements of the antenna assembly 10 in the N41 frequency band and the N79 frequency band can be met, and the antenna assembly 10 has good communication performance in the N41 frequency band and the N79 frequency band. When the first frequency band includes the B3 frequency band and the second frequency band includes the N78 frequency band, the communication requirements of the antenna assembly 10 in the B3 frequency band and the N78 frequency band can be met, and the antenna assembly 10 has good communication performance in the B3 frequency band and the N78 frequency band. When the first frequency band includes the low frequency (Low Band, LB) frequency band and the second frequency band includes the high frequency (High Band, HB) frequency band, the communication requirements of the antenna assembly 10 in the LB frequency band and the high frequency band can be met, and the antenna assembly 10 has good communication performance in the LB frequency band and the high frequency band.

[0098] When the antenna assembly 10 is also used to support a third frequency band, the frequency bands of the first frequency band, the second frequency band, and the third frequency band are described in detail as follows. The first frequency band includes the N41 frequency band, the second frequency band includes the N79 frequency band, and the third frequency band includes the N78 frequency band. In another embodiment, the first frequency band includes the B3 frequency band, the second frequency band includes the N78 frequency band, and the third frequency band includes the B40 frequency band. In yet another embodiment, the first frequency band includes the LB frequency band, the second frequency band includes the high frequency frequency band, and the third frequency band includes the middle frequency (Middle Band, MB) frequency band.

[0099] When the first frequency band includes the N41 frequency band, the second frequency band includes the N79 frequency band, and the third frequency band includes the N78 frequency band, the communication requirements of the antenna assembly 10 in the N41 frequency band, the N79 frequency band, and the N78 frequency band can be met, and the antenna assembly 10 has good communication performance in the N41 frequency band, the N79 frequency band, and the N78 frequency band. When the first frequency band includes the B3 frequency band, the second frequency band includes the N78 frequency band, and the third frequency band includes the B40 frequency band, the communication requirements of the antenna assembly 10 in the B3 frequency band, the N78 frequency band, and the B40 frequency band can be met, and the antenna assembly 10 has good communication performance in the B3 frequency band, the N78 frequency band, and the B40 frequency band. When the first frequency band includes the LB band, the second frequency band includes the MB band, and the third frequency band includes the intermediate frequency band, the communication requirements of the antenna assembly 10 in the LB band and the high frequency band can be met, and the antenna assembly 10 has good communication performance in the LB band, the high frequency band and the intermediate frequency band.

[0100] See also Fig.14 , Fig.14 A schematic diagram of an antenna assembly provided for another embodiment of the present application. The antenna assembly 10 includes a first radiator 110, a tuning switch 130, a first feed source S1, a second radiator 120 and a second feed source S2. The first radiator 110 has a first end 111, a connection point G1, a first feed point P1 and a second end 112 arranged in sequence. One end of the tuning switch 130 is electrically connected to the connection point G1, and the other end is grounded. The tuning switch 130 has a closed state and an open state. The first feed source S1 is electrically connected to the first feed point P1, and is used to excite the first radiator 110 to support the first frequency band. The second radiator 120 includes a first radiating portion 121. The first radiating portion 121 includes a third end 1211, a second feed point P2 and a grounding point G2 arranged in sequence. The third end 1211 is spaced apart from the second end 112 and has a coupling gap 121a. The second radiator 120 is coupled to the first radiator 110 through the coupling slot 121a, and the grounding point G2 is grounded. The second feed source S2 is electrically connected to the second feeding point P2. When the tuning switch 130 is in a closed state, the second feed source S2 excites the first resonance mode of the first radiating portion 121 and the first radiator 110 to support a second frequency band, and has a first directivity diagram, wherein the frequency of the second frequency band is greater than the frequency of the first frequency band. When the tuning switch 130 is in an open state, the second feed source S2 excites the second resonance mode of the first radiating portion 121 and the first radiator 110 to support a second frequency band, and has a second directivity diagram, wherein the first directivity diagram is different from the second directivity diagram.

[0101] The first radiator 110 , the tuning switch 130 , the second radiator 120 , the first resonance mode and the second resonance mode etc. can be referred to in the previous description and will not be described in detail here.

[0102] In addition, in this embodiment, the antenna assembly 10 further includes a first matching circuit M1 and a second matching circuit M2. The first feed source S1 electrically connects the first matching circuit M1 to the first feeding point P1, and the first matching circuit M1 is used to pass the first frequency band and filter out the second frequency band. The second feed source S2 electrically connects the second matching circuit M2 to the second feeding point P2, and the second matching circuit M2 is used to pass the second frequency band and filter out the first frequency band.

[0103] It can be understood that the antenna assembly 10 provided in the embodiment of the present application further includes a first matching circuit M1 and a second matching circuit M2, which can be combined with the antenna assembly 10 provided in any of the previous embodiments. In the schematic diagram of the present embodiment, the antenna assembly 10 further includes a first matching circuit M1 and a second matching circuit M2, which is combined with the antenna assembly 10 provided in the previous embodiment as an example for illustration, which can be understood that it should not be understood as a limitation on the embodiment of the present application. For example, the antenna assembly 10 further includes a first matching circuit M1 and a second matching circuit M2, which can also be combined with the antenna assembly 10 in which the antenna assembly 10 supports the first frequency band and the second frequency band; or, the antenna assembly 10 further includes a first matching circuit M1 and a second matching circuit M2, which can be combined with the antenna assembly 10 in which the antenna assembly 10 supports the first frequency band, the second frequency band, and the third frequency band.

[0104] The first matching circuit M1 is also called a different frequency filtering circuit. For example, the first matching circuit M1 may include at least one of a series inductor and a parallel capacitor. The first matching circuit M1 is used to pass the first frequency band and filter out the second frequency band. In this way, when the antenna assembly 10 also includes the first matching circuit M1, the first feeding point P1 is equivalent to grounding for the second frequency band. When the first matching circuit M1 filters out the second frequency band, it includes completely filtering out the second frequency band, or partially filtering out the second frequency band. The first matching circuit M1 filters out the second frequency band, which can reduce or even prevent the second frequency band from affecting the first frequency band supported by the first radiator 110. For example, when the second frequency band includes the N79 frequency band, when the antenna assembly 10 also includes the first matching circuit M1, the first feeding point P1 is equivalent to grounding for the N79 frequency band.

[0105] It can be understood that when the antenna assembly 10 also supports the third frequency band, the first matching circuit M1 is also used to filter out the third frequency band. The filtering of the third frequency band by the first matching circuit M1 includes completely filtering out the third frequency band, or partially filtering out the third frequency band. The first matching circuit M1 filters out the third frequency band, which can reduce or even prevent the influence of the third frequency band on the first frequency band supported by the first radiator 110. The first matching circuit M1 filters out the third frequency band, which can reduce or even prevent the influence of the third frequency band on the first frequency band supported by the first radiator 110. For example, when the third frequency band includes the N78 frequency band, the first feeding point P1 is equivalent to grounding for the N78 frequency band.

[0106] The second matching circuit M2 is also called a different-frequency filtering circuit. For example, the second matching circuit M2 includes a series capacitor. The second matching circuit M2 is used to pass the second frequency band and filter out the first frequency band. In this way, when the antenna assembly 10 also includes the second matching circuit M2, for the first frequency band, the second feeding point P2 is equivalent to grounding. When the second matching circuit M2 filters out the first frequency band, it includes completely filtering out the first frequency band, or partially filtering out the first frequency band. The second frequency band filters out the first frequency band, which can reduce or even prevent the influence of the first frequency band on the second frequency band generated by the second feed source S2. For example, when the first frequency band includes the N41 frequency band, when the antenna assembly 10 also includes the second matching circuit M2, the second feeding point P2 is equivalent to grounding for the N41 frequency band.

[0107] It can be understood that when the antenna assembly 10 also supports the third frequency band, the second matching circuit M2 is also used to pass the third frequency band.

[0108] See also Fig.15 , Fig.15 A schematic diagram of an antenna assembly provided for another embodiment of the present application. The second radiator 120 also includes a second radiating portion 122, the second radiating portion 122 is connected to the grounding point G2 of the first radiating portion 121, and the second radiating portion 122 has a grounding terminal 1221, and the grounding terminal 1221 is grounded. The second feed source S2 also excites the first radiating portion 121 and the second radiating portion 122 to support a fourth frequency band, wherein the frequency of the fourth frequency band is less than the frequency of the second frequency band. The antenna assembly 10 also includes a grounding capacitor C0. The grounding point G2 is grounded through the grounding capacitor C0, and the grounding capacitor C0 is equivalent to an open circuit for the fourth frequency band and is equivalent to a path for the second frequency band.

[0109] The second radiating portion 122 may be a laser direct structuring (LDS) radiator, or a flexible printed circuit (FPC) radiator, or a print direct structuring (PDS) radiator, or a metal branch radiator. When the antenna 10 is applied to an electronic device 1, the second radiating portion 122 may be a laser direct structuring (LDS) radiator, or a flexible printed circuit (FPC) radiator, or a print direct structuring (PDS) radiator, or a metal branch radiator. Fig. 20 and Fig.21 ) is a mechanical design antenna (MDA) radiator with its own metal insert. For example, the second radiating portion 122 can be an antenna radiator designed using the middle frame 30 formed of plastic and metal of the electronic device 1. In addition, the second radiating portion 122 can also be a metal frame radiator designed with a metal middle frame 30. The type of the second radiating portion 122 may be the same as or different from the type of the first radiator 110, and is not limited here. In this embodiment, the second radiating portion 122 and the first radiating portion 121 are an integrated structure.

[0110] In the schematic diagram of the present embodiment, the antenna assembly 10 further including the second radiating portion 122 and the grounding capacitor C0 is combined with the antenna assembly 10 provided in the previous embodiment as an example for illustration. It can be understood that the antenna assembly 10 provided in the embodiment of the present application can be combined with any other antenna assembly 10 provided in any embodiment. For example, in the schematic diagram of the present embodiment, the antenna assembly 10 further including the second radiating portion 122 and the grounding capacitor C0 is combined with the antenna assembly 10 including the first matching circuit M1 and the second matching circuit M2; it can be understood that in other embodiments, the antenna assembly 10 further including the second radiating portion 122 and the grounding capacitor C0 can be combined with the antenna assembly 10 not including the first matching circuit M1 and not including the second matching circuit M2.

[0111] The grounding method of the grounding terminal 1221 can be, but is not limited to, electrically connected to the ground electrode through a grounding member (eg, a conductive screw, or conductive glue, or a conductive spring, or a conductive connecting rib, etc.).

[0112] The antenna assembly 10 also includes a grounding capacitor C0, and the grounding capacitor C0 is equivalent to a path in the second frequency band. Therefore, the connection point G1 is grounded through the grounding capacitor C0, and the first radiating portion 121 and the first radiator 110 are constructed as an IFA antenna radiator in the second frequency band. When the second feed source S2 also generates an excitation signal in the third frequency band, the grounding capacitor C0 is equivalent to a path for the third frequency band. Therefore, the grounding point G2 is grounded through the grounding capacitor C0, and the first radiating portion 121 and the first radiator 110 are constructed as an IFA antenna radiator in the third frequency band.

[0113] The grounding capacitor C0 is equivalent to an open circuit for the fourth frequency band, so the first radiating portion 121 and the second radiating portion 122 of the second radiator 120 jointly support the fourth frequency band. Since the grounding end 1221 of the second radiating portion 122 is grounded, the third end 1211 of the first radiating portion 121 is a free end, so the first radiating portion 121 and the second radiating portion 122 of the second radiator 120 jointly constitute an IFA antenna radiator supporting the fourth frequency band.

[0114] In the antenna assembly 10 provided in the embodiment of the present application, the second radiator 120 further includes a second radiating portion 122, and the antenna assembly 10 further includes a grounding capacitor C0. Therefore, the second radiator 120 can support the fourth frequency band, and when the second radiator 120 supports the fourth frequency band, there is almost no effect on the second frequency band jointly supported by the first radiating portion 121 of the second radiator 120 and the first radiator 110, and when the first radiating portion 121 and the first radiator 110 jointly support the third frequency band, there is almost no effect on the third frequency band. In addition, the grounding capacitor C0 has almost no effect on the fourth frequency band. Specifically, the existence of the grounding capacitor C0 has almost no effect on the operation of the resonant state (such as the IFA state) when the second radiator 120 supports the fourth frequency band.

[0115] See also Fig.16 , Fig.16 for Fig.15 The current distribution diagram of the antenna assembly when supporting the fourth frequency band is shown. The overall quarter-wavelength mode of the first radiating portion 121 and the second radiating portion 122 is used to support the fourth frequency band.

[0116] For the convenience of description, the resonant current when the antenna assembly 10 supports the fourth frequency band is named as the seventh resonant current I7. In the schematic diagram of this embodiment, the seventh resonant current I7 flows from the ground terminal 1221 to the third terminal 1211. It can be understood that the seventh resonant current I7 changes periodically, and in the next half-wavelength period, the seventh resonant current I7 flows from the third terminal 1211 to the ground terminal 1221.

[0117] Since the second radiator 120 includes the first radiating portion 121 and the second radiating portion 122 connected to each other, the third end 1211 of the first radiating portion 121 is a free end, and the ground end 1221 of the second radiating portion 122 is grounded, when the second radiator 120 includes the first radiating portion 121 and the second radiating portion 122, the entire branch of the second radiating portion 122 is an IFA branch (also referred to as an IFA radiator). Therefore, the quarter-wavelength mode of the first radiating portion 121 and the second radiating portion 122 is also referred to as an IFA mode.

[0118] It should be noted that the overall quarter-wavelength mode of the first radiating portion 121 and the second radiating portion 122 is used to support the "wavelength" in the fourth frequency band, which refers to the wavelength corresponding to the center frequency (also called the center frequency point) of the fourth frequency band.

[0119] The quarter-wavelength mode is also called the fundamental mode. When the overall quarter-wavelength mode of the first radiating portion 121 and the second radiating portion 122 is used to support the fourth frequency band, the fundamental mode of the entire branch section of the second radiator 120 also supports the fourth frequency band, so that the antenna assembly 10 has a higher radiation efficiency in the fourth frequency band.

[0120] In one implementation, the second frequency band includes the N79 frequency band, and the fourth frequency band includes the LB frequency band.

[0121] When the second frequency band includes the N79 frequency band, the fourth frequency band includes the LB frequency band, which can meet the communication requirements of the antenna assembly 10 in the N79 frequency band and the LB frequency band.

[0122] In one embodiment, when the second feed source S2 also excites the first radiation portion 121 and the first radiator 110 to jointly support the third frequency band, the first feed source S1 generates an excitation signal of the second frequency band, an excitation signal of the third frequency band, and an excitation signal of the fourth frequency band. In this way, the antenna assembly 10 can support the second frequency band, the third frequency band, and the fourth frequency band, and meet the communication requirements of the antenna assembly 10 in the second frequency band, the third frequency band, and the fourth frequency band. For example, the second frequency band includes the N79 frequency band, the third frequency band includes the N78 frequency band, and the fourth frequency band includes the LB frequency band.

[0123] Furthermore, in one embodiment, the first feed source S1 is also used to excite the first radiator 110 to support at least one of the fifth frequency band and the sixth frequency band.

[0124] As can be seen from the previous introduction, the first feed source S1 is used to stimulate the first radiator 110 to support the first frequency band; when the first feed source S1 is also used to stimulate the first radiator 110 to support at least one of the fifth frequency band and the sixth frequency band, the first feed source S1 stimulates the first radiator 110 to support the first frequency band, and the first feed source S1 also stimulates the first radiator 110 to support at least one of the fifth frequency band and the sixth frequency band, so that the first radiator 110 can support more frequency bands to meet the communication requirements of the first frequency band and the communication requirements of at least one of the fifth frequency band and the sixth frequency band.

[0125] In one implementation, the first frequency band includes an N41 frequency band, the fifth frequency band includes an MHB frequency band, and the sixth frequency band includes a WiFi 2.4G frequency band.

[0126] When the first frequency band includes the N41 frequency band, the fifth frequency band includes the MHB frequency band, and the sixth frequency band includes the WiFi 2.4G frequency band, the antenna assembly 10 can not only meet the communication requirements of the N41 frequency band, but also meet the communication requirements of at least one of the MHB frequency band and the WiFi 2.4G frequency band.

[0127] See also Fig.17 , Fig.17 Schematic diagram of an antenna assembly provided in one embodiment of the present application. In this embodiment, the second radiator 120 further includes a conductive block 123. The conductive block 123 is electrically connected to the second radiating portion 122, and the conductive block 123 and the ground electrode 80 form a filter capacitor, which is used to filter out clutter in the second frequency band.

[0128] The conductive block 123 and the ground electrode form a filter capacitor (also called a distributed capacitor) to filter out the clutter in the second frequency band, thereby improving the performance of the second frequency band. It can be understood that when the second feed source S2 excites the first radiating portion 121 and the first radiator 110 to support the third frequency band, the filter capacitor formed by the conductive block 123 and the ground electrode is also used to filter out the clutter in the third frequency band, thereby improving the performance of the third frequency band.

[0129] In the schematic diagram of this embodiment, the second radiator 120 is illustrated as an example in which three conductive blocks 123 are arranged at intervals. It can be understood that the number and shape of the conductive blocks 123 should not be understood as a limitation on the antenna assembly 10 provided in the embodiment of the present application.

[0130] Since the second radiator 120 includes a conductive block 123, the conductive block 123 and the ground electrode form a filter capacitor, and therefore, the conductive block 123 is also called a distributed capacitor. For the second frequency band and the third frequency band, the design of the conductive block 123 can improve the performance of the second frequency band and can improve the performance of the third frequency band. For the first frequency band, the filter capacitor is equivalent to an open circuit, and the setting of the conductive block 123 will not affect or will hardly affect the performance of the first frequency band.

[0131] It can be understood that when the antenna assembly 10 provided in this embodiment is applied to the electronic device 1, the first radiator 110 is set corresponding to the volume button 610 of the electronic device 1, and the second radiator 120 is set corresponding to the power button 620 of the electronic device 1. It can be understood that this should not be understood as a limitation on the embodiment of the present application. In one embodiment, when the antenna assembly 10 is applied to the electronic device 1, the antenna assembly 10 can be set corresponding to the top, bottom, side, or four corners of the electronic device 1.

[0132] See also Fig.18 , Fig.18 for Fig.17 The performance simulation diagram of the antenna assembly provided supports the first frequency band. Fig.18 In the simulation, the first frequency band is taken as a low frequency band as an example. Fig.18 (a) is a color image. Fig.18 (b) in Fig.18 Grayscale image of (a) in . Fig.18 The horizontal axis is frequency in GHz, and the vertical axis is efficiency in dB. It can be seen that when the second radiator 120 of the antenna assembly 10 provided in the embodiment of the present application further includes a conductive block 123, the efficiency of the antenna assembly 10 in the first frequency band remains normal.

[0133] See also Fig.19 , Fig.19 The performance diagram of the antenna assembly without distributed capacitance and with distributed capacitance is shown in Figure 1. Fig.19 (a) is a color image. Fig.19 (b) in Fig.19 Grayscale image of (a) in FIG. 1 . The horizontal axis is frequency, in GHz, and the vertical axis is system radiation efficiency (System Radiation Efficiency), in dB. The conductive block 123 forms a filter capacitor with the ground, and the conductive block 123 is also called a distributed capacitor. The blue curve is a system radiation efficiency curve when the second radiator 120 does not include the conductive block 123, and the second radiator 120 does not include the conductive block 123, which is also called a non-distributed capacitor. Fig.19 The pink curve, green curve and red curve are all system radiation efficiency curves of the antenna assembly 10 in which the second radiator 120 includes the conductive block 123, wherein the pink curve, green curve and red curve correspond to distributed capacitances of the antenna assembly 10 that increase in sequence. Fig.19 It can be seen from the elliptical area that the system radiation efficiency of the second frequency band and the third frequency band can be changed when the second radiator 120 of the antenna assembly 10 includes the conductive block 123. In the schematic diagram of this embodiment, the more distributed capacitance is added, the better the system radiation performance of the second frequency band and the third frequency band.

[0134] In one embodiment, the first frequency band supported by the first radiator 110 includes the N41 frequency band, the fifth frequency band supported by the first radiator 110 includes the MHB frequency band, the second frequency band includes the N79 frequency band, and the third frequency band includes the N78 frequency band: the electrical length of the first radiator 110 is about 0.5 times the wavelength of the center frequency of the overall frequency band of the N41 frequency band + the MHB frequency band (for example, 0.25 times the wavelength to 0.75 times the wavelength); the electrical length of the first radiator 110 is 0.5 times the wavelength to 1 times the wavelength of the center frequency of the third frequency band; the electrical length of the first radiator 110 is 0.5 times the wavelength to 1.5 times the wavelength of the second frequency band. Therefore, the three-band (first frequency band, second frequency band and third frequency band) directional pattern of the antenna assembly 10 provided in the embodiment of the present application can reconstruct the center frequency of the highest frequency band (second frequency band) of the antenna to be close to 2 times (usually within 2.5 times and 2.5 times), which is suitable for covering the combination of the N41 frequency band, the N78 frequency band and the N79 frequency band. In addition, the frequency range of the WiFi 2.4G frequency band and the N41 frequency band are close, so the antenna assembly 10 can also be used to cover the WiFi 2.4G frequency band. The frequency range of the WiFi 5G frequency band and the N79 frequency band are close, and the antenna assembly 10 can also cover the WiFi 5G frequency band.

[0135] In one embodiment, the first frequency band includes the N41 frequency band, the second frequency band includes the N79 frequency band, and the third frequency band includes the N78 frequency band. In other words, the antenna assembly 10 supports the N41 frequency band + the N78 frequency band + the N79 frequency band. In other embodiments, the antenna assembly 10 may support the B3 frequency band + the B1 frequency band + the B40 frequency band; or, the antenna assembly 10 may support the WiFi 2.4G frequency band + the WiFi 5G frequency band.

[0136] In summary, the antenna assembly 10 provided in one embodiment of the present application has different directional patterns in the second frequency band when the tuning switch 130 is in a closed state and when the tuning switch 130 is in an open state, so the antenna assembly 10 has two different directional pattern states in the second frequency band. The two different directional patterns in the second frequency band have good complementarity, expand the coverage of the directional pattern of the second frequency band, and can reduce the signal blind area when the antenna assembly 10 supports the second frequency band.

[0137] Accordingly, when the antenna assembly 10 provided in the embodiment of the present application also supports the third frequency band, when the tuning switch 130 is in a closed state and when the tuning switch 130 is in an open state, the directional pattern of the antenna assembly 10 in the third frequency band is different, so the antenna assembly 10 has two different directional pattern states in the third frequency band. The two different directional patterns of the third frequency band have good complementarity, expand the coverage of the directional pattern of the third frequency band, and can reduce the signal blind area when the antenna assembly 10 supports the third frequency band.

[0138] Accordingly, when the antenna assembly 10 provided in the embodiment of the present application also supports the first frequency band, when the tuning switch 130 is in a closed state and when the tuning switch 130 is in an open state, the directional pattern of the antenna assembly 10 in the first frequency band is different, so the antenna assembly 10 has two different directional pattern states in the first frequency band. The two different directional patterns of the first frequency band have good complementarity, expand the coverage of the directional pattern of the first frequency band, and can reduce the signal blind area when the antenna assembly 10 supports the first frequency band.

[0139] When the antenna assembly 10 provided in the embodiment of the present application supports the first frequency band, the second frequency band and the third frequency band, the antenna assembly 10 can realize two different directional pattern states in the first frequency band, the second frequency band and the third frequency band, and these two directional pattern states can also be called odd-mode state and even-mode state. The two different directional pattern states in the same frequency band have good complementarity, can expand the directional pattern coverage area, and reduce the signal blind area.

[0140] In addition, when the state of the tuning switch 130 is switched, the antenna assembly 10 supports beam switching of the corresponding direction of the sunrise pattern with good broadband characteristics, and can still maintain good complementary characteristics of the two states in a wide frequency band.

[0141] In addition, the antenna architecture of the antenna assembly 10 provided in the embodiment of the present application can be compatible with other frequency bands without increasing the complexity of the antenna assembly 10, so that the antenna assembly 10 can meet the communication needs of more frequency bands. For example, when the first frequency band includes the N41 frequency band, the second frequency band includes the N79 frequency band, and the third frequency band includes the N78 frequency band, the first radiator 110 can be compatible with and support the MHB frequency band, and the second radiator 120 can be compatible with and support the LB frequency band. In addition, the frequency ranges of the WiFi 2.4G frequency band and the N41 frequency band are close, so the antenna assembly 10 can also be used to cover the WiFi 2.4G frequency band. The frequency ranges of the WiFi 5G frequency band and the N79 frequency band are close, and the antenna assembly 10 can also cover the WiFi 5G frequency band.

[0142] Furthermore, when the first radiator 110 and the second radiator 120 of the antenna assembly 10 provided in the embodiment of the present application are arranged corresponding to the long side of the electronic device 1 (such as the second side 1b of the electronic device 1 introduced later), it is more suitable for the scenario where the electronic device 1 is in a horizontal screen state for communication (such as a two-handed gaming mode in a horizontal screen state). The antenna assembly 10 is not easily held tightly by the user with both hands, and the beam switching of the directional pattern of the required frequency band (such as at least one of the first frequency band, the second frequency band and the third frequency band) can be performed by controlling the state of the tuning switch 130, so that when the antenna assembly 10 is used to work in the required frequency band, there is a greater benefit.

[0143] In addition, in one embodiment, when the antenna assembly 10 provided in the embodiment of the present application supports the required frequency band (such as at least one of the first frequency band, the second frequency band and the third frequency band), the directional radiation pattern generated by the odd-mode current of the required frequency band has more practical coverage than the messy radiation pattern in the related art.

[0144] In addition, the antenna assembly 10 provided in the embodiment of the present application can adjust the tuning switch 130 to switch the antenna assembly 10 to support the required frequency band (such as at least one of the first frequency band, the second frequency band and the third frequency band) so that the radiation pattern is directed as little as possible to the human body, thereby reducing the electromagnetic wave absorption ratio (Specific Absorption Rate, SAR) of the antenna assembly 10 in the required frequency band.

[0145] Furthermore, the embodiment of the present application also provides an electronic device 1. The electronic device 1 includes but is not limited to mobile phones, telephones, televisions, tablet computers (Pad), cameras, personal computers, laptop computers (Personal Computer, PC), vehicle-mounted devices, headphones, watches, wearable devices, base stations, vehicle-mounted radars, customer premise equipment (Customer Premise Equipment, CPE) and other devices that can send and receive electromagnetic wave signals. In this application, the electronic device 1 is taken as an example of a mobile phone, and other devices can refer to the specific description in this application. The electronic device 1 may include an antenna assembly 10 as described in any of the previous embodiments. Please refer to the previous introduction of the antenna assembly 10, which will not be repeated here.

[0146] See also Fig. 20 , Fig.21 and Fig. 22 , Fig. 20 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application; Fig.21 A schematic diagram of a portion of the structure of an antenna assembly provided in one embodiment of the present application applied to an electronic device; Fig. 22 For the corresponding Fig.21 Schematic diagram of the model. Fig. 22 The electronic device 1 shown in FIG. 1 is a front view. Fig.21 and Fig. 22 The partial structure of the electronic device 1 shown in FIG. is a back view. Fig. 22 , the position of the antenna assembly 10 in the electronic device 1 is schematically shown, and other parts of the electronic device 1 are hidden. The electronic device 1 also includes a display screen 70, a middle frame 30 and a shell 90 (also called a battery cover). The display screen 70 and the shell 90 are respectively arranged on opposite sides of the middle frame 30. The middle frame 30 includes a frame body 310 and a frame 320. In this embodiment, the frame body 310 can be used as a ground pole. The frame 320 is arranged around the periphery of the frame body 310. Among them, the first radiator 110 in the antenna 10 is formed in the frame 320.

[0147] The middle frame 30 is usually conductive, such as a metal material (such as aluminum or aluminum-magnesium alloy). In the electronic device 1, the middle frame 30 is usually used to support the display screen 70 and the housing 90. Since the middle frame 30 is conductive, the middle frame 30 can also be used as a ground electrode. The devices in the electronic device 1 can be directly or indirectly electrically connected to the middle frame 30 for grounding.

[0148] In this embodiment, the first radiator 110 and the second radiator 120 are both formed with the frame 320. Compared with the structure in which the first radiator 110 and the second radiator 120 are both independent of the middle frame 30, the embodiment of the present application provides that part of the frame 320 of the electronic device 1 is reused as the first radiator 110 and the second radiator 120 of the antenna assembly 10, which can make the electronic device 1 smaller in size and more convenient to assemble.

[0149] In this embodiment, the frame 320 includes a first sub-frame 321 and a second sub-frame 322 which are bent and connected. The length of the second sub-frame 322 is greater than the length of the first sub-frame 321. The first radiator 110 and the second radiator 120 are both located in the second sub-frame 322. Specifically, there is a first gap 320a between the second sub-frame 322 and the frame body 310, and the second sub-frame 322 has a second gap 320b and a third gap 320c. The third gap 320c is spaced apart from the second gap 320b, and the second gap 320b and the third gap 320c are both connected to the first gap 320a. The second gap 320b defines the first end 111 of the first radiator 110. In this embodiment, the third gap 320c is the coupling gap 121a. The third gap 320c defines the second end 112 of the first radiating portion 121 of the second radiator 120 and the third end 1211 of the second radiating portion 122. Fig.21 In the embodiment, the second radiator 120 includes the first radiating portion 121 and the second radiating portion 122. It is understood that this should not be considered as a limitation on the electronic device 1 provided in the present application. The second radiator 120 of the antenna assembly 10 in the electronic device 1 may include the second radiating portion 122 or may not include the second radiating portion 122.

[0150] In the electronic device 1 provided in the embodiment of the present application, the first radiator 110 and the second radiator 120 are both located in the second sub-frame 322. When the electronic device 1 is in a horizontal state, the first radiator 110 and the second radiator 120 are not easily blocked, so that when the electronic device 1 is used in a horizontal state (for example, in a horizontal gaming scenario), the frequency band supported by the antenna assembly 10 has better communication performance.

[0151] Furthermore, the electronic device 1 includes a first side 1a and a second side 1b connected by bending, wherein the length of the second side 1b is greater than the length of the first side 1a, and the first radiator 110 and the second radiator 120 are both arranged corresponding to the second side 1b.

[0152] In this embodiment, the length of the second side 1b is greater than the length of the first side 1a, so the first side 1a is the short side of the electronic device 1, and the second side 1b is the long side of the electronic device 1. The first radiator 110 and the second radiator 120 are both arranged corresponding to the second side 1b, and when the electronic device 1 is in a horizontal screen state, it is not easy to block the first radiator 110 and the second radiator 120, so that when the electronic device 1 is used in a horizontal screen state (for example, in a horizontal screen state for playing games), the frequency band supported by the antenna assembly 10 has better communication performance.

[0153] In addition, in one embodiment, the middle frame 30 and at least one of the housing 90 and the display screen 70 also form a receiving space. The electronic device 1 also includes a battery, functional devices (the functional devices may include one or more of a camera module, a microphone, a receiver, a speaker, a face recognition module, and a fingerprint recognition module) and other devices that can realize the basic functions of the mobile phone, which are arranged in the receiving space, and will not be repeated in this embodiment. It can be understood that the above introduction to the electronic device 1 is only a description of an environment in which the antenna assembly 10 is used, and the specific structure of the electronic device 1 should not be understood as a limitation on the antenna assembly 10 provided in this application. In other embodiments, the electronic device 1 may also not include the display screen 70 and at least one of the housing 90.

[0154] See also Fig.23 , Fig.23 A schematic diagram of the circuit structure of an electronic device provided in an embodiment of the present application. In this embodiment, the electronic device 1 further includes a processor 50. The processor 50 is electrically connected to the tuning switch 130 of the antenna assembly 10. When the antenna assembly 10 is in the working frequency band, when the tuning switch 130 is in an open state, the antenna performance of the antenna assembly 10 in the working frequency band is the first performance; when the tuning switch 130 is in a closed state, the antenna performance of the antenna assembly 10 in the working frequency band is the second performance, wherein the working frequency band includes the first frequency band, or the second frequency band, or the third frequency band. When the first performance is better than the second performance, the processor 50 controls the tuning switch 130 to be disconnected or remain in an open state; when the second performance is better than the first performance, the processor 50 controls the first switch to be closed or remain in a closed state; when the first performance is equal to the second performance, the processor 50 controls the tuning switch 130 to maintain the current state.

[0155] The electronic device 1 provided in the embodiment of the present application also includes a processor 50 which can be combined with the antenna assembly 10 provided by any of the previous embodiments of the reflection. In the schematic diagram of the present embodiment, the electronic device 1 also includes a processor 50 combined with the antenna assembly 10 provided in the previous embodiment. 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.

[0156] It can be seen that in the electronic device 1 provided in the embodiment of the present application, the processor 50 can compare the first performance and the second performance of the antenna component 10, and then control the state of the tuning switch 130, so that the antenna component 10 has better performance when supporting the working frequency band.

[0157] The above is part of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. An antenna assembly, characterized in that: The antenna assembly comprises: A first radiator, the first radiator having a first end, a connection point, a first feeding point and a second end arranged in sequence; A tuning switch, one end of which is electrically connected to the connection point and the other end is grounded, and the tuning switch has a closed state and an open state; A first feed source, the first feed source being electrically connected to the first feed point and used to excite the first radiator to support a first frequency band; A second radiator, the second radiator includes a first radiating portion, the first radiating portion includes a third end, a second feeding point and a grounding point which are arranged in sequence, the third end is spaced apart from the second end and has a coupling gap, the second radiator is coupled to the first radiator through the coupling gap, and the grounding point is grounded; and a second feed source electrically connected to the second feed point; Wherein, when the tuning switch is in a closed state, the second feed source excites the first resonance mode of the first radiating portion and the first radiator to support a second frequency band and has a first directivity diagram, wherein the frequency of the second frequency band is greater than the frequency of the first frequency band; When the tuning switch is in an off state, the second feed source excites the second resonance mode of the first radiation portion and the first radiator to support a second frequency band and has a second directivity pattern, wherein the first directivity pattern is different from the second directivity pattern.

2. The antenna assembly according to claim 1, wherein: The first resonant mode has a first resonant current distributed in the first radiation part and the first radiator, wherein the first resonant current has two first current intensity points and two first current zero points, the two first current intensity points are respectively located at the first end and the second end, the two first current zero points are spaced between the two first current intensity points, and the direction of the first resonant current located between the two first current zero points is the same.

3. The antenna assembly according to claim 1, wherein: The second resonant mode has a second resonant current distributed in the first radiation part and the first radiator, wherein the second resonant current has two second current intensity points and a second current zero point, the two second current intensity points are respectively located at the first end and the second end, the second current zero point is located between the two first current intensity points, and the second resonant current is located between the first end and the second current zero point, and the direction of the current is opposite to the direction of the current located between the second current zero point and the second end.

4. The antenna assembly according to any one of claims 1 to 3, characterized in that: When the tuning switch is in an off state, the second feed source further excites the third resonance mode of the first radiating portion and the first radiator to support a third frequency band and has a third orientation diagram, wherein the frequency of the third frequency band is greater than the frequency of the first frequency band, and the frequency of the third frequency band is less than the frequency of the second frequency band; When the tuning switch is in a closed state, the second feed source excites the fourth resonance mode of the first radiating portion and the first radiator to support a third frequency band and have a fourth radiation pattern, wherein the third radiation pattern is different from the fourth radiation pattern.

5. The antenna assembly according to claim 4, characterized in that The third resonance mode has a third resonance current distributed in the first radiation portion and the first radiator, wherein the third resonance current has two third current zero points arranged at intervals on the first radiator, and the third resonance current has the same direction of current between the two third current zero points.

6. The antenna assembly according to claim 4, wherein: The fourth resonant mode has a fourth resonant current distributed in the first radiation portion and the first radiator, wherein the fourth resonant current has a fourth current zero point located in the first radiator, the fourth current zero point is located between the first end and the second end, and the fourth resonant current is located between the first end and the fourth current zero point, and the direction of the current is opposite to the direction of the current between the fourth current zero point and the second end.

7. The antenna assembly according to any one of claims 1 to 3, characterized in that: When the tuning switch is in an off state, the first feed source excites a fifth resonance mode of the first radiator to support the first frequency band and has a fifth directivity pattern; When the tuning switch is in a closed state, the first feed source excites a sixth resonant mode of the first radiator to support the first frequency band and has a sixth directivity pattern, wherein the fifth directivity pattern is different from the sixth directivity pattern.

8. The antenna assembly according to claim 7, wherein: The fifth resonance mode has a fifth resonance current distributed in the first radiator, wherein the fifth resonance current has two fifth current zero points disposed at intervals on the first radiator, and the directions of the fifth resonance current between the two fifth current zero points are the same.

9. The antenna assembly according to claim 7, wherein: The sixth resonant mode has a sixth resonant current distributed in the first radiator, wherein the sixth resonant current has a sixth current zero point located in the first radiator, the sixth current zero point is located between the first end and the second end, and the sixth resonant current is located between the first end and the sixth current zero point, and the direction of the current is opposite to the direction of the current between the sixth current zero point and the second end.

10. The antenna assembly according to claim 4, wherein: The first frequency band includes the N41 frequency band, the second frequency band includes the N79 frequency band, and the third frequency band includes the N78 frequency band; or, The first frequency band includes the B3 frequency band, the second frequency band includes the N78 frequency band, and the third frequency band includes the B40 frequency band; or, The first frequency band includes an LB frequency band, the second frequency band includes a high frequency band, and the third frequency band includes an intermediate frequency band.

11. The antenna assembly according to claim 1, wherein: The antenna assembly further comprises: a first matching circuit, wherein the first feed source electrically connects the first matching circuit to the first feeding point, and the first matching circuit is used to pass the first frequency band and filter out the second frequency band; and A second matching circuit, wherein the second feed source electrically connects the second matching circuit to the second feeding point, and the second matching circuit is used for passing the second frequency band and filtering out the first frequency band.

12. The antenna assembly according to claim 1, wherein: The second radiator further includes a second radiating portion, the second radiating portion is connected to a grounding point of the first radiating portion, and the second radiating portion has a grounding end, and the grounding end is grounded; the second feed source further excites the first radiating portion and the second radiating portion to support a fourth frequency band, wherein the frequency of the fourth frequency band is less than the frequency of the second frequency band; The antenna assembly further comprises: A grounding capacitor, the grounding point is grounded through the grounding capacitor, the grounding capacitor is equivalent to an open circuit for the fourth frequency band, and is equivalent to a path for the second frequency band.

13. The antenna assembly according to claim 12, wherein: The overall quarter-wavelength mode of the first radiating portion and the second radiating portion is used to support the fourth frequency band.

14. The antenna assembly according to claim 12, wherein: The second frequency band includes the N79 frequency band, and the fourth frequency band includes the LB frequency band.

15. The antenna assembly according to claim 12, wherein: The second radiator further comprises: A conductive block, wherein the conductive block is electrically connected to the second radiating portion, and the conductive block and the ground electrode form a filter capacitor, and the filter capacitor is used to filter out clutter in the second frequency band.

16. The antenna assembly according to claim 1, wherein: The first feed source is further used to excite the first radiator to support at least one of a fifth frequency band and a sixth frequency band.

17. The antenna assembly according to claim 16, wherein: The first frequency band includes the N41 frequency band, the fifth frequency band includes the MHB frequency band, and the sixth frequency band includes the WiFi 2.4G frequency band.

18. An electronic device, characterized in that: The electronic device comprises the antenna assembly as described in any one of claims 1-17.

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