Antenna assembly and electronic equipment

Abstract

The embodiment of the invention discloses an antenna assembly and electronic equipment, a base frame is used for bearing a conductive structure, and an accommodating area is used for fixing a radiation unit. Therefore, on one hand, the conductive structure is electrically connected with the metal shell so as to form a first electric path and a second electric path which are respectively coupled with the first radiator and the second radiator. Therefore, the signal gain of the antenna in the specific direction is improved, the antenna assembly can stably transmit and receive low-frequency signals and high-frequency signals, and mutual interference is reduced. And on the other hand, the path lengths of the first electric path and the second electric path are increased by using the metal shell, so that the overlapped electromagnetic signal has a larger bandwidth, and the radiation performance of the antenna assembly is improved. And on the other hand, the metal shell can directly cover the outer side of the radiation unit, so that a metal breakpoint is prevented from being formed on the metal shell. Therefore, the manufacturing process of the antenna assembly is simplified, and the manufacturing cost is reduced.

Description

Technical Field

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

[0002] The metal breakpoints set on the housing of the electronic device can separate the housing into different areas, making it easier to set up an antenna in the housing, ensuring the antenna's transceiver performance and preventing the housing from interfering with the signal. However, setting metal breakpoints on the housing will also increase the manufacturing cost of the housing and reduce the mechanical strength of the housing. How to reduce the manufacturing difficulty of the housing while ensuring the antenna's transceiver performance has become a problem that needs to be solved. Summary of the invention

[0003] In view of this, an embodiment of the present invention provides an antenna assembly and an electronic device, which electrically connects the radiation unit to the metal shell and forms a first electrical path and a second electrical path for respectively superimposing signals with the first radiator and the second radiator, thereby improving the radiation performance of the antenna and simplifying the manufacturing cost of the metal shell.

[0004] According to a first aspect of an embodiment of the present invention, an antenna assembly is provided, the antenna assembly comprising:

[0005] A metal shell having a receiving area; and

[0006] a radiation unit, arranged in the accommodating area and comprising a base frame and a conductive structure arranged on the base frame, wherein the conductive structure comprises a main radiation portion, a feeding area, a grounding area and an electrical contact portion, wherein the conductive structure is electrically connected to the metal shell through the electrical contact portion and forms a first electrical path and a second electrical path respectively, wherein the main radiation portion comprises a first radiator and a second radiator, wherein the first radiator is coupled to the first electrical path, and the second radiator is coupled to the second electrical path;

[0007] The radiation unit is configured such that the electromagnetic signal of the feeding area is transmitted to the grounding area through the first electrical path and the second electrical path respectively, and the electromagnetic signal is superimposed on the first radiator through the first electrical path to form a high-frequency signal, and the electromagnetic signal is superimposed on the second radiator through the second electrical path to form a low-frequency signal.

[0008] Further, the electrical contact portion comprises a first electrical contact region and a second electrical contact region which are spaced apart;

[0009] The metal shell includes a frame body, which is disposed around a portion of the radiation unit and abuts against the first electrical contact area and the second electrical contact area. The frame body between the first electrical contact area and the second electrical contact area forms a portion of the second electrical path.

[0010] Further, the frame includes a first side beam and a second side beam, and the first side beam and the second side beam are vertically connected;

[0011] The first electrical contact area and the second electrical contact area are respectively in contact with the first side beam and the second side beam, and the main radiation portion corresponds to the first side beam.

[0012] Furthermore, the base frame is in an L-shaped structure and includes a first section and a second section in an extending direction, and the first section and the second section are respectively arranged corresponding to the first side beam and the second side beam;

[0013] The conductive structure includes a conductive pattern, which includes the main radiating portion, a first branch and a ground connecting plate. The main radiating portion, the feeding area and the grounding area are arranged on the surface of the first section. The first branch is arranged in the second section, and one end of the first branch is electrically connected to the grounding area through the ground connecting plate, and the other end extends toward the first side beam to form the second electrical contact area.

[0014] Furthermore, the second section is provided with a mounting groove;

[0015] The conductive structure further includes a radio frequency switch, which is disposed in the mounting slot and has a plurality of conduction states, and is connected between the first branch and the ground connection sheet.

[0016] Furthermore, the base frame includes a first layout surface, a second layout surface and a third layout surface, the first layout surface and the third layout surface are opposite to each other, the second layout surface is located between the first layout surface and the third layout surface, the main radiating portion is arranged on the second layout surface, the first electrical contact area and the second electrical contact area are arranged on the first layout surface, and at least part of the ground connecting plate is arranged on the third layout surface.

[0017] Further, the length of the first branch is L1, in the extension direction of the frame, the length of the frame between the first electrical contact area and the second electrical contact area is L2, and the length of the ground connection sheet is L3;

[0018] L=(1 / 2)×λ2, where L is the length of the second electrical path, L=L1+L2+L3, and λ2 is the wavelength of the low-frequency signal.

[0019] Furthermore, the conductive pattern also includes a second branch, one end of which is electrically connected to the second radiator, and the other end of which extends toward the first radiator and is electrically connected to the feeding area and the first radiator, and the first electrical contact area extends from the second branch to the first side beam.

[0020] Furthermore, the metal shell further comprises a side plate, which is fixedly connected to the frame and forms the accommodation area;

[0021] The electrical contact portion further includes a third electrical contact area, and the third electrical contact area, the first side beam and the side plate form a portion of the first electrical path.

[0022] Furthermore, the radiation unit also includes a metal screw;

[0023] The third electrical contact area defines a first through hole, and the base frame defines a second through hole;

[0024] The metal shell further comprises a positioning boss fixedly connected to the frame, and the positioning boss is provided with a threaded hole;

[0025] The metal screw passes through the first through hole and the second through hole and is screwed to the threaded hole, and the table surface of the positioning boss abuts against the base frame, and the third electrical contact area is electrically connected to the frame through the metal screw.

[0026] Further, the conductive structure includes a conductive pattern, and the conductive pattern includes the main radiation portion and a ground connection sheet;

[0027] The base frame includes a second layout surface and a fourth layout surface, the second layout surface and the fourth layout surface are opposite to each other, the main radiation part is arranged on the second layout surface, and part of the ground connection sheet is arranged on the fourth layout surface and abuts against the side plate.

[0028] Furthermore, the base frame further comprises a third layout surface, the third layout surface is located between the second layout surface and the fourth layout surface, and the ground connection sheet is arranged on the second layout surface, the third layout surface and the fourth layout surface;

[0029] The grounding area is arranged on the second arrangement surface and connected to the grounding connecting sheet;

[0030] The antenna assembly further includes a coaxial line, an inner conductor of the coaxial line is connected to the feeding area, and an outer conductor of the coaxial line is connected to the grounding area.

[0031] In a second aspect, an embodiment of the present invention further provides an electronic device, the electronic device comprising:

[0032] According to the antenna assembly described in the first aspect above.

[0033] The antenna assembly and electronic device in this embodiment use a base frame to carry a conductive structure, and use an accommodating area to fix the radiation unit. Therefore, on the one hand, the conductive structure is electrically connected to the metal shell to form a first electrical path and a second electrical path that are coupled to the first radiator and the second radiator, respectively. Thereby, the signal gain of the antenna in a specific direction is improved, and the antenna assembly can stably transmit and receive low-frequency signals and high-frequency signals, reducing mutual interference. On the other hand, the metal shell is used to increase the path length of the first electrical path and the second electrical path, so that the superimposed electromagnetic signal has a larger bandwidth, thereby improving the radiation performance of the antenna assembly. On the other hand, the metal shell can be directly covered on the outside of the radiation unit to avoid opening a metal breakpoint on the metal shell. This simplifies the manufacturing process of the antenna assembly and reduces the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0035] Figure 1 is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention;

[0036] Figure 2 is an exploded schematic diagram of an antenna assembly according to an embodiment of the present invention;

[0037] Figure 3 is a schematic structural diagram of one side of a radiation unit in an embodiment of the present invention;

[0038] Figure 4 is a schematic structural diagram of the other side of the radiation unit in an embodiment of the present invention;

[0039] Figure 5 is a schematic structural diagram of a conductive pattern according to an embodiment of the present invention;

[0040] Figure 6 is a schematic structural diagram of a base frame according to an embodiment of the present invention;

[0041] Figure 7 yes Figure 5 A schematic diagram of the structure of the conductive pattern in the direction indicated by the arrow A;

[0042] Figure 8 is a schematic diagram of return loss simulation of an antenna assembly according to an embodiment of the present invention in some implementation modes;

[0043] Fig. 9 Schematic diagram of return loss simulation of the antenna assembly of the embodiment of the present invention in other implementations

[0044] Fig.10 is a schematic diagram of return loss simulation of the antenna assembly of the embodiment of the present invention in some other implementation modes;

[0045] Fig.11 It is a schematic diagram of return loss simulation of the antenna assembly of the embodiment of the present invention in some further implementation modes.

[0046] Description of reference numerals:

[0047] 1-Radiation unit;

[0048] 11-conductive structure; 111-main radiation part; 112-feeding area; 113-grounding area; 114-electrical contact part; 115-first radiator; 1151-first dipole arm;

[0049] 116 - second radiator; 1161 - second dipole arm;

[0050] 117 - ground connection plate; 118 - first central area; 119 - second central area;

[0051] 12-base frame; 121-first section; 122-second section; 123-installation groove; 124-second through hole; 125-first recessed area; 126-second recessed area;

[0052] 2-Metal shell;

[0053] 21- Accommodation area;

[0054] 22-frame; 221-first side beam; 222-second side beam;

[0055] 23-side panels;

[0056] 24-positioning boss; 241-threaded hole;

[0057] 25- back plate;

[0058] 31 - first electrical contact area; 32 - second electrical contact area; 33 - third electrical contact area; 331 - first through hole;

[0059] 41- first branch; 42- second branch;

[0060] 5-RF switch;

[0061] 61-first layout surface; 62-second layout surface; 63-third layout surface; 64-fourth layout surface;

[0062] 7-Metal screws;

[0063] 8-Coaxial cable. DETAILED DESCRIPTION

[0064] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the detailed description of the present invention below, some specific details are described in detail. It is possible for a person skilled in the art to fully understand the present invention without the description of these details. In order to avoid confusing the essence of the present invention, known methods, processes, flows, components and circuits are not described in detail.

[0065] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0066] Unless the context clearly requires otherwise, the words "include", "comprising" and similar words throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

[0067] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0068] Unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] For ease of explanation, spatially relative terms such as "inside", "outside", "below", "below", "lower", "above", "upper", etc. are used herein to describe the relationship of one element or feature illustrated in the figures to another element or feature. It will be understood that spatially relative terms may be intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figure is turned over, an element described as being "below" or "below" other elements or features will then be positioned as being "above" the other elements or features. Thus, the example term "below" can include both the orientations of above and below. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0070] Figure 1 Schematic diagram of the structure of the antenna assembly of this embodiment. Figure 2 Schematic diagram of an exploded view of the antenna assembly of this embodiment.

[0071] In some embodiments, Figure 1-Figure 2 As shown, in this embodiment, the antenna assembly includes a metal shell 2 and a radiation unit 1 disposed inside the metal shell 2. The metal shell 2 has a receiving area 21, and the radiation unit 1 is fixedly disposed in the receiving area 21. At the same time, the radiation unit 1 is electrically connected to the metal shell 2.

[0072] Optionally, the antenna assembly in this embodiment can be applied to electronic devices such as laptop computers, mobile phones or smart watches. That is, the metal shell 2 can be used to form the shell of a laptop computer, a mobile phone shell or a smart watch shell. Taking a laptop computer as an example, in this embodiment, the metal shell 2 is used to form the main shell of the laptop computer. The upper back plate 25 in the figure is the D shell of the laptop computer, that is, the lower cover of the main body. The lower side plate 23 is used to form the C shell, that is, the upper cover of the main body, the part surrounding the keyboard.

[0073] Figure 3 and Figure 4 1 is a schematic diagram of the structure of the radiation unit 1 of this embodiment. The outline of the conductive structure 11 in the two figures is shown by a thick solid line, and a part of the metal shell 2 is shown by a thin dotted line. Figure 3 The middle arrow indicates the flow direction of the low frequency signal on the conductive structure 11. The arrow with a dotted tail indicates the flow direction of the current on the second radiator 116, and the arrow with a solid tail indicates the flow direction of the current on the second electrical path. Figure 4 The arrow in the middle shows the flow direction of the high frequency signal on the conductive structure 11. The arrow with a dotted tail is the flow direction of the current on the first radiator 115, and the arrow with a solid tail is the flow direction of the current on the first electrical path.

[0074] Figure 5 Schematic diagram of the structure of the conductive pattern of this embodiment. Figure 6 1 is a schematic diagram of the structure of the base frame 12 of this embodiment. The conductive pattern in this embodiment can be formed on the outer surface of the base frame 12 by laser direct structuring (LDS), electroplating or chemical plating.

[0075] In some embodiments, Figure 2-Figure 5 As shown, the radiation unit 1 includes a base frame 12 and a conductive structure 11 disposed on the base frame 12. The main radiation portion 111 includes a first radiator 115 and a second radiator 116. The conductive structure 11 includes the main radiation portion 111, a feeding area 112, a grounding area 113 and an electrical contact portion 114. The conductive structure 11 is electrically connected to the metal shell 2 through the electrical contact portion 114 and forms a first electrical path (such as Figure 4 as shown) and a second electrical path (as Figure 3 The first radiator 115 is coupled to the first electrical path, and the second radiator 116 is coupled to the second electrical path.

[0076] At the same time, the electromagnetic signal of the radiation feeding area 112 is transmitted to the grounding area 113 through the first electrical path and the second electrical path respectively, and the electromagnetic signal is superimposed on the first radiator 115 through the first electrical path to form a high-frequency signal, and the electromagnetic signal is superimposed on the second radiator 116 through the second electrical path to form a low-frequency signal.

[0077] Specifically, the metal shell 2 is disposed on the outer side of the radiation unit 1 and is coupled to the conductive structure 11 of the radiation unit 1. The metal shell 2 is an integral structure, and no metal breakpoint is arranged on it. The first radiator 115 and the second radiator 116 are arranged at intervals and face the same side of the inner wall of the metal shell 2. In the arrangement direction of the first radiator 115 and the second radiator 116, the feeding area 112 is located between the first radiator 115 and the second radiator 116, which helps to feed the first radiator 115 and the second radiator 116 at the same time.

[0078] It is easy to understand that the first electrical path, the second electrical path, the first radiator 115 and the second radiator 116 in this embodiment will all generate electromagnetic signals under the excitation of the feeding area 112, wherein the electromagnetic wave generated by the first radiator 115 will be superimposed on the electromagnetic wave of the first electrical path to generate a high-frequency signal radiated toward the outside of the metal shell 2. The electromagnetic wave generated by the second radiator 116 will be superimposed on the electromagnetic wave of the second electrical path to generate a low-frequency signal radiated toward the outside of the metal shell 2. Among them, the first electrical path and the second electrical path can be equivalent to the first loop antenna and the second loop antenna, respectively. The first loop antenna and the first radiator 115 form a high-frequency antenna component, and the second loop antenna and the second radiator 116 form a low-frequency antenna component. As a result, the antenna assembly has dual-frequency communication capability and improves the gain of the antenna. In addition, the metal shell 2 is used to increase the flow path length of the upper current of the first electrical path and the second electrical path, so that the first electrical path and the second electrical path can respectively expand the bandwidth of the low-frequency signal and the high-frequency signal, thereby improving the radiation performance of the antenna assembly.

[0079] In summary, the antenna assembly in this embodiment uses the base frame 12 to carry the conductive structure 11, and uses the accommodating area 21 to fix the radiation unit 1. Therefore, on the one hand, the conductive structure 11 is electrically connected to the metal shell 2 to form a first electrical path and a second electrical path that are coupled to the first radiator 115 and the second radiator 116 respectively. Thereby, the signal gain of the antenna in a specific direction is improved, and the antenna assembly can stably transmit and receive low-frequency signals and high-frequency signals, reducing mutual interference. On the other hand, the metal shell 2 is used to increase the path length of the first electrical path and the second electrical path, so that the superimposed electromagnetic signal has a larger bandwidth, thereby improving the radiation performance of the antenna assembly. On the other hand, the metal shell 2 can be directly covered on the outside of the radiation unit 1 to avoid opening a metal breakpoint on the metal shell 2. This simplifies the manufacturing process of the antenna assembly and reduces the manufacturing cost.

[0080] In some embodiments, Figure 3 As shown, the electrical contact portion 114 includes a first electrical contact area 31 and a second electrical contact area 32 arranged at intervals. The metal shell 2 includes a frame 22, which is arranged around a portion of the radiation unit 1 and abuts against the first electrical contact area 31 and the second electrical contact area, and the frame 22 between the first electrical contact area 31 and the second electrical contact area 32 forms a portion of the second electrical path.

[0081] The frame 22 in this embodiment is attached to the side of the radiation unit 1 to provide structural strength for the metal shell 2 and protect the radiation unit 1. At the same time, the frame 22 and the first electrical contact area 31 and the second electrical contact area 32 arranged at intervals can further increase the path length of the second electrical path, so that the electromagnetic signal radiated by the second electrical path is shifted to a low frequency, thereby widening the bandwidth of the superimposed low-frequency signal.

[0082] In some embodiments, Figure 3 As shown, the frame 22 includes a first side beam 221 and a second side beam 222, which are vertically connected. The first electrical contact area 31 and the second electrical contact area 32 are respectively in contact with the first side beam 221 and the second side beam 222, and the main radiation portion 111 corresponds to the first side beam 221.

[0083] Specifically, the first electrical contact area 31 is close to the second side beam 222 relative to the first radiator 115. The radiation unit 1 in this embodiment can be arranged at the corner of the lower cover of the laptop computer to reduce the mutual interference between the radiation unit 1 and other electronic devices of the laptop computer, and make full use of the area to increase the length of the second electrical path. In addition, the main radiation part 111 is arranged corresponding to the first side beam 221 and staggered with the second side beam 222, which can increase the directivity of the electromagnetic signal.

[0084] In some embodiments, Figure 3 and Figure 6 As shown, the base frame 12 is L-shaped and includes a first section 121 and a second section 122 in the extension direction, and the first section 121 and the second section 122 are respectively arranged corresponding to the first side beam 221 and the second side beam 222. Thus, the L-shaped base frame 12 can free up more internal space for the laptop computer.

[0085] Further reference Figure 5As shown, the conductive structure 11 includes a conductive pattern. The conductive pattern includes a main radiating portion 111, a first branch 41 and a grounding connection sheet 117. The main radiating portion 111, the feeding area 112 and the grounding area 113 are arranged on the surface of the first section 121, the first branch 41 is arranged on the second section 122, and one end of the first branch 41 is electrically connected to the grounding area 113 through the grounding connection sheet 117, and the other end of the first branch 41 extends to the first side beam 221 to form a second electrical contact area 32. In this embodiment, the grounding connection sheet 117 and the first branch 41 are used to allow the electromagnetic signal to flow back to the grounding area 113, and the length of the second electrical path is further increased.

[0086] In some embodiments, Figure 3 As shown, the second section 122 defines a mounting slot 123 . The conductive structure 11 further includes a radio frequency switch 5 , which is disposed in the mounting slot 123 and has multiple conduction states. The radio frequency switch 5 is connected between the first branch 41 and the ground connection sheet 117 .

[0087] Specifically, the RF switch 5 in this embodiment has different conduction states, each conduction state can correspond to a different path, and each path can be set with a corresponding inductor and capacitor, so that when different paths are turned on, the RF switch 5 can produce different inductance or capacitance characteristics.

[0088] Therefore, the RF switch 5 is configured to finely adjust the frequency range of the low-frequency signal by switching different conduction states to meet the working condition requirements of the radiation unit 1. At the same time, the RF switch 5 is set away from the first radiator 115 to reduce the impact of the frequency change of the low-frequency signal on the high-frequency signal.

[0089] In some embodiments, Figure 6 As shown, the base frame 12 includes a first layout surface 61, a second layout surface 62 and a third layout surface 63. The first layout surface 61 and the third layout surface 63 are opposite to each other, and the second layout surface 62 is located between the first layout surface 61 and the third layout surface 63. The main radiation portion 111 is arranged on the second layout surface 62, the first electrical contact area 31 and the second electrical contact area 32 are arranged on the first layout surface 61, and at least part of the ground connection sheet 117 is arranged on the third layout surface 63. Therefore, this embodiment maximizes the use of the space of the base frame 12 and increases the length of the second electrical path.

[0090] Specifically, the second layout surface 62 includes a first layout area and a second layout area, the second layout area is horizontally arranged, and the first layout area is inclined and connected between the second layout area and the first layout surface 61. The first layout surface 61 is arranged toward the frame 22. The first radiator 115 is located in the first layout area, and the second radiator 116 is located in the first layout area and the second layout area at the same time. Thus, the first layout surface 61 can match the structure of the lower cover of the laptop host, making the structure inside the host more compact.

[0091] Figure 7 yes Figure 5 Schematic diagram of the structure of the conductive pattern in the direction indicated by arrow A.

[0092] In some embodiments, Figure 7 As shown, the length of the first branch 41 is L1. In the extension direction of the frame 22, the length of the frame 22 between the first electrical contact area 31 and the second electrical contact area 32 is L2 (i.e., the sum of the distance L21 and the distance L22), and the length of the ground connection sheet 117 is L3 (i.e., the sum of the distance L31 and the distance L32).

[0093] The length L of the second electrical path is configured to be equal to (1 / 2)×λ2. Wherein, L=L1+L2+L3, and λ2 is the wavelength of the low-frequency signal. That is, the length of the second electrical path is half of the wavelength of the low-frequency signal. Thus, the second electrical path formed by the first branch 41, the ground connection sheet 117 and the frame 22 can cooperate with the second radiator 116 to generate a low-frequency signal.

[0094] In some embodiments, Figure 3 As shown, the conductive pattern further includes a second branch 42. One end of the second branch 42 is electrically connected to the second radiator 116, and the other end extends toward the first radiator 115 and is electrically connected to the feeding area 112 and the first radiator 115, and the first electrical contact area 31 extends from the second branch 42 to the first side beam 221.

[0095] Specifically, the first electrical contact region 31 is close to an end of the second branch 42 away from the first radiator 115, and an end of the second branch 42 away from the first radiator 115 is connected to the second radiator 116, and the second radiator 116 extends toward the first radiator 115. The second branch 42 is used to conduct electromagnetic signals to the first electrical contact region 31 and the first radiator 115 respectively, and to maintain a predetermined distance between the first radiator 115 and the second radiator 116, thereby ensuring the isolation between the first radiator 115 and the second radiator 116.

[0096] In some embodiments, Figure 2 As shown, the metal shell 2 further includes a side plate 23, which is fixedly connected to the frame 22 and forms a receiving area 21. Figure 3 As shown, the electrical contact portion 114 further includes a third electrical contact region 33 , and the third electrical contact region 33 , the first side beam 221 and the side plate 23 form a portion of a first electrical path.

[0097] Specifically, the frame 22 extends along the edge of the side plate 23, and the base frame 12 is fixed to the plate surface of the side plate 23. The side plate 23 can be used to fix the keyboard of the notebook computer. The side plate 23 in this embodiment is electrically connected to the frame 22 and can be used to conduct electromagnetic signals, thereby increasing the length of the first electrical path.

[0098] In some embodiments, Figure 2 As shown, the radiation unit 1 also includes a metal screw 7. Figure 6-Figure 7 As shown, the third electrical contact area 33 defines a first through hole 331, and the base frame 12 defines a second through hole 124. Figure 2 As shown, the metal shell 2 further includes a positioning boss 24 fixedly connected to the frame 22, and the positioning boss 24 has a threaded hole 241. The metal screw 7 passes through the first through hole 331 and the second through hole 124 and is screwed to the threaded hole 241, and the table surface of the positioning boss 24 abuts against the base frame 12, and the third electrical contact area 33 is electrically connected to the frame 22 through the metal screw 7. The metal screw 7 in this embodiment is used to fix the radiation unit 1 to the metal shell 2, and at the same time, electrically connect the conductive structure 11 to the frame 22.

[0099] Preferably, a first recessed area 125 is provided at the edge of the second layout surface 62, and the first recessed area 125 is recessed from the second layout surface 62 to the fourth layout surface 64. The third electrical contact area 33 is arranged in the first recessed area 125. A second recessed area 126 is provided at the edge of the fourth layout surface 64. The second recessed area 126 is recessed toward the second layout surface 62. The positioning boss 24 extends into the second recessed area 126 and abuts against the bottom of the second recessed area 126. Thus, the head of the metal screw 7 is in electrical contact with the third electrical contact area 33, and the tail of the metal screw 7 is extended into the threaded hole 241. The length of the metal screw 7 is thereby reduced, making the structure of the radiation unit 1 more compact.

[0100] In some embodiments, Figure 4-Figure 6 As shown, the conductive structure 11 includes a conductive pattern, and the conductive pattern includes a main radiating portion 111 and a grounding connecting piece 117. The base frame 12 includes a second layout surface 62 and a fourth layout surface 64, the second layout surface 62 and the fourth layout surface 64 are opposite to each other, the main radiating portion 111 is arranged on the second layout surface 62, and part of the grounding connecting piece 117 is arranged on the fourth layout surface 64 and abuts against the side plate 23.

[0101] When the radiation unit 1 is installed on the side plate 23, the fourth layout surface 64 will abut against the side plate 23. In this form, the ground connection plate 117 arranged on the fourth layout surface 64 can be used to achieve electrical connection between the radiation unit 1 and the side plate 23, so that the first electrical path is conductive.

[0102] In some embodiments, Figure 3-Figure 6 As shown, the base frame 12 also includes a third layout surface 63, the third layout surface 63 is located between the second layout surface 62 and the fourth layout surface 64, and the ground connection plate 117 is arranged on the second layout surface 62, the third layout surface 63 and the fourth layout surface 64. The grounding area 113 is arranged on the second layout surface 62 and connected to the grounding connection plate 117. The antenna assembly also includes a coaxial line 8. The inner conductor (that is, the core) of the coaxial line 8 is connected to the feeding area 112, and the outer conductor (that is, the metal braided layer) is connected to the grounding area 113.

[0103] The core of the coaxial line 8 in this embodiment is used to feed the radiation unit 1 and provide grounding for the radiation unit 1 through the metal braided layer, so that the first electrical path and the second electrical path are connected through the feeding area 112 and the grounding area 113 .

[0104] Specifically, Figure 4-Figure 5 As shown, the grounding connecting piece 117 extends along an L shape and includes a middle piece and two flanges, the middle piece covers the third layout surface 63, and the two flanges are respectively arranged at the edge positions of the second layout surface 62 and the fourth layout surface 64. The flange located on the second layout surface 62 is connected to the grounding area 113, and the grounding area 113 is connected to the coaxial line 8 and plays a choke role. The flange located on the fourth layout surface 64 abuts against the side plate 23 to form a part of the first electrical path.

[0105] Preferably, if Figure 7 As shown, the first radiator 115 includes a first dipole arm 1151, which is connected end to end and surrounds the first central area 118, and the second radiator 116 has two second dipole arms 1161, which extend toward the first radiator 115, and the opposite sides of the two second dipole arms 1161 form two second central areas 119. The second branch 42 is connected to one end of the two second dipole arms 1161 away from the first radiator 115. No metal layer is provided in the first central area 118 and the second central area 119, so as to adjust the impedance of the first radiator 115 and the second radiator 116, and at the same time, the current fed into the electrical contact portion 114 and the second radiator 116 can be conducted along a predetermined direction to be superimposed with the electromagnetic signals of the first loop antenna and the second loop antenna, respectively.

[0106] In some embodiments, Figure 2As shown, the metal shell 2 includes a side plate 23, a frame 22 and a back plate 25. The back plate 25 is connected to the side plate 23 through the frame 22. The back plate 25 is covered on the main radiation part 111. Thus, the radiation unit 1 is in a closed metal cavity, avoiding the opening of metal breakpoints on the metal shell 2.

[0107] Preferably, the accommodation area 21 is an L-shaped groove matching the base frame 12, and the L-shaped groove has a length of 182 mm and a width of 20 mm (eg, Figure 2 The middle distance L4 is shown).

[0108] Figure 8 , Fig. 9 , Fig.10 and Fig.11 4 is a schematic diagram of return loss simulation of the antenna assembly of this embodiment. Figure 8-Figure 10 The dotted line frame on the left side of the figure is the operating frequency band of the low-frequency signal, and the dotted line frame on the right side is the operating frequency band of the high-frequency signal.

[0109] In some embodiments, Figure 3 As shown, the multiple conduction states of the RF switch 5 include a first conduction state, a second conduction state, a third conduction state and a fourth conduction state. In the first conduction state, the RF switch 5 is in an off state. The second conduction state is that the inductance value of the conduction path of the RF switch 5 is 36nh (nanohenry). The third conduction state is that the capacitance value of the conduction path of the RF switch 5 is 3.6pF (picofarad). The fourth conduction state is that the capacitance value of the conduction path of the RF switch 5 is 0.75pF (picofarad).

[0110] When the RF switch 5 is in the first conducting state (such as Figure 8 As shown), the return loss of the high-frequency signal of the antenna assembly is 1.452GHz-5.925GHz, and the return loss of the low-frequency signal is 617MHz-700MHz. When the RF switch 5 is in the second on state (as shown Fig. 9 As shown), the return loss of the high-frequency signal of the antenna assembly is 1.452GHz-5.925GHz, and the return loss of the low-frequency signal is 700MHz-800MHz. When the RF switch 5 is in the third conduction state (as shown Fig.10 As shown), the return loss of the high-frequency signal of the antenna assembly is 1.452GHz-5.925GHz, and the return loss of the low-frequency signal is 800MHz-880MHz. When the RF switch 5 is in the fourth conduction state (as shown Fig.11As shown in the figure, the return loss of the high-frequency signal of the antenna assembly is 1.452GHz-5.925GHz, and the return loss of the low-frequency signal is 880MHz-960MHz. It can be seen that as the electromagnetic signal conducted by the RF switch 5 gradually increases, the return loss of the low-frequency antenna component gradually increases, so the second electrical path and the second radiator 116 have good radiation performance. The return loss waveform of the high-frequency antenna component can remain almost unchanged, so the antenna assembly can better meet the radiation performance requirements of the wireless wide area network.

[0111] In an optional implementation, the antenna assembly in the above embodiment may be applied to electronic devices, including but not limited to laptop computers, mobile phones, smart watches and other devices.

[0112] In summary, the electronic device in this embodiment uses the base frame 12 to carry the conductive structure 11, and uses the accommodating area 21 to fix the radiation unit 1. Therefore, on the one hand, the conductive structure 11 is electrically connected to the metal shell 2 to form a first electrical path and a second electrical path that are coupled to the first radiator 115 and the second radiator 116 respectively. Thereby, the signal gain of the antenna in a specific direction is improved, and the antenna assembly can stably transmit and receive low-frequency signals and high-frequency signals, reducing mutual interference. On the other hand, the metal shell 2 is used to increase the path length of the first electrical path and the second electrical path, so that the superimposed electromagnetic signal has a larger bandwidth, thereby improving the radiation performance of the antenna assembly. On the other hand, the metal shell 2 can be directly covered on the outside of the radiation unit 1 to avoid opening a metal breakpoint on the metal shell 2. This simplifies the manufacturing process of the antenna assembly and reduces the manufacturing cost.

[0113] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An antenna assembly, characterized in that: The antenna assembly comprises: A metal shell (2) having a receiving area (21); and A radiation unit (1), arranged in the accommodation area (21) and comprising a base frame (12) and a conductive structure (11) arranged on the base frame (12), the conductive structure (11) comprising a main radiation portion (111), a feeding area (112), a grounding area (113) and an electrical contact portion (114), the conductive structure (11) being electrically connected to the metal shell (2) through the electrical contact portion (114) and forming a first electrical path and a second electrical path respectively, the main radiation portion (111) comprising a first radiator (115) and a second radiator (116), the first radiator (115) being coupled to the first electrical path, and the second radiator (116) being coupled to the second electrical path; The radiation unit (1) is configured such that the electromagnetic signal of the feeding area (112) is transmitted to the grounding area (113) through the first electrical path and the second electrical path respectively, and the electromagnetic signal is superimposed on the first radiator (115) through the first electrical path to form a high-frequency signal, and the electromagnetic signal is superimposed on the second radiator (116) through the second electrical path to form a low-frequency signal.

2. The antenna assembly according to claim 1, characterized in that: The electrical contact portion (114) comprises a first electrical contact region (31) and a second electrical contact region (32) which are arranged at intervals; The metal shell (2) comprises a frame (22), the frame (22) being arranged around a portion of the radiation unit (1) and abutting against the first electrical contact area (31) and the second electrical contact area, the frame (22) between the first electrical contact area (31) and the second electrical contact area (32) forming a portion of the second electrical path.

3. The antenna assembly according to claim 2, characterized in that: The frame (22) comprises a first side beam (221) and a second side beam (222), wherein the first side beam (221) and the second side beam (222) are vertically connected; The first electrical contact area (31) and the second electrical contact area (32) are respectively in contact with the first side beam (221) and the second side beam (222), and the main radiation portion (111) corresponds to the first side beam (221).

4. The antenna assembly according to claim 3, characterized in that: The base frame (12) is in an L-shaped structure and comprises a first section (121) and a second section (122) in the extension direction, and the first section (121) and the second section (122) are respectively arranged corresponding to the first side beam (221) and the second side beam (222); The conductive structure (11) comprises a conductive pattern, wherein the conductive pattern comprises the main radiating portion (111), a first branch (41) and a grounding connecting plate (117); the main radiating portion (111), the feeding region (112) and the grounding region (113) are arranged on the surface of the first section (121); the first branch (41) is arranged in the second section (122), and one end of the first branch (41) is electrically connected to the grounding region (113) through the grounding connecting plate (117), and the other end extends toward the first side beam (221) to form the second electrical contact region (32).

5. The antenna assembly according to claim 4, characterized in that: The second section (122) is provided with a mounting groove (123); The conductive structure (11) further comprises a radio frequency switch (5), wherein the radio frequency switch (5) is arranged in the mounting groove (123) and has a plurality of conduction states, and the radio frequency switch (5) is connected between the first branch (41) and the ground connection sheet (117).

6. The antenna assembly according to claim 4, characterized in that: The base frame (12) comprises a first layout surface (61), a second layout surface (62) and a third layout surface (63); the first layout surface (61) and the third layout surface (63) are opposite to each other; the second layout surface (62) is located between the first layout surface (61) and the third layout surface (63); the main radiation portion (111) is arranged on the second layout surface (62); the first electrical contact area (31) and the second electrical contact area (32) are arranged on the first layout surface (61); and at least part of the ground connection sheet (117) is arranged on the third layout surface (63).

7. The antenna assembly according to claim 6, characterized in that: The length of the first branch (41) is L1, in the extension direction of the frame (22), the length of the frame (22) between the first electrical contact area (31) and the second electrical contact area (32) is L2, and the length of the ground connection sheet (117) is L3; L=(1 / 2)×λ2, where L is the length of the second electrical path, L=L1+L2+L3, and λ2 is the wavelength of the low-frequency signal.

8. The antenna assembly according to claim 4, characterized in that: The conductive pattern further comprises a second branch (42), one end of the second branch (42) being electrically connected to the second radiator (116), and the other end of the second branch (42) extending toward the first radiator (115) and being electrically connected to the feeding area (112) and the first radiator (115), and the first electrical contact area (31) extending from the second branch (42) toward the first side beam (221).

9. The antenna assembly according to claim 3, characterized in that: The metal shell (2) further comprises a side plate (23), wherein the side plate (23) is fixedly connected to the frame (22) and forms the accommodating area (21); The electrical contact portion (114) further comprises a third electrical contact area (33); the third electrical contact area (33), the first side beam (221) and the side plate (23) form part of the first electrical path.

10. The antenna assembly according to claim 9, characterized in that: The radiation unit (1) further comprises a metal screw (7); The third electrical contact area (33) defines a first through hole (331), and the base frame (12) defines a second through hole (124); The metal shell (2) further comprises a positioning boss (24) fixedly connected to the frame (22), and the positioning boss (24) is provided with a threaded hole (241); The metal screw (7) passes through the first through hole (331) and the second through hole (124) and is screwed to the threaded hole (241), and the table surface of the positioning boss (24) abuts against the base frame (12), and the third electrical contact area (33) is electrically connected to the frame (22) through the metal screw (7).

11. The antenna assembly according to claim 9, characterized in that: The conductive structure (11) comprises a conductive pattern, and the conductive pattern comprises the main radiation portion (111) and a ground connection sheet (117); The base frame (12) comprises a second layout surface (62) and a fourth layout surface (64), the second layout surface (62) and the fourth layout surface (64) are opposite to each other, the main radiation part (111) is arranged on the second layout surface (62), and part of the ground connection sheet (117) is arranged on the fourth layout surface (64) and abuts against the side plate (23).

12. The antenna assembly according to claim 11, characterized in that: The base frame (12) further comprises a third layout surface (63), the third layout surface (63) being located between the second layout surface (62) and the fourth layout surface (64), and the ground connection sheet (117) being arranged on the second layout surface (62), the third layout surface (63) and the fourth layout surface (64); The grounding area (113) is arranged on the second arrangement surface (62) and connected to the grounding connecting plate (117); The antenna assembly further comprises a coaxial line (8), an inner conductor of the coaxial line (8) being connected to the feeding area (112), and an outer conductor of the coaxial line (8) being connected to the grounding area (113).

13. An electronic device, characterized in that: The electronic device comprises: the antenna assembly according to any one of claims 1-12.

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