Electronic device

Abstract

The electronic equipment provided by the invention comprises an antenna assembly, and the antenna assembly comprises a first radiator, a second radiator, a first resonance circuit, a matching circuit and a feed source. The first radiator comprises a first grounding point, a feeding point and a first open end; the second radiator comprises a second grounding point, a connecting point and a second open end, and a first coupling gap is formed between the second open end and the first open end; one end of the first resonance circuit is electrically connected with the connection point, the other end of the first resonance circuit is grounded, and the first resonance circuit is capacitive for a first frequency band; the matching circuit comprises a first capacitive element, and one end of the first capacitive element is electrically connected to the feeding point; the feed source is electrically connected with the other end of the first capacitive element, and the feed source is used for exciting the connection point to the second grounding point to form a first resonant mode supporting a first frequency band and exciting the feed point to the first grounding point to form a second resonant mode supporting a second frequency band; the antenna assembly can support more frequency bands and is miniaturized at the same time.

Description

Technical Field

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

[0002] With the advancement of communication standards like 5G / 6G, Wi-Fi 6E, and Bluetooth 5.0, mobile phones and other electronic devices must be compatible with 5G frequency bands ranging from low-frequency bands to mid- and high-frequency bands, including N77 / N78 / N79. Multi-band support has become a fundamental requirement for ensuring global roaming and network switching. At the same time, competition for space within smartphones is fierce, with components like batteries and camera modules crowding out antenna clearance, leaving limited space for antennas. Therefore, designing antenna components for electronic devices that support multiple frequency bands while remaining compact has become a technical challenge that needs to be addressed. Summary of the Invention

[0003] The present application provides an electronic device that enables an antenna assembly to support multiple frequency bands while being miniaturized.

[0004] In a first aspect, an embodiment of the present application provides an electronic device, wherein the electronic device includes an antenna assembly, and the antenna assembly includes:

[0005] a first radiator, the first radiator comprising a first ground point, a feeding point and a first open end;

[0006] a second radiator, the second radiator comprising a second grounding point, a connection point, and a second open end, wherein a first coupling gap is formed between the second open end and the first open end;

[0007] a first resonant circuit, one end of the first resonant circuit being electrically connected to the connection point, the other end of the first resonant circuit being grounded, and the first resonant circuit being capacitive in a first frequency band;

[0008] a matching circuit, the matching circuit comprising a first capacitive element, one end of the first capacitive element being electrically connected to the feeding point;

[0009] A feed source is electrically connected to the other end of the first capacitive element, and the feed source is used to excite the branch from the connection point to the second grounding point and the first resonant circuit to form a first resonant mode supporting the first frequency band, and is used to excite the branch between the feeding point and the first grounding point and the first capacitive element to form a second resonant mode supporting the second frequency band.

[0010] An electronic device provided in an embodiment of the present application includes an antenna assembly, the antenna assembly including a first radiator, a second radiator, a first resonant circuit, a matching circuit and a feed source; the first radiator includes a first grounding point, a feeding point and a first open end; the second radiator includes a second grounding point, a connection point and a second open end, and a first coupling gap is formed between the second open end and the first open end; one end of the first resonant circuit is electrically connected to the connection point, the other end of the first resonant circuit is grounded, and the first resonant circuit is capacitive for the first frequency band; the matching circuit includes a first capacitive element, one end of the first capacitive element is electrically connected to the feeding point; the feed source is electrically connected to the other end of the first capacitive element, and the feed source is used to excite the connection point to the second grounding point to form a first resonant mode supporting the first frequency band, and to excite the feeding point to the first grounding point to form a second resonant mode supporting the second frequency band; in this way, compared with each antenna group assembly supporting one frequency band, the antenna assembly can support the first frequency band and the second frequency band, thereby supporting more frequency bands while being miniaturized.

[0011] In a second aspect, an embodiment of the present application provides an electronic device, the electronic device including an antenna assembly and a reference ground plane, the antenna assembly including:

[0012] a first radiator, the first radiator being spaced apart along a first edge of the reference floor, the first radiator comprising a first grounding point, a feeding point, and a first open end;

[0013] a second radiator, the second radiator being spaced apart along the first edge of the reference floor, the second radiator comprising a second grounding point, a connection point, and a second open end, wherein a first coupling gap is formed between the second open end and the first open end;

[0014] a first resonant circuit, one end of the first resonant circuit being electrically connected to the connection point, the other end of the first resonant circuit being grounded, and the first resonant circuit being short-circuited with respect to the third frequency band; and

[0015] A matching circuit, the matching circuit further comprising a first matching branch, one end of the first matching branch being grounded, the first matching branch being short-circuited for the third frequency band;

[0016] a feed source, the feed source being electrically connected to the feed point;

[0017] a connecting element, the connecting element being located in a gap between the first radiator, the second radiator, and a first floor edge of the reference floor, one end of the connecting element being electrically connected to the connection point, and one end of the connecting element being electrically connected to the feeding point;

[0018] The feed source is also used to excite the connection point to the feeding point, the first resonant circuit, the first floor edge and the first matching branch to form a first zeroth-order resonant mode supporting the third frequency band; the feed source is also used to excite the connection point to the feeding point and the connecting element to form a second zeroth-order resonant mode supporting the fourth frequency band.

[0019] An electronic device provided in an embodiment of the present application includes an antenna assembly and a reference floor, wherein the antenna assembly includes a first radiator, a second radiator, a first resonant circuit, a matching circuit, a feed source, and a connecting element. The first radiator is spaced apart along the first edge of the reference floor, and includes a first grounding point, a feeding point, and a first open end; the second radiator is spaced apart along the first edge of the reference floor, and includes a second grounding point, a connecting point, and a second open end, with a first coupling gap between the second open end and the first open end; one end of the first resonant circuit is electrically connected to the connecting point, the other end of the first resonant circuit is grounded, and the first resonant circuit is short-circuited with respect to the third frequency band; the matching circuit also includes a first matching branch, one end of the first matching branch is grounded, and the first matching branch is short-circuited with respect to the third frequency band; the feed source is electrically connected to the feeding point; The connecting element is located in the gap between the first radiator and the first floor edge of the reference floor, one end of the connecting element is electrically connected to the connecting point, and one end of the connecting element is electrically connected to the feeding point; the feed source is also used to excite the connecting point to the feeding point, the first resonant circuit, the first floor edge and the first matching branch to form a first zeroth-order resonant mode that supports the third frequency band; the feed source is also used to excite the connecting point to the feeding point and the connecting element to form a second zeroth-order resonant mode that supports the fourth frequency band; in this way, compared to each antenna group component supporting one frequency band, the antenna component can support the third frequency band and the fourth frequency band, thereby supporting more frequency bands while being miniaturized.

[0020] In a third aspect, an embodiment of the present application provides an electronic device, the electronic device including an antenna assembly and a reference ground plane, the antenna assembly including:

[0021] a first radiator, the first radiator being spaced apart along a first edge of the reference floor, the first radiator comprising a first grounding point, a feeding point, and a first open end;

[0022] a second radiator, the second radiator being spaced apart along the first edge of the reference floor, the second radiator comprising a second grounding point, a connection point, and a second open end, wherein a first coupling gap is formed between the second open end and the first open end;

[0023] a matching circuit, the matching circuit comprising a first capacitive element, one end of the first capacitive element being electrically connected to the feeding point; the matching circuit further comprising a first matching branch, one end of the first matching branch being grounded, the first matching branch being short-circuited for the third frequency band;

[0024] a feed source electrically connected to the other end of the first capacitive element;

[0025] The feed source is used to excite the connection point to the second grounding point to form a second resonant mode supporting the second frequency band, and is also used to excite the connection point to the feeding point, the first resonant circuit, the first floor edge and the first matching branch to form a first zeroth-order resonant mode supporting the third frequency band.

[0026] An electronic device provided in an embodiment of the present application includes an antenna assembly and a reference floor. The antenna assembly includes a first radiator, a second radiator, a matching circuit and a feed source. The first radiator is arranged at intervals along the first edge of the reference floor. The first radiator includes a first grounding point, a feeding point and a first open end; the second radiator is arranged at intervals along the first edge of the reference floor. The second radiator includes a second grounding point, a connection point and a second open end, and a first coupling gap is formed between the second open end and the first open end; the matching circuit includes a first capacitive element, one end of the first capacitive element is electrically connected to the feeding point; the matching circuit also includes a first matching branch, one end of the first matching branch is grounded, and the first matching branch is short-circuited for a third frequency band; the feed source is electrically connected to the other end of the first capacitive element; the feed source is used to excite the connection point to the second grounding point to form a second resonant mode supporting the second frequency band, and is also used to excite the connection point to the feeding point, the first resonant circuit, the first floor edge and the first matching branch to form a first zeroth-order resonant mode supporting the third frequency band. Thus, compared to each antenna group component supporting one frequency band, the antenna component can support the second frequency band and the third frequency band, thereby supporting more frequency bands while being miniaturized.

[0027] In a fourth aspect, an embodiment of the present application provides an electronic device, comprising an antenna assembly and a reference ground plane, wherein the antenna assembly comprises:

[0028] a first radiator, the first radiator being spaced apart along a first edge of the reference floor, the first radiator comprising a first grounding point, a feeding point, and a first open end;

[0029] a second radiator, the second radiator being spaced apart along the first edge of the reference floor, the second radiator comprising a second grounding point, a connection point, and a second open end, wherein a first coupling gap is formed between the second open end and the first open end;

[0030] a first resonant circuit, one end of the first resonant circuit being electrically connected to the connection point, the other end of the first resonant circuit being grounded, and the first resonant circuit being capacitive with respect to a first frequency band; and

[0031] A matching circuit, the matching circuit further comprising a first matching branch, one end of the first matching branch being grounded, the first matching branch being short-circuited for the third frequency band;

[0032] The feed source is used to excite the branch from the connection point to the second grounding point and the first resonant circuit to form a first resonant mode supporting the first frequency band. The feed source is also used to excite the connection point to the feeding point, the first resonant circuit, the first floor edge and the first matching branch to form a first zeroth-order resonant mode supporting the third frequency band.

[0033] An electronic device provided in an embodiment of the present application includes an antenna assembly and a reference floor. The antenna assembly includes a first radiator, a second radiator, a matching circuit and a feed source. The first radiator is arranged at intervals along the first edge of the reference floor. The first radiator includes a first grounding point, a feeding point and a first open end; the second radiator is arranged at intervals along the first edge of the reference floor. The second radiator includes a second grounding point, a connection point and a second open end, and a first coupling gap is formed between the second open end and the first open end; a first resonant circuit, one end of the first resonant circuit is electrically connected to the connection point, the other end of the first resonant circuit is grounded, and the first resonant circuit is capacitive for the first frequency band; the matching circuit also includes a first matching branch, one end of the first matching branch is grounded, and the first matching branch is short-circuited for the third frequency band; the feed source is used to excite the connection point to the second grounding point to form a first resonant mode supporting the first frequency band, and the feed source is also used to excite the connection point to the feeding point, the first resonant circuit, the first floor edge and the first matching branch to form a first zeroth-order resonant mode supporting the third frequency band. Thus, compared to each antenna group component supporting one frequency band, the antenna component can support the first frequency band and the third frequency band, thereby supporting more frequency bands while being miniaturized.

[0034] In a fifth aspect, an embodiment of the present application provides an electronic device, the electronic device including an antenna assembly and a reference ground plane, the antenna assembly including:

[0035] a first radiator, the first radiator being spaced apart along a first edge of the reference floor, the first radiator comprising a first grounding point, a feeding point, and a first open end;

[0036] a second radiator, the second radiator being spaced apart along the first edge of the reference floor, the second radiator comprising a second grounding point, a connection point, and a second open end, wherein a first coupling gap is formed between the second open end and the first open end;

[0037] a first resonant circuit, one end of the first resonant circuit being electrically connected to the connection point, the other end of the first resonant circuit being grounded, and the first resonant circuit being capacitive in a first frequency band;

[0038] The matching circuit further comprises a first matching branch, one end of which is grounded;

[0039] a connecting element, the connecting element being located in a gap between the first radiator, the second radiator, and a first floor edge of the reference floor, one end of the connecting element being electrically connected to the connection point, and one end of the connecting element being electrically connected to the feeding point;

[0040] The feed source is used to excite the branch from the connection point to the second grounding point and the first resonant circuit to form a first resonant mode supporting the first frequency band. The feed source is also used to excite the connection point to the feeding point and the first connecting element to form a zero-order resonant mode supporting the fourth frequency band. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments.

[0042] Figure 1 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0043] Figure 2 This is a schematic diagram of the structural decomposition of an electronic device provided in an embodiment of the present application;

[0044] Figure 3 This is a simplified rear view of the electronic device provided in an embodiment of the present application with the rear cover removed;

[0045] Figure 4 This is a schematic diagram of the structure of an antenna assembly provided in Example 1 of this application. Figure 1 ;

[0046] Figure 5 This is a schematic diagram of the structure of an antenna assembly provided in Example 1 of this application. Figure 2 ;

[0047] Figure 6 This is a schematic diagram of the structure of an antenna assembly provided in Example 1 of this application. Figure 3 ;

[0048] Figure 7 This is a schematic diagram of the structure of an antenna assembly provided in Example 1 of this application. Figure 4 ;

[0049] Figure 8 This is a schematic diagram of the structure of an antenna assembly provided in Example 1 of this application. Figure 5 ;

[0050] Figure 9 This is a schematic diagram of the structure of an antenna assembly provided in Example 1 of this application. Figure 6 ;

[0051] Figure 10 This is a schematic diagram of the structure of an antenna assembly provided in Example 1 of this application. Figure 7 ;

[0052] Figure 11 This is a schematic structural diagram of an antenna assembly provided in Example 2 of the present application;

[0053] Figure 12 This is a schematic structural diagram of an antenna assembly provided in Example 3 of the present application;

[0054] Figure 13 This is a schematic structural diagram of an antenna assembly provided in Example 4 of the present application;

[0055] Figure 14 This is a schematic structural diagram of an antenna assembly provided in Example 5 of the present application;

[0056] Figure 15 This is an architectural diagram of a multi-frequency antenna design proposed in this application;

[0057] Figure 16 It is a partial schematic diagram of a mobile phone simulation model proposed in this application;

[0058] Figure 17 yes Figure 16 Provides S-parameter curves of the antenna component in the mobile phone simulation model;

[0059] Figure 18 yes Figure 16 Provides efficiency curves of antenna components in mobile phone simulation models;

[0060] Figure 19 yes Figure 16 The provided schematic diagram shows the current distribution of the antenna assembly in the mobile phone simulation model operating in the GPS-L1 frequency band;

[0061] Figure 20 yes Figure 16 The provided schematic diagram shows the current distribution of the antenna assembly in the mobile phone simulation model operating in the Wi-Fi 2.4G frequency band;

[0062] Figure 21 yes Figure 16 The provided schematic diagram shows the current distribution of the antenna assembly in the mobile phone simulation model operating in the N78 frequency band;

[0063] Figure 22 yes Figure 16 Provided is a schematic diagram of the current distribution of the antenna assembly in a mobile phone simulation model operating in the N79 / Wi-Fi 5G frequency band.

[0064] Description of Figure Numbers:

[0065] Electronic device 1000; antenna assembly 100; display screen 200; middle frame 300; middle plate 310; frame 320; top frame 321; first side frame 322; bottom frame 324; second side frame 323; back cover 400; reference floor 500; main board 600; sub-board 800; first radiator 11; second radiator 12; first resonant circuit 13; matching circuit 14; feed source 15; first ground point D1; feed point A; first open end E1; second Open end E2; connection point H; second grounding point D2; first coupling gap G1; first capacitive element 141; first floor point J1; second floor point J2; third floor point J3; fourth floor point J4; second capacitive element C2; second inductive element L2; third inductive element L3; first capacitive element C1; first inductive element L1; first matching branch 142; connection element 17; first connection element 171; second connection element 172; second capacitive element 173. DETAILED DESCRIPTION

[0066] The technical solution of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described in this application are only some embodiments, not all embodiments. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0067] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to mutually exclusive, independent, or alternative embodiments to other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0068] The terms "first," "second," and so on, in the specification and claims of this application and the accompanying drawings are used to distinguish between different objects, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a component or device comprising one or more parts is not limited to the one or more parts listed, but may optionally include one or more parts that are not listed but are inherent to the illustrated product, or one or more parts that should be present based on the described functionality.

[0069] See also Figure 1 , Figure 11 is a schematic diagram of the structure of an electronic device 1000 provided in an embodiment of the present application. Electronic device 1000 includes, but is not limited to, a mobile phone, tablet computer, laptop computer, computer, wearable device, drone, robot, digital camera, and other devices with communication functions. This embodiment of the present application uses a mobile phone as an example, and other electronic devices can refer to this embodiment.

[0070] See also Figure 2 , Figure 2 : is a partially exploded schematic diagram of the electronic device 1000 provided in an embodiment of the present application. The electronic device 1000 includes an antenna assembly 100. Taking the electronic device 1000 as a mobile phone as an example, the working environment of the antenna assembly 100 is illustrated. The electronic device 1000 includes a display screen 200, a middle frame 300 and a back cover 400 arranged in sequence along the thickness direction. Among them, the middle frame 300 includes a middle plate 310 and a frame 320. The frame 320 is arranged around the display screen 200, the middle plate 310 and the back cover 400. The frame 320 is a conductive frame, such as a metal frame. A receiving space is formed between the display screen 200 and the middle plate 310, and between the middle plate 310 and the back cover 400 to accommodate devices such as a main board 600, a camera module, a receiver module, a battery 700, a sub-board 800 and various sensors. One side of the frame 320 along the thickness direction is connected to the edge of the display screen 200, and the other side of the frame 320 along the thickness direction is connected to the edge of the back cover 400 to form a complete appearance structure of the electronic device 1000. In this embodiment, the frame 320 and the middle plate 310 are an integral structure, for example, formed by processing a metal plate. The frame 320 and the back cover 400 are separate structures. The above is the working environment of the antenna assembly 100 using a mobile phone as an example, but the antenna assembly 100 of the present application is not limited to the above working environment.

[0071] See also Figure 3 , Figure 3This is a partial back view of the electronic device 1000 provided in an embodiment of the present application, with the back cover 400 removed. The frame 320 includes a top frame 321, a first side frame 322, a bottom frame 324, and a second side frame 323, which are connected in sequence. The top frame 321 and the bottom frame 324 are arranged opposite each other, and the first side frame 322 and the second side frame 323 are connected between the top frame 321 and the bottom frame 324 and are arranged opposite each other. Among them, the top frame 321 is the side away from the ground when the user holds the electronic device 1000 and uses it in portrait mode (screen facing the user), and the bottom frame 324 is the side facing the ground when the user holds the electronic device 1000 and uses it in portrait mode (screen facing the user). The first side frame 322 is the left side when the user holds the electronic device 1000 and uses it in portrait mode (screen facing the user). The second side frame 323 is the right side when the user holds the electronic device 1000 and uses it in portrait mode (screen facing the user). Of course, the first side frame 322 can also be the right side when the user holds the electronic device 1000 and uses it in portrait mode (screen facing the user). The second side frame 323 is the left side when the user holds the electronic device 1000 in his hand (with the screen facing the user).

[0072] Optionally, the top frame 321 is a straight frame, and the first side frame 322 and the second side frame 323 both have a straight frame in the middle, with curved frames at both ends. The bending angles of the curved frames at both ends of the first side frame 322 are both close to or equal to 90°. The bending angles of the curved frames at both ends of the second side frame 323 are both close to or equal to 90°. The curved frames are curved in an arc shape. The bottom frame 324 is a straight frame.

[0073] See also Figure 3 and Figure 4 Electronic device 1000 also includes a reference floor 500. Reference floor 500 is located within the area enclosed by frame 320. Reference floor 500 is generally rectangular in shape. Due to the need to locate components or accommodate other structures within the mobile phone, various slots and holes are provided along the reference ground edge of reference floor 500. Reference floor 500 includes, but is not limited to, the metal alloy portion of midplane 310 and the reference ground metal portion of the circuit board (including mainboard 600 and sub-board 800).

[0074] For details, please refer to Figure 3 and Figure 4 Reference floor 500 includes a second floor edge 520, a first floor edge 510, a third floor edge 530, and a fourth floor edge 540, which are connected end to end. The second floor edge 520 is disposed opposite the top frame 321. The first floor edge 510 is disposed opposite the first side frame 322. The third floor edge 530 is disposed opposite the second side frame 323. The fourth floor edge 540 is disposed opposite the bottom frame 324.

[0075] For ease of description, the length direction of the electronic device 1000 and the direction toward the top frame 321 are defined as the +Y direction, the length direction of the electronic device 1000 and the direction toward the bottom frame 324 are defined as the -Y direction, the width direction of the electronic device 1000 and the direction toward the first side frame 322 are defined as the +X direction, and the width direction of the electronic device 1000 and the direction toward the second side frame 323 are defined as the -X direction. The thickness direction of the electronic device 1000 and the direction toward the display screen 200 are defined as the +Z direction, and the width direction of the electronic device 1000 and the direction toward the back cover are defined as the -Z direction.

[0076] The specific structures of the electronic device 1000 and the antenna assembly 100 provided in the first embodiment are described below with reference to the accompanying drawings.

[0077] See also Figure 3 and Figure 4 The antenna assembly 100 includes a first radiator 11 , a second radiator 12 , a first resonant circuit 13 , a matching circuit 14 and a feed source 15 .

[0078] This application does not specifically limit the material of the first radiator 11. Optionally, the first radiator 11 can be made of a conductive material, including but not limited to metals, alloys, and other conductive materials. This application does not specifically limit the shape of the first radiator 11. For example, the shape of the first radiator 11 can include but is not limited to a strip, sheet, rod, coating, or film. Figure 3 The first radiator 11 shown is merely an example and does not limit the shape of the first radiator 11 provided in this application. In this embodiment, the first radiator 11 is strip-shaped. This application does not limit the extension path of the first radiator 11. Optionally, the first radiator 11 may extend along a straight line, a curve, or a bend line. The first radiator 11 may be a line of uniform width along its extension path, or may be a strip of varying width, such as a strip with a gradually varying width or a widened area.

[0079] This application does not specifically limit the form of the first radiator 11. Optionally, the form of the first radiator 11 includes, but is not limited to, a metal frame 320, a metal frame embedded in the plastic frame 320, a metal radiator located in or on the surface of the frame 320, a flexible printed circuit board antenna formed on a flexible printed circuit board (FPC), a laser direct structured antenna using laser direct structure (LDS), a printed direct structured antenna using print direct structure (PDS), a conductive sheet antenna (e.g., a metal bracket antenna), etc. In this embodiment, the first radiator 11 is taken as a part of the metal frame 320 of the electronic device 1000 as an example.

[0080] The present application does not impose any specific limitation on the specific location of the first radiator 11 on the metal frame 320. For example, the first radiator 11 can be disposed on the top frame 321, the first side frame 322, the second side frame 323, or the bottom frame 324.

[0081] This application takes the first radiator 11 located at the first side frame 322 as an example. The first radiators 11 are arranged at intervals along the first floor edge 510. The extension direction of the first radiator 11 is aligned with the extension direction of the first floor edge 510.

[0082] See also Figure 3 and Figure 4 The first radiator 11 includes a first grounding point D1, a feeding point A and a first open end E1 that are spaced apart.

[0083] For details, please refer to Figure 3 and Figure 4 The first radiator 11 is a section of the metal frame 320. The feed point A is a portion of the first radiator 11. To facilitate connection between the feed point A and the feed source 15, a small protrusion can be provided on the inner wall of the first radiator 11 at the location of the feed point A to electrically connect the feed source 15 on the mainboard 600 via a feed spring. Of course, in other embodiments, the small protrusion can be omitted at the location of the feed point A.

[0084] Optional, see Figure 3 and Figure 4 The first open end E1 and the first grounding point D1 are the two ends of the first radiator 11. The feeding point A is located adjacent to the first open end E1. The distance between the feeding point A and the first open end E1 is smaller than the distance between the feeding point A and the first grounding point D1.

[0085] See also Figure 3 and Figure 4The second radiator 12 includes a second opening end E2, a connection point H, and a second grounding point D2 which are arranged in sequence.

[0086] Optionally, at least a portion of the second radiator 12 is located on the first side frame 322 . In this embodiment, the entire second radiator 12 is located on the first side frame 322 .

[0087] Optionally, the second open end E2 and the second grounding point D2 are two ends of the second radiator 12. The connection point H is located relatively close to the second open end E2. The distance between the connection point H and the second open end E2 is smaller than the distance between the connection point H and the second grounding point D2.

[0088] See also Figure 3 and Figure 4 A first coupling gap G1 is formed between the second opening end E2 and the first opening end E1. The first radiator 11 and the second radiator 12 are coupled via the first coupling gap G1.

[0089] The first coupling gap G1 is also an insulating gap, and its width is 0.5 to 2 mm, but is not limited to this size. The first radiator 11 and the second radiator 12 can generate capacitive coupling through the first coupling gap G1. Optionally, the first radiator 11 and the second radiator 12 can be considered as two parts formed by the frame 320 separated by the first coupling gap G1. The term "capacitive coupling" refers to the electric field generated by the first coupling gap G1 between the first radiator 11 and the second radiator 12. The signal from the first radiator 11 can be transmitted to the second radiator 12 through the electric field, so that the first radiator 11 and the second radiator 12 can achieve electrical signal conduction even when they are not directly electrically connected.

[0090] The matching circuit 14 is electrically connected between the feed point A and the feed source 15 . The matching circuit 14 is used to achieve impedance matching between a port of the feed source 15 and a port of the feed point A of the first radiator 11 .

[0091] See also Figure 5The matching circuit 14 includes at least a first capacitive element 141. One end of the first capacitive element 141 is electrically connected to the feed point A. The feed source 15 is electrically connected to the other end of the first capacitive element 141. The first capacitive element 141 includes a first capacitive element. Optionally, the first capacitive element is a small capacitor, and the capacitance value of the first capacitive element is 0 to 2 pF. For example, the capacitance value of the first capacitive element is any one of 0.1 pF, 0.2 pF, 0.3 pF, 0.4 pF, 0.5 pF, 0.6 pF, 0.7 pF, 0.8 pF, 0.9 pF, 1 pF, 1.1 pF, 1.2 pF, 1.3 pF, 1.4 pF, 1.5 pF, 1.6 pF, 1.7 pF, 1.8 pF, 1.9 pF, and 2 pF, or any capacitance value between any two of them.

[0092] The matching circuit 14 further includes at least one of a capacitor, an inductor, a resistor, and the like.

[0093] The electrical connection described in this application includes direct electrical connection between two structures, or indirect electrical connection through other components. In this embodiment, the feed source 15 and the feeding point A are indirectly electrically connected through RF transmission lines, feeding springs, etc.

[0094] Feed source 15 includes, but is not limited to, an RF transceiver chip, an RF front-end module, and the like. Specifically, feed source 15 is configured to provide at least an RF signal in a first frequency band. Optionally, when feed source 15 is excited, first radiator 11 functions as a primary radiating branch, and second radiator 12 functions as a parasitic radiating branch.

[0095] One end of the first resonant circuit 13 is electrically connected to the connection point H, and the other end of the first resonant circuit 13 is grounded. The first resonant circuit 13 includes at least one of a capacitor, an inductor, a resistor, and the like.

[0096] This application does not specifically limit the size of the first frequency band. Optionally, the first frequency band includes, but is not limited to, at least one of the LB band (less than 1 GHz), the MHB band (1-3 GHz), the UHB band (greater than 3 GHz), the Wi-Fi band, and the GPS band. For example, the first frequency band includes the GPS-L1 band.

[0097] See also Figure 5 , the first resonant circuit 13 is capacitive for the first frequency band. Optionally, the first resonant circuit 13 includes at least a first capacitive component. The first capacitive component is capacitive for the first frequency band.

[0098] This indicates that the maximum frequency of the first frequency band is lower than the resonant frequency of the first resonant circuit 13. The first resonant circuit 13 is capacitive in the first frequency band, indicating that the total impedance of the first resonant circuit 13 is dominated by the capacitive reactance (i.e., |XC|>|XL|), manifested as: the current phase leads the voltage phase (capacitive impedance characteristic). At this time, the first resonant circuit 13 is equivalent to a capacitive element.

[0099] In the above antenna assembly, the branch between the second ground point D2 and the connection point H, and the first resonant circuit 13, form a left-handed transmission line structure for the first frequency band. Specifically, for the first frequency band, the first resonant circuit 13 is equivalent to the series capacitance of the left-handed transmission line structure, while the branch between the second ground point D2 and the connection point H is equivalent to the parallel inductance of the left-handed transmission line structure for the first frequency band. Therefore, the branch between the second ground point D2 and the connection point H, and the first resonant circuit 13, form the first left-handed antenna 10 that supports the first frequency band.

[0100] See also Figure 4 The first floor edge 510 includes a first floor point J1 and a second floor point J2. The first floor point J1 is where the second ground point D2 is electrically connected to the reference floor 500. The second floor point J2 is where the first resonant circuit 13 is electrically connected to the reference floor 500.

[0101] The feed source 15 is used to excite the branch between the connection point H and the second ground point D2 and the first resonant circuit 13 to form a first resonant mode supporting the first frequency band. The first resonant mode is a left-handed mode supporting the first frequency band. In the left-handed antenna mode, current is distributed between the branch between the second ground point D2 and the connection point H, the first resonant circuit 13, and the first floor point J1 to the second floor point J2 of the first floor edge 510, forming a circular current with relatively uniform current intensity.

[0102] The electrical length of the second radiator 12 is less than 1 / 4 of the wavelength of the first frequency band. Further, the electrical length of the second radiator 12 is greater than or equal to 1 / 8 of the wavelength of the first frequency band. The wavelength refers to the medium wavelength.

[0103] In the above antenna assembly, the branch between the first ground point D1 and the feed point A, as well as the first capacitive element 141, form a left-handed transmission line structure for the second frequency band. Specifically, for the second frequency band, the first capacitive element 141 is equivalent to the series capacitor of the left-handed transmission line structure, while the branch between the first ground point D1 and the feed point A is equivalent to the parallel inductor of the left-handed transmission line structure for the second frequency band. Therefore, the branch between the first ground point D1 and the feed point A, as well as the first capacitive element 141, form a second left-handed antenna 20 that supports the second frequency band.

[0104] See also Figure 4The first floor edge 510 further includes a third floor point J3 and a fourth floor point J4. The third floor point J3 is where the feed source 15 is electrically connected to the reference floor 500. The fourth floor point J4 is where the first ground point D1 is electrically connected to the reference floor 500.

[0105] The feed source 15 is further configured to provide an excitation signal in a second frequency band.

[0106] The feed source 15 is also used to excite the feed point A to the first ground point D1 to form a second resonant mode supporting the second frequency band. The second resonant mode is a left-handed mode supporting the second frequency band. In the left-handed antenna mode, the current is distributed through the branch between the first ground point D1 and the feed point A, the first capacitive element 141, and the third floor point J3 of the first floor edge 510 to the fourth floor edge, forming a circular current with relatively uniform current intensity.

[0107] The present application does not specifically limit the size of the second frequency band. Optionally, the second frequency band includes, but is not limited to, at least one of the LB band (less than 1 GHz), the MHB band (1-3 GHz), the UHB band (greater than 3 GHz), the Wi-Fi band, and the GPS band.

[0108] The center frequency of the second frequency band can be greater than or less than the center frequency of the first frequency band. For example, the first frequency band is the LB band, and the second frequency band is the MHB band. For another example, the first frequency band is the GPS-L1 band, and the second frequency band is the Wi-Fi 2.4G band.

[0109] The electrical length of the first radiator 11 is less than 1 / 4 wavelength of the second frequency band. Further, the electrical length of the first radiator 11 is greater than or equal to 1 / 8 wavelength of the second frequency band. The wavelength refers to the medium wavelength.

[0110] The present application designs the structure of the antenna assembly, specifically designing a matching circuit 14 including a first capacitive element 141 and a first resonant circuit 13 that exhibits capacitive reactance for a first frequency band, thereby forming a first left-handed antenna 10 supporting the first frequency band and a second left-handed antenna 20 supporting a second frequency band. The size of the first frequency band differs from that of the second frequency band, and the current distribution position in the first frequency band differs from that in the second frequency band, thereby improving the isolation between the first and second frequency bands.

[0111] The electronic device 1000 provided in an embodiment of the present application includes an antenna assembly 100, which includes a first radiator 11, a second radiator 12, a first resonant circuit 13, a matching circuit 14 and a feed source 15; the first radiator 11 includes a first grounding point D1, a feeding point A and a first open end E1; the second radiator 12 includes a second grounding point D2, a connection point H and a second open end E2, and a first coupling gap G1 is formed between the second open end E2 and the first open end E1; one end of the first resonant circuit 13 is electrically connected to the connection point H, the other end of the first resonant circuit 13 is grounded, and the second end of the first resonant circuit 13 is electrically connected to the connection point H. A resonant circuit 13 is capacitive for a first frequency band; a matching circuit 14 includes a first capacitive element 141, one end of which is electrically connected to a feed point A; a feed source 15 is electrically connected to the other end of the first capacitive element 141, and the feed source 15 is used to excite the connection point H to the second ground point D2 to form a first resonant mode supporting the first frequency band, and to excite the feed point A to the first ground point D1 to form a second resonant mode supporting the second frequency band; thus, compared to each antenna group component supporting one frequency band, the antenna component 100 can support both the first and second frequency bands, thereby supporting more frequency bands while being miniaturized.

[0112] See also Figure 6 , the antenna assembly 100 also includes a second resonant circuit 16.

[0113] One end of the second resonant circuit 16 is electrically connected to the connection point H, and the other end of the second resonant circuit 16 is grounded. The second resonant circuit 16 is short-circuited for the second frequency band, allowing signals in the second frequency band to be grounded through the second resonant circuit 16 without being grounded through the first resonant circuit 13. The second resonant circuit 16 is open-circuited for the first frequency band to prevent the first frequency band from being grounded through the second resonant circuit 16.

[0114] The second resonant circuit 16 is open circuit in the first frequency band. The second resonant circuit 16 presents high impedance (extremely high impedance) in the first frequency band, which is equivalent to preventing current from passing through, similar to the disconnected state, and is used to block the signal in the first frequency band.

[0115] The second resonant circuit 16 is short-circuited in the second frequency band. The second resonant circuit 16 presents low impedance (extremely small impedance) in the second frequency band, which is equivalent to allowing current to flow freely, similar to a direct connection state, for allowing signals in the second frequency band to pass unimpeded.

[0116] The second resonant circuit 16 includes an inductor device and / or a capacitor device, etc.

[0117] Optionally, the second resonant circuit 16 includes a parallel LC circuit, and the resonant frequency of the parallel LC circuit is the center frequency of the first frequency band. At the center frequency of the first frequency band, the inductive reactance (XL) and the capacitive reactance (XC) are equal and opposite in phase, resulting in a maximum combined impedance (open circuit).

[0118] Optionally, the second resonant circuit 16 further includes a series LC circuit, the resonant frequency of the series LC circuit being the center frequency of the second frequency band. At the center frequency of the second frequency band, the inductive reactance (XL) and the capacitive reactance (XC) cancel each other out, resulting in a minimum combined impedance (short circuit).

[0119] The present application does not impose any specific limitation on the structure of the second resonant circuit 16 .

[0120] For example, see Figure 7 The second resonant circuit 16 includes a second capacitor C2, a second inductor L2, and a third inductor L3.

[0121] One end of the second capacitor C2 and one end of the second inductor L2 are both electrically connected to the connection point H. One end of the third inductor L3 is electrically connected to the other end of the second capacitor C2 and the other end of the second inductor L2. The other end of the third inductor L3 is grounded. The second inductor L2 and the second capacitor C2 are configured to disconnect the first frequency band. The resonant frequency of the resonant circuit formed by the second inductor L2 and the second capacitor C2 is the center frequency of the first frequency band.

[0122] The second capacitor C2 and the third inductor L3 are used to short-circuit the second frequency band. The resonant frequency of the resonant circuit formed by the third inductor L3 and the second capacitor C2 is the center frequency of the second frequency band.

[0123] Optionally, the second capacitive device C2 is a small capacitor, and the capacitance value of the second capacitive device C2 is 0-2 pF. For example, the capacitance value of the second capacitive device C2 is any one of 0.1 pF, 0.2 pF, 0.3 pF, 0.4 pF, 0.5 pF, 0.6 pF, 0.7 pF, 0.8 pF, 0.9 pF, 1 pF, 1.1 pF, 1.2 pF, 1.3 pF, 1.4 pF, 1.5 pF, 1.6 pF, 1.7 pF, 1.8 pF, 1.9 pF, and 2 pF, or any capacitance value in between.

[0124] Optionally, the inductance of the second inductor L2 is 10-20 nH. For example, the inductance of the second inductor L2 is any one of 10 nH, 11 nH, 12 nH, 13 nH, 14 nH, 15 nH, 16 nH, 17 nH, 18 nH, 19 nH, and 20 nH, or any two thereof.

[0125] Optionally, the inductance of the third inductor L3 is 6-12 nH. For example, the inductance of the third inductor L3 is any one of 6 nH, 7 nH, 8 nH, 8.1 nH, 8.2 nH, 8.3 nH, 8.4 nH, 8.5 nH, 8.6 nH, 8.7 nH, 8.8 nH, 8.9 nH, 9 nH, 9.1 nH, 9.2 nH, 9.3 nH, 9.4 nH, 9.5 nH, 9.6 nH, 9.7 nH, 9.8 nH, 9.9 nH, 10 nH, 11 nH, and 12 nH, or any inductance value in between.

[0126] Optionally, both the first radiator 11 and the second radiator 12 are disposed along the first floor edge 510 of the reference floor 500 .

[0127] Furthermore, the first resonant circuit 13 is short-circuited for the third frequency band, so that the third frequency band can be grounded through the first resonant circuit 13 , thereby facilitating the formation of an open-loop structure for the third frequency band.

[0128] The first resonant circuit 13 is short-circuited in the third frequency band, indicating that the first resonant circuit 13 reaches a series resonance state at this time, which is manifested as: the inductive reactance XL and the capacitive reactance XC are equal in magnitude and opposite in phase, canceling each other out; the total impedance is close to zero (the theoretical value is pure resistance, but the actual value is affected by component loss); the current reaches its maximum value, and the signal passes unimpeded.

[0129] Optionally, the resonant frequency of the first resonant circuit 13 is at or close to the center frequency of the third frequency band, so that the first resonant circuit 13 is short-circuited in the third frequency band.

[0130] The present application does not impose any specific limitation on the structure of the first resonant circuit 13 .

[0131] For example, see Figure 7 The first resonant circuit 13 includes a first capacitor C1 and a first inductor L1.

[0132] One end of the first capacitor C1 is electrically connected to the connection point H. One end of the first inductor L1 is electrically connected to the other end of the first capacitor C1. The other end of the first inductor L1 is grounded. The first capacitor C1 and the first inductor L1 are capacitive in the first frequency band.

[0133] The sizes of the first capacitor C1 and the first inductor L1 can be designed according to the resonant frequency formula (1) of the first resonant circuit 13 as follows:

[0134]

[0135] In formula (1), L is the inductance of the first inductor L1, C is the capacitance of the first capacitor C1, and f1 is the resonant frequency of the first resonant circuit 13. For the first resonant circuit 13, f1 is the center frequency of the third frequency band.

[0136] Optionally, the first inductor L1 is a small inductor, and the inductance of the first inductor L1 is 2 to 6 nH. For example, the inductance of the first inductor L1 is 2 nH, 2.1 nH, 2.2 nH, 2.3 nH, 2.4 nH, 2.5 nH, 2.6 nH, 2.7 nH, 2.8 nH, 2.9 nH, 3 nH, 3.1 nH, 3.2 nH, 3.3 nH, 3.4 nH, 3.5 nH, 3.6 nH, 3.7 nH, 3.8 nH, 3.9 nH, 4 The inductance value is any one of nH, 4.1nH, 4.2nH, 4.3nH, 4.4nH, 4.5nH, 4.6nH, 4.7nH, 4.8nH, 4.9nH, 5nH, 5.1nH, 5.2nH, 5.3nH, 5.4nH, 5.5nH, 5.6nH, 5.7nH, 5.8nH, 5.9nH, and 6nH, or any two thereof.

[0137] See also Figure 8 The matching circuit 14 further includes a first matching branch 142. One end of the first matching branch 142 is grounded. The other end of the first matching branch 142 is electrically connected to an end of the first capacitive element 141 away from the feeding point A. The first matching branch 142 is short-circuited for the third frequency band.

[0138] First matching branch 142 includes, but is not limited to, a series LC resonant circuit comprising a fifth capacitor and a fourth inductor. The resonant frequency of first matching branch 142 is the center frequency of the third frequency band, thereby short-circuiting the third frequency band. The capacitance of the fifth capacitor and the inductance of the fourth inductor can be calculated using formula (1).

[0139] The capacitance of the fifth capacitor is 0-2 pF, and the inductance of the fourth inductor is 2-6 nH.

[0140] This application does not specifically limit the size of the third frequency band. Optionally, the third frequency band includes, but is not limited to, at least one of the LB band (less than 1 GHz), the MHB band (1-3 GHz), the UHB band (greater than 3 GHz), the Wi-Fi band, and the GPS band. For example, the first frequency band is the LB band, the second frequency band is the MHB band, and the third frequency band is the UHB band. For another example, the first frequency band is the GPS-L1 band, the second frequency band is the Wi-Fi 2.4G band, and the third frequency band is the UHB band.

[0141] Furthermore, the first capacitive element 141 and the first matching branch 142 can also serve as a part of the matching circuit 14 when the feed source 15 is working.

[0142] For the third frequency band, the first resonant circuit 13, the branch from the connection point H to the feed point A, the first matching branch 142, and the portion between the second floor point J2 and the third floor point J3 of the first floor edge 510 form a first open-ring structure. The opening of the first open-ring structure is the first coupling gap G1.

[0143] The feed source 15 is further configured to provide an excitation signal in a third frequency band.

[0144] The feed source 15 is further used to excite the first resonant circuit 13 , the connection point H to the feeding point A, the first matching branch 142 , and the first floor edge 510 to form a first zeroth-order resonant mode supporting the third frequency band.

[0145] The current of the first zero-order resonant mode is distributed in the branches between the second open end E2 and the connection point H, the first resonant circuit 13, the branches between the second floor point J2 and the third floor point J3 of the first floor edge 510, the first matching branch 142, and the branches between the feeding point A and the first open end E1, forming a U-shaped current.

[0146] The equivalent electrical length of the current path of the first zero-order resonant mode is equal to or close to half the wavelength of the third frequency band. The equivalent electrical length of the current path of the first zero-order resonant mode includes the electrical length between the second open end E2 and the connection point H, the equivalent electrical length of the first resonant circuit 13, the electrical length between the second floor point J2 and the third floor point J3 of the first floor edge 510, the equivalent electrical length of the first matching branch 142, and the electrical length from the feeding point A to the first open end E1. The sum of the length is equal to or close to half the wavelength of the third frequency band.

[0147] See also Figure 9 , the antenna assembly 100 further includes a connecting element 17 .

[0148] See also Figure 9The connecting element 17 is located in the gap between the first radiator 11 , the second radiator 12 and the first floor edge 510 of the reference floor 500 .

[0149] See also Figure 9 One end of the connecting element 17 is electrically connected to the connecting point H, and one end of the connecting element 17 is electrically connected to the feeding point A.

[0150] The feed source 15 is used to provide an excitation signal in the fourth frequency band.

[0151] The feed source 15 is further used to excite the connection point H to the feeding point A and the first connection element 17 to form a second zeroth-order resonance mode supporting the fourth frequency band.

[0152] See also Figure 9 The current of the second zero-order resonant mode is distributed in the branch between the second open end E2 and the connection point H, the connecting element 17, and the branch between the feeding point A and the first open end E1, forming a U-shaped current.

[0153] The equivalent electrical length of the current path of the second zero-order resonant mode is equal to or close to half the wavelength of the fourth frequency band. The equivalent electrical length of the current path of the second zero-order resonant mode, including the sum of the electrical length between the second open end E2 and the connection point H, the equivalent electrical length of the connecting element 17, and the electrical length between the feeding point A and the first open end E1, is equal to or close to half the wavelength of the fourth frequency band.

[0154] This application does not specifically limit the size of the fourth frequency band. Optionally, the fourth frequency band includes but is not limited to at least one of the LB band (less than 1 GHz), the MHB band (1-3 GHz), the UHB band (greater than 3 GHz), the Wi-Fi band, the GPS band, etc. For example, the first frequency band is the LB band, the second frequency band is the MHB band, the third frequency band is the N78 band, and the fourth frequency band is the N79 band or the Wi-Fi 5G band. For another example, the first frequency band is the GPS-L1 band, the second frequency band is the Wi-Fi 2.4G band, the third frequency band is the N78 band, and the fourth frequency band is the N79 band or the Wi-Fi 5G band.

[0155] The specific structure of the connecting element 17 is described below with reference to the accompanying drawings.

[0156] In the first alternative embodiment, see Figure 10The connecting element 17 includes a first connecting member 171, a second connecting member 172, and a second capacitive element 173. One end of the first connecting member 171 is connected to the connection point H, and the other end of the first connecting member 171 is electrically connected to one end of the second capacitive element 173. One end of the second connecting member 172 is connected to the feeding point A. The other end of the second connecting member 172 is electrically connected to the other end of the second capacitive element 173.

[0157] Optionally, the first connector 171 includes, but is not limited to, at least one of an electrical connection line, a metal segment, and a conductive spring. In this application, the first connector 171 is taken as an example of an electrically connected first conductive spring 175 and a first metal segment 176. The first conductive spring 175 is electrically connected to the connection point H, and the first metal segment 176 is connected between the other end of the first conductive spring 175 and one end of the second capacitive element 173.

[0158] Optionally, the second connector 172 includes, but is not limited to, at least one of an electrical connection line, a metal segment, and a conductive spring. In this application, the second connector 172 is exemplified by a second conductive spring 177 and a second metal segment 178 that are electrically connected. The second conductive spring 177 is electrically connected to the connection point H, and the second metal segment 178 is connected between the other end of the second conductive spring 177 and the other end of the second capacitive element 173.

[0159] Optionally, the second capacitive element 173 includes a fourth capacitive element or a coupling capacitor gap. Optionally, when the second capacitive element 173 is a capacitive element, one end of the capacitive element is electrically connected to the second connector 172, and the other end of the capacitive element is electrically connected to the first connector 171. When the second capacitive element 173 is a coupling capacitor gap, a smaller coupling gap is formed between the first connector 171 and the second connector 172 to form the second capacitive element 173.

[0160] In the second alternative implementation, please refer to Figure 10 The connecting element 17 includes a first connecting member 171 and a second capacitive member 173. One end of the first connecting member 171 is connected to the connection point H, and the other end of the first connecting member 171 is electrically connected to one end of the second capacitive member 173. The other end of the second capacitive member 173 is electrically connected to the feeding point A.

[0161] Optionally, the first connector 171 includes, but is not limited to, at least one of an electrical connection line, a metal segment, a conductive spring, etc. In this application, the first connector 171 is taken as an example of a metal segment integrally interconnected with the second radiator 12. The first connector 171 and the second radiator 12 can be formed on the same metal plate by CNC milling or the like.

[0162] Optionally, the second capacitive element 173 includes a capacitor or a coupling capacitor gap. When the second capacitive element 173 is a capacitor, one end of the capacitor is electrically connected to the first connector 171, and the other end of the capacitor is electrically connected to the feed point A. The capacitance of the second capacitive element 173 is less than or equal to 0.5 pF, and the second capacitive element 173 has substantially no effect on frequency bands less than the fourth frequency band (the first frequency band, the second frequency band, and the third frequency band).

[0163] When the second capacitive element 173 is a coupling capacitor gap, a smaller coupling gap is formed between the first connecting member 171 and the feeding point A to form the second capacitive element 173 .

[0164] Optionally, the center frequency of the fourth frequency band is greater than the center frequency of the third frequency band.

[0165] In this embodiment, the branch between connection point H and feed point A and connecting element 17 form a second open-loop structure. Because the branch between connection point H and feed point A needs to be compatible with the first zeroth-order mode designed to support the third frequency band, a second capacitive element 173 is designed in this embodiment to shorten the physical length of the branch between connection point H and feed point A. This allows the second open-loop structure formed by the branch between connection point H and feed point A and second capacitive element 173 to support a higher frequency band, such as the fourth frequency band. In other words, second capacitive element 173 is used to enable the branch between connection point H and feed point A and connecting element 17 to form a second zeroth-order resonant mode that supports a higher frequency band.

[0166] Specifically, the sum of the electrical length between the second open end E2 and the connection point H, the equivalent electrical length of the first connecting member 171, and the equivalent electrical length of the second capacitive element 173 is or is close to 1 / 2 wavelength of the fourth frequency band, so as to facilitate the branch between the connection point H and the feeding point A and the connecting element 17 to form a second zero-order resonant mode supporting the fourth frequency band.

[0167] In the third alternative implementation, please refer to Figure 10 The connecting element 17 includes a second connecting member 172 and a second capacitive element 173. One end of the second connecting member 172 is connected to the feeding point A, and the other end of the second connecting member 172 is electrically connected to one end of the second capacitive element 173. The other end of the second capacitive element 173 is electrically connected to the connection point H.

[0168] Optionally, the second connector 172 includes, but is not limited to, at least one of an electrical connection wire, a metal segment, a conductive spring, etc. In this application, the second connector 172 is taken as an example of a metal segment integrally interconnected with the first radiator 11. The second connector 172 and the first radiator 11 can be formed on the same metal plate by CNC milling or the like.

[0169] Optionally, the second capacitive element 173 includes a capacitor or a coupling capacitor gap. When the second capacitive element 173 is a capacitor, one end of the capacitor is electrically connected to the second connector 172, and the other end of the capacitor is electrically connected to the connection point H. When the second capacitive element 173 is a coupling capacitor gap, a smaller coupling gap is formed between the second connector 172 and the connection point H to form the second capacitive element 173.

[0170] Optionally, the center frequency of the fourth frequency band is greater than the center frequency of the third frequency band.

[0171] In this embodiment, the branch between connection point H and feed point A and connecting element 17 form a second open-loop structure. Because the branch between connection point H and feed point A needs to be compatible with the first zeroth-order mode designed to support the third frequency band, a second capacitive element 173 is designed in this embodiment to shorten the physical length of the branch between connection point H and feed point A. This allows the second open-loop structure formed by the branch between connection point H and feed point A and second capacitive element 173 to support a higher frequency band, such as the fourth frequency band. In other words, second capacitive element 173 is used to enable the branch between connection point H and feed point A and connecting element 17 to form a second zeroth-order resonant mode that supports a higher frequency band.

[0172] Specifically, the sum of the electrical length between the second open end E2 and the connection point H, the equivalent electrical length of the second connecting member 172, and the equivalent electrical length of the second capacitive element 173 is or is close to 1 / 2 wavelength of the fourth frequency band, so as to facilitate the branch between the connection point H and the feeding point A and the connecting element 17 to form a second zero-order resonant mode supporting the fourth frequency band.

[0173] See also Figure 11 The specific structures of an antenna assembly 100 and an electronic device 1000 having the antenna assembly 100 provided in the second embodiment are described below with reference to the accompanying drawings.

[0174] See also Figure 11 The antenna assembly 100 includes a first radiator 11 , a second radiator 12 , a first resonant circuit 13 , a matching circuit 14 and a feed source 15 .

[0175] The first radiators 11 are spaced apart along a first edge of the reference floor 500. The first radiators 11 include a first grounding point D1, a feeding point A, and a first open end E1.

[0176] The second radiators 12 are spaced apart along the first edge of the reference floor 500. The second radiators 12 include a second grounding point D2, a connection point H, and a second open end E2. A first coupling gap G1 is formed between the second open end E2 and the first open end E1.

[0177] One end of the first resonant circuit 13 is electrically connected to the connection point H, and the other end of the first resonant circuit 13 is grounded. The first resonant circuit 13 includes at least one of a capacitor, an inductor, a resistor, and the like.

[0178] Furthermore, the first resonant circuit 13 is short-circuited for the third frequency band, so that the third frequency band can be grounded through the first resonant circuit 13 , thereby facilitating the formation of an open-loop structure for the third frequency band.

[0179] The first resonant circuit 13 is short-circuited in the third frequency band, indicating that the first resonant circuit 13 reaches a series resonance state at this time, which is manifested as: the inductive reactance XL and the capacitive reactance XC are equal in magnitude and opposite in phase, canceling each other out; the total impedance is close to zero (the theoretical value is pure resistance, but the actual value is affected by component loss); the current reaches its maximum value, and the signal passes unimpeded.

[0180] Optionally, the resonant frequency of the first resonant circuit 13 is at or close to the center frequency of the third frequency band, so that the first resonant circuit 13 is short-circuited in the third frequency band.

[0181] The present application does not impose any specific limitation on the structure of the first resonant circuit 13 .

[0182] For example, see Figure 11 The first resonant circuit 13 includes a first capacitor C1 and a first inductor L1.

[0183] One end of the first inductor L1 is electrically connected to the connection point H, the other end of the first inductor L1 is electrically connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded. The first capacitor C1 and the first inductor L1 are capacitive in the first frequency band.

[0184] The sizes of the first capacitor C1 and the first inductor L1 can be designed according to the resonant frequency formula (1) of the first resonant circuit 13 as follows:

[0185]

[0186] In formula (1), L is the inductance of the first inductor L1, C is the capacitance of the first capacitor C1, and f1 is the resonant frequency of the first resonant circuit 13. For the first resonant circuit 13, f1 is the center frequency of the third frequency band.

[0187] Optionally, the first inductor L1 is a small inductor, and the inductance of the first inductor L1 is 2 to 6 nH. For example, the inductance of the first inductor L1 is 2 nH, 2.1 nH, 2.2 nH, 2.3 nH, 2.4 nH, 2.5 nH, 2.6 nH, 2.7 nH, 2.8 nH, 2.9 nH, 3 nH, 3.1 nH, 3.2 nH, 3.3 nH, 3.4 nH, 3.5 nH, 3.6 nH, 3.7 nH, 3.8 nH, 3.9 nH, 4 The inductance value is any one of nH, 4.1nH, 4.2nH, 4.3nH, 4.4nH, 4.5nH, 4.6nH, 4.7nH, 4.8nH, 4.9nH, 5nH, 5.1nH, 5.2nH, 5.3nH, 5.4nH, 5.5nH, 5.6nH, 5.7nH, 5.8nH, 5.9nH, and 6nH, or any two thereof.

[0188] The matching circuit 14 further includes a first matching branch 142. One end of the first matching branch 142 is grounded. The other end of the first matching branch 142 is electrically connected to an end of the first capacitive element 141 away from the feeding point A. The first matching branch 142 is short-circuited for the third frequency band.

[0189] First matching branch 142 includes, but is not limited to, a series LC resonant circuit comprising a fifth capacitor and a fourth inductor. The resonant frequency of first matching branch 142 is the center frequency of the third frequency band, thereby short-circuiting the third frequency band. The capacitance of the fifth capacitor and the inductance of the fourth inductor can be calculated using formula (1).

[0190] The capacitance of the fifth capacitor is 0-2 pF, and the inductance of the fourth inductor is 2-6 nH.

[0191] This application does not specifically limit the size of the third frequency band. Optionally, the third frequency band includes, but is not limited to, at least one of the LB band (less than 1 GHz), the MHB band (1-3 GHz), the UHB band (greater than 3 GHz), the Wi-Fi band, and the GPS band. For example, the first frequency band is the LB band, the second frequency band is the MHB band, and the third frequency band is the UHB band. For another example, the first frequency band is the GPS-L1 band, the second frequency band is the Wi-Fi 2.4G band, and the third frequency band is the UHB band.

[0192] Furthermore, the first capacitive element 141 and the first matching branch 142 can also serve as a part of the matching circuit 14 when the feed source 15 is working.

[0193] For the third frequency band, the first resonant circuit 13, the branch from the connection point H to the feed point A, the first matching branch 142, and the portion between the second floor point J2 and the third floor point J3 of the first floor edge 510 form a first open-ring structure. The opening of the first open-ring structure is the first coupling gap G1.

[0194] The feed source 15 is further configured to provide an excitation signal in a third frequency band.

[0195] The feed source 15 is further used to excite the first resonant circuit 13 , the connection point H to the feeding point A, the first matching branch 142 , and the first floor edge 510 to form a first zeroth-order resonant mode supporting the third frequency band.

[0196] The current of the first zero-order resonant mode is distributed in the branches between the second open end E2 and the connection point H, the first resonant circuit 13, the branches between the second floor point J2 and the third floor point J3 of the first floor edge 510, the first matching branch 142, and the branches between the feeding point A and the first open end E1, forming a U-shaped current.

[0197] The equivalent electrical length of the current path of the first zero-order resonant mode is equal to or close to half the wavelength of the third frequency band. The equivalent electrical length of the current path of the first zero-order resonant mode includes the electrical length between the second open end E2 and the connection point H, the equivalent electrical length of the first resonant circuit 13, the electrical length between the second floor point J2 and the third floor point J3 of the first floor edge 510, the equivalent electrical length of the first matching branch 142, and the electrical length from the feeding point A to the first open end E1. The sum of the length is equal to or close to half the wavelength of the third frequency band.

[0198] See also Figure 11 , the antenna assembly 100 further includes a connecting element 17 .

[0199] The connecting element 17 is located in a gap between the first radiator 11 , the second radiator 12 , and the first floor edge 510 of the reference floor 500 .

[0200] One end of the connecting element 17 is electrically connected to the connection point H, and one end of the connecting element 17 is electrically connected to the feeding point A.

[0201] The feed source 15 is used to provide an excitation signal in the fourth frequency band.

[0202] The feed source 15 is further used to excite the connection point H to the feeding point A and the first connection element 17 to form a second zeroth-order resonance mode supporting the fourth frequency band.

[0203] The current of the second zero-order resonant mode is distributed in the branch between the second open end E2 and the connection point H, the connecting element 17, and the branch between the feeding point A and the first open end E1, forming a U-shaped current.

[0204] The equivalent electrical length of the current path of the second zero-order resonant mode is equal to or close to half the wavelength of the fourth frequency band. The equivalent electrical length of the current path of the second zero-order resonant mode, including the sum of the electrical length between the second open end E2 and the connection point H, the equivalent electrical length of the connecting element 17, and the electrical length between the feeding point A and the first open end E1, is equal to or close to half the wavelength of the fourth frequency band.

[0205] This application does not specifically limit the size of the fourth frequency band. Optionally, the fourth frequency band includes but is not limited to at least one of the LB band (less than 1 GHz), the MHB band (1-3 GHz), the UHB band (greater than 3 GHz), the Wi-Fi band, the GPS band, etc. For example, the first frequency band is the LB band, the second frequency band is the MHB band, the third frequency band is the N78 band, and the fourth frequency band is the N79 band or the Wi-Fi 5G band. For another example, the first frequency band is the GPS-L1 band, the second frequency band is the Wi-Fi 2.4G band, the third frequency band is the N78 band, and the fourth frequency band is the N79 band or the Wi-Fi 5G band.

[0206] The specific structure of the connecting element 17 is described below with reference to the accompanying drawings.

[0207] In a first optional embodiment, the connecting element 17 includes a first connecting member 171 and a second capacitive element 173. One end of the first connecting member 171 is connected to the connection point H, and the other end of the first connecting member 171 is electrically connected to one end of the second capacitive element 173. The other end of the second capacitive element 173 is electrically connected to the feeding point A.

[0208] Optionally, the first connector 171 includes, but is not limited to, at least one of an electrical connection line, a metal segment, a conductive spring, etc. In this application, the first connector 171 is taken as an example of a metal segment integrally interconnected with the second radiator 12. The first connector 171 and the second radiator 12 can be formed on the same metal plate by CNC milling or the like.

[0209] Optionally, the second capacitive element 173 includes a capacitor or a coupling capacitor gap. When the second capacitive element 173 is a capacitor, one end of the capacitor is electrically connected to the first connector 171, and the other end of the capacitor is electrically connected to the feed point A. When the second capacitive element 173 is a coupling capacitor gap, a smaller coupling gap is formed between the first connector 171 and the feed point A to form the second capacitive element 173.

[0210] Optionally, the center frequency of the fourth frequency band is greater than the center frequency of the third frequency band.

[0211] In this embodiment, the branch between connection point H and feed point A and connecting element 17 form a second open-loop structure. Because the branch between connection point H and feed point A needs to be compatible with the first zeroth-order mode designed to support the third frequency band, a second capacitive element 173 is designed in this embodiment to shorten the physical length of the branch between connection point H and feed point A. This allows the second open-loop structure formed by the branch between connection point H and feed point A and second capacitive element 173 to support a higher frequency band, such as the fourth frequency band. In other words, second capacitive element 173 is used to enable the branch between connection point H and feed point A and connecting element 17 to form a second zeroth-order resonant mode that supports a higher frequency band.

[0212] Specifically, the sum of the electrical length between the second open end E2 and the connection point H, the equivalent electrical length of the first connecting member 171, and the equivalent electrical length of the second capacitive element 173 is or is close to 1 / 2 wavelength of the fourth frequency band, so as to facilitate the branch between the connection point H and the feeding point A and the connecting element 17 to form a second zero-order resonant mode supporting the fourth frequency band.

[0213] In a second optional embodiment, the connecting element 17 includes a second connecting member 172 and a second capacitive element 173. One end of the second connecting member 172 is connected to the feeding point A, and the other end of the second connecting member 172 is electrically connected to one end of the second capacitive element 173. The other end of the second capacitive element 173 is electrically connected to the connection point H.

[0214] In a third alternative embodiment, see Figure 11 The connecting element 17 includes a first connecting member 171, a second connecting member 172, and a second capacitive element 173. One end of the first connecting member 171 is connected to the connection point H, and the other end of the first connecting member 171 is electrically connected to one end of the second capacitive element 173. One end of the second connecting member 172 is connected to the feeding point A. The other end of the second connecting member 172 is electrically connected to the other end of the second capacitive element 173.

[0215] One end of the first resonant circuit 13 is electrically connected to the connection point H, and the other end of the first resonant circuit 13 is grounded. The first resonant circuit 13 includes at least one of a capacitor, an inductor, a resistor, and the like.

[0216] This application does not specifically limit the size of the first frequency band. Optionally, the first frequency band includes, but is not limited to, at least one of the LB band (less than 1 GHz), the MHB band (1-3 GHz), the UHB band (greater than 3 GHz), the Wi-Fi band, and the GPS band. For example, the first frequency band includes the GPS-L1 band.

[0217] The first resonant circuit 13 is capacitive for the first frequency band. Optionally, the first resonant circuit 13 includes at least a first capacitive component C1. The first capacitive component C1 is capacitive for the first frequency band.

[0218] This indicates that the maximum frequency of the first frequency band is lower than the resonant frequency of the first resonant circuit 13. The first resonant circuit 13 is capacitive in the first frequency band, indicating that the total impedance of the first resonant circuit 13 is dominated by the capacitive reactance (i.e., |XC|>|XL|), manifested as: the current phase leads the voltage phase (capacitive impedance characteristic). At this time, the first resonant circuit 13 is equivalent to a capacitive element.

[0219] In the above antenna assembly 100, the branch between the second ground point D2 and the connection point H, and the first resonant circuit 13, form a left-handed transmission line structure for the first frequency band. Specifically, for the first frequency band, the first resonant circuit 13 is equivalent to the series capacitance of the left-handed transmission line structure, while the branch between the second ground point D2 and the connection point H is equivalent to the parallel inductance of the left-handed transmission line structure for the first frequency band. Therefore, the branch between the second ground point D2 and the connection point H, and the first resonant circuit 13, form the first left-handed antenna 10 that supports the first frequency band.

[0220] The first floor edge 510 includes a first floor point J1 and a second floor point J2. The first floor point J1 is where the second ground point D2 is electrically connected to the reference floor 500. The second floor point J2 is where the first resonant circuit 13 is electrically connected to the reference floor 500.

[0221] The feed source 15 is used to excite the branch between the connection point H and the second ground point D2 and the first resonant circuit 13 to form a first resonant mode supporting the first frequency band. The first resonant mode is a left-handed mode supporting the first frequency band. In the left-handed antenna mode, current is distributed between the branch between the second ground point D2 and the connection point H, the first resonant circuit 13, and the first floor point J1 to the second floor point J2 of the first floor edge 510, forming a circular current with relatively uniform current intensity.

[0222] The electrical length of the second radiator 12 is less than 1 / 4 of the wavelength of the first frequency band. Further, the electrical length of the second radiator 12 is greater than or equal to 1 / 8 of the wavelength of the first frequency band. The wavelength refers to the medium wavelength.

[0223] See also Figure 11 The matching circuit 14 includes at least a first capacitive element 141. One end of the first capacitive element 141 is electrically connected to the feed point A. The feed source 15 is electrically connected to the other end of the first capacitive element 141. The first capacitive element 141 includes a capacitor. Optionally, the capacitor is a small capacitor with a capacitance value of 0 to 2 pF. For example, the capacitance value of the capacitor is any one of 0.1 pF, 0.2 pF, 0.3 pF, 0.4 pF, 0.5 pF, 0.6 pF, 0.7 pF, 0.8 pF, 0.9 pF, 1 pF, 1.1 pF, 1.2 pF, 1.3 pF, 1.4 pF, 1.5 pF, 1.6 pF, 1.7 pF, 1.8 pF, 1.9 pF, and 2 pF, or any capacitance value between two of them.

[0224] In the antenna assembly 100 described above, the branch between the first ground point D1 and the feed point A, and the first capacitive element 141, form a left-handed transmission line structure for the second frequency band. Specifically, for the second frequency band, the first capacitive element 141 is equivalent to the series capacitor of the left-handed transmission line structure, while the branch between the first ground point D1 and the feed point A is equivalent to the parallel inductor of the left-handed transmission line structure for the second frequency band. Therefore, the branch between the first ground point D1 and the feed point A, and the first capacitive element 141, form a second left-handed antenna 20 that supports the second frequency band.

[0225] See also Figure 11 The first floor edge 510 further includes a third floor point J3 and a fourth floor point J4. The third floor point J3 is where the feed source 15 is electrically connected to the reference floor 500. The fourth floor point J4 is where the first ground point D1 is electrically connected to the reference floor 500.

[0226] The feed source 15 is further configured to provide an excitation signal in a second frequency band.

[0227] The feed source 15 is also used to excite the feed point A to the first ground point D1 to form a second resonant mode supporting the second frequency band. The second resonant mode is a left-handed mode supporting the second frequency band. In the left-handed antenna mode, the current is distributed through the branch between the first ground point D1 and the feed point A, the first capacitive element 141, and the third floor point J3 of the first floor edge 510 to the fourth floor edge, forming a circular current with relatively uniform current intensity.

[0228] The present application does not specifically limit the size of the second frequency band. Optionally, the second frequency band includes, but is not limited to, at least one of the LB band (less than 1 GHz), the MHB band (1-3 GHz), the UHB band (greater than 3 GHz), the Wi-Fi band, and the GPS band.

[0229] The center frequency of the second frequency band can be greater than or less than the center frequency of the first frequency band. For example, the first frequency band is the LB band, and the second frequency band is the MHB band. For another example, the first frequency band is the GPS-L1 band, and the second frequency band is the Wi-Fi 2.4G band.

[0230] The electrical length of the first radiator 11 is less than 1 / 4 wavelength of the second frequency band. Further, the electrical length of the first radiator 11 is greater than or equal to 1 / 8 wavelength of the second frequency band. The wavelength refers to the medium wavelength.

[0231] The present application designs the structure of the antenna assembly 100, specifically designing the matching circuit 14 to include a first capacitive element 141 and the first resonant circuit 13 to exhibit capacitive reactance for a first frequency band, thereby forming a first left-handed antenna 10 supporting the first frequency band and a second left-handed antenna 20 supporting a second frequency band. The first frequency band is different in size from the second frequency band, and the current distribution position in the first frequency band is different from the current distribution position in the second frequency band, thereby improving the isolation between the first and second frequency bands.

[0232] See also Figure 10 The antenna assembly 100 further includes a second resonant circuit 16. One end of the second resonant circuit 16 is electrically connected to the connection point H, and the other end of the second resonant circuit 16 is grounded. The structure and function of the second resonant circuit 16 can be referenced to the second resonant circuit 16 in Example 1. One end of the second resonant circuit 16 is electrically connected to the connection point H, and the other end of the second resonant circuit 16 is grounded.

[0233] The electronic device 1000 provided in an embodiment of the present application includes an antenna assembly 100 and a reference floor 500. The antenna assembly 100 includes a first radiator 11, a second radiator 12, a first resonant circuit 13, a matching circuit 14, a feed source 15, and a connecting element 17. The first radiator 11 is arranged at intervals along the first edge of the reference floor 500. The first radiator 11 includes a first grounding point D1, a feeding point A, and a first open end E1. The second radiator 12 is arranged at intervals along the first edge of the reference floor 500. The second radiator 12 includes a second grounding point D2, a connection point H, and a second open end E2. A first coupling gap G1 is formed between the second open end E2 and the first open end E1. One end of the first resonant circuit 13 is electrically connected to the connection point H, and the other end of the first resonant circuit 13 is grounded. The first resonant circuit 13 is short-circuited for the third frequency band. The matching circuit 14 also includes a first matching branch 142. One end of the first matching branch 142 is grounded. The first matching branch 142 is short-circuited for the third frequency band. The feed source 15 is electrically connected to the connection point H. Connecting feed point A; the connecting element 17 is located in the gap between the first radiator 11 and the first floor edge 510 of the reference floor 500, one end of the connecting element 17 is electrically connected to the connecting point H, and one end of the connecting element 17 is electrically connected to the feeding point A; the feed source 15 is also used to excite the connecting point H to the feeding point A, the first resonant circuit 13, the first floor edge 510 and the first matching branch 142 to form a first zeroth-order resonant mode supporting the third frequency band; the feed source 15 is also used to excite the connecting point H to the feeding point A and the connecting element 17 to form a second zeroth-order resonant mode supporting the fourth frequency band; in this way, compared to each antenna group component supporting one frequency band, the antenna component 100 can support the third frequency band and the fourth frequency band, thereby supporting more frequency bands while being miniaturized.

[0234] The specific structures of an antenna assembly 100 and an electronic device 1000 having the antenna assembly 100 provided in the third embodiment are described below with reference to the accompanying drawings.

[0235] See also Figure 12 The antenna assembly 100 includes a first radiator 11 , a second radiator 12 , a first resonant circuit 13 , a matching circuit 14 and a feed source 15 .

[0236] See also Figure 12 The first radiators 11 are spaced apart along a first edge of the reference floor 500. The first radiators 11 include a first grounding point D1, a feeding point A, and a first open end E1.

[0237] See also Figure 12The second radiators 12 are spaced apart along the first edge of the reference floor 500. The second radiators 12 include a second grounding point D2, a connection point H, and a second open end E2. A first coupling gap G1 is formed between the second open end E2 and the first open end E1.

[0238] See also Figure 12 The matching circuit 14 includes a first capacitive element 141. One end of the first capacitive element 141 is electrically connected to the feed point A. The matching circuit 14 also includes a first matching branch 142. One end of the first matching branch 142 is grounded. The first matching branch 142 is short-circuited for the third frequency band.

[0239] See also Figure 12 One end of the first resonant circuit 13 is electrically connected to the connection point H, and the other end of the first resonant circuit 13 is grounded. The first resonant circuit 13 includes at least one of a capacitor, an inductor, and a resistor.

[0240] See also Figure 12 The matching circuit 14 includes at least a first capacitive element 141. One end of the first capacitive element 141 is electrically connected to the feed point A. The feed source 15 is electrically connected to the other end of the first capacitive element 141. The first capacitive element 141 includes a capacitor. Optionally, the capacitor is a small capacitor with a capacitance value of 0 to 2 pF. For example, the capacitance value of the capacitor is any one of 0.1 pF, 0.2 pF, 0.3 pF, 0.4 pF, 0.5 pF, 0.6 pF, 0.7 pF, 0.8 pF, 0.9 pF, 1 pF, 1.1 pF, 1.2 pF, 1.3 pF, 1.4 pF, 1.5 pF, 1.6 pF, 1.7 pF, 1.8 pF, 1.9 pF, and 2 pF, or any capacitance value between two of them.

[0241] In the antenna assembly 100 described above, the branch between the first ground point D1 and the feed point A, and the first capacitive element 141, form a left-handed transmission line structure for the second frequency band. Specifically, for the second frequency band, the first capacitive element 141 is equivalent to the series capacitor of the left-handed transmission line structure, while the branch between the first ground point D1 and the feed point A is equivalent to the parallel inductor of the left-handed transmission line structure for the second frequency band. Therefore, the branch between the first ground point D1 and the feed point A, and the first capacitive element 141, form a second left-handed antenna 20 that supports the second frequency band.

[0242] The first floor edge 510 further includes a third floor point J3 and a fourth floor point J4. The third floor point J3 is where the feed source 15 is electrically connected to the reference floor 500. The fourth floor point J4 is where the first ground point D1 is electrically connected to the reference floor 500.

[0243] The feed source 15 is further configured to provide an excitation signal in a second frequency band.

[0244] The feed source 15 is also used to excite the feed point A to the first ground point D1 to form a second resonant mode supporting the second frequency band. The second resonant mode is a left-handed mode supporting the second frequency band. In the left-handed antenna mode, the current is distributed through the branch between the first ground point D1 and the feed point A, the first capacitive element 141, and the third floor point J3 of the first floor edge 510 to the fourth floor edge, forming a circular current with relatively uniform current intensity.

[0245] The present application does not specifically limit the size of the second frequency band. Optionally, the second frequency band includes, but is not limited to, at least one of the LB band (less than 1 GHz), the MHB band (1-3 GHz), the UHB band (greater than 3 GHz), the Wi-Fi band, and the GPS band.

[0246] The center frequency of the second frequency band can be greater than or less than the center frequency of the first frequency band. For example, the first frequency band is the LB band, and the second frequency band is the MHB band. For another example, the first frequency band is the GPS-L1 band, and the second frequency band is the Wi-Fi 2.4G band.

[0247] The electrical length of the first radiator 11 is less than 1 / 4 wavelength of the second frequency band. Further, the electrical length of the first radiator 11 is greater than or equal to 1 / 8 wavelength of the second frequency band. The wavelength refers to the medium wavelength.

[0248] The present application designs the structure of the antenna assembly 100, specifically designing the matching circuit 14 to include a first capacitive element 141 and the first resonant circuit 13 to exhibit capacitive reactance for a first frequency band, thereby forming a first left-handed antenna 10 supporting the first frequency band and a second left-handed antenna 20 supporting a second frequency band. The first frequency band is different in size from the second frequency band, and the current distribution position in the first frequency band is different from the current distribution position in the second frequency band, thereby improving the isolation between the first and second frequency bands.

[0249] See also Figure 12 The first resonant circuit 13 is also short-circuited for the third frequency band, so that the third frequency band can be grounded through the first resonant circuit 13, thereby facilitating the formation of an open ring structure for the third frequency band.

[0250] The first resonant circuit 13 is short-circuited in the third frequency band, indicating that the first resonant circuit 13 reaches a series resonance state at this time, which is manifested as: the inductive reactance XL and the capacitive reactance XC are equal in magnitude and opposite in phase, canceling each other out; the total impedance is close to zero (the theoretical value is pure resistance, but the actual value is affected by component loss); the current reaches its maximum value, and the signal passes unimpeded.

[0251] Optionally, the resonant frequency of the first resonant circuit 13 is at or close to the center frequency of the third frequency band, so that the first resonant circuit 13 is short-circuited in the third frequency band.

[0252] The present application does not impose any specific limitation on the structure of the first resonant circuit 13 .

[0253] For example, see Figure 12 The first resonant circuit 13 includes a first capacitor C1 and a first inductor L1.

[0254] One end of the first inductor L1 is electrically connected to the connection point H, the other end of the first inductor L1 is electrically connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded. The first capacitor C1 and the first inductor L1 are capacitive in the first frequency band.

[0255] The sizes of the first capacitor C1 and the first inductor L1 can be designed according to the resonant frequency formula (1) of the first resonant circuit 13 as follows:

[0256]

[0257] In formula (1), L is the inductance of the first inductor L1, C is the capacitance of the first capacitor C1, and f1 is the resonant frequency of the first resonant circuit 13. For the first resonant circuit 13, f1 is the center frequency of the third frequency band.

[0258] Optionally, the first inductor L1 is a small inductor, and the inductance of the first inductor L1 is 2 to 6 nH. For example, the inductance of the first inductor L1 is 2 nH, 2.1 nH, 2.2 nH, 2.3 nH, 2.4 nH, 2.5 nH, 2.6 nH, 2.7 nH, 2.8 nH, 2.9 nH, 3 nH, 3.1 nH, 3.2 nH, 3.3 nH, 3.4 nH, 3.5 nH, 3.6 nH, 3.7 nH, 3.8 nH, 3.9 nH, 4 The inductance value is any one of nH, 4.1nH, 4.2nH, 4.3nH, 4.4nH, 4.5nH, 4.6nH, 4.7nH, 4.8nH, 4.9nH, 5nH, 5.1nH, 5.2nH, 5.3nH, 5.4nH, 5.5nH, 5.6nH, 5.7nH, 5.8nH, 5.9nH, and 6nH, or any two thereof.

[0259] The matching circuit 14 further includes a first matching branch 142. One end of the first matching branch 142 is grounded. The other end of the first matching branch 142 is electrically connected to an end of the first capacitive element 141 away from the feeding point A. The first matching branch 142 is short-circuited for the third frequency band.

[0260] First matching branch 142 includes, but is not limited to, a series LC resonant circuit comprising a fifth capacitor and a fourth inductor. The resonant frequency of first matching branch 142 is the center frequency of the third frequency band, thereby short-circuiting the third frequency band. The capacitance of the fifth capacitor and the inductance of the fourth inductor can be calculated using formula (1).

[0261] The capacitance of the fifth capacitor is 0-2 pF, and the inductance of the fourth inductor is 2-6 nH.

[0262] This application does not specifically limit the size of the third frequency band. Optionally, the third frequency band includes, but is not limited to, at least one of the LB band (less than 1 GHz), the MHB band (1-3 GHz), the UHB band (greater than 3 GHz), the Wi-Fi band, and the GPS band. For example, the first frequency band is the LB band, the second frequency band is the MHB band, and the third frequency band is the UHB band. For another example, the first frequency band is the GPS-L1 band, the second frequency band is the Wi-Fi 2.4G band, and the third frequency band is the UHB band.

[0263] Furthermore, the first capacitive element 141 and the first matching branch 142 can also serve as a part of the matching circuit 14 when the feed source 15 is working.

[0264] For the third frequency band, the first resonant circuit 13, the branch from the connection point H to the feed point A, the first matching branch 142, and the portion between the second floor point J2 and the third floor point J3 of the first floor edge 510 form a first open-ring structure. The opening of the first open-ring structure is the first coupling gap G1.

[0265] The feed source 15 is further configured to provide an excitation signal in a third frequency band.

[0266] The feed source 15 is further used to excite the first resonant circuit 13 , the connection point H to the feeding point A, the first matching branch 142 , and the first floor edge 510 to form a first zeroth-order resonant mode supporting the third frequency band.

[0267] The current of the first zero-order resonant mode is distributed in the branches between the second open end E2 and the connection point H, the first resonant circuit 13, the branches between the second floor point J2 and the third floor point J3 of the first floor edge 510, the first matching branch 142, and the branches between the feeding point A and the first open end E1, forming a U-shaped current.

[0268] The equivalent electrical length of the current path of the first zero-order resonant mode is equal to or close to half the wavelength of the third frequency band. The equivalent electrical length of the current path of the first zero-order resonant mode includes the electrical length between the second open end E2 and the connection point H, the equivalent electrical length of the first resonant circuit 13, the electrical length between the second floor point J2 and the third floor point J3 of the first floor edge 510, the equivalent electrical length of the first matching branch 142, and the electrical length from the feeding point A to the first open end E1. The sum of the length is equal to or close to half the wavelength of the third frequency band.

[0269] See also Figure 12 , the first resonant circuit 13 is capacitive for the first frequency band. Optionally, the first resonant circuit 13 includes at least a first capacitive component C1. The first capacitive component C1 is capacitive for the first frequency band.

[0270] This indicates that the maximum frequency of the first frequency band is lower than the resonant frequency of the first resonant circuit 13. The first resonant circuit 13 is capacitive in the first frequency band, indicating that the total impedance of the first resonant circuit 13 is dominated by the capacitive reactance (i.e., |XC|>|XL|), manifested as: the current phase leads the voltage phase (capacitive impedance characteristic). At this time, the first resonant circuit 13 is equivalent to a capacitive element.

[0271] In the above antenna assembly 100, the branch between the second ground point D2 and the connection point H, and the first resonant circuit 13, form a left-handed transmission line structure for the first frequency band. Specifically, for the first frequency band, the first resonant circuit 13 is equivalent to the series capacitance of the left-handed transmission line structure, while the branch between the second ground point D2 and the connection point H is equivalent to the parallel inductance of the left-handed transmission line structure for the first frequency band. Therefore, the branch between the second ground point D2 and the connection point H, and the first resonant circuit 13, form the first left-handed antenna 10 that supports the first frequency band.

[0272] See also Figure 12 The first floor edge 510 includes a first floor point J1 and a second floor point J2. The first floor point J1 is where the second ground point D2 is electrically connected to the reference floor 500. The second floor point J2 is where the first resonant circuit 13 is electrically connected to the reference floor 500.

[0273] The feed source 15 is used to excite the branch between the connection point H and the second ground point D2 and the first resonant circuit 13 to form a first resonant mode supporting the first frequency band. The first resonant mode is a left-handed mode supporting the first frequency band. In the left-handed antenna mode, current is distributed between the branch between the second ground point D2 and the connection point H, the first resonant circuit 13, and the first floor point J1 to the second floor point J2 of the first floor edge 510, forming a circular current with relatively uniform current intensity.

[0274] The electrical length of the second radiator 12 is less than 1 / 4 of the wavelength of the first frequency band. Further, the electrical length of the second radiator 12 is greater than or equal to 1 / 8 of the wavelength of the first frequency band. The wavelength refers to the medium wavelength.

[0275] See also Figure 11 , the antenna assembly 100 further includes a connecting element 17 .

[0276] The connecting element 17 is located in a gap between the first radiator 11 , the second radiator 12 , and the first floor edge 510 of the reference floor 500 .

[0277] One end of the connecting element 17 is electrically connected to the connection point H, and one end of the connecting element 17 is electrically connected to the feeding point A.

[0278] The feed source 15 is used to provide an excitation signal in the fourth frequency band.

[0279] The feed source 15 is further used to excite the connection point H to the feeding point A and the first connection element 17 to form a second zeroth-order resonance mode supporting the fourth frequency band.

[0280] The current of the second zero-order resonant mode is distributed in the branch between the second open end E2 and the connection point H, the connecting element 17, and the branch between the feeding point A and the first open end E1, forming a U-shaped current.

[0281] The equivalent electrical length of the current path of the second zero-order resonant mode is equal to or close to half the wavelength of the fourth frequency band. The equivalent electrical length of the current path of the second zero-order resonant mode, including the sum of the electrical length between the second open end E2 and the connection point H, the equivalent electrical length of the connecting element 17, and the electrical length between the feeding point A and the first open end E1, is equal to or close to half the wavelength of the fourth frequency band.

[0282] This application does not specifically limit the size of the fourth frequency band. Optionally, the fourth frequency band includes but is not limited to at least one of the LB band (less than 1 GHz), the MHB band (1-3 GHz), the UHB band (greater than 3 GHz), the Wi-Fi band, the GPS band, etc. For example, the first frequency band is the LB band, the second frequency band is the MHB band, the third frequency band is the N78 band, and the fourth frequency band is the N79 band or the Wi-Fi 5G band. For another example, the first frequency band is the GPS-L1 band, the second frequency band is the Wi-Fi 2.4G band, the third frequency band is the N78 band, and the fourth frequency band is the N79 band or the Wi-Fi 5G band.

[0283] The specific structure of the connecting element 17 is described below with reference to the accompanying drawings.

[0284] In a first optional embodiment, the connecting element 17 includes a first connecting member 171 and a second capacitive element 173. One end of the first connecting member 171 is connected to the connection point H, and the other end of the first connecting member 171 is electrically connected to one end of the second capacitive element 173. The other end of the second capacitive element 173 is electrically connected to the feeding point A.

[0285] Optionally, the first connector 171 includes, but is not limited to, at least one of an electrical connection line, a metal segment, a conductive spring, etc. In this application, the first connector 171 is taken as an example of a metal segment integrally interconnected with the second radiator 12. The first connector 171 and the second radiator 12 can be formed on the same metal plate by CNC milling or the like.

[0286] Optionally, the second capacitive element 173 includes a capacitor or a coupling capacitor gap. When the second capacitive element 173 is a capacitor, one end of the capacitor is electrically connected to the first connector 171, and the other end of the capacitor is electrically connected to the feed point A. When the second capacitive element 173 is a coupling capacitor gap, a smaller coupling gap is formed between the first connector 171 and the feed point A to form the second capacitive element 173.

[0287] Optionally, the center frequency of the fourth frequency band is greater than the center frequency of the third frequency band.

[0288] In this embodiment, the branch between connection point H and feed point A and connecting element 17 form a second open-loop structure. Because the branch between connection point H and feed point A needs to be compatible with the first zeroth-order mode designed to support the third frequency band, a second capacitive element 173 is designed in this embodiment to shorten the physical length of the branch between connection point H and feed point A. This allows the second open-loop structure formed by the branch between connection point H and feed point A and second capacitive element 173 to support a higher frequency band, such as the fourth frequency band. In other words, second capacitive element 173 is used to enable the branch between connection point H and feed point A and connecting element 17 to form a second zeroth-order resonant mode that supports a higher frequency band.

[0289] Specifically, the sum of the electrical length between the second open end E2 and the connection point H, the equivalent electrical length of the first connecting member 171, and the equivalent electrical length of the second capacitive element 173 is or is close to 1 / 2 wavelength of the fourth frequency band, so as to facilitate the branch between the connection point H and the feeding point A and the connecting element 17 to form a second zero-order resonant mode supporting the fourth frequency band.

[0290] In a second optional embodiment, the connecting element 17 includes a second connecting member 172 and a second capacitive element 173. One end of the second connecting member 172 is connected to the feeding point A, and the other end of the second connecting member 172 is electrically connected to one end of the second capacitive element 173. The other end of the second capacitive element 173 is electrically connected to the connection point H.

[0291] In a third optional embodiment, the connecting element 17 includes a first connecting member 171, a second connecting member 172, and a second capacitive element 173. One end of the first connecting member 171 is connected to the connection point H, and the other end of the first connecting member 171 is electrically connected to one end of the second capacitive element 173. One end of the second connecting member 172 is connected to the feeding point A. The other end of the second connecting member 172 is electrically connected to the other end of the second capacitive element 173.

[0292] See also Figure 10 The antenna assembly 100 further includes a second resonant circuit 16. One end of the second resonant circuit 16 is electrically connected to the connection point H, and the other end of the second resonant circuit 16 is grounded. The structure and function of the second resonant circuit 16 can be referenced to the second resonant circuit 16 in Example 1. One end of the second resonant circuit 16 is electrically connected to the connection point H, and the other end of the second resonant circuit 16 is grounded.

[0293] An electronic device 1000 provided in an embodiment of the present application includes an antenna assembly 100 and a reference floor 500. The antenna assembly 100 includes a first radiator 11, a second radiator 12, a matching circuit 14, and a feed source 15. The first radiator 11 is arranged at intervals along a first edge of the reference floor 500. The first radiator 11 includes a first grounding point D1, a feeding point A, and a first open end E1. The second radiator 12 is arranged at intervals along a first edge of the reference floor 500. The second radiator 12 includes a second grounding point D2, a connection point H, and a second open end E2. A first coupling point is formed between the second open end E2 and the first open end E1. Gap G1; matching circuit 14 includes a first capacitive element 141, one end of which is electrically connected to feed point A; matching circuit 14 also includes a first matching branch 142, one end of which is grounded, and first matching branch 142 is short-circuited for the third frequency band; feed source 15 is electrically connected to the other end of first capacitive element 141; feed source 15 is used to excite connection point H to second ground point D2 to form a second resonant mode supporting the second frequency band, and is also used to excite connection point H to feed point A, first resonant circuit 13, first floor edge 510, and first matching branch 142 to form a first zeroth-order resonant mode supporting the third frequency band. Thus, compared to each antenna group component supporting a single frequency band, antenna assembly 100 can support both the second and third frequency bands, thereby supporting more frequency bands while being compact.

[0294] The specific structures of an antenna assembly 100 and an electronic device 1000 having the antenna assembly 100 provided in the fourth embodiment are described below with reference to the accompanying drawings.

[0295] See also Figure 13 The antenna assembly 100 includes a first radiator 11 , a second radiator 12 , a first resonant circuit 13 , a matching circuit 14 and a feed source 15 .

[0296] See also Figure 13 The first radiators 11 are spaced apart along a first edge of the reference floor 500. The first radiators 11 include a first grounding point D1, a feeding point A, and a first open end E1.

[0297] See also Figure 13 The second radiators 12 are spaced apart along the first edge of the reference floor 500. The second radiators 12 include a second grounding point D2, a connection point H, and a second open end E2. A first coupling gap G1 is formed between the second open end E2 and the first open end E1.

[0298] See also Figure 13 The matching circuit 14 includes a first capacitive element 141. One end of the first capacitive element 141 is electrically connected to the feed point A. The matching circuit 14 also includes a first matching branch 142. One end of the first matching branch 142 is grounded. The first matching branch 142 is short-circuited for the third frequency band.

[0299] See also Figure 13 One end of the first resonant circuit 13 is electrically connected to the connection point H, and the other end of the first resonant circuit 13 is grounded. The first resonant circuit 13 includes at least one of a capacitor, an inductor, and a resistor.

[0300] See also Figure 13 , the first resonant circuit 13 is capacitive for the first frequency band. Optionally, the first resonant circuit 13 includes at least a first capacitive component C1. The first capacitive component C1 is capacitive for the first frequency band.

[0301] This indicates that the maximum frequency of the first frequency band is lower than the resonant frequency of the first resonant circuit 13. The first resonant circuit 13 is capacitive in the first frequency band, indicating that the total impedance of the first resonant circuit 13 is dominated by the capacitive reactance (i.e., |XC|>|XL|), manifested as: the current phase leads the voltage phase (capacitive impedance characteristic). At this time, the first resonant circuit 13 is equivalent to a capacitive element.

[0302] In the above antenna assembly 100, the branch between the second ground point D2 and the connection point H, and the first resonant circuit 13, form a left-handed transmission line structure for the first frequency band. Specifically, for the first frequency band, the first resonant circuit 13 is equivalent to the series capacitance of the left-handed transmission line structure, while the branch between the second ground point D2 and the connection point H is equivalent to the parallel inductance of the left-handed transmission line structure for the first frequency band. Therefore, the branch between the second ground point D2 and the connection point H, and the first resonant circuit 13, form the first left-handed antenna 10 that supports the first frequency band.

[0303] The first floor edge 510 includes a first floor point J1 and a second floor point J2. The first floor point J1 is where the second ground point D2 is electrically connected to the reference floor 500. The second floor point J2 is where the first resonant circuit 13 is electrically connected to the reference floor 500.

[0304] The feed source 15 is used to excite the branch between the connection point H and the second ground point D2 and the first resonant circuit 13 to form a first resonant mode supporting the first frequency band. The first resonant mode is a left-handed mode supporting the first frequency band. In the left-handed antenna mode, current is distributed between the branch between the second ground point D2 and the connection point H, the first resonant circuit 13, and the first floor point J1 to the second floor point J2 of the first floor edge 510, forming a circular current with relatively uniform current intensity.

[0305] The electrical length of the second radiator 12 is less than 1 / 4 of the wavelength of the first frequency band. Further, the electrical length of the second radiator 12 is greater than or equal to 1 / 8 of the wavelength of the first frequency band. The wavelength refers to the medium wavelength.

[0306] Furthermore, the first resonant circuit 13 is short-circuited for the third frequency band, so that the third frequency band can be grounded through the first resonant circuit 13 , thereby facilitating the formation of an open-loop structure for the third frequency band.

[0307] The first resonant circuit 13 is short-circuited in the third frequency band, indicating that the first resonant circuit 13 reaches a series resonance state at this time, which is manifested as: the inductive reactance XL and the capacitive reactance XC are equal in magnitude and opposite in phase, canceling each other out; the total impedance is close to zero (the theoretical value is pure resistance, but the actual value is affected by component loss); the current reaches its maximum value, and the signal passes unimpeded.

[0308] Optionally, the resonant frequency of the first resonant circuit 13 is at or close to the center frequency of the third frequency band, so that the first resonant circuit 13 is short-circuited in the third frequency band.

[0309] This application does not specifically limit the structure of the first resonant circuit 13 .

[0310] For example, see Figure 13The first resonant circuit 13 includes a first capacitor C1 and a first inductor L1.

[0311] One end of the first inductor L1 is electrically connected to the connection point H, the other end of the first inductor L1 is electrically connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded. The first capacitor C1 and the first inductor L1 are capacitive in the first frequency band.

[0312] The sizes of the first capacitor C1 and the first inductor L1 can be designed according to the resonant frequency formula (1) of the first resonant circuit 13 as follows:

[0313]

[0314] In formula (1), L is the inductance of the first inductor L1, C is the capacitance of the first capacitor C1, and f1 is the resonant frequency of the first resonant circuit 13. For the first resonant circuit 13, f1 is the center frequency of the third frequency band.

[0315] Optionally, the first inductor L1 is a small inductor, and the inductance of the first inductor L1 is 2 to 6 nH. For example, the inductance of the first inductor L1 is 2 nH, 2.1 nH, 2.2 nH, 2.3 nH, 2.4 nH, 2.5 nH, 2.6 nH, 2.7 nH, 2.8 nH, 2.9 nH, 3 nH, 3.1 nH, 3.2 nH, 3.3 nH, 3.4 nH, 3.5 nH, 3.6 nH, 3.7 nH, 3.8 nH, 3.9 nH, 4 The inductance value is any one of nH, 4.1nH, 4.2nH, 4.3nH, 4.4nH, 4.5nH, 4.6nH, 4.7nH, 4.8nH, 4.9nH, 5nH, 5.1nH, 5.2nH, 5.3nH, 5.4nH, 5.5nH, 5.6nH, 5.7nH, 5.8nH, 5.9nH, and 6nH, or any two thereof.

[0316] The matching circuit 14 further includes a first matching branch 142. One end of the first matching branch 142 is grounded. The other end of the first matching branch 142 is electrically connected to an end of the first capacitive element 141 away from the feeding point A. The first matching branch 142 is short-circuited for the third frequency band.

[0317] First matching branch 142 includes, but is not limited to, a series LC resonant circuit comprising a fifth capacitor and a fourth inductor. The resonant frequency of first matching branch 142 is the center frequency of the third frequency band, thereby short-circuiting the third frequency band. The capacitance of the fifth capacitor and the inductance of the fourth inductor can be calculated using formula (1).

[0318] The capacitance of the fifth capacitor is 0-2 pF, and the inductance of the fourth inductor is 2-6 nH.

[0319] This application does not specifically limit the size of the third frequency band. Optionally, the third frequency band includes, but is not limited to, at least one of the LB band (less than 1 GHz), the MHB band (1-3 GHz), the UHB band (greater than 3 GHz), the Wi-Fi band, and the GPS band. For example, the first frequency band is the LB band, the second frequency band is the MHB band, and the third frequency band is the UHB band. For another example, the first frequency band is the GPS-L1 band, the second frequency band is the Wi-Fi 2.4G band, and the third frequency band is the UHB band.

[0320] Furthermore, the first capacitive element 141 and the first matching branch 142 can also serve as a part of the matching circuit 14 when the feed source 15 is working.

[0321] For the third frequency band, the first resonant circuit 13, the branch from the connection point H to the feed point A, the first matching branch 142, and the portion between the second floor point J2 and the third floor point J3 of the first floor edge 510 form a first open-ring structure. The opening of the first open-ring structure is the first coupling gap G1.

[0322] The feed source 15 is further configured to provide an excitation signal in a third frequency band.

[0323] The feed source 15 is further used to excite the first resonant circuit 13 , the connection point H to the feeding point A, the first matching branch 142 , and the first floor edge 510 to form a first zeroth-order resonant mode supporting the third frequency band.

[0324] The current of the first zero-order resonant mode is distributed in the branches between the second open end E2 and the connection point H, the first resonant circuit 13, the branches between the second floor point J2 and the third floor point J3 of the first floor edge 510, the first matching branch 142, and the branches between the feeding point A and the first open end E1, forming a U-shaped current.

[0325] The equivalent electrical length of the current path of the first zero-order resonant mode is equal to or close to half the wavelength of the third frequency band. The equivalent electrical length of the current path of the first zero-order resonant mode includes the electrical length between the second open end E2 and the connection point H, the equivalent electrical length of the first resonant circuit 13, the electrical length between the second floor point J2 and the third floor point J3 of the first floor edge 510, the equivalent electrical length of the first matching branch 142, and the electrical length from the feeding point A to the first open end E1. The sum of the length is equal to or close to half the wavelength of the third frequency band.

[0326] See also Figure 10The antenna assembly 100 further includes a second resonant circuit 16. One end of the second resonant circuit 16 is electrically connected to the connection point H, and the other end of the second resonant circuit 16 is grounded. The structure and function of the second resonant circuit 16 can refer to the second resonant circuit 16 in the first embodiment.

[0327] One end of the second resonant circuit 16 is electrically connected to the connection point H, and the other end of the second resonant circuit 16 is grounded.

[0328] An electronic device 1000 provided in an embodiment of the present application includes an antenna assembly 100 and a reference floor 500. The antenna assembly 100 includes a first radiator 11, a second radiator 12, a matching circuit 14, and a feed source 15. The first radiator 11 is arranged at intervals along a first edge of the reference floor 500. The first radiator 11 includes a first grounding point D1, a feeding point A, and a first open end E1. The second radiator 12 is arranged at intervals along a first edge of the reference floor 500. The second radiator 12 includes a second grounding point D2, a connection point H, and a second open end E2. A first coupling gap G1 is formed between the second open end E2 and the first open end E1. The first resonant circuit 13 includes one end electrically connected to the connection point H and the other end grounded. The first resonant circuit 13 is capacitive for the first frequency band. The matching circuit 14 further includes a first matching branch 142. One end of the first matching branch 142 is grounded, and the first matching branch 142 is short-circuited for the third frequency band. The feed source 15 is used to excite the connection point H to the second grounding point D2 to form a first resonant mode supporting the first frequency band. The feed source 15 is also used to excite the connection point H to the feed point A, the first resonant circuit 13, the first floor edge 510, and the first matching branch 142 to form a first zeroth-order resonant mode supporting the third frequency band. Thus, compared to each antenna group component supporting one frequency band, the antenna assembly 100 can support both the first and third frequency bands, thereby supporting more frequency bands while being compact.

[0329] The specific structures of an antenna assembly 100 and an electronic device 1000 having the antenna assembly 100 provided in the fifth embodiment are described below with reference to the accompanying drawings.

[0330] See also Figure 14 The antenna assembly 100 includes a first radiator 11 , a second radiator 12 , a first resonant circuit 13 , a matching circuit 14 and a feed source 15 .

[0331] See also Figure 14 The first radiators 11 are spaced apart along a first edge of the reference floor 500. The first radiators 11 include a first grounding point D1, a feeding point A, and a first open end E1.

[0332] See also Figure 14The second radiators 12 are spaced apart along the first edge of the reference floor 500. The second radiators 12 include a second grounding point D2, a connection point H, and a second open end E2. A first coupling gap G1 is formed between the second open end E2 and the first open end E1.

[0333] One end of the first resonant circuit 13 is electrically connected to the connection point H, and the other end of the first resonant circuit 13 is grounded. The first resonant circuit 13 includes at least one of a capacitor, an inductor, a resistor, and the like.

[0334] See also Figure 14 , the first resonant circuit 13 is capacitive for the first frequency band. Optionally, the first resonant circuit 13 includes at least a first capacitive component C1. The first capacitive component C1 is capacitive for the first frequency band.

[0335] This indicates that the maximum frequency of the first frequency band is lower than the resonant frequency of the first resonant circuit 13. The first resonant circuit 13 is capacitive in the first frequency band, indicating that the total impedance of the first resonant circuit 13 is dominated by the capacitive reactance (i.e., |XC|>|XL|), manifested as: the current phase leads the voltage phase (capacitive impedance characteristic). At this time, the first resonant circuit 13 is equivalent to a capacitive element.

[0336] In the above antenna assembly 100, the branch between the second ground point D2 and the connection point H, and the first resonant circuit 13, form a left-handed transmission line structure for the first frequency band. Specifically, for the first frequency band, the first resonant circuit 13 is equivalent to the series capacitance of the left-handed transmission line structure, while the branch between the second ground point D2 and the connection point H is equivalent to the parallel inductance of the left-handed transmission line structure for the first frequency band. Therefore, the branch between the second ground point D2 and the connection point H, and the first resonant circuit 13, form the first left-handed antenna 10 that supports the first frequency band.

[0337] The first floor edge 510 includes a first floor point J1 and a second floor point J2. The first floor point J1 is where the second ground point D2 is electrically connected to the reference floor 500. The second floor point J2 is where the first resonant circuit 13 is electrically connected to the reference floor 500.

[0338] The feed source 15 is used to excite the branch between the connection point H and the second ground point D2 and the first resonant circuit 13 to form a first resonant mode supporting the first frequency band. The first resonant mode is a left-handed mode supporting the first frequency band. In the left-handed antenna mode, current is distributed between the branch between the second ground point D2 and the connection point H, the first resonant circuit 13, and the first floor point J1 to the second floor point J2 of the first floor edge 510, forming a circular current with relatively uniform current intensity.

[0339] The electrical length of the second radiator 12 is less than 1 / 4 of the wavelength of the first frequency band. Further, the electrical length of the second radiator 12 is greater than or equal to 1 / 8 of the wavelength of the first frequency band. The wavelength refers to the medium wavelength.

[0340] See also Figure 14 , the antenna assembly 100 further includes a connecting element 17 .

[0341] The connecting element 17 is located in a gap between the first radiator 11 , the second radiator 12 , and the first floor edge 510 of the reference floor 500 .

[0342] One end of the connecting element 17 is electrically connected to the connection point H, and one end of the connecting element 17 is electrically connected to the feeding point A.

[0343] The feed source 15 is used to provide an excitation signal in the fourth frequency band.

[0344] The feed source 15 is further used to excite the connection point H to the feeding point A and the first connection element 17 to form a second zeroth-order resonance mode supporting the fourth frequency band.

[0345] The current of the second zero-order resonant mode is distributed in the branch between the second open end E2 and the connection point H, the connecting element 17, and the branch between the feeding point A and the first open end E1, forming a U-shaped current.

[0346] The equivalent electrical length of the current path of the second zero-order resonant mode is equal to or close to half the wavelength of the fourth frequency band. The equivalent electrical length of the current path of the second zero-order resonant mode, including the sum of the electrical length between the second open end E2 and the connection point H, the equivalent electrical length of the connecting element 17, and the electrical length between the feeding point A and the first open end E1, is equal to or close to half the wavelength of the fourth frequency band.

[0347] This application does not specifically limit the size of the fourth frequency band. Optionally, the fourth frequency band includes but is not limited to at least one of the LB band (less than 1 GHz), the MHB band (1-3 GHz), the UHB band (greater than 3 GHz), the Wi-Fi band, the GPS band, etc. For example, the first frequency band is the LB band, the second frequency band is the MHB band, the third frequency band is the N78 band, and the fourth frequency band is the N79 band or the Wi-Fi 5G band. For another example, the first frequency band is the GPS-L1 band, the second frequency band is the Wi-Fi 2.4G band, the third frequency band is the N78 band, and the fourth frequency band is the N79 band or the Wi-Fi 5G band.

[0348] The specific structure of the connecting element 17 is described below with reference to the accompanying drawings.

[0349] In a first optional embodiment, the connecting element 17 includes a first connecting member 171 and a second capacitive element 173. One end of the first connecting member 171 is connected to the connection point H, and the other end of the first connecting member 171 is electrically connected to one end of the second capacitive element 173. The other end of the second capacitive element 173 is electrically connected to the feeding point A.

[0350] Optionally, the first connector 171 includes, but is not limited to, at least one of an electrical connection line, a metal segment, a conductive spring, etc. In this application, the first connector 171 is taken as an example of a metal segment integrally interconnected with the second radiator 12. The first connector 171 and the second radiator 12 can be formed on the same metal plate by CNC milling or the like.

[0351] Optionally, the second capacitive element 173 includes a capacitor or a coupling capacitor gap. When the second capacitive element 173 is a capacitor, one end of the capacitor is electrically connected to the first connector 171, and the other end of the capacitor is electrically connected to the feed point A. When the second capacitive element 173 is a coupling capacitor gap, a smaller coupling gap is formed between the first connector 171 and the feed point A to form the second capacitive element 173.

[0352] Optionally, the center frequency of the fourth frequency band is greater than the center frequency of the third frequency band.

[0353] In this embodiment, the branch between connection point H and feed point A and connecting element 17 form a second open-loop structure. Because the branch between connection point H and feed point A needs to be compatible with the first zeroth-order mode designed to support the third frequency band, a second capacitive element 173 is designed in this embodiment to shorten the physical length of the branch between connection point H and feed point A. This allows the second open-loop structure formed by the branch between connection point H and feed point A and second capacitive element 173 to support a higher frequency band, such as the fourth frequency band. In other words, second capacitive element 173 is used to enable the branch between connection point H and feed point A and connecting element 17 to form a second zeroth-order resonant mode that supports a higher frequency band.

[0354] Specifically, the sum of the electrical length between the second open end E2 and the connection point H, the equivalent electrical length of the first connecting member 171, and the equivalent electrical length of the second capacitive element 173 is or is close to 1 / 2 wavelength of the fourth frequency band, so as to facilitate the branch between the connection point H and the feeding point A and the connecting element 17 to form a second zero-order resonant mode supporting the fourth frequency band.

[0355] In a second optional embodiment, the connecting element 17 includes a second connecting member 172 and a second capacitive element 173. One end of the second connecting member 172 is connected to the feeding point A, and the other end of the second connecting member 172 is electrically connected to one end of the second capacitive element 173. The other end of the second capacitive element 173 is electrically connected to the connection point H.

[0356] In a third optional embodiment, the connecting element 17 includes a first connecting member 171, a second connecting member 172, and a second capacitive element 173. One end of the first connecting member 171 is connected to the connection point H, and the other end of the first connecting member 171 is electrically connected to one end of the second capacitive element 173. One end of the second connecting member 172 is connected to the feeding point A. The other end of the second connecting member 172 is electrically connected to the other end of the second capacitive element 173.

[0357] See also Figure 10 The antenna assembly 100 further includes a second resonant circuit 16. One end of the second resonant circuit 16 is electrically connected to the connection point H, and the other end of the second resonant circuit 16 is grounded. The structure and function of the second resonant circuit 16 can refer to the second resonant circuit 16 in the first embodiment.

[0358] One end of the second resonant circuit 16 is electrically connected to the connection point H, and the other end of the second resonant circuit 16 is grounded.

[0359] Optionally, take the electronic device 1000 as a mobile phone as an example. At present, a single antenna on the frame of a mobile phone generally needs to cover multiple cellular frequency bands or Wi-Fi frequency bands or even GPS frequency bands, and try to cover as many frequency bands as possible in a small size to leave more space and design freedom for other antenna layouts; at the same time, if a single feed point can be used to achieve high performance in multiple frequency bands to meet multi-standard requirements, there is no need to add additional switching switches, which will save costs for the entire RF system. However, the existing frame multi-frequency co-body antenna technology solution is difficult to meet the requirements of simultaneously covering cellular 5G (N78, N79) and Wi-Fi frequency bands (Wi-Fi 2.4G, Wi-Fi 5G), as well as GPS L1 spanning such a large bandwidth from 1.6GHz to 5.8GHz. Therefore, it is of research significance to realize the miniaturization design of multi-frequency broadband with a single antenna.

[0360] This application will use a single feed point to implement a multi-band design including cellular 5G NR+Wi-Fi+GPS (including five bands: GPS L1+N78+N79+Wi-Fi 2.4G+Wi-Fi 5G) under a small-sized metal frame antenna, and can keep each band always present to facilitate flexible switching between cellular and Wi-Fi.

[0361] See also Figure 15 , Figure 15This is an architectural diagram of a multi-frequency antenna design proposed in this application. The antenna assembly provided in this application can be located at any position on the mobile phone. The antenna assembly includes a group of port-to-port short-circuit branches (i.e., the aforementioned first radiator 11 and the second radiator 12), an antenna feed point (i.e., the aforementioned feed point A) and an antenna floor (e.g., the metal middle frame of the mobile phone, i.e., the aforementioned reference floor 500). Among them, the antenna feed point A is directly fed to a short-circuit branch (the aforementioned first radiator 11), while the other port-to-port parasitic branch (the aforementioned second radiator 12) is loaded with multiple groups of LC series-parallel resonant circuits (the aforementioned first resonant circuit 13 and the second resonant circuit 16), and the feed and the parasitic branch (the aforementioned second radiator 12) are also connected through an LC circuit (the aforementioned connecting element 17).

[0362] Among them, (1) the third inductor L3 (for example, 9.1nH), the second capacitor C2 (for example, 0.7pF) and the second inductor L2 (for example, 15nH). The series circuit of the third inductor L3 and the second capacitor C2 is used to form an equivalent grounding in the Wi-Fi 2.4G frequency band, and the parallel circuit of the second inductor L2 and the second capacitor C2 is used to form an equivalent open circuit in the GPS-L1 frequency band. (2) The first inductor L1 (for example, 4.3nH) and the first capacitor C1 (for example, 0.5pF) are used to form an equivalent grounding in the N78 frequency band. (3) The equivalent inductance L4 (for example, 0.5nH) of the first connector and the second connector and the second capacitor 173 (for example, 0.25pF) are used to form an equivalent capacitance in the N79+Wi-Fi 5G frequency band.

[0363] See also Figure 16 , Figure 16 This is a partial schematic diagram of a mobile phone simulation model proposed in this application. The first conductive spring 175 electrically connects the connection point H to the multi-channel LC matching circuit (the aforementioned first resonant circuit 13 and second resonant circuit 16), and the second conductive spring 177 electrically connects the feeding point A to the matching circuit 14. The first conductive spring 175 and the second conductive spring 177 are electrically connected via a first metal segment 176 (or metal connecting wire), a second capacitive element 173, and a second metal segment 178 (or metal connecting wire). The feeding point A and the connection point H are connected by a metal connecting wire series. The length of the first radiator 11 is approximately 6.5 mm, the distance between the feeding point A and the first open end E1 is approximately 2 mm, the length of the second radiator 12 is approximately 10 mm, the distance between the connection point H and the second open end E2 is approximately 4 mm, and the width of the first coupling gap G1 is approximately 1 mm.

[0364] See also Figure 17 , Figure 17 yes Figure 16An S-parameter curve diagram of the antenna assembly 100 in a mobile phone simulation model is provided.

[0365] It can be seen that the antenna assembly 100 has resonance points at 1.6 GHz, 2.4 GHz, 3.6 GHz, 4.9 GHz, and 5.7 GHz (covering the five frequency bands of GPS-L1, Wi-Fi 2.4G, N78, N79, and Wi-Fi 5G). This shows that the antenna assembly 100 provided in this application can simultaneously cover the five frequency bands of GPS-L1, Wi-Fi 2.4G, N78, N79, and Wi-Fi 5G with a relatively small branch size and without the need for switching.

[0366] See also Figure 18 , Figure 18 yes Figure 16 The provided efficiency curve of the antenna assembly 100 in a mobile phone simulation model shows that the efficiency of the antenna assembly 100 at the five frequency points of 1.6 GHz, 2.4 GHz, 3.6 GHz, 4.9 GHz, and 5.7 GHz is approximately -4dB to -5dB, meeting the basic performance requirements for antennas in the GPS-L1, Wi-Fi 2.4G, N78, N79, and Wi-Fi 5G frequency bands.

[0367] See also Figure 19 , Figure 19 yes Figure 16 A schematic diagram of current distribution of the provided antenna assembly 100 when operating in the GPS-L1 frequency band in a mobile phone simulation model is provided.

[0368] For the GPS-L1 frequency band, the parallel circuit of the second inductor device L2 and the second capacitor device C2 at the connection point H is used to form an equivalent open circuit in the GPS-L1 frequency band. At the same time, the series circuit of the first inductor device L1 and the first capacitor device C1 is used to form an equivalent grounding in the N78 frequency band, and for the GPS-L1 frequency band, the equivalent capacitance to ground is used for the parasitic branch (the second radiator 12) to form a left-hand mode (wherein, the left-hand mode generally only requires a branch length much less than a quarter wavelength to generate resonance, and the excitation condition requires the short-circuited branch (the aforementioned second radiator 12) to be connected to the capacitor near the first open end E1 to the ground).

[0369] As can be seen, the feeding branch (first radiator 11) couples and excites the parasitic branch (the aforementioned second radiator 12). The current at the second grounding point D2 of the parasitic branch (the aforementioned second radiator 12) is the largest. This current flows to ground through the equivalent capacitance (first inductor L1 and first capacitor C1) at connection point H, forming a left-handed mode. The left-handed mode supporting the GPS-L1 frequency band corresponds to the aforementioned first resonant mode supporting the first frequency band.

[0370] See also Figure 20 , Figure 20 yes Figure 16 A schematic diagram of current distribution of the antenna assembly 100 is provided when the mobile phone simulation model operates in the Wi-Fi 2.4G frequency band.

[0371] For the Wi-Fi 2.4G frequency band, the series circuit formed by the second capacitor C2 and the third inductor L3 at the connection point H is used to form an equivalent ground in the Wi-Fi 2.4G frequency band. The parasitic branch (the aforementioned second radiator 12) has no effect on the Wi-Fi 2.4G frequency band, and the left-hand mode excited by the feeding branch (the first radiator 11) itself generates resonance in the Wi-Fi 2.4G frequency band.

[0372] As can be seen, the current in the parasitic branch (the aforementioned second radiator 12) is relatively weak, while the current is primarily distributed in the feeding branch (the first radiator 11), forming a left-handed mode from the feeding point A to the first ground point D1. The left-handed mode supporting the Wi-Fi 2.4 GHz band corresponds to the aforementioned second resonant mode supporting the second frequency band.

[0373] See also Figure 21 , Figure 21 yes Figure 16 A schematic diagram of current distribution of the provided antenna assembly 100 when operating in the N78 frequency band in a mobile phone simulation model is provided.

[0374] For the N78 frequency band, the series circuit of the first inductor L1 and the first capacitor C1 at connection point H forms an equivalent ground in the N78 frequency band. This allows current to flow from the second open end E2 of the parasitic stub (the aforementioned second radiator 12) to connection point H, then through the second floor point J2 of the reference floor 500 to the third floor point J3, to the feed point A and the first open end E1 of the feed stub (the first radiator 11), creating a loop similar to a half-wavelength U-shaped open resonant ring (generally referred to as the zeroth-order mode, corresponding to the aforementioned first zeroth-order resonant mode). The current in the N78 frequency band is concentrated between the feed point A and connection point H, and between the second floor point J2 and the third floor point J3 of the reference floor 500, forming the zeroth-order mode of the N78 frequency band, corresponding to the aforementioned first zeroth-order resonant mode.

[0375] See also Figure 22 , Figure 22 yes Figure 16 A schematic diagram of the current distribution of the antenna assembly 100 is provided when operating in the N79 / Wi-Fi 5G frequency band in a mobile phone simulation model.

[0376] For the N79 / Wi-Fi 5G band, the connecting element 17 between the connection point H and the feed point A is used to form an equivalent capacitor, so that the current flows from the second open end E2 of the parasitic branch (the aforementioned second radiator 12) to the connection point H and then through the connection line capacitance (the second capacitive element 173) to the feed point A and the first open end E1 of the feed branch (the first radiator 11), generating a zero-order mode. This zero-order mode is similar to the mode in the N78 band, and the series capacitor (the second capacitive element 173) increases the frequency of this mode generation to 5GHz. Please refer to Figure 22 , the 5.2 GHz current is concentrated at the feeding point A, the connection point H and the connection element 17, forming a zero-order mode as a whole, corresponding to the aforementioned second zero-order resonance mode.

[0377] The antenna assembly 100 provided in this application utilizes multiple groups of LC circuits to form multiple left-hand modes and zero-order modes, achieving coverage of multiple frequency bands in an extremely small size. The two groups of left-hand modes generate GPS-L1 and Wi-Fi 2.4G respectively, and the two groups of zero-order modes generate N78 and N79 / Wi-Fi 5G respectively. The antenna assembly 100 provided in this application can not only achieve the five frequency bands of GPS-L1+N78+N79+Wi-Fi 2.4G+Wi-Fi 5G / N79 in a small-size mobile phone frame environment (actually only 16.5mm length is used), but also achieve the five frequency bands of LB+MHB / Wi-Fi 2.4G+N78 band+Wi-Fi 5G / N79 band. Moreover, each mode has high efficiency and meets practical applications. Only one antenna feeding point is required, saving PCB board layout. No switch is required, saving costs.

[0378] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. An electronic device, characterized in that: The electronic device includes an antenna assembly, the antenna assembly including: a first radiator, the first radiator comprising a first ground point, a feeding point and a first open end; a second radiator, the second radiator comprising a second grounding point, a connection point, and a second open end, wherein a first coupling gap is formed between the second open end and the first open end; a first resonant circuit, one end of the first resonant circuit being electrically connected to the connection point, the other end of the first resonant circuit being grounded, and the first resonant circuit being capacitive with respect to a first frequency band; and a matching circuit, the matching circuit comprising a first capacitive element, one end of the first capacitive element being electrically connected to the feeding point; A feed source is electrically connected to the other end of the first capacitive element, and the feed source is used to excite the branch from the connection point to the second grounding point and the first resonant circuit to form a first resonant mode supporting the first frequency band, and is used to excite the branch between the feed point and the first grounding point and the first capacitive element to form a second resonant mode supporting the second frequency band.

2. The electronic device according to claim 1, wherein The first resonant circuit includes a first capacitor and a first inductor, one end of the first capacitor is electrically connected to the connection point, one end of the first inductor is electrically connected to the other end of the first capacitor, the other end of the first inductor is grounded, and the first capacitor and the first inductor are capacitive in the first frequency band.

3. The electronic device according to claim 1, wherein The antenna assembly also includes a second resonant circuit, one end of the second resonant circuit is electrically connected to the connection point, the other end of the second resonant circuit is grounded, the second resonant circuit is short-circuited for the second frequency band, and the second resonant circuit is open-circuited for the first frequency band.

4. The electronic device according to claim 3, wherein: The second resonant circuit includes a second capacitor, a second inductor, and a third inductor. One end of the second capacitor and one end of the second inductor are both electrically connected to the connection point. One end of the third inductor is electrically connected to the other end of the second capacitor and the other end of the second inductor. The other end of the third inductor is grounded. The second inductor and the second capacitor are configured to open the circuit for the first frequency band, and the second capacitor and the third inductor are configured to short the circuit for the second frequency band.

5. The electronic device according to claim 1, wherein The antenna assembly further includes a reference floor, and the first radiator and the second radiator are both arranged along a first floor edge of the reference floor; The first resonant circuit is short-circuited for the third frequency band; The matching circuit further includes a first matching branch, one end of which is grounded, and the first matching branch is short-circuited for the third frequency band; The feed source is also used to excite the branches between the second open end and the connection point, the first resonant circuit, the first floor edge, the first matching branch, and the branches between the feeding point and the first open end to form a first zeroth-order resonant mode that supports the third frequency band.

6. The electronic device according to claim 5, wherein: The equivalent electrical length of the current path of the first zero-order resonance mode is 1 / 2 wavelength of the third frequency band.

7. The electronic device according to any one of claims 1 to 6, wherein: The antenna assembly further includes: The first radiator and the second radiator are both arranged along a first floor edge of the reference floor; a connecting element, the connecting element being located in a gap between the first radiator, the second radiator, and a first floor edge of the reference floor, one end of the connecting element being electrically connected to the connection point, and one end of the connecting element being electrically connected to the feeding point; The feed source is further used to excite the connection point to the feeding point and the first connection element to form a zero-order resonance mode supporting the fourth frequency band.

8. The electronic device according to claim 7, wherein: The sum of the electrical length between the second open end and the connection point, the equivalent electrical length of the connection element, and the electrical length between the feeding point and the first open end is 1 / 2 wavelength of the fourth frequency band.

9. The electronic device according to claim 7, wherein: The connecting element includes a first connecting member and a second capacitive element, one end of the first connecting member is connected to the connection point, the other end of the first connecting member is electrically connected to one end of the second capacitive element, and the other end of the second capacitive element is electrically connected to the feeding point; or, The connecting element includes a second connecting member and a second capacitive element, one end of the second connecting member is connected to the feeding point, the other end of the second connecting member is electrically connected to one end of the second capacitive element, and the other end of the second capacitive element is electrically connected to the connecting point; or, The connecting element includes a first connecting member, a second connecting member and a second capacitive element, one end of the first connecting member is connected to the connection point, the other end of the first connecting member is electrically connected to one end of the second capacitive element, one end of the second connecting member is connected to the feeding point, and the other end of the second connecting member is connected to the other end of the second capacitive element.

10. The electronic device according to claim 8, wherein The second capacitive element includes a fourth capacitive device or a coupling capacitor gap.

11. An electronic device, characterized in that: The electronic device includes an antenna assembly and a reference ground, wherein the antenna assembly includes: a first radiator, the first radiator being spaced apart along a first edge of the reference floor, the first radiator comprising a first grounding point, a feeding point, and a first open end; a second radiator, the second radiator being spaced apart along the first edge of the reference floor, the second radiator comprising a second grounding point, a connection point, and a second open end, wherein a first coupling gap is formed between the second open end and the first open end; a first resonant circuit, one end of the first resonant circuit being electrically connected to the connection point, the other end of the first resonant circuit being grounded, and the first resonant circuit being short-circuited with respect to the third frequency band; and A matching circuit, the matching circuit further comprising a first matching branch, one end of the first matching branch being grounded, the first matching branch being short-circuited for the third frequency band; a feed source, the feed source being electrically connected to the feed point; a connecting element, the connecting element being located in a gap between the first radiator, the second radiator, and a first floor edge of the reference floor, one end of the connecting element being electrically connected to the connection point, and one end of the connecting element being electrically connected to the feeding point; The feed source is also used to excite the connection point to the feeding point, the first resonant circuit, the first floor edge and the first matching branch to form a first zeroth-order resonant mode supporting the third frequency band; the feed source is also used to excite the connection point to the feeding point and the connecting element to form a second zeroth-order resonant mode supporting the fourth frequency band.

12. The electronic device according to claim 11, wherein: An electrical length of a path formed by the connection point, the feeding point, the first resonant circuit, the first floor edge, and the first matching branch is 1 / 2 wavelength of the third frequency band.

13. The electronic device according to claim 11, wherein The sum of the electrical length between the second open end and the connection point, the equivalent electrical length of the connection element, and the electrical length between the feeding point and the first open end is 1 / 2 wavelength of the fourth frequency band.

14. The electronic device according to claim 11, wherein The connecting element includes a first connecting member and a second capacitive element, one end of the first connecting member is connected to the connection point, the other end of the first connecting member is electrically connected to one end of the second capacitive element, and the other end of the second capacitive element is electrically connected to the feeding point; or, The connecting element includes a second connecting member and a second capacitive element, one end of the second connecting member is connected to the feeding point, the other end of the second connecting member is electrically connected to one end of the second capacitive element, and the other end of the second capacitive element is electrically connected to the connecting point; or, The connecting element includes a first connecting member, a second connecting member and a second capacitive element, one end of the first connecting member is connected to the connection point, the other end of the first connecting member is electrically connected to one end of the second capacitive element, one end of the second connecting member is connected to the feeding point, and the other end of the second connecting member is connected to the other end of the second capacitive element.

15. The electronic device according to claim 11, wherein The first resonant circuit is capacitive for the first frequency band; The matching circuit includes a first capacitive element, one end of which is electrically connected to the feeding point; The feed source is electrically connected to the other end of the first capacitive element, and is used to excite the branch from the connection point to the second grounding point and the first resonant circuit to form a first resonant mode that supports the first frequency band.

16. The electronic device according to claim 11, wherein The feed source is further used to excite the branches between the feed point and the first grounding point and the first capacitive element to form a second resonant mode supporting a second frequency band.

17. An electronic device, characterized in that: The electronic device includes an antenna assembly and a reference ground, wherein the antenna assembly includes: a first radiator, the first radiator being spaced apart along a first edge of the reference floor, the first radiator comprising a first grounding point, a feeding point, and a first open end; a second radiator, the second radiator being spaced apart along the first edge of the reference floor, the second radiator comprising a second grounding point, a connection point, and a second open end, wherein a first coupling gap is formed between the second open end and the first open end; a matching circuit, the matching circuit comprising a first capacitive element, one end of the first capacitive element being electrically connected to the feeding point; the matching circuit further comprising a first matching branch, one end of the first matching branch being grounded, the first matching branch being short-circuited for the third frequency band; a first resonant circuit, one end of the first resonant circuit being electrically connected to the connection point, the other end of the first resonant circuit being grounded, and the first resonant circuit being short-circuited for the third frequency band; a feed source electrically connected to the other end of the first capacitive element; The feed source is used to excite the connection point to the second grounding point to form a second resonant mode supporting the second frequency band, and is also used to excite the connection point to the feeding point, the first resonant circuit, the first floor edge and the first matching branch to form a first zeroth-order resonant mode supporting the third frequency band.

18. The electronic device according to claim 17, wherein: The first resonant circuit is capacitive for a first frequency band; the feed source is used to excite the branch from the connection point to the second grounding point and the first resonant circuit to form a first resonant mode that supports the first frequency band.

19. The electronic device according to claim 17, wherein: The antenna assembly further includes: a connecting element, the connecting element being located in a gap between the first radiator, the second radiator, and a first floor edge of the reference floor, one end of the connecting element being electrically connected to the connection point, and one end of the connecting element being electrically connected to the feeding point; The feed source is further used to excite the connection point to the feeding point and the connection element to form a second zeroth-order resonance mode that supports the fourth frequency band.

20. An electronic device, characterized in that: The electronic device includes an antenna assembly and a reference ground, wherein the antenna assembly includes: a first radiator, the first radiator being spaced apart along a first edge of the reference floor, the first radiator comprising a first grounding point, a feeding point, and a first open end; a second radiator, the second radiator being spaced apart along the first edge of the reference floor, the second radiator comprising a second grounding point, a connection point, and a second open end, wherein a first coupling gap is formed between the second open end and the first open end; a first resonant circuit, one end of the first resonant circuit being electrically connected to the connection point, the other end of the first resonant circuit being grounded, the first resonant circuit being capacitive with respect to the first frequency band and being short-circuited with respect to the third frequency band; and A matching circuit, the matching circuit further comprising a first matching branch, one end of the first matching branch being grounded, the first matching branch being short-circuited for the third frequency band; The feed source is used to excite the branch from the connection point to the second grounding point and the first resonant circuit to form a first resonant mode supporting the first frequency band. The feed source is also used to excite the connection point to the feeding point, the first resonant circuit, the first floor edge and the first matching branch to form a first zeroth-order resonant mode supporting the third frequency band.

21. An electronic device, characterized in that: The electronic device includes an antenna assembly and a reference ground, wherein the antenna assembly includes: a first radiator, the first radiator being spaced apart along a first edge of the reference floor, the first radiator comprising a first grounding point, a feeding point, and a first open end; a second radiator, the second radiator being spaced apart along the first edge of the reference floor, the second radiator comprising a second grounding point, a connection point, and a second open end, wherein a first coupling gap is formed between the second open end and the first open end; a first resonant circuit, one end of the first resonant circuit being electrically connected to the connection point, the other end of the first resonant circuit being grounded, and the first resonant circuit being capacitive with respect to a first frequency band; and The matching circuit further comprises a first matching branch, one end of which is grounded; a connecting element, the connecting element being located in a gap between the first radiator, the second radiator, and a first floor edge of the reference floor, one end of the connecting element being electrically connected to the connection point, and one end of the connecting element being electrically connected to the feeding point; The feed source is used to excite the branch from the connection point to the second grounding point and the first resonant circuit to form a first resonant mode supporting the first frequency band. The feed source is also used to excite the connection point to the feeding point and the first connecting element to form a zero-order resonant mode supporting the fourth frequency band.

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