Electronic device

Abstract

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

Description

Technical Field

[0001] This application relates to the field of communication technology, specifically to an electronic device. Background Technology

[0002] With the iteration of communication standards such as 5G / 6G, Wi-Fi 6E, and Bluetooth 5.0, mobile phones and other electronic devices need to be compatible with low-frequency bands, mid-to-high-frequency bands, and 5G frequency bands such as N77 / N78 / N79. Multi-band support has become a fundamental condition for ensuring global roaming and network switching. At the same time, competition for internal space in smartphones is fierce. Components such as batteries and camera modules encroach on antenna clearance, leaving limited clearance area for antennas in electronic devices. Therefore, how to design antenna components in electronic devices to support multiple frequency bands while being miniaturized has become a technical problem that needs to be solved. Summary of the Invention

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

[0004] In a first aspect, embodiments of this application provide an electronic device, the electronic device including an antenna assembly, the antenna assembly comprising: A first radiator, the first radiator including a first grounding point, a feed point and a first open end; The second radiator includes a second grounding point, a connection point, and a second opening end, with a first coupling gap between the second opening end and the first opening end. A first resonant circuit, one end of which is electrically connected to the connection point, and the other end of which is grounded, wherein the first resonant circuit is capacitive with respect to the first frequency band; A matching circuit, the matching circuit including a first capacitive element, one end of the first capacitive element being electrically connected to the feed point; The feed source is electrically connected to the other end of the first capacitive element. The feed source is used to excite the stubs from the connection point to the second ground point and the first resonant circuit to form a first resonant mode supporting the first frequency band, and to excite the stubs from the feed point to the first ground point and the first capacitive element to form a second resonant mode supporting the second frequency band.

[0005] The electronic device provided in this application includes an antenna assembly, which includes a first radiator, a second radiator, a first resonant circuit, a matching circuit, and a feed source. The first radiator includes a first ground point, a feed point, and a first opening. The second radiator includes a second ground point, a connection point, and a second opening, with a first coupling gap between the second opening and the first opening. One end of the first resonant circuit is electrically connected to the connection point, and the other end of the first resonant circuit is grounded. The first resonant circuit is capacitive for a first frequency band. The matching circuit includes a first capacitive element, one end of which is electrically connected to the feed point. 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 ground point to form a first resonant mode supporting the first frequency band, and to excite the feed point to the first ground point to form a second resonant mode supporting the second frequency band. Thus, compared to each antenna assembly supporting only one frequency band, the antenna assembly can support both the first and second frequency bands, thereby supporting more frequency bands while being miniaturized.

[0006] Secondly, embodiments of this application provide an electronic device, the electronic device including an antenna assembly and a reference ground, the antenna assembly including: A first radiator is provided at intervals along a first floor edge of the reference floor, and the first radiator includes a first grounding point, a power supply point, and a first open end. The second radiator is arranged at intervals along the first floor edge of the reference floor. The second radiator includes a second grounding point, a connection point, and a second open end. The second open end and the first open end are connected by a first coupling gap. A first resonant circuit, one end of which is electrically connected to the connection point, and the other end of which is grounded; 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 with respect to the third frequency band. A feed source, wherein the feed source is electrically connected to the feed point; A connecting element is located in the gap between the first radiator, the second radiator and the first floor edge of the reference floor, one end of the connecting element is electrically connected to the connection point, and the other end of the connecting element is electrically connected to the feed point; The feed source is also used to excite the connection point to the feed point, the first resonant circuit, the first ground plane and the first matching branch to form a first zero-order resonant mode supporting the third frequency band; the feed source is also used to excite the connection point to the feed point and the connecting element to form a second zero-order resonant mode supporting the fourth frequency band.

[0007] The electronic device provided in this application embodiment includes an antenna assembly and a reference ground plane. The antenna assembly includes a first radiator, a second radiator, a first resonant circuit, a matching circuit, a feed source, and connecting elements. The first radiator is spaced along the first ground plane edge of the reference ground plane and includes a first ground point, a feed point, and a first opening. The second radiator is spaced along the first ground plane edge of the reference ground plane and includes a second ground point, a connection point, and a second opening. A first coupling gap exists between the second opening and the first opening. One end of the first resonant circuit is electrically connected to the connection point, and the other end of the first resonant circuit is grounded. 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 short-circuited for the third frequency band. The feed source is electrically connected to the feed point. The connecting element is located in the gap between the first radiator and the first ground plane edge of the reference ground. One end of the connecting element is electrically connected to the connection point, and the other end of the connecting element is electrically connected to the feed point. The feed source is also used to excite the connection point to the feed point, the first resonant circuit, the first ground plane edge, and the first matching branch to form a first zero-order resonant mode supporting the third frequency band. The feed source is also used to excite the connection point to the feed point and the connecting element to form a second zero-order resonant mode supporting the fourth frequency band. Thus, compared to each antenna assembly supporting one frequency band, the antenna assembly can support the third and fourth frequency bands, thereby supporting more frequency bands while being miniaturized.

[0008] Thirdly, embodiments of this application provide an electronic device, the electronic device including an antenna assembly and a reference ground, the antenna assembly including: A first radiator is provided at intervals along a first floor edge of the reference floor, and the first radiator includes a first grounding point, a power supply point, and a first open end. The second radiator is arranged at intervals along the first floor edge of the reference floor. The second radiator includes a second grounding point, a connection point, and a second open end. The second open end and the first open end are connected by a first coupling gap. The matching circuit includes a first capacitive element, one end of which is electrically connected to the feed point; the matching circuit also includes a first matching branch, one end of which is grounded, and the first matching branch is short-circuited for the third frequency band. A feed source, wherein 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 ground point to form a second resonant mode supporting the second frequency band, and is also used to excite the connection point to the feed point, the first resonant circuit, the first ground edge and the first matching branch to form a first zero-order resonant mode supporting the third frequency band.

[0009] The electronic device provided in this application embodiment includes an antenna assembly and a reference ground plane. The antenna assembly includes a first radiator, a second radiator, a matching circuit, and a feed source. The first radiator is spaced along a first ground plane edge of the reference ground plane and includes a first ground point, a feed point, and a first open end. The second radiator is spaced along a first ground plane edge of the reference ground plane and includes a second ground point, a connection point, and a second open end. A first coupling gap exists between the second open end and the first open end. The matching circuit includes a first capacitive element, one end of which is electrically connected to the feed point. The matching circuit also includes a first matching branch, one end of which is grounded and short-circuited for the 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 ground point to form a second resonant mode supporting the second frequency band, and also to excite the connection point to the feed point, the first resonant circuit, the first ground plane edge, and the first matching branch to form a first zero-order resonant mode supporting the third frequency band. Thus, compared to each antenna assembly supporting only one frequency band, the antenna assembly can support a second and a third frequency band, thereby supporting more frequency bands while being miniaturized.

[0010] Fourthly, embodiments of this application provide an electronic device, the electronic device including an antenna assembly and a reference ground plane, the antenna assembly including: A first radiator is provided at intervals along a first floor edge of the reference floor, and the first radiator includes a first grounding point, a power supply point, and a first open end. The second radiator is arranged at intervals along the first floor edge of the reference floor. The second radiator includes a second grounding point, a connection point, and a second open end. The second open end and the first open end are connected by a first coupling gap. A first resonant circuit, one end of which is electrically connected to the connection point, and the other end of which is grounded; the first resonant circuit is capacitive with respect to a first frequency band; and The matching circuit further includes a first matching branch, one end of which is grounded, and the first matching branch is short-circuited with respect to the third frequency band. The feed source is used to excite the stub from the connection point to the second ground 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 stub from the connection point to the feed point, the first resonant circuit, the first ground edge and the first matching branch to form a first zero-order resonant mode supporting the third frequency band.

[0011] The electronic device provided in this application includes an antenna assembly and a reference ground plane. The antenna assembly includes a first radiator, a second radiator, a matching circuit, and a feed source. The first radiator is spaced along a first ground plane edge of the reference ground plane and includes a first ground point, a feed point, and a first opening. The second radiator is spaced along the first ground plane edge of the reference ground plane and includes a second ground point, a connection point, and a second opening. A first coupling gap exists between the second opening and the first opening. A first resonant circuit is included, with one end electrically connected to the connection point and the other end grounded. The first resonant circuit is capacitive for a first frequency band. The matching circuit further includes a first matching branch, with one end grounded and short-circuited for a third frequency band. The feed source is used to excite the connection point to the second ground point to form a first resonant mode supporting the first frequency band. The feed source is also used to excite the connection point to the feed point, the first resonant circuit, the first ground plane edge, and the first matching branch to form a first zero-order resonant mode supporting the third frequency band. Thus, compared to each antenna assembly supporting only one frequency band, the antenna assembly can support the first and third frequency bands, thereby supporting more frequency bands while being miniaturized.

[0012] Fifthly, embodiments of this application provide an electronic device, the electronic device including an antenna assembly and a reference ground plane, the antenna assembly including: A first radiator is provided at intervals along a first floor edge of the reference floor, and the first radiator includes a first grounding point, a power supply point, and a first open end. The second radiator is arranged at intervals along the first floor edge of the reference floor. The second radiator includes a second grounding point, a connection point, and a second open end. The second open end and the first open end are connected by a first coupling gap. A first resonant circuit, one end of which is electrically connected to the connection point, and the other end of which is grounded, wherein the first resonant circuit is capacitive with respect to the first frequency band; The matching circuit further includes a first matching branch, one end of which is grounded; A connecting element is located in the gap between the first radiator, the second radiator and the first floor edge of the reference floor, one end of the connecting element is electrically connected to the connection point, and the other end of the connecting element is electrically connected to the feed point; The feed source is used to excite the stubs from the connection point to the second ground 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 feed point and the connecting element to form a second zero-order resonant mode supporting the fourth frequency band. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below.

[0014] Figure 1 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application; Figure 2 This is an exploded view of the structure of an electronic device provided in an embodiment of this application; Figure 3 This is a simplified rear view of the electronic device with the back cover removed, as provided in the embodiments of this application. Figure 4 This is a schematic diagram of the structure of an antenna assembly provided in Embodiment 1 of this application. Figure 1 ; Figure 5 This is a schematic diagram of the structure of an antenna assembly provided in Embodiment 1 of this application. Figure 2 ; Figure 6 This is a schematic diagram of the structure of an antenna assembly provided in Embodiment 1 of this application. Figure 3 ; Figure 7 This is a schematic diagram of the structure of an antenna assembly provided in Embodiment 1 of this application. Figure 4 ; Figure 8 This is a schematic diagram of the structure of an antenna assembly provided in Embodiment 1 of this application. Figure 5 ; Figure 9 This is a schematic diagram of the structure of an antenna assembly provided in Embodiment 1 of this application. Figure 6 ; Figure 10 This is a schematic diagram of the structure of an antenna assembly provided in Embodiment 1 of this application. Figure 7 ; Figure 11 This is a schematic diagram of the structure of an antenna assembly provided in Embodiment 2 of this application; Figure 12 This is a schematic diagram of the structure of an antenna assembly provided in Embodiment 3 of this application; Figure 13 This is a schematic diagram of the structure of an antenna assembly provided in Embodiment 4 of this application; Figure 14 This is a schematic diagram of the structure of an antenna assembly provided in Embodiment 5 of this application; Figure 15 This is an architecture diagram of a multi-frequency antenna design proposed in this application; Figure 16 This is a partial schematic diagram of a mobile phone simulation model proposed in this application; Figure 17 yes Figure 16The provided antenna assembly's S-parameter curves in the mobile phone simulation model; Figure 18 yes Figure 16 Efficiency curves of the provided antenna components in a mobile phone simulation model; Figure 19 yes Figure 16 A schematic diagram of the current distribution of the provided antenna assembly in the GPS-L1 frequency band when operating in a mobile phone simulation model; Figure 20 yes Figure 16 The provided diagram shows the current distribution of the antenna assembly operating in the Wi-Fi 2.4G band in a mobile phone simulation model; Figure 21 yes Figure 16 A schematic diagram of the current distribution of the provided antenna assembly operating in the N78 frequency band in a mobile phone simulation model; Figure 22 yes Figure 16 The provided antenna assembly is shown in the current distribution diagram when operating in the N79 / Wi-Fi 5G band in a mobile phone simulation model.

[0015] Explanation of icon numbers: Electronic device 1000; Antenna assembly 100; Display screen 200; Mid-frame 300; Mid-plate 310; Bezel 320; Top bezel 321; First side bezel 322; Bottom bezel 324; Second side bezel 323; Rear cover 400; Reference ground 500; Main board 600; Sub-board 800; First radiator 11; Second radiator 12; First resonant circuit 13; Matching circuit 14; Feed source 15; First grounding point D1; Feed point A; First opening end E1; Second Open end E2; Connection point H; Second grounding point D2; First coupling gap G1; First capacitive element 141; First ground point J1; Second ground point J2; Third ground point J3; Fourth ground point J4; Second capacitor C2; Second inductor L2; Third inductor L3; First capacitor C1; First inductor L1; First matching branch 142; Connecting element 17; First connector 171; Second connector 172; Second capacitive element 173. Detailed Implementation

[0016] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the embodiments described in this application are only a part of the embodiments, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without creative effort are within the protection scope of this application.

[0017] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0018] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, an assembly or device comprising one or more components is not limited to the one or more components listed, but may optionally also include one or more components not listed but inherent to the exemplified product, or one or more components that it should have based on the described function.

[0019] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of an electronic device 1000 provided in an embodiment of this application. The electronic device 1000 includes, but is not limited to, devices with communication functions such as mobile phones, tablets, laptops, computers, wearable devices, drones, robots, and digital cameras. This embodiment uses a mobile phone as an example for illustration; other electronic devices can refer to this embodiment.

[0020] Please see Figure 2 , Figure 2This is a partially exploded view of the electronic device 1000 provided in this application embodiment. The electronic device 1000 includes an antenna assembly 100. Taking a mobile phone as an example, the working environment of the antenna assembly 1000 is illustrated. The electronic device 1000 includes a display screen 200, a middle frame 300, and a back cover 400 arranged sequentially along the thickness direction. The middle frame 300 includes a middle plate 310 and a bezel 320. The bezel 320 surrounds the display screen 200, the middle plate 310, and the back cover 400. The bezel 320 is a conductive bezel, such as a metal bezel. There are receiving spaces between the display screen 200 and the middle plate 310, and between the middle plate 310 and the back cover 400, to accommodate a motherboard 600, a camera module, a receiver module, a battery 700, a sub-board 800, and various sensors and other devices. The bezel 320 surrounds the edge of the display screen 200 on one side along its thickness direction, and surrounds the edge of the back cover 400 on the other side along its thickness direction, forming a complete external structure of the electronic device 1000. In this embodiment, the bezel 320 and the middle plate 310 are an integral structure, for example, formed by processing a metal sheet. The bezel 320 and the back cover 400 are separate structures. The above describes the working environment of the antenna assembly 100 using a mobile phone as an example, but the antenna assembly 100 of this application is not limited to the above working environment.

[0021] Please see Figure 3 , Figure 3 This is a partial rear view of the electronic device 1000 provided in this application embodiment without the back cover 400. The frame 320 includes a top frame 321, a first side frame 322, a bottom frame 324, and a second side frame 323 connected sequentially. The top frame 321 and bottom frame 324 are arranged opposite to each other, and the first side frame 322 and second side frame 323 are connected between the top frame 321 and the bottom frame 324 and are arranged opposite to each other. Specifically, the top frame 321 is the side away from the ground when the user holds and uses the electronic device 1000 in portrait mode (screen facing the user), and the bottom frame 324 is the side facing the ground when the user holds and uses the electronic device 1000 in portrait mode (screen facing the user). The first side frame 322 is the left side when the user holds and uses the electronic device 1000 in portrait mode (screen facing the user). The second side frame 323 is the right side when the user holds and uses the electronic device 1000 in portrait mode (screen facing the user). Of course, the first side frame 322 can also be the right side when the user holds and uses the electronic device 1000 in portrait mode (screen facing the user). The second side frame 323 is the left side when the user holds and uses the electronic device 1000 (screen facing the user).

[0022] Optionally, the top border 321 is a straight border, and both the first side border 322 and the second side border 323 have straight borders in the middle and curved borders at both ends. The curvature angles of the curved borders at both ends of the first side border 322 are close to or equal to 90°. The curvature angles of the curved borders at both ends of the second side border 323 are also close to or equal to 90°. The curved borders are rounded. The bottom border 324 is a straight border.

[0023] Please see Figure 3 and Figure 4 The electronic device 1000 also includes a reference ground plane 500. The reference ground plane 500 is located within the area enclosed by the frame 320. The reference ground plane 500 is generally rectangular in shape. Various slots, holes, etc., are formed on the reference ground plane 500's reference ground edge as needed to accommodate components or avoid other structures within the mobile phone. The reference ground plane 500 includes, but is not limited to, the metal alloy portion of the middle plate 310 and the reference ground metal portion of the circuit board (including the main board 600 and the sub-board 800).

[0024] For details, please refer to Figure 3 and Figure 4 The 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 connected end to end. The second floor edge 520 is positioned opposite to the top frame 321. The first floor edge 510 is positioned opposite to the first side frame 322. The third floor edge 530 is positioned opposite to the second side frame 323. The fourth floor edge 540 is positioned opposite to the bottom frame 324.

[0025] For ease of description, the direction along the length of the electronic device 1000 towards the top border 321 is defined as the +Y direction; the direction along the length of the electronic device 1000 towards the bottom border 324 is defined as the -Y direction; the direction along the width of the electronic device 1000 towards the first side border 322 is defined as the +X direction; the direction along the width of the electronic device 1000 towards the second side border 323 is defined as the -X direction. The direction along the thickness of the electronic device 1000 towards the display screen 200 is defined as the +Z direction; and the direction along the width of the electronic device 1000 towards the back cover is defined as the -Z direction.

[0026] The specific structure of the electronic device 1000 and antenna assembly 100 provided in Embodiment 1 will be illustrated below with reference to the accompanying drawings.

[0027] Please see 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 15.

[0028] This application does not specifically limit the material of the first radiator 11. Optionally, the first radiator 11 may be made of a conductive material, specifically including but not limited to conductive materials such as metals and alloys. This application does not specifically limit the shape of the first radiator 11. For example, the shape of the first radiator 11 may include but is not limited to strips, sheets, rods, coatings, and films. 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 trajectory of the first radiator 11. Optionally, the first radiator 11 may extend along a straight line, a curve, or a bend. The first radiator 11 described above may be a line of uniform width on its extension trajectory, or it may be a strip of varying width, such as one with a gradually changing width or a widened region.

[0029] 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 a plastic frame 320, a metal radiator located within or on the surface of the frame 320, a flexible circuit board antenna formed on a flexible printed circuit board (FPC), a laser-directly formed antenna (LDS), a printed-directly formed antenna (PDS), a conductive sheet antenna (e.g., a metal bracket antenna), etc. In this embodiment, the first radiator 11 is taken as part of the metal frame 320 of the electronic device 1000.

[0030] This application does not specify the exact location of the first radiator 11 on the metal frame 320. For example, the first radiator 11 may be located on the top frame 321, the first side frame 322, the second side frame 323, or the bottom frame 324, etc.

[0031] This application takes the first radiator 11 located at the first side frame 322 as an example. The first radiator 11 is arranged at intervals along the first floor edge 510. The extending direction of the first radiator 11 is flush with the extending direction of the first floor edge 510.

[0032] Please see Figure 3 and Figure 4 The first radiator 11 includes a first grounding point D1, a feed point A, and a first open end E1, which are arranged at intervals.

[0033] For details, please refer to Figure 3 and Figure 4The first radiator 11 is a section of the metal frame 320. Feed point A is a local area on the first radiator 11. To facilitate the connection between 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 feed point A, so as to electrically connect it to the feed source 15 on the main board 600 via a feed spring. Of course, in other embodiments, the small protrusion may not be provided at the location of feed point A.

[0034] Optional, please refer to 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, respectively. The feed point A is located immediately adjacent to the first open end E1. The distance between the feed point A and the first open end E1 is less than the distance between the feed point A and the first grounding point D1.

[0035] Please see Figure 3 and Figure 4 The second radiator 12 includes a second open end E2, a connection point H, and a second grounding point D2 arranged sequentially.

[0036] 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.

[0037] Optionally, the second open end E2 and the second grounding point D2 are the two ends of the second radiator 12, respectively. 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 less than the distance between the connection point H and the second grounding point D2.

[0038] Please see Figure 3 and Figure 4 The second opening end E2 and the first opening end E1 are connected by a first coupling gap G1. The first radiator 11 and the second radiator 12 are coupled through the first coupling gap G1.

[0039] The first coupling gap G1 is also an insulating gap, and its width is 0.5~2mm, but not limited to this size. The first radiator 11 and the second radiator 12 can be capacitively coupled through the first coupling gap G1. Optionally, the first radiator 11 and the second radiator 12 can be regarded as two parts formed by the frame 320 being separated by the first coupling gap G1. Here, "capacitive coupling" means that the first coupling gap G1 between the first radiator 11 and the second radiator 12 generates an electric field, and the signal of 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.

[0040] Matching circuit 14 is electrically connected between feed point A and feed source 15. Matching circuit 14 is used to achieve impedance matching between the port of feed source 15 and the port of feed point A of the first radiator 11.

[0041] Please see Figure 5 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 first capacitor. Optionally, the first capacitor is a small capacitor with a capacitance value of 0~2pF. For example, the capacitance value of the first capacitor is any one or any two of the following: 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.

[0042] The matching circuit 14 also includes at least one of a capacitor, an inductor, a resistor, etc.

[0043] The electrical connections described in this application include direct electrical connections between two structures, or indirect electrical connections via other components. In this embodiment, the feed source 15 and the feed point A are indirectly electrically connected via radio frequency transmission lines, feed springs, etc.

[0044] The feed 15 includes, but is not limited to, radio frequency transceiver chips, radio frequency front-end modules, etc. Specifically, the feed 15 is used to provide radio frequency signals in at least the first frequency band. Optionally, when the feed 15 is excited, the first radiator 11 is the main radiating branch, and the second radiator 12 is the parasitic radiating branch.

[0045] 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.

[0046] This application does not specifically limit the size of the first frequency band. Optionally, the first frequency band may include, but is not limited to, at least one of the following: LB band (less than 1 GHz), MHB band (1-3 GHz), UHB band (greater than 3 GHz), Wi-Fi band, GPS band, etc. For example, the first frequency band may include the GPS-L1 band.

[0047] Please see Figure 5 The first resonant circuit 13 is capacitive with respect to the first frequency band. Optionally, the first resonant circuit 13 includes at least a first capacitor. The first capacitor is capacitive with respect to the first frequency band.

[0048] This indicates that the maximum frequency of the first frequency band is less than the resonant frequency of the first resonant circuit 13. The first resonant circuit 13 is capacitive in the first frequency band, which means that the total impedance of the first resonant circuit 13 is dominated by the capacitive reactance of the capacitor (i.e., |XC|>|XL|), which is manifested as: the current phase leads the voltage phase (capacitive impedance characteristic). At this time, the first resonant circuit 13 is equivalent to a capacitor element.

[0049] In the antenna assembly described above, the stub between the second grounding 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, the first resonant circuit 13, for the first frequency band, is equivalent to a series capacitor of the left-handed transmission line structure, and the stub between the second grounding point D2 and the connection point H, for the first frequency band, is equivalent to a parallel inductor of the left-handed transmission line structure. Therefore, the stub between the second grounding point D2 and the connection point H, and the first resonant circuit 13, form the first left-handed antenna 10 supporting the first frequency band.

[0050] Please see 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 the position where the second ground point D2 is electrically connected to the reference floor 500. The second floor point J2 is the position where the first resonant circuit 13 is electrically connected to the reference floor 500.

[0051] The feed source 15 is used to excite the stubs from the connection point H to 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, the current is distributed between the stubs between the second ground point D2 and the connection point H, the first resonant circuit 13, and between the first ground point J1 and the second ground point J2 of the first ground edge 510, forming a relatively uniform ring current.

[0052] The electrical length of the second radiator 12 is less than 1 / 4 wavelength of the first frequency band. Further, the electrical length of the second radiator 12 is greater than or equal to 1 / 8 wavelength of the first frequency band. Here, wavelength refers to the dielectric wavelength.

[0053] In the antenna assembly described above, the stub 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 a series capacitor in the left-handed transmission line structure, and the stub between the first ground point D1 and the feed point A is equivalent to a parallel inductor in the left-handed transmission line structure for the second frequency band. Therefore, the stub between the first ground point D1 and the feed point A, and the first capacitive element 141 form a second left-handed antenna 20 supporting the second frequency band.

[0054] Please see Figure 4 The first floor edge 510 also includes a third floor point J3 and a fourth floor point J4. The third floor point J3 is the location where the feed 15 is electrically connected to the reference floor 500. The fourth floor point J4 is the location where the first grounding point D1 is electrically connected to the reference floor 500.

[0055] The feed 15 is also used to provide an excitation signal for the second frequency band.

[0056] The feed 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 between the stub between the first ground point D1 and the feed point A, the first capacitive element 141, and between the third ground point J3 and the fourth ground edge of the first ground edge 510, forming a relatively uniform ring current.

[0057] This application does not specify the size of the second frequency band. Optionally, the second frequency band may include, but is not limited to, at least one of the following: LB band (less than 1 GHz), MHB band (1-3 GHz), UHB band (greater than 3 GHz), Wi-Fi band, GPS band, etc.

[0058] 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. As another example, the first frequency band is the GPS-L1 band, and the second frequency band is the Wi-Fi 2.4G band.

[0059] The electrical length of the first radiator 11 is less than one-quarter of the wavelength of the second frequency band. Further, the electrical length of the first radiator 11 is greater than or equal to one-eighth of the wavelength of the second frequency band. Here, wavelength refers to the wavelength of the medium.

[0060] This application designs the structure of the antenna assembly, particularly the matching circuit 14, which includes a first capacitive element 141 and a first resonant circuit 13 that exhibits capacitive reactance for the first frequency band, thereby forming a first left-handed antenna 10 supporting the first frequency band and a second left-handed antenna 20 supporting the second frequency band. The size of the first frequency band differs from that of the second frequency band, and the current distribution positions of the first and second frequency bands are also different, thereby improving the isolation between the first and second frequency bands.

[0061] The electronic device 1000 provided in this application embodiment 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 15. The first radiator 11 includes a first ground point D1, a feed point A, and a first opening E1. The second radiator 12 includes a second ground point D2, a connection point H, and a second opening E2, with a first coupling gap G1 between the second opening E2 and the first opening 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. A resonant circuit 13 is capacitive for the 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 assembly supporting one frequency band, the antenna assembly 100 can support both the first and second frequency bands, thereby supporting more frequency bands while being miniaturized.

[0062] Please see Figure 6 The antenna assembly 100 also includes a second resonant circuit 16.

[0063] 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, so that the signal of the second frequency band is grounded through the second resonant circuit 16 and not 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.

[0064] In this circuit, the second resonant circuit 16 is open-circuited 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 an open state, and is used to block the signal in the first frequency band.

[0065] In this circuit, 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, so as to allow the signal in the second frequency band to pass through without obstruction.

[0066] The second resonant circuit 16 includes inductors and / or capacitors, etc.

[0067] Optionally, the second resonant circuit 16 includes a parallel LC circuit, the resonant frequency of which is the center frequency of the first frequency band. At the center frequency of the first frequency band, the inductive reactance (XL) and capacitive reactance (XC) are equal and opposite in phase, resulting in the maximum combined impedance (open circuit).

[0068] Optionally, the second resonant circuit 16 further includes a series LC circuit, the resonant frequency of which is the center frequency of the second frequency band. At the center frequency of the second frequency band, the inductive reactance (XL) and capacitive reactance (XC) cancel each other out, resulting in a minimum combined impedance (short circuit).

[0069] This application does not impose specific limitations on the structure of the second resonant circuit 16.

[0070] For example, please see Figure 7 The second resonant circuit 16 includes a second capacitor C2, a second inductor L2, and a third inductor L3.

[0071] 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 ends of the second capacitor C2 and the second inductor L2, and the other end of the third inductor L3 is grounded. The second inductor L2 and the second capacitor C2 are used 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.

[0072] 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.

[0073] Optionally, the second capacitor C2 is a small capacitor with a capacitance value of 0~2pF. For example, the capacitance value of the second capacitor C2 is any one or any two of the following: 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.

[0074] Optionally, the inductance value of the second inductor L2 is 10~20nH. For example, the inductance value of the second inductor L2 is any one or any two of 10nH, 11nH, 12nH, 13nH, 14nH, 15nH, 16nH, 17nH, 18nH, 19nH, and 20nH.

[0075] Optionally, the inductance value of the third inductor L3 is 6~12nH. For example, the inductance value of the third inductor L3 is any one or any two of the following: 6nH, 7nH, 8nH, 8.1nH, 8.2nH, 8.3nH, 8.4nH, 8.5nH, 8.6nH, 8.7nH, 8.8nH, 8.9nH, 9nH, 9.1nH, 9.2nH, 9.3nH, 9.4nH, 9.5nH, 9.6nH, 9.7nH, 9.8nH, 9.9nH, 10nH, 11nH, and 12nH.

[0076] Optionally, both the first radiator 11 and the second radiator 12 are disposed along the first floor edge 510 of the reference floor 500.

[0077] Furthermore, 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, which is conducive to forming an open-loop structure of the third frequency band.

[0078] The first resonant circuit 13 is short-circuited in the third frequency band, indicating that the first resonant circuit 13 has reached the series resonance state at this time. This is manifested as follows: the inductive reactance XL and the capacitive reactance XC are equal in magnitude and opposite in phase, thus canceling each other out; the total impedance is close to zero (the theoretical value is pure resistance, but in reality it is affected by component losses); the current reaches its maximum value, and the signal passes through without obstruction.

[0079] 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.

[0080] This application does not impose specific limitations on the structure of the first resonant circuit 13.

[0081] For example, please see Figure 7 The first resonant circuit 13 includes a first capacitor C1 and a first inductor L1.

[0082] One end of the first capacitor C1 is electrically connected to the connection point H, and 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 with respect to the first frequency band.

[0083] 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: (1) In formula (1), L is the inductance of the first inductor L1, and C is the capacitance of the first capacitor C1. 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.

[0084] Optionally, the first inductor L1 is a small inductor with an inductance value of 2~6nH. For example, the inductance value of the first inductor L1 can be 2nH, 2.1nH, 2.2nH, 2.3nH, 2.4nH, 2.5nH, 2.6nH, 2.7nH, 2.8nH, 2.9nH, 3nH, 3.1nH, 3.2nH, 3.3nH, 3.4nH, 3.5nH, 3.6nH, 3.7nH, 3.8nH, 3.9nH, or 4nH. The inductance value is any one or any two of the following values: 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.

[0085] Please see 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 the end of the first capacitive element 141 away from the feed point A, and the first matching branch 142 is short-circuited for the third frequency band.

[0086] The first matching branch 142 includes, but is not limited to, a series LC resonant circuit consisting of a fifth capacitor and a fourth inductor. The resonant frequency of the first matching branch 142 is the center frequency of the third frequency band, thus short-circuiting the third frequency band. The capacitance value of the fifth capacitor and the inductance value of the fourth inductor can be obtained according to the aforementioned formula (1).

[0087] The capacitance of the fifth capacitor is 0~2pF. The inductance of the fourth inductor is 2~6nH.

[0088] This application does not specifically limit the size of the third frequency band. Optionally, the third frequency band may include, but is not limited to, at least one of the following: LB band (less than 1 GHz), MHB band (1-3 GHz), UHB band (greater than 3 GHz), Wi-Fi band, GPS band, etc. For example, the first frequency band may be the LB band, the second frequency band may be the MHB band, and the third frequency band may be the UHB band. As another example, the first frequency band may be the GPS-L1 band, the second frequency band may be the Wi-Fi 2.4 GHz band, and the third frequency band may be the UHB band.

[0089] Furthermore, the first capacitive element 141 and the first matching branch 142 can also serve as part of the matching circuit 14 when the feed 15 is in operation.

[0090] For the third frequency band, the first resonant circuit 13, the stub from connection point H to feed point A, the first matching branch 142, and the portion between the second ground point J2 and the third ground point J3 of the first ground edge 510 form a first open-loop structure. The opening of the first open-loop structure is the first coupling gap G1.

[0091] The feed 15 is also used to provide an excitation signal for the third frequency band.

[0092] The feed source 15 is also used to excite the first resonant circuit 13, the connection point H to the feed point A, the first matching branch 142 and the first ground edge 510 to form a first zero-order resonant mode supporting the third frequency band.

[0093] The current distribution of the first zero-order resonant mode is formed by the stubs between the second open end E2 and the connection point H, the first resonant circuit 13, the second ground point J2 to the third ground point J3 of the first ground edge 510, the first matching branch 142 and the stubs between the feed point A and the first open end E1, forming a U-shaped current.

[0094] The equivalent electrical length of the current path in the first zero-order resonant mode is or close to half the wavelength of the third frequency band. The equivalent electrical length of the current path in 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 ground point J2 and the third ground point J3 of the first ground edge 510, the equivalent electrical length of the first matching branch 142, and the sum of the electrical length from the feed point A to the first open end E1, which is or close to half the wavelength of the third frequency band.

[0095] Please see Figure 9 The antenna assembly 100 also includes a connecting element 17.

[0096] Please see 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.

[0097] Please see Figure 9 One end of the connecting element 17 is electrically connected to the connection point H, and the other end of the connecting element 17 is electrically connected to the feed point A.

[0098] The feed source 15 is used to provide the excitation signal for the fourth frequency band.

[0099] The feed source 15 is also used to excite the connection point H to the feed point A, and the connection element 17 to form a second zero-order resonant mode supporting the fourth frequency band.

[0100] Please see Figure 9 The current distribution of the second zero-order resonant mode is formed by the branches between the second open end E2 and the connection point H, the connecting element 17, and the branches between the feed point A and the first open end E1, forming a U-shaped current.

[0101] The equivalent electrical length of the current path in the second zero-order resonant mode is or close to half the wavelength of the fourth frequency band. The equivalent electrical length of the current path in the second zero-order resonant mode includes the electrical length between the second opening end E2 and the connection point H, the equivalent electrical length of the connecting element 17, and the electrical length between the feed point A and the first opening end E1, which is or close to half the wavelength of the fourth frequency band.

[0102] This application does not specifically limit the size of the fourth frequency band. Optionally, the fourth frequency band may include, but is not limited to, at least one of the following: LB band (less than 1 GHz), MHB band (1-3 GHz), UHB band (greater than 3 GHz), Wi-Fi band, GPS band, etc. For example, the first frequency band may be the LB band, the second frequency band may be the MHB band, the third frequency band may be the N78 band, and the fourth frequency band may be the N79 band or the Wi-Fi 5G band. As another example, the first frequency band may be the GPS-L1 band, the second frequency band may be the Wi-Fi 2.4G band, the third frequency band may be the N78 band, and the fourth frequency band may be the N79 band or the Wi-Fi 5G band.

[0103] The specific structure of connecting element 17 will be illustrated below with reference to the accompanying drawings.

[0104] In the first alternative implementation, please refer to Figure 10The connecting element 17 includes a first connector 171, a second connector 172, and a second capacitive element 173. One end of the first connector 171 is connected to the connection point H, and the other end of the first connector 171 is electrically connected to one end of the second capacitive element 173. One end of the second connector 172 is connected to the feed point A. The other end of the second connector 172 is connected to the other end of the second capacitive element 173.

[0105] Optionally, the first connector 171 may include, but is not limited to, at least one of an electrical connection wire, a metal segment, or a conductive spring. In this application, the first connector 171 is exemplified by 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.

[0106] Optionally, the second connector 172 may include, but is not limited to, at least one of an electrical connection wire, a metal segment, or 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.

[0107] Optionally, the second capacitive element 173 includes a fourth capacitor element or a coupling capacitor gap. Optionally, when the second capacitive element 173 is a capacitor element, one end of the capacitor element is electrically connected to the second connector 172, and the other end of the capacitor element is electrically connected to the first connector 171. When the second capacitive element 173 is a coupling capacitor gap, a small coupling gap is formed between the first connector 171 and the second connector 172 to form the second capacitive element 173.

[0108] In the second alternative implementation, please refer to Figure 10 The connecting element 17 includes a first connector 171 and a second capacitive element 173. One end of the first connector 171 is connected to the connection point H, and the other end of the first connector 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 feed point A.

[0109] Optionally, the first connector 171 may include, but is not limited to, at least one of an electrical connection wire, a metal segment, or a conductive spring. In this application, the first connector 171 is taken as a metal segment that is integrally interconnected with the second radiator 12. The first connector 171 and the second radiator 12 may be formed on the same metal plate by CNC milling or similar methods.

[0110] Optionally, the second capacitive element 173 includes a capacitor element or a coupling capacitor gap. When the second capacitive element 173 is a capacitor element, one end of the capacitor element is electrically connected to the first connector 171, and the other end of the capacitor element is electrically connected to the feed point A. The capacitance value of the second capacitive element 173 is less than or equal to 0.5pF, and the second capacitive element 173 has virtually no effect on frequency bands lower than the fourth frequency band (the first frequency band, the second frequency band, and the third frequency band).

[0111] When the second capacitive element 173 is a coupling capacitor gap, a small coupling gap is formed between the first connector 171 and the feed point A to form the second capacitive element 173.

[0112] Optionally, the center frequency of the fourth frequency band is greater than the center frequency of the third frequency band.

[0113] In this embodiment, the stub between connection point H and feed point A, along with connecting element 17, forms a second open-loop structure. Since the stub between connection point H and feed point A needs to be compatible with supporting the first zero-order mode in the third frequency band, a second capacitive element 173 is designed in this embodiment. This shortens the physical length of the stub between connection point H and feed point A, allowing the second open-loop structure formed by the stub and second capacitive element 173 to support higher frequency bands, such as the fourth frequency band. In other words, the second capacitive element 173 enables the stub between connection point H and feed point A, along with connecting element 17, to form a second zero-order resonant mode that supports higher frequency bands.

[0114] Specifically, the sum of the electrical length between the second opening end E2 and the connection point H, the equivalent electrical length of the first connector 171, and the equivalent electrical length of the second capacitive element 173 is or close to half the wavelength of the fourth frequency band, so as to facilitate the formation of a second zero-order resonant mode supporting the fourth frequency band by the stubs between the connection point H and the feed point A and the connector 17.

[0115] In the third alternative implementation, please refer to Figure 10 The connecting element 17 includes a second connector 172 and a second capacitive element 173. One end of the second connector 172 is connected to the feed point A, and the other end of the second connector 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.

[0116] Optionally, the second connector 172 may include, but is not limited to, at least one of an electrical connection wire, a metal segment, or a conductive spring. In this application, the second connector 172 is taken as a metal segment that is integrally interconnected with the first radiator 11. The second connector 172 and the first radiator 11 may be formed on the same metal plate by CNC milling or similar methods.

[0117] Optionally, the second capacitive element 173 includes a capacitor element or a coupling capacitor gap. When the second capacitive element 173 is a capacitor element, one end of the capacitor element is electrically connected to the second connector 172, and the other end of the capacitor element is electrically connected to the connection point H. When the second capacitive element 173 is a coupling capacitor gap, a small coupling gap is formed between the second connector 172 and the connection point H to form the second capacitive element 173.

[0118] Optionally, the center frequency of the fourth frequency band is greater than the center frequency of the third frequency band.

[0119] In this embodiment, the stub between connection point H and feed point A, along with connecting element 17, forms a second open-loop structure. Since the stub between connection point H and feed point A needs to be compatible with supporting the first zero-order mode in the third frequency band, a second capacitive element 173 is designed in this embodiment. This shortens the physical length of the stub between connection point H and feed point A, allowing the second open-loop structure formed by the stub and second capacitive element 173 to support higher frequency bands, such as the fourth frequency band. In other words, the second capacitive element 173 enables the stub between connection point H and feed point A, along with connecting element 17, to form a second zero-order resonant mode that supports higher frequency bands.

[0120] Specifically, the sum of the electrical length between the second opening end E2 and the connection point H, the equivalent electrical length of the second connector 172, and the equivalent electrical length of the second capacitive element 173 is or close to half the wavelength of the fourth frequency band, so as to facilitate the formation of a second zero-order resonant mode supporting the fourth frequency band by the stubs between the connection point H and the feed point A and the connector 17.

[0121] Please see Figure 11 The following description, in conjunction with the accompanying drawings, illustrates the specific structure of an antenna assembly 100 and an electronic device 1000 having the antenna assembly 100 provided in Embodiment 2.

[0122] Please see 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 15.

[0123] The first radiator 11 is spaced apart along the first floor edge 510 of the reference floor 500. The first radiator 11 includes a first grounding point D1, a feed point A, and a first open end E1.

[0124] The second radiator 12 is spaced along the first floor edge 510 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.

[0125] 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.

[0126] Furthermore, 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, which is conducive to forming an open-loop structure of the third frequency band.

[0127] The first resonant circuit 13 is short-circuited in the third frequency band, indicating that the first resonant circuit 13 has reached the series resonance state at this time. This is manifested as follows: the inductive reactance XL and the capacitive reactance XC are equal in magnitude and opposite in phase, thus canceling each other out; the total impedance is close to zero (the theoretical value is pure resistance, but in reality it is affected by component losses); the current reaches its maximum value, and the signal passes through without obstruction.

[0128] 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.

[0129] This application does not impose specific limitations on the structure of the first resonant circuit 13.

[0130] For example, please see Figure 11 The first resonant circuit 13 includes a first capacitor C1 and a first inductor L1.

[0131] One end of the first inductor L1 is electrically connected to the connection point H, and the other end of the first inductor L1 is electrically connected to one end of the first capacitor C1, the other end of the first capacitor C1 being grounded. The first capacitor C1 and the first inductor L1 are capacitive with respect to the first frequency band.

[0132] 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: (1) In formula (1), L is the inductance of the first inductor L1, and C is the capacitance of the first capacitor C1. 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.

[0133] Optionally, the first inductor L1 is a small inductor with an inductance value of 2~6nH. For example, the inductance value of the first inductor L1 can be 2nH, 2.1nH, 2.2nH, 2.3nH, 2.4nH, 2.5nH, 2.6nH, 2.7nH, 2.8nH, 2.9nH, 3nH, 3.1nH, 3.2nH, 3.3nH, 3.4nH, 3.5nH, 3.6nH, 3.7nH, 3.8nH, 3.9nH, or 4nH. The inductance value is any one or any two of the following values: 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.

[0134] The matching circuit 14 also 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 the end of the first capacitive element 141 away from the feed point A, and the first matching branch 142 is short-circuited for the third frequency band.

[0135] The first matching branch 142 includes, but is not limited to, a series LC resonant circuit consisting of a fifth capacitor and a fourth inductor. The resonant frequency of the first matching branch 142 is the center frequency of the third frequency band, thus short-circuiting the third frequency band. The capacitance value of the fifth capacitor and the inductance value of the fourth inductor can be obtained according to the aforementioned formula (1).

[0136] The capacitance of the fifth capacitor is 0~2pF. The inductance of the fourth inductor is 2~6nH.

[0137] This application does not specifically limit the size of the third frequency band. Optionally, the third frequency band may include, but is not limited to, at least one of the following: LB band (less than 1 GHz), MHB band (1-3 GHz), UHB band (greater than 3 GHz), Wi-Fi band, GPS band, etc. For example, the first frequency band may be the LB band, the second frequency band may be the MHB band, and the third frequency band may be the UHB band. As another example, the first frequency band may be the GPS-L1 band, the second frequency band may be the Wi-Fi 2.4 GHz band, and the third frequency band may be the UHB band.

[0138] Furthermore, the first capacitive element 141 and the first matching branch 142 can also serve as part of the matching circuit 14 when the feed 15 is in operation.

[0139] For the third frequency band, the first resonant circuit 13, the stub from connection point H to feed point A, the first matching branch 142, and the portion between the second ground point J2 and the third ground point J3 of the first ground edge 510 form a first open-loop structure. The opening of the first open-loop structure is the first coupling gap G1.

[0140] The feed 15 is also used to provide an excitation signal for the third frequency band.

[0141] The feed source 15 is also used to excite the first resonant circuit 13, the connection point H to the feed point A, the first matching branch 142 and the first ground edge 510 to form a first zero-order resonant mode supporting the third frequency band.

[0142] The current distribution of the first zero-order resonant mode is formed by the stubs between the second open end E2 and the connection point H, the first resonant circuit 13, the second ground point J2 to the third ground point J3 of the first ground edge 510, the first matching branch 142 and the stubs between the feed point A and the first open end E1, forming a U-shaped current.

[0143] The equivalent electrical length of the current path in the first zero-order resonant mode is or close to half the wavelength of the third frequency band. The equivalent electrical length of the current path in 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 ground point J2 and the third ground point J3 of the first ground edge 510, the equivalent electrical length of the first matching branch 142, and the sum of the electrical length from the feed point A to the first open end E1, which is or close to half the wavelength of the third frequency band.

[0144] Please see Figure 11 The antenna assembly 100 also includes a connecting element 17.

[0145] The 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.

[0146] One end of the connecting element 17 is electrically connected to the connection point H, and the other end of the connecting element 17 is electrically connected to the power supply point A.

[0147] The feed source 15 is used to provide the excitation signal for the fourth frequency band.

[0148] The feed source 15 is also used to excite the connection point H to the feed point A, and the connection element 17 to form a second zero-order resonant mode supporting the fourth frequency band.

[0149] The current distribution of the second zero-order resonant mode is formed by the stubs between the second open end E2 and the connection point H, the connection element 17, and the stubs between the feed point A and the first open end E1, creating a U-shaped current.

[0150] The equivalent electrical length of the current path in the second zero-order resonant mode is or close to half the wavelength of the fourth frequency band. The equivalent electrical length of the current path in the second zero-order resonant mode includes the electrical length between the second opening end E2 and the connection point H, the equivalent electrical length of the connecting element 17, and the electrical length between the feed point A and the first opening end E1, which is or close to half the wavelength of the fourth frequency band.

[0151] This application does not specifically limit the size of the fourth frequency band. Optionally, the fourth frequency band may include, but is not limited to, at least one of the following: LB band (less than 1 GHz), MHB band (1-3 GHz), UHB band (greater than 3 GHz), Wi-Fi band, GPS band, etc. For example, the first frequency band may be the LB band, the second frequency band may be the MHB band, the third frequency band may be the N78 band, and the fourth frequency band may be the N79 band or the Wi-Fi 5G band. As another example, the first frequency band may be the GPS-L1 band, the second frequency band may be the Wi-Fi 2.4G band, the third frequency band may be the N78 band, and the fourth frequency band may be the N79 band or the Wi-Fi 5G band.

[0152] The specific structure of connecting element 17 will be illustrated below with reference to the accompanying drawings.

[0153] In a first optional embodiment, the connecting element 17 includes a first connector 171 and a second capacitive element 173. One end of the first connector 171 is connected to the connection point H, and the other end of the first connector 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 feed point A.

[0154] Optionally, the first connector 171 may include, but is not limited to, at least one of an electrical connection wire, a metal segment, or a conductive spring. In this application, the first connector 171 is taken as a metal segment that is integrally interconnected with the second radiator 12. The first connector 171 and the second radiator 12 may be formed on the same metal plate by CNC milling or similar methods.

[0155] Optionally, the second capacitive element 173 includes a capacitor element or a coupling capacitor gap. When the second capacitive element 173 is a capacitor element, one end of the capacitor element is electrically connected to the first connector 171, and the other end of the capacitor element is electrically connected to the feed point A. When the second capacitive element 173 is a coupling capacitor gap, a small coupling gap is formed between the first connector 171 and the feed point A to form the second capacitive element 173.

[0156] Optionally, the center frequency of the fourth frequency band is greater than the center frequency of the third frequency band.

[0157] In this embodiment, the stub between connection point H and feed point A, along with connecting element 17, forms a second open-loop structure. Since the stub between connection point H and feed point A needs to be compatible with supporting the first zero-order mode in the third frequency band, a second capacitive element 173 is designed in this embodiment. This shortens the physical length of the stub between connection point H and feed point A, allowing the second open-loop structure formed by the stub and second capacitive element 173 to support higher frequency bands, such as the fourth frequency band. In other words, the second capacitive element 173 enables the stub between connection point H and feed point A, along with connecting element 17, to form a second zero-order resonant mode that supports higher frequency bands.

[0158] Specifically, the sum of the electrical length between the second opening end E2 and the connection point H, the equivalent electrical length of the first connector 171, and the equivalent electrical length of the second capacitive element 173 is or close to half the wavelength of the fourth frequency band, so as to facilitate the formation of a second zero-order resonant mode supporting the fourth frequency band by the stubs between the connection point H and the feed point A and the connector 17.

[0159] In a second alternative embodiment, the connecting element 17 includes a second connector 172 and a second capacitive element 173. One end of the second connector 172 is connected to the feed point A, and the other end of the second connector 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.

[0160] In the third alternative implementation, please refer to Figure 11 The connecting element 17 includes a first connector 171, a second connector 172, and a second capacitive element 173. One end of the first connector 171 is connected to the connection point H, and the other end of the first connector 171 is electrically connected to one end of the second capacitive element 173. One end of the second connector 172 is connected to the feed point A. The other end of the second connector 172 is connected to the other end of the second capacitive element 173.

[0161] 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.

[0162] This application does not specifically limit the size of the first frequency band. Optionally, the first frequency band may include, but is not limited to, at least one of the following: LB band (less than 1 GHz), MHB band (1-3 GHz), UHB band (greater than 3 GHz), Wi-Fi band, GPS band, etc. For example, the first frequency band may include the GPS-L1 band.

[0163] The first resonant circuit 13 is capacitive for the first frequency band. Optionally, the first resonant circuit 13 includes at least a first capacitor C1. The first capacitor C1 is capacitive for the first frequency band.

[0164] This indicates that the maximum frequency of the first frequency band is less than the resonant frequency of the first resonant circuit 13. The first resonant circuit 13 is capacitive in the first frequency band, which means that the total impedance of the first resonant circuit 13 is dominated by the capacitive reactance of the capacitor (i.e., |XC|>|XL|), which is manifested as: the current phase leads the voltage phase (capacitive impedance characteristic). At this time, the first resonant circuit 13 is equivalent to a capacitor element.

[0165] In the antenna assembly 100 described above, the stub between the second grounding 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, the first resonant circuit 13 is equivalent to a series capacitor of the left-handed transmission line structure for the first frequency band, and the stub between the second grounding point D2 and the connection point H is equivalent to a parallel inductor of the left-handed transmission line structure for the first frequency band. Therefore, the stub between the second grounding point D2 and the connection point H, and the first resonant circuit 13 form a first left-handed antenna 10 supporting the first frequency band.

[0166] The first floor edge 510 includes a first floor point J1 and a second floor point J2. The first floor point J1 is the position where the second ground point D2 is electrically connected to the reference floor 500. The second floor point J2 is the position where the first resonant circuit 13 is electrically connected to the reference floor 500.

[0167] The feed source 15 is used to excite the stubs from the connection point H to 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, the current is distributed between the stubs between the second ground point D2 and the connection point H, the first resonant circuit 13, and between the first ground point J1 and the second ground point J2 of the first ground edge 510, forming a relatively uniform ring current.

[0168] The electrical length of the second radiator 12 is less than 1 / 4 wavelength of the first frequency band. Further, the electrical length of the second radiator 12 is greater than or equal to 1 / 8 wavelength of the first frequency band. Here, wavelength refers to the dielectric wavelength.

[0169] Please see 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 or a combination 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.

[0170] In the antenna assembly 100 described above, the stub 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 a series capacitor in the left-handed transmission line structure, and the stub between the first ground point D1 and the feed point A is equivalent to a parallel inductor in the left-handed transmission line structure for the second frequency band. Therefore, the stub between the first ground point D1 and the feed point A, and the first capacitive element 141 form a second left-handed antenna 20 supporting the second frequency band.

[0171] Please see Figure 11 The first floor edge 510 also includes a third floor point J3 and a fourth floor point J4. The third floor point J3 is the location where the feed 15 is electrically connected to the reference floor 500. The fourth floor point J4 is the location where the first grounding point D1 is electrically connected to the reference floor 500.

[0172] The feed 15 is also used to provide an excitation signal for the second frequency band.

[0173] The feed 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 between the stub between the first ground point D1 and the feed point A, the first capacitive element 141, and between the third ground point J3 and the fourth ground edge of the first ground edge 510, forming a relatively uniform ring current.

[0174] This application does not specify the size of the second frequency band. Optionally, the second frequency band may include, but is not limited to, at least one of the following: LB band (less than 1 GHz), MHB band (1-3 GHz), UHB band (greater than 3 GHz), Wi-Fi band, GPS band, etc.

[0175] 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. As another example, the first frequency band is the GPS-L1 band, and the second frequency band is the Wi-Fi 2.4G band.

[0176] The electrical length of the first radiator 11 is less than one-quarter of the wavelength of the second frequency band. Further, the electrical length of the first radiator 11 is greater than or equal to one-eighth of the wavelength of the second frequency band. Here, wavelength refers to the wavelength of the medium.

[0177] This application designs the structure of the antenna assembly 100, particularly the matching circuit 14, which includes a first capacitive element 141 and a first resonant circuit 13 that exhibits capacitive reactance for the first frequency band, thereby forming a first left-handed antenna 10 supporting the first frequency band and a second left-handed antenna 20 supporting the second frequency band. The magnitudes of the first and second frequency bands are different, and the current distribution positions of the first and second frequency bands are also different, thereby improving the isolation between the first and second frequency bands.

[0178] Please see 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 referred to the second resonant circuit 16 in Embodiment 1.

[0179] 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.

[0180] The electronic device 1000 provided in this application embodiment includes an antenna assembly 100 and a reference ground plane 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 15, and a connecting element 17. First radiators 11 are spaced apart along the first floor edge 510 of the reference floor 500. Each first radiator 11 includes a first grounding point D1, a feed point A, and a first open end E1. Second radiators 12 are spaced apart along the first floor edge 510 of the reference floor 500. Each 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 further includes a first matching branch 142, one end of which is grounded. The first matching branch 142 is short-circuited for the third frequency band. Source 15 is electrically connected to feed point A; connecting element 17 is located in the gap between the first radiator 11 and the first ground edge 510 of the reference ground 500, one end of connecting element 17 is electrically connected to the connection point H, and the other end of connecting element 17 is electrically connected to feed point A; feed source 15 is also used to excite the connection point H to feed point A, the first resonant circuit 13, the first ground edge 510 and the first matching branch 142 to form a first zero-order resonant mode supporting the third frequency band; feed source 15 is also used to excite the connection point H to feed point A and connecting element 17 to form a second zero-order resonant mode supporting the fourth frequency band; thus, compared to each antenna assembly supporting one frequency band, antenna assembly 100 can support the third and fourth frequency bands, thereby supporting more frequency bands while being miniaturized.

[0181] The following description, in conjunction with the accompanying drawings, illustrates the specific structure of an antenna assembly 100 and an electronic device 1000 having the antenna assembly 100 provided in Embodiment 3.

[0182] Please see 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 15.

[0183] Please see Figure 12 The first radiator 11 is spaced apart along the first floor edge 510 of the reference floor 500. The first radiator 11 includes a first grounding point D1, a feed point A, and a first open end E1.

[0184] Please see Figure 12The second radiator 12 is spaced apart along the first floor edge 510 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.

[0185] Please see 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 which is grounded. The first matching branch 142 is short-circuited for the third frequency band.

[0186] Please see 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.

[0187] Please see 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 or a combination 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.

[0188] In the antenna assembly 100 described above, the stub 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 a series capacitor in the left-handed transmission line structure, and the stub between the first ground point D1 and the feed point A is equivalent to a parallel inductor in the left-handed transmission line structure for the second frequency band. Therefore, the stub between the first ground point D1 and the feed point A, and the first capacitive element 141 form a second left-handed antenna 20 supporting the second frequency band.

[0189] The first floor edge 510 also includes a third floor point J3 and a fourth floor point J4. The third floor point J3 is the location where the feed 15 is electrically connected to the reference floor 500. The fourth floor point J4 is the location where the first grounding point D1 is electrically connected to the reference floor 500.

[0190] The feed 15 is also used to provide an excitation signal for the second frequency band.

[0191] The feed 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 between the stub between the first ground point D1 and the feed point A, the first capacitive element 141, and between the third ground point J3 and the fourth ground edge of the first ground edge 510, forming a relatively uniform ring current.

[0192] This application does not specify the size of the second frequency band. Optionally, the second frequency band may include, but is not limited to, at least one of the following: LB band (less than 1 GHz), MHB band (1-3 GHz), UHB band (greater than 3 GHz), Wi-Fi band, GPS band, etc.

[0193] 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. As another example, the first frequency band is the GPS-L1 band, and the second frequency band is the Wi-Fi 2.4G band.

[0194] The electrical length of the first radiator 11 is less than one-quarter of the wavelength of the second frequency band. Further, the electrical length of the first radiator 11 is greater than or equal to one-eighth of the wavelength of the second frequency band. Here, wavelength refers to the wavelength of the medium.

[0195] This application designs the structure of the antenna assembly 100, particularly the matching circuit 14, which includes a first capacitive element 141 and a first resonant circuit 13 that exhibits capacitive reactance for the first frequency band, thereby forming a first left-handed antenna 10 supporting the first frequency band and a second left-handed antenna 20 supporting the second frequency band. The magnitudes of the first and second frequency bands are different, and the current distribution positions of the first and second frequency bands are also different, thereby improving the isolation between the first and second frequency bands.

[0196] Please see 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, which is conducive to forming an open-loop structure of the third frequency band.

[0197] The first resonant circuit 13 is short-circuited in the third frequency band, indicating that the first resonant circuit 13 has reached the series resonance state at this time. This is manifested as follows: the inductive reactance XL and the capacitive reactance XC are equal in magnitude and opposite in phase, thus canceling each other out; the total impedance is close to zero (the theoretical value is pure resistance, but in reality it is affected by component losses); the current reaches its maximum value, and the signal passes through without obstruction.

[0198] 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.

[0199] This application does not impose specific limitations on the structure of the first resonant circuit 13.

[0200] For example, please see Figure 12 The first resonant circuit 13 includes a first capacitor C1 and a first inductor L1.

[0201] One end of the first inductor L1 is electrically connected to the connection point H, and the other end of the first inductor L1 is electrically connected to one end of the first capacitor C1, the other end of the first capacitor C1 being grounded. The first capacitor C1 and the first inductor L1 are capacitive with respect to the first frequency band.

[0202] 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: (1) In formula (1), L is the inductance of the first inductor L1, and C is the capacitance of the first capacitor C1. 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.

[0203] Optionally, the first inductor L1 is a small inductor with an inductance value of 2~6nH. For example, the inductance value of the first inductor L1 can be 2nH, 2.1nH, 2.2nH, 2.3nH, 2.4nH, 2.5nH, 2.6nH, 2.7nH, 2.8nH, 2.9nH, 3nH, 3.1nH, 3.2nH, 3.3nH, 3.4nH, 3.5nH, 3.6nH, 3.7nH, 3.8nH, 3.9nH, or 4nH. The inductance value is any one or any two of the following values: 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.

[0204] The matching circuit 14 also 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 the end of the first capacitive element 141 away from the feed point A, and the first matching branch 142 is short-circuited for the third frequency band.

[0205] The first matching branch 142 includes, but is not limited to, a series LC resonant circuit consisting of a fifth capacitor and a fourth inductor. The resonant frequency of the first matching branch 142 is the center frequency of the third frequency band, thus short-circuiting the third frequency band. The capacitance value of the fifth capacitor and the inductance value of the fourth inductor can be obtained according to the aforementioned formula (1).

[0206] The capacitance of the fifth capacitor is 0~2pF. The inductance of the fourth inductor is 2~6nH.

[0207] This application does not specifically limit the size of the third frequency band. Optionally, the third frequency band may include, but is not limited to, at least one of the following: LB band (less than 1 GHz), MHB band (1-3 GHz), UHB band (greater than 3 GHz), Wi-Fi band, GPS band, etc. For example, the first frequency band may be the LB band, the second frequency band may be the MHB band, and the third frequency band may be the UHB band. As another example, the first frequency band may be the GPS-L1 band, the second frequency band may be the Wi-Fi 2.4 GHz band, and the third frequency band may be the UHB band.

[0208] Furthermore, the first capacitive element 141 and the first matching branch 142 can also serve as part of the matching circuit 14 when the feed 15 is in operation.

[0209] For the third frequency band, the first resonant circuit 13, the stub from connection point H to feed point A, the first matching branch 142, and the portion between the second ground point J2 and the third ground point J3 of the first ground edge 510 form a first open-loop structure. The opening of the first open-loop structure is the first coupling gap G1.

[0210] The feed 15 is also used to provide an excitation signal for the third frequency band.

[0211] The feed source 15 is also used to excite the first resonant circuit 13, the connection point H to the feed point A, the first matching branch 142 and the first ground edge 510 to form a first zero-order resonant mode supporting the third frequency band.

[0212] The current distribution of the first zero-order resonant mode is formed by the stubs between the second open end E2 and the connection point H, the first resonant circuit 13, the second ground point J2 to the third ground point J3 of the first ground edge 510, the first matching branch 142 and the stubs between the feed point A and the first open end E1, forming a U-shaped current.

[0213] The equivalent electrical length of the current path in the first zero-order resonant mode is or close to half the wavelength of the third frequency band. The equivalent electrical length of the current path in 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 ground point J2 and the third ground point J3 of the first ground edge 510, the equivalent electrical length of the first matching branch 142, and the sum of the electrical length from the feed point A to the first open end E1, which is or close to half the wavelength of the third frequency band.

[0214] Please see 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 capacitor C1. The first capacitor C1 is capacitive for the first frequency band.

[0215] This indicates that the maximum frequency of the first frequency band is less than the resonant frequency of the first resonant circuit 13. The first resonant circuit 13 is capacitive in the first frequency band, which means that the total impedance of the first resonant circuit 13 is dominated by the capacitive reactance of the capacitor (i.e., |XC|>|XL|), which is manifested as: the current phase leads the voltage phase (capacitive impedance characteristic). At this time, the first resonant circuit 13 is equivalent to a capacitor element.

[0216] In the antenna assembly 100 described above, the stub between the second grounding 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, the first resonant circuit 13 is equivalent to a series capacitor of the left-handed transmission line structure for the first frequency band, and the stub between the second grounding point D2 and the connection point H is equivalent to a parallel inductor of the left-handed transmission line structure for the first frequency band. Therefore, the stub between the second grounding point D2 and the connection point H, and the first resonant circuit 13 form a first left-handed antenna 10 supporting the first frequency band.

[0217] Please see 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 the position where the second ground point D2 is electrically connected to the reference floor 500. The second floor point J2 is the position where the first resonant circuit 13 is electrically connected to the reference floor 500.

[0218] The feed source 15 is used to excite the stubs from the connection point H to 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, the current is distributed between the stubs between the second ground point D2 and the connection point H, the first resonant circuit 13, and between the first ground point J1 and the second ground point J2 of the first ground edge 510, forming a relatively uniform ring current.

[0219] The electrical length of the second radiator 12 is less than 1 / 4 wavelength of the first frequency band. Further, the electrical length of the second radiator 12 is greater than or equal to 1 / 8 wavelength of the first frequency band. Here, wavelength refers to the dielectric wavelength.

[0220] Please see Figure 11 The antenna assembly 100 also includes a connecting element 17.

[0221] The 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.

[0222] One end of the connecting element 17 is electrically connected to the connection point H, and the other end of the connecting element 17 is electrically connected to the power supply point A.

[0223] The feed source 15 is used to provide the excitation signal for the fourth frequency band.

[0224] The feed source 15 is also used to excite the connection point H to the feed point A, and the connection element 17 to form a second zero-order resonant mode supporting the fourth frequency band.

[0225] The current distribution of the second zero-order resonant mode is formed by the stubs between the second open end E2 and the connection point H, the connection element 17, and the stubs between the feed point A and the first open end E1, creating a U-shaped current.

[0226] The equivalent electrical length of the current path in the second zero-order resonant mode is or close to half the wavelength of the fourth frequency band. The equivalent electrical length of the current path in the second zero-order resonant mode includes the electrical length between the second opening end E2 and the connection point H, the equivalent electrical length of the connecting element 17, and the electrical length between the feed point A and the first opening end E1, which is or close to half the wavelength of the fourth frequency band.

[0227] This application does not specifically limit the size of the fourth frequency band. Optionally, the fourth frequency band may include, but is not limited to, at least one of the following: LB band (less than 1 GHz), MHB band (1-3 GHz), UHB band (greater than 3 GHz), Wi-Fi band, GPS band, etc. For example, the first frequency band may be the LB band, the second frequency band may be the MHB band, the third frequency band may be the N78 band, and the fourth frequency band may be the N79 band or the Wi-Fi 5G band. As another example, the first frequency band may be the GPS-L1 band, the second frequency band may be the Wi-Fi 2.4G band, the third frequency band may be the N78 band, and the fourth frequency band may be the N79 band or the Wi-Fi 5G band.

[0228] The specific structure of connecting element 17 will be illustrated below with reference to the accompanying drawings.

[0229] In a first optional embodiment, the connecting element 17 includes a first connector 171 and a second capacitive element 173. One end of the first connector 171 is connected to the connection point H, and the other end of the first connector 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 feed point A.

[0230] Optionally, the first connector 171 may include, but is not limited to, at least one of an electrical connection wire, a metal segment, or a conductive spring. In this application, the first connector 171 is taken as a metal segment that is integrally interconnected with the second radiator 12. The first connector 171 and the second radiator 12 may be formed on the same metal plate by CNC milling or similar methods.

[0231] Optionally, the second capacitive element 173 includes a capacitor element or a coupling capacitor gap. When the second capacitive element 173 is a capacitor element, one end of the capacitor element is electrically connected to the first connector 171, and the other end of the capacitor element is electrically connected to the feed point A. When the second capacitive element 173 is a coupling capacitor gap, a small coupling gap is formed between the first connector 171 and the feed point A to form the second capacitive element 173.

[0232] Optionally, the center frequency of the fourth frequency band is greater than the center frequency of the third frequency band.

[0233] In this embodiment, the stub between connection point H and feed point A, along with connecting element 17, forms a second open-loop structure. Since the stub between connection point H and feed point A needs to be compatible with supporting the first zero-order mode in the third frequency band, a second capacitive element 173 is designed in this embodiment. This shortens the physical length of the stub between connection point H and feed point A, allowing the second open-loop structure formed by the stub and second capacitive element 173 to support higher frequency bands, such as the fourth frequency band. In other words, the second capacitive element 173 enables the stub between connection point H and feed point A, along with connecting element 17, to form a second zero-order resonant mode that supports higher frequency bands.

[0234] Specifically, the sum of the electrical length between the second opening end E2 and the connection point H, the equivalent electrical length of the first connector 171, and the equivalent electrical length of the second capacitive element 173 is or close to half the wavelength of the fourth frequency band, so as to facilitate the formation of a second zero-order resonant mode supporting the fourth frequency band by the stubs between the connection point H and the feed point A and the connector 17.

[0235] In a second alternative embodiment, the connecting element 17 includes a second connector 172 and a second capacitive element 173. One end of the second connector 172 is connected to the feed point A, and the other end of the second connector 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.

[0236] In a third optional embodiment, the connecting element 17 includes a first connector 171, a second connector 172, and a second capacitive element 173. One end of the first connector 171 is connected to the connection point H, and the other end of the first connector 171 is electrically connected to one end of the second capacitive element 173. One end of the second connector 172 is connected to the feed point A. The other end of the second connector 172 is connected to the other end of the second capacitive element 173.

[0237] Please see 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 referred to the second resonant circuit 16 in Embodiment 1.

[0238] 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.

[0239] The electronic device 1000 provided in this application embodiment includes an antenna assembly 100 and a reference ground plane 500. The antenna assembly 100 includes a first radiator 11, a second radiator 12, a matching circuit 14, and a feed 15. The first radiator 11 is spaced along the first ground plane edge 510 of the reference ground plane 500 and includes a first ground point D1, a feed point A, and a first opening end E1. The second radiator 12 is spaced along the first ground plane edge 510 of the reference ground plane 500 and includes a second ground point D2, a connection point H, and a second opening end E2. The second opening end E2 is separated from the first opening end E1 by a... The first coupling gap G1; the matching circuit 14 includes a first capacitive element 141, one end of which is electrically connected to the feed point A; the matching circuit 14 also includes a first matching branch 142, one end of which is grounded, and the first matching branch 142 is short-circuited for the third frequency band; the feed source 15 is electrically connected to the other end of the first capacitive element 141; the feed source 15 is used to excite the connection point H to the second ground point D2 to form a second resonant mode supporting the second frequency band, and also to excite the connection point H to the feed point A, the first resonant circuit 13, the first ground edge 510, and the first matching branch 142 to form a first zero-order resonant mode supporting the third frequency band. Thus, compared to each antenna assembly supporting only one frequency band, the antenna assembly 100 can support both the second and third frequency bands, thereby supporting more frequency bands while being miniaturized.

[0240] The following description, in conjunction with the accompanying drawings, illustrates the specific structure of an antenna assembly 100 and an electronic device 1000 having the antenna assembly 100 provided in Embodiment 4.

[0241] Please see 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 15.

[0242] Please see Figure 13 The first radiator 11 is spaced apart along the first floor edge 510 of the reference floor 500. The first radiator 11 includes a first grounding point D1, a feed point A, and a first open end E1.

[0243] Please see Figure 13 The second radiator 12 is spaced apart along the first floor edge 510 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.

[0244] Please see Figure 13The 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 which is grounded. The first matching branch 142 is short-circuited for the third frequency band.

[0245] Please see 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.

[0246] Please see 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 capacitor C1. The first capacitor C1 is capacitive for the first frequency band.

[0247] This indicates that the maximum frequency of the first frequency band is less than the resonant frequency of the first resonant circuit 13. The first resonant circuit 13 is capacitive in the first frequency band, which means that the total impedance of the first resonant circuit 13 is dominated by the capacitive reactance of the capacitor (i.e., |XC|>|XL|), which is manifested as: the current phase leads the voltage phase (capacitive impedance characteristic). At this time, the first resonant circuit 13 is equivalent to a capacitor element.

[0248] In the antenna assembly 100 described above, the stub between the second grounding 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, the first resonant circuit 13 is equivalent to a series capacitor of the left-handed transmission line structure for the first frequency band, and the stub between the second grounding point D2 and the connection point H is equivalent to a parallel inductor of the left-handed transmission line structure for the first frequency band. Therefore, the stub between the second grounding point D2 and the connection point H, and the first resonant circuit 13 form a first left-handed antenna 10 supporting the first frequency band.

[0249] The first floor edge 510 includes a first floor point J1 and a second floor point J2. The first floor point J1 is the position where the second ground point D2 is electrically connected to the reference floor 500. The second floor point J2 is the position where the first resonant circuit 13 is electrically connected to the reference floor 500.

[0250] The feed source 15 is used to excite the stubs from the connection point H to 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, the current is distributed between the stubs between the second ground point D2 and the connection point H, the first resonant circuit 13, and between the first ground point J1 and the second ground point J2 of the first ground edge 510, forming a relatively uniform ring current.

[0251] The electrical length of the second radiator 12 is less than 1 / 4 wavelength of the first frequency band. Further, the electrical length of the second radiator 12 is greater than or equal to 1 / 8 wavelength of the first frequency band. Here, wavelength refers to the dielectric wavelength.

[0252] Furthermore, 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, which is conducive to forming an open-loop structure of the third frequency band.

[0253] The first resonant circuit 13 is short-circuited in the third frequency band, indicating that the first resonant circuit 13 has reached the series resonance state at this time. This is manifested as follows: the inductive reactance XL and the capacitive reactance XC are equal in magnitude and opposite in phase, thus canceling each other out; the total impedance is close to zero (the theoretical value is pure resistance, but in reality it is affected by component losses); the current reaches its maximum value, and the signal passes through without obstruction.

[0254] 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.

[0255] This application does not impose specific limitations on the structure of the first resonant circuit 13.

[0256] For example, please see Figure 13 The first resonant circuit 13 includes a first capacitor C1 and a first inductor L1.

[0257] One end of the first inductor L1 is electrically connected to the connection point H, and the other end of the first inductor L1 is electrically connected to one end of the first capacitor C1, the other end of the first capacitor C1 being grounded. The first capacitor C1 and the first inductor L1 are capacitive with respect to the first frequency band.

[0258] 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: (1) In formula (1), L is the inductance of the first inductor L1, and C is the capacitance of the first capacitor C1. 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.

[0259] Optionally, the first inductor L1 is a small inductor with an inductance value of 2~6nH. For example, the inductance value of the first inductor L1 can be 2nH, 2.1nH, 2.2nH, 2.3nH, 2.4nH, 2.5nH, 2.6nH, 2.7nH, 2.8nH, 2.9nH, 3nH, 3.1nH, 3.2nH, 3.3nH, 3.4nH, 3.5nH, 3.6nH, 3.7nH, 3.8nH, 3.9nH, or 4nH. The inductance value is any one or any two of the following values: 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.

[0260] The matching circuit 14 also 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 the end of the first capacitive element 141 away from the feed point A, and the first matching branch 142 is short-circuited for the third frequency band.

[0261] The first matching branch 142 includes, but is not limited to, a series LC resonant circuit consisting of a fifth capacitor and a fourth inductor. The resonant frequency of the first matching branch 142 is the center frequency of the third frequency band, thus short-circuiting the third frequency band. The capacitance value of the fifth capacitor and the inductance value of the fourth inductor can be obtained according to the aforementioned formula (1).

[0262] The capacitance of the fifth capacitor is 0~2pF. The inductance of the fourth inductor is 2~6nH.

[0263] This application does not specifically limit the size of the third frequency band. Optionally, the third frequency band may include, but is not limited to, at least one of the following: LB band (less than 1 GHz), MHB band (1-3 GHz), UHB band (greater than 3 GHz), Wi-Fi band, GPS band, etc. For example, the first frequency band may be the LB band, the second frequency band may be the MHB band, and the third frequency band may be the UHB band. As another example, the first frequency band may be the GPS-L1 band, the second frequency band may be the Wi-Fi 2.4 GHz band, and the third frequency band may be the UHB band.

[0264] Furthermore, the first capacitive element 141 and the first matching branch 142 can also serve as part of the matching circuit 14 when the feed 15 is in operation.

[0265] For the third frequency band, the first resonant circuit 13, the stub from connection point H to feed point A, the first matching branch 142, and the portion between the second ground point J2 and the third ground point J3 of the first ground edge 510 form a first open-loop structure. The opening of the first open-loop structure is the first coupling gap G1.

[0266] The feed 15 is also used to provide an excitation signal for the third frequency band.

[0267] The feed source 15 is also used to excite the first resonant circuit 13, the connection point H to the feed point A, the first matching branch 142 and the first ground edge 510 to form a first zero-order resonant mode supporting the third frequency band.

[0268] The current distribution of the first zero-order resonant mode is formed by the stubs between the second open end E2 and the connection point H, the first resonant circuit 13, the second ground point J2 to the third ground point J3 of the first ground edge 510, the first matching branch 142 and the stubs between the feed point A and the first open end E1, forming a U-shaped current.

[0269] The equivalent electrical length of the current path in the first zero-order resonant mode is or close to half the wavelength of the third frequency band. The equivalent electrical length of the current path in 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 ground point J2 and the third ground point J3 of the first ground edge 510, the equivalent electrical length of the first matching branch 142, and the sum of the electrical length from the feed point A to the first open end E1, which is or close to half the wavelength of the third frequency band.

[0270] Please see 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 referred to the second resonant circuit 16 in Embodiment 1.

[0271] 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.

[0272] The electronic device 1000 provided in this application embodiment includes an antenna assembly 100 and a reference ground plane 500. The antenna assembly 100 includes a first radiator 11, a second radiator 12, a matching circuit 14, and a feed 15. The first radiator 11 is spaced along the first ground plane edge 510 of the reference ground plane 500 and includes a first ground point D1, a feed point A, and a first opening end E1. The second radiator 12 is spaced along the first ground plane edge 510 of the reference ground plane 500 and includes a second ground point D2, a connection point H, and a second opening end E2. The second opening end E2 and the first opening end E1 are coupled together. The antenna assembly 100 includes a gap G1, a first resonant circuit 13, one end of which is electrically connected to the connection point H, and the other end of which is 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 which is grounded and short-circuited for the third frequency band. The feed 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. The feed 15 is also used to excite the connection point H to the feed point A, the first resonant circuit 13, the first ground edge 510, and the first matching branch 142 to form a first zero-order resonant mode supporting the third frequency band. Thus, compared to each antenna assembly supporting one frequency band, the antenna assembly 100 can support both the first and third frequency bands, thereby supporting more frequency bands while being miniaturized.

[0273] The following description, in conjunction with the accompanying drawings, illustrates the specific structure of an antenna assembly 100 and an electronic device 1000 having the antenna assembly 100 provided in Embodiment 5.

[0274] Please see 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 15.

[0275] Please see Figure 14 The first radiator 11 is spaced apart along the first floor edge 510 of the reference floor 500. The first radiator 11 includes a first grounding point D1, a feed point A, and a first open end E1.

[0276] Please see Figure 14 The second radiator 12 is spaced apart along the first floor edge 510 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.

[0277] 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.

[0278] Please see 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 capacitor C1. The first capacitor C1 is capacitive for the first frequency band.

[0279] This indicates that the maximum frequency of the first frequency band is less than the resonant frequency of the first resonant circuit 13. The first resonant circuit 13 is capacitive in the first frequency band, which means that the total impedance of the first resonant circuit 13 is dominated by the capacitive reactance of the capacitor (i.e., |XC|>|XL|), which is manifested as: the current phase leads the voltage phase (capacitive impedance characteristic). At this time, the first resonant circuit 13 is equivalent to a capacitor element.

[0280] In the antenna assembly 100 described above, the stub between the second grounding 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, the first resonant circuit 13 is equivalent to a series capacitor of the left-handed transmission line structure for the first frequency band, and the stub between the second grounding point D2 and the connection point H is equivalent to a parallel inductor of the left-handed transmission line structure for the first frequency band. Therefore, the stub between the second grounding point D2 and the connection point H, and the first resonant circuit 13 form a first left-handed antenna 10 supporting the first frequency band.

[0281] The first floor edge 510 includes a first floor point J1 and a second floor point J2. The first floor point J1 is the position where the second ground point D2 is electrically connected to the reference floor 500. The second floor point J2 is the position where the first resonant circuit 13 is electrically connected to the reference floor 500.

[0282] The feed source 15 is used to excite the stubs from the connection point H to 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, the current is distributed between the stubs between the second ground point D2 and the connection point H, the first resonant circuit 13, and between the first ground point J1 and the second ground point J2 of the first ground edge 510, forming a relatively uniform ring current.

[0283] The electrical length of the second radiator 12 is less than 1 / 4 wavelength of the first frequency band. Further, the electrical length of the second radiator 12 is greater than or equal to 1 / 8 wavelength of the first frequency band. Here, wavelength refers to the dielectric wavelength.

[0284] Please see Figure 14 The antenna assembly 100 also includes a connecting element 17.

[0285] The 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.

[0286] One end of the connecting element 17 is electrically connected to the connection point H, and the other end of the connecting element 17 is electrically connected to the power supply point A.

[0287] The feed source 15 is used to provide the excitation signal for the fourth frequency band.

[0288] The feed source 15 is also used to excite the connection point H to the feed point A, and the connection element 17 to form a second zero-order resonant mode supporting the fourth frequency band.

[0289] The current distribution of the second zero-order resonant mode is formed by the stubs between the second open end E2 and the connection point H, the connection element 17, and the stubs between the feed point A and the first open end E1, creating a U-shaped current.

[0290] The equivalent electrical length of the current path in the second zero-order resonant mode is or close to half the wavelength of the fourth frequency band. The equivalent electrical length of the current path in the second zero-order resonant mode includes the electrical length between the second opening end E2 and the connection point H, the equivalent electrical length of the connecting element 17, and the electrical length between the feed point A and the first opening end E1, which is or close to half the wavelength of the fourth frequency band.

[0291] This application does not specifically limit the size of the fourth frequency band. Optionally, the fourth frequency band may include, but is not limited to, at least one of the following: LB band (less than 1 GHz), MHB band (1-3 GHz), UHB band (greater than 3 GHz), Wi-Fi band, GPS band, etc. For example, the first frequency band may be the LB band, the second frequency band may be the MHB band, the third frequency band may be the N78 band, and the fourth frequency band may be the N79 band or the Wi-Fi 5G band. As another example, the first frequency band may be the GPS-L1 band, the second frequency band may be the Wi-Fi 2.4G band, the third frequency band may be the N78 band, and the fourth frequency band may be the N79 band or the Wi-Fi 5G band.

[0292] The specific structure of connecting element 17 will be illustrated below with reference to the accompanying drawings.

[0293] In a first optional embodiment, the connecting element 17 includes a first connector 171 and a second capacitive element 173. One end of the first connector 171 is connected to the connection point H, and the other end of the first connector 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 feed point A.

[0294] Optionally, the first connector 171 may include, but is not limited to, at least one of an electrical connection wire, a metal segment, or a conductive spring. In this application, the first connector 171 is taken as a metal segment that is integrally interconnected with the second radiator 12. The first connector 171 and the second radiator 12 may be formed on the same metal plate by CNC milling or similar methods.

[0295] Optionally, the second capacitive element 173 includes a capacitor element or a coupling capacitor gap. When the second capacitive element 173 is a capacitor element, one end of the capacitor element is electrically connected to the first connector 171, and the other end of the capacitor element is electrically connected to the feed point A. When the second capacitive element 173 is a coupling capacitor gap, a small coupling gap is formed between the first connector 171 and the feed point A to form the second capacitive element 173.

[0296] Optionally, the center frequency of the fourth frequency band is greater than the center frequency of the third frequency band.

[0297] In this embodiment, the stub between connection point H and feed point A, along with connecting element 17, forms a second open-loop structure. Since the stub between connection point H and feed point A needs to be compatible with supporting the first zero-order mode in the third frequency band, a second capacitive element 173 is designed in this embodiment. This shortens the physical length of the stub between connection point H and feed point A, allowing the second open-loop structure formed by the stub and second capacitive element 173 to support higher frequency bands, such as the fourth frequency band. In other words, the second capacitive element 173 enables the stub between connection point H and feed point A, along with connecting element 17, to form a second zero-order resonant mode that supports higher frequency bands.

[0298] Specifically, the sum of the electrical length between the second opening end E2 and the connection point H, the equivalent electrical length of the first connector 171, and the equivalent electrical length of the second capacitive element 173 is or close to half the wavelength of the fourth frequency band, so as to facilitate the formation of a second zero-order resonant mode supporting the fourth frequency band by the stubs between the connection point H and the feed point A and the connector 17.

[0299] In a second alternative embodiment, the connecting element 17 includes a second connector 172 and a second capacitive element 173. One end of the second connector 172 is connected to the feed point A, and the other end of the second connector 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.

[0300] In a third optional embodiment, the connecting element 17 includes a first connector 171, a second connector 172, and a second capacitive element 173. One end of the first connector 171 is connected to the connection point H, and the other end of the first connector 171 is electrically connected to one end of the second capacitive element 173. One end of the second connector 172 is connected to the feed point A. The other end of the second connector 172 is connected to the other end of the second capacitive element 173.

[0301] Please see 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 referred to the second resonant circuit 16 in Embodiment 1.

[0302] 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.

[0303] Optionally, taking a mobile phone as an example (electronic device 1000). Currently, a single antenna on the frame of a mobile phone generally needs to cover multiple cellular bands, Wi-Fi bands, or even GPS bands. The goal is to cover as many bands as possible within a small size, leaving more space and design freedom for other antenna layouts. Simultaneously, if a single feed point can achieve high performance across multiple bands to meet multi-standard requirements, no additional switching switch is needed, saving costs for the entire RF system. However, existing frame-mounted multi-band shared antenna technology struggles to simultaneously cover cellular 5G (N78, N79) and Wi-Fi bands (Wi-Fi 2.4G, Wi-Fi 5G), as well as the large bandwidth of GPS L1 ranging from 1.6GHz to 5.8GHz. Therefore, achieving multi-band broadband miniaturized design with a single antenna is of significant research value.

[0304] This application will use a single feed point to achieve a multi-band design of 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 available so as to allow for flexible switching between cellular and Wi-Fi.

[0305] Please see 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 set of port-to-port short-circuit stubs (i.e., the aforementioned first radiator 11 and second radiator 12), an antenna feed point (i.e., the aforementioned feed point A), and an antenna ground plane (e.g., the mobile phone's metal frame, i.e., the aforementioned reference ground plane 500). The antenna feed point A is directly fed onto one short-circuit stub (the aforementioned first radiator 11), while multiple sets of LC series-parallel resonant circuits (the aforementioned first resonant circuit 13 and second resonant circuit 16) are loaded onto another port-to-port parasitic stub (the aforementioned second radiator 12), and the feed line is also connected to the parasitic stub (the aforementioned second radiator 12) through an LC circuit (the aforementioned connecting element 17).

[0306] Among them, (1) the third inductor L3 (e.g., 9.1nH), the second capacitor C2 (e.g., 0.7pF), and the second inductor L2 (e.g., 15nH). The series circuit of the third inductor L3 and the second capacitor C2 is used to form an equivalent ground in the Wi-Fi 2.4G 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 band. (2) The first inductor L1 (e.g., 4.3nH) and the first capacitor C1 (e.g., 0.5pF) are used to form an equivalent ground in the N78 band. (3) The equivalent inductance L4 (e.g., 0.5nH) of the first connector and the second connector and the second capacitor 173 (e.g., 0.25pF) are used to form an equivalent capacitance in the N79+ Wi-Fi 5G band.

[0307] Please see 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 is electrically connected to the connection point H and the multi-channel LC matching circuit (the aforementioned first resonant circuit 13 and second resonant circuit 16), and the second conductive spring 177 is electrically connected between the feed point A and 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 a metal connecting wire), a second capacitive element 173, and a second metal segment 178 (or a metal connecting wire). The feed point A and the connection point H are connected in series by a metal connecting wire. The length of the first radiator 11 is approximately 6.5 mm, the distance from the feed point A to the first opening end E1 is approximately 2 mm, the length of the second radiator 12 is approximately 10 mm, the distance from the connection point H to the second opening end E2 is approximately 4 mm, and the width of the first coupling gap G1 is approximately 1 mm.

[0308] Please see Figure 17 , Figure 17 yes Figure 16The provided antenna assembly 100 is shown in the S-parameter curve of the mobile phone simulation model.

[0309] As can be seen, antenna assembly 100 has resonant points at 1.6GHz, 2.4GHz, 3.6GHz, 4.9GHz, and 5.7GHz (covering five frequency bands: GPS-L1, Wi-Fi 2.4G, N78, N79, and Wi-Fi 5G). This indicates that the antenna assembly 100 provided in this application can simultaneously cover these five frequency bands—GPS-L1, Wi-Fi 2.4G, N78, N79, and Wi-Fi 5G—with a relatively small stub size and without the need for switching.

[0310] Please see Figure 18 , Figure 18 yes Figure 16 The efficiency curves of the provided antenna assembly 100 in the mobile phone simulation model are shown. It can be seen that the efficiency of antenna assembly 100 at five frequency points—1.6GHz, 2.4GHz, 3.6GHz, 4.9GHz, and 5.7GHz—is approximately -4dB to -5dB, meeting the basic performance requirements for antennas in the GPS-L1 + Wi-Fi 2.4G + N78 + N79 + Wi-Fi 5G frequency bands.

[0311] Please see Figure 19 , Figure 19 yes Figure 16 A schematic diagram of the current distribution of the provided antenna assembly 100 operating in the GPS-L1 frequency band in a mobile phone simulation model.

[0312] For the GPS-L1 frequency band, the parallel circuit of the second inductor L2 and the second capacitor C2 at 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 L1 and the first capacitor C1 is used to form an equivalent ground in the N78 frequency band. The equivalent capacitance to ground in the GPS-L1 frequency band is used to form a left-handed mode for the parasitic stub (the second radiator 12). (The left-handed mode generally only requires the stub length to be much less than a quarter wavelength to generate resonance. The excitation condition requires the short-circuited stub (the aforementioned second radiator 12) to be connected to ground near the first opening end E1.)

[0313] As can be seen, the feed stub (first radiator 11) couples and excites the parasitic stub (the aforementioned second radiator 12), and the current is largest at the second grounding point D2 of the parasitic stub (the aforementioned second radiator 12). The current flows to ground through the equivalent capacitance of the connection point H (the first inductor L1 and the first capacitor C1), 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.

[0314] Please see Figure 20 , Figure 20 yes Figure 16 The provided antenna assembly 100 is shown in the current distribution diagram when operating in the Wi-Fi 2.4G frequency band in a mobile phone simulation model.

[0315] For the Wi-Fi 2.4G band, the series circuit formed by the second capacitor C2 and the third inductor L3 at connection point H is used to form an equivalent ground in the Wi-Fi 2.4G band. The parasitic stub (the aforementioned second radiator 12) has no effect on the Wi-Fi 2.4G band. The left-handed mode excited by the feed stub (first radiator 11) itself generates the resonance of the Wi-Fi 2.4G band.

[0316] As can be seen, the current in the parasitic stub (the aforementioned second radiator 12) is relatively weak, while the current is mainly distributed in the feed stub (the first radiator 11). The current flows from the feed point A to the first ground point D1, forming a left-handed mode. The left-handed mode supporting the Wi-Fi 2.4G band corresponds to the aforementioned second resonant mode supporting the second frequency band.

[0317] Please see Figure 21 , Figure 21 yes Figure 16 The provided antenna assembly 100 is shown in the current distribution diagram when it is operating in the N78 frequency band in a mobile phone simulation model.

[0318] For the N78 frequency band, the series circuit of the first inductor L1 and the first capacitor C1 at connection point H is used to form an equivalent ground in the N78 frequency band. This allows the 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 ground point J2 to the third ground point J3 of the reference ground 500 to the feed point A and the first open end E1 of the feed stub (first radiator 11), generating a loop similar to a half-wavelength U-shaped open resonant loop (generally called the zero-order mode, corresponding to the aforementioned first zero-order resonant mode). The current in the N78 frequency band is concentrated between the feed point A, connection point H, and the second ground point J2 to the third ground point J3 of the reference ground 500, forming the zero-order mode of the N78 frequency band as a whole, corresponding to the aforementioned first zero-order resonant mode.

[0319] Please see Figure 22 , Figure 22 yes Figure 16 The provided antenna assembly 100 is shown in the current distribution diagram when operating in the N79 / Wi-Fi 5G band in a mobile phone simulation model.

[0320] For the N79 / Wi-Fi 5G band, the connecting element 17 between connection point H and feed point A forms an equivalent capacitance, allowing 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 connecting line capacitor (second capacitive element 173) to feed point A and the first open end E1 of the feed stub (first radiator 11), generating a zero-order mode. This zero-order mode is similar to the N78 band mode, and the frequency of this mode generation is increased to 5GHz through the series capacitor (second capacitive element 173). Please refer to [link to relevant documentation]. Figure 22 The 5.2GHz current is concentrated at the feed point A, the connection point H, and the connection element 17, forming a zero-order mode, which corresponds to the aforementioned second zero-order resonant mode.

[0321] The antenna assembly 100 provided in this application utilizes multiple sets of LC circuits to form multiple left-handed modes and zero-order modes, achieving coverage of multiple frequency bands in a very small size. Two sets of left-handed modes generate GPS-L1 and Wi-Fi 2.4G respectively, and two sets of zero-order modes generate N78 and N79 / Wi-Fi 5G respectively. The antenna assembly 100 provided in this application not only achieves coverage of five frequency bands (GPS-L1 + N78 + N79 + Wi-Fi 2.4G + Wi-Fi 5G / N79) in a small-sized mobile phone bezel environment (actually using only 16.5mm in length), but also five frequency bands (LB + MHB / Wi-Fi 2.4G + N78 + Wi-Fi 5G / N79). Furthermore, each mode is highly efficient, meeting practical application requirements; only one antenna feed point is needed, saving PCB board layout; and no switching is required, saving costs.

[0322] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, and such improvements and refinements are also considered to be within the protection scope of this application.

Claims

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

2. The electronic device as claimed in claim 1, characterized in that, 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, and 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. The first capacitor and the first inductor are capacitive to the first frequency band.

3. The electronic device as claimed in claim 1, characterized in that, The antenna assembly further includes a second resonant circuit, one end of which is electrically connected to the connection point, and the other end of which is grounded. The second resonant circuit is short-circuited for the second frequency band and open-circuited for the first frequency band.

4. The electronic device as claimed in claim 3, characterized in that, 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 ends of the second capacitor and the second inductor. The other end of the third inductor is grounded. The second inductor and the second capacitor are used to disconnect the first frequency band, and the second capacitor and the third inductor are used to short-circuit the second frequency band.

5. The electronic device as claimed in claim 1, characterized in that, The antenna assembly also includes a reference ground plane, and the first radiator and the second radiator are both disposed along the first ground plane edge of the reference ground plane; 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 stubs between the second opening end and the connection point, the first resonant circuit, the first floor edge, the first matching branch, and the stubs between the feed point and the first opening end to form a first zero-order resonant mode supporting the third frequency band.

6. The electronic device as claimed in claim 5, characterized in that, The equivalent electrical length of the current path in the first zero-order resonant mode is half the wavelength of the third frequency band.

7. The electronic device according to any one of claims 1 to 6, characterized in that, The antenna assembly also includes: A reference floor is provided, and both the first radiator and the second radiator are disposed along the first floor edge of the reference floor. A connecting element is located in the gap between the first radiator, the second radiator and the first floor edge of the reference floor, one end of the connecting element is electrically connected to the connection point, and the other end of the connecting element is electrically connected to the feed point; The feed source is also used to excite the connection point to the power supply point, and the connection element forms a second zero-order resonant mode that supports the fourth frequency band.

8. The electronic device as claimed in claim 7, characterized in that, The sum of the electrical length between the second opening end and the connection point, the equivalent electrical length of the connection element, and the electrical length between the feed point and the first opening end is half the wavelength of the fourth frequency band.

9. The electronic device as claimed in claim 7, characterized in that, The connecting element includes a first connector and a second capacitive element. One end of the first connector is connected to the connection point, and the other end of the first connector is electrically connected to one end of the second capacitive element. The other end of the second capacitive element is electrically connected to the feed point; or... The connecting element includes a second connector and a second capacitive element. One end of the second connector is connected to the feed point, and the other end of the second connector is electrically connected to one end of the second capacitive element. The other end of the second capacitive element is electrically connected to the connection point; or... The connecting element includes a first connector, a second connector, and a second capacitive element. One end of the first connector is connected to the connection point, and the other end of the first connector is electrically connected to one end of the second capacitive element. One end of the second connector is connected to the power supply point, and the other end of the second connector is connected to the other end of the second capacitive element.

10. The electronic device as claimed in claim 9, characterized in that, The second capacitive element includes a fourth capacitor element or a coupling capacitor gap.

11. An electronic device, characterized in that, The electronic device includes an antenna assembly and a reference ground plane. The antenna assembly includes: A first radiator is provided at intervals along a first floor edge of the reference floor, and the first radiator includes a first grounding point, a power supply point, and a first open end. The second radiator is arranged at intervals along the first floor edge of the reference floor. The second radiator includes a second grounding point, a connection point, and a second open end. The second open end and the first open end are connected by a first coupling gap. A first resonant circuit, one end of which is electrically connected to the connection point, and the other end of which is grounded; 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 with respect to the third frequency band. A feed source, wherein the feed source is electrically connected to the feed point; A connecting element is located in the gap between the first radiator, the second radiator and the first floor edge of the reference floor, one end of the connecting element is electrically connected to the connection point, and the other end of the connecting element is electrically connected to the feed point; The feed source is also used to excite the connection point to the feed point, the first resonant circuit, the first ground plane and the first matching branch to form a first zero-order resonant mode supporting the third frequency band; the feed source is also used to excite the connection point to the feed point and the connecting element to form a second zero-order resonant mode supporting the fourth frequency band.

12. The electronic device as claimed in claim 11, characterized in that, The electrical length of the path formed by the connection point to the feed point, the first resonant circuit, the first floor edge, and the first matching branch is half the wavelength of the third frequency band.

13. The electronic device as claimed in claim 11, characterized in that, The sum of the electrical length between the second opening end and the connection point, the equivalent electrical length of the connection element, and the electrical length between the feed point and the first opening end is half the wavelength of the fourth frequency band.

14. The electronic device as claimed in claim 11, characterized in that, The connecting element includes a first connector and a second capacitive element. One end of the first connector is connected to the connection point, and the other end of the first connector is electrically connected to one end of the second capacitive element. The other end of the second capacitive element is electrically connected to the feed point; or... The connecting element includes a second connector and a second capacitive element. One end of the second connector is connected to the feed point, and the other end of the second connector is electrically connected to one end of the second capacitive element. The other end of the second capacitive element is electrically connected to the connection point; or... The connecting element includes a first connector, a second connector, and a second capacitive element. One end of the first connector is connected to the connection point, and the other end of the first connector is electrically connected to one end of the second capacitive element. One end of the second connector is connected to the power supply point, and the other end of the second connector is connected to the other end of the second capacitive element.

15. The electronic device as claimed in claim 11, characterized in that, 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 feed 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 stub from the connection point to the second ground point and the first resonant circuit to form a first resonant mode that supports the first frequency band.

16. The electronic device as claimed in claim 15, characterized in that, The feed source is also used to excite the stubs between the feed point and the first ground point and the first capacitive element to form a second resonant mode that supports the second frequency band.

17. An electronic device, characterized in that, The electronic device includes an antenna assembly and a reference ground plane. The antenna assembly includes: A first radiator is provided at intervals along a first floor edge of the reference floor, and the first radiator includes a first grounding point, a power supply point, and a first open end. The second radiator is arranged at intervals along the first floor edge of the reference floor. The second radiator includes a second grounding point, a connection point, and a second open end. The second open end and the first open end are connected by a first coupling gap. The matching circuit includes a first capacitive element, one end of which is electrically connected to the feed point; the matching circuit also includes a first matching branch, one end of which is grounded, and the first matching branch is short-circuited for the third frequency band. A first resonant circuit, one end of which is electrically connected to the connection point, and the other end of which is grounded. The first resonant circuit is short-circuited for the third frequency band. A feed source, wherein 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 ground point to form a second resonant mode supporting the second frequency band, and is also used to excite the connection point to the feed point, the first resonant circuit, the first ground edge and the first matching branch to form a first zero-order resonant mode supporting the third frequency band.

18. The electronic device as claimed in claim 17, characterized in that, The first resonant circuit is capacitive for the first frequency band; the feed source is used to excite the stub from the connection point to the second ground point and the first resonant circuit to form a first resonant mode supporting the first frequency band.

19. The electronic device as claimed in claim 17, characterized in that, The antenna assembly also includes: A connecting element is located in the gap between the first radiator, the second radiator and the first floor edge of the reference floor, one end of the connecting element is electrically connected to the connection point, and the other end of the connecting element is electrically connected to the feed point; The feed source is also used to excite the connection point to the power supply point, and the connection element forms a second zero-order resonant 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 plane. The antenna assembly includes: A first radiator is provided at intervals along a first floor edge of the reference floor, and the first radiator includes a first grounding point, a power supply point, and a first open end. The second radiator is arranged at intervals along the first floor edge of the reference floor. The second radiator includes a second grounding point, a connection point, and a second open end. The second open end and the first open end are connected by a first coupling gap. A first resonant circuit, one end of which is electrically connected to the connection point, and the other end of which is grounded; the first resonant circuit is capacitive with respect to a first frequency band and short-circuited with respect to a third frequency band; and The matching circuit further includes a first matching branch, one end of which is grounded, and the first matching branch is short-circuited with respect to the third frequency band. The feed source is used to excite the stub from the connection point to the second ground 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 stub from the connection point to the feed point, the first resonant circuit, the first ground edge and the first matching branch to form a first zero-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 plane. The antenna assembly includes: A first radiator is provided at intervals along a first floor edge of the reference floor, and the first radiator includes a first grounding point, a power supply point, and a first open end. The second radiator is arranged at intervals along the first floor edge of the reference floor. The second radiator includes a second grounding point, a connection point, and a second open end. The second open end and the first open end are connected by a first coupling gap. A first resonant circuit, one end of which is electrically connected to the connection point, and the other end of which is grounded; the first resonant circuit is capacitive with respect to a first frequency band; and The matching circuit further includes a first matching branch, one end of which is grounded; A connecting element is located in the gap between the first radiator, the second radiator and the first floor edge of the reference floor, one end of the connecting element is electrically connected to the connection point, and the other end of the connecting element is electrically connected to the feed point; The feed source is used to excite the stub from the connection point to the second ground 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 feed point and the connecting element to form a second zero-order resonant mode supporting the fourth frequency band.

Images