Antenna structure and electronic device

Abstract

This application provides an antenna structure and an electronic device including the antenna structure. The antenna structure includes a first radiator and a second radiator, with a first open end of the first radiator and a second open end of the second radiator facing each other and spaced apart. By connecting a decoupling circuit between the first and second open ends, the isolation between the first antenna and the second antenna can be improved. The first radiator includes intersecting first and second segments, and the first and second segments are respectively located on adjacent sides of the ground plane, which can further improve the isolation between the first antenna and the second antenna.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to antenna structures and electronic devices. Background Technology

[0002] With the continuous development of communication technology, more antennas need to be deployed in electronic devices such as mobile phones. However, the improvement of internal components such as cameras and battery specifications has made them occupy more and more space. Therefore, the available space for antennas will be further compressed. As a result, the compact design of multiple antennas has become an urgent problem to be solved in recent years. The primary technical challenge of the compact design of multiple antennas is how to achieve the isolation between antennas. Summary of the Invention

[0003] This application provides an antenna and an electronic device, which aims to improve the isolation between antennas, thereby improving the communication performance of the electronic device.

[0004] In a first aspect, this application provides an antenna structure including a first radiator, a second radiator, a ground plane, and a decoupling circuit. The ground plane includes adjacent and intersecting first and second edges. The first radiator includes intersecting first and second segments, the first segment being located on one side of the first edge of the ground plane and spaced apart from the first edge, and the second segment being located on one side of the second edge of the ground plane and spaced apart from the second edge. The first radiator includes a first open end, and the second radiator includes a second open end, with a gap formed between the first and second open ends. The first radiator is entirely located on one side of the gap, and the second radiator is entirely located on the other side of the gap. The decoupling circuit connects the first open end and the second open end.

[0005] In this application, an equivalent capacitance is formed between the first open terminal and the second open terminal. By connecting a decoupling circuit between the first open terminal and the second open terminal, the decoupling circuit can form a band-stop filter with the equivalent capacitance formed between the first open terminal and the second open terminal, thereby preventing current coupling between the first antenna and the second antenna and improving the isolation between the first antenna and the second antenna.

[0006] Furthermore, in this application, the first radiator includes an intersecting first segment and a second segment, and the first segment and the second segment are respectively located on adjacent sides of the ground plane. The ground current generated by the first radiator exciting the ground plane and the ground current generated by the second radiator exciting the ground plane do not have a large area of ​​reversal. Therefore, after connecting the decoupling circuit between the first radiator and the second radiator, the isolation between the first antenna and the second antenna is improved, but the performance of the first antenna or the second antenna will not be greatly affected.

[0007] Furthermore, the first radiator includes intersecting first and second segments, so the ground current generated by the first radiator exciting the ground plane and the ground current generated by the second radiator exciting the ground plane can intersect at a certain angle, instead of the excitation ground plane generating two currents in opposite directions, thus further improving the isolation between the first antenna and the second antenna. Moreover, in this embodiment, the radiation patterns of the first antenna and the second antenna are complementary, therefore, the envelope correlation coefficient (ECC) between the first antenna and the second antenna can be relatively small.

[0008] In some embodiments, the floor further includes a third edge, the first edge connecting the second edge and the third edge, and the third edge being adjacent to and intersecting the first edge, wherein the angle at which the first edge and the second edge intersect, and the angle at which the first edge and the third edge intersect, are in the range of 80° to 100°.

[0009] The first radiator has a first end and a second end. The first end is the end of a first segment of the first radiator that is away from the second segment, and the second end is the end of a second segment of the first radiator that is away from the first segment. The first end is the first open end, and the second end is connected to the floor, or the second end is the third open end of the first radiator.

[0010] In some embodiments of this application, when the first end is the first open end and the second end is connected to the floor, one end of the first radiator is an open end (i.e., the first open end) and is not connected to the floor; the other end (i.e., the second end) is a ground end and is connected to the floor. In some embodiments of this application, the first antenna can generate a 1 / 4 wavelength mode antenna pattern. When the first end is the first open end and the second end is the third open end, both ends of the first radiator are open ends (i.e., the first open end and the third open end), meaning neither end of the first radiator is connected to the floor. In some embodiments of this application, the first antenna can generate both a 1 / 4 wavelength mode antenna pattern and a 1 / 2 wavelength mode antenna pattern.

[0011] In some embodiments, the second radiator includes intersecting third and fourth segments; the third segment of the second radiator is located on one side of the first edge and spaced apart from the first edge, and the fourth segment of the second radiator is located on one side of the third edge and spaced apart from the third edge. The end of the second radiator includes a third end and a fourth end; the third end is the end of the third segment of the second radiator away from the fourth segment, and the fourth end is the end of the fourth segment of the second radiator away from the third segment. The third end is the second open end, and the fourth end is connected to the floor, or the fourth end is the fourth open end of the second radiator.

[0012] In this embodiment, the first radiator includes intersecting first and second segments, and the second radiator includes intersecting third and fourth segments. The first radiator can be a structure with one end open and the other end grounded, or a structure with both ends open. The second radiator can also be a structure with one end open and the other end grounded, or a structure with both ends open. The ground current generated by the excitation ground of the first radiator and the ground current generated by the excitation ground of the second radiator do not have a large area of ​​opposite direction. Therefore, after connecting a decoupling circuit between the first and second radiators, the isolation between the first antenna and the second antenna is improved without significantly affecting the performance of either the first or second antenna. Furthermore, the ground current generated by the excitation ground of the first radiator and the ground current generated by the excitation ground of the second radiator can intersect at a certain angle, rather than the excitation ground generating two currents in opposite directions, thus further improving the isolation between the first antenna and the second antenna. In some embodiments of this application, the second antenna can also generate a 1 / 4 wavelength mode antenna mode and / or a 1 / 2 wavelength mode antenna mode.

[0013] In some embodiments, the entire second radiator is located on one side of the second edge and spaced apart from the second edge, and the second radiator is located on the side of the second segment of the first radiator away from the first segment. The end of the first radiator includes a first end and a second end, the first end being the end of the first segment of the first radiator away from the second segment, and the second end being the end of the second segment of the first radiator away from the first segment. The end of the second radiator includes a third end and a fourth end, the third end being closer to the first radiator than the fourth end. The second end of the first radiator is the first open end, and the third end of the second radiator is the second open end. The decoupling circuit connects the second end of the first radiator and the third end of the second radiator.

[0014] In this embodiment, only the first radiator includes intersecting first and second segments, while the second radiator has a linear structure. The ground current generated by the excitation ground of the first radiator and the ground current generated by the excitation ground of the second radiator do not have a large area of ​​opposite direction. Therefore, after connecting a decoupling circuit between the first and second radiators, the isolation between the first and second antennas is improved without significantly affecting the performance of either the first or second antenna. Furthermore, the ground current generated by the excitation ground of the first radiator and the ground current generated by the excitation ground of the second radiator intersect at a certain angle, rather than the excitation grounds generating two currents in opposite directions, thus further improving the isolation between the first and second antennas. In some embodiments of this application, the second antenna can also generate a 1 / 4 wavelength mode antenna mode and a 1 / 2 wavelength mode antenna mode.

[0015] In some embodiments, the first radiator further includes a third open end, with the first end being the third open end; the fourth end of the second radiator is connected to the floor. In this embodiment, the first radiator has a structure with both ends being open; the second radiator includes one open end and one grounding end.

[0016] In some embodiments, the operating frequency band of the first operating mode of the first radiator is the same as or differs from the operating frequency band of the second operating mode of the second radiator by less than 1 GHz.

[0017] In some embodiments, the operating frequency band of the first operating mode of the first radiator and the operating frequency band of the second operating mode of the second radiator are either sub-6 GHz operating frequency bands. In some embodiments, one of the first or second radiators includes a first sub-radiator and a second sub-radiator spaced apart, with the entire first sub-radiator located on one side of the second sub-radiator, and the entire other radiator located on the other side of the second sub-radiator. The first sub-radiator is coupled to the second sub-radiator, and the end of the second sub-radiator furthest from the first sub-radiator is either the first open end or the second open end.

[0018] In this embodiment of the application, the first radiator or the second radiator includes a first sub-radiator and a second sub-radiator spaced apart. When the user's hand or other structure blocks the gap between the first radiator and the second radiator, and the user's hand or other structure connects the open end of the first radiator to the open end of the second radiator, the isolation between the first antenna and the second antenna will not deteriorate drastically.

[0019] In some embodiments, the electrical length of the second sub-radiator is less than 1 / 4 of the wavelength of the decoupling frequency band of the antenna structure. The decoupling frequency band is the same as the operating frequency band of the first operating mode of the first radiator or the same as the operating frequency band of the second operating mode of the second radiator. This avoids the second sub-radiator being too long and affecting the arrangement of the first and second sub-radiators, ensuring that at least one of the first and second sub-radiators can include the first segment and the second segment.

[0020] In some implementations, the second sub-radiator is provided with a feed point for receiving signal feed, so that the second sub-radiator can radiate signals as a separate radiating branch, increasing the antenna's operating modes.

[0021] In some implementations, the decoupling circuit is inductive, and the equivalent inductance value of the decoupling circuit is related to the operating frequency band of the first operating mode of the first radiator and / or the operating frequency band of the second operating mode of the second radiator.

[0022] In some embodiments, the decoupling circuit includes a lumped inductor or a distributed inductor. In some embodiments, the decoupling circuit includes a first branch and a second branch connected in parallel, wherein the equivalent inductance value of the first branch is different from that of the second branch. In some embodiments, the first branch is an inductive filter circuit, and the second branch includes a lumped inductor or a distributed inductor, thereby ensuring that when the operating frequencies of the first radiator and the second radiator change, the inductance value of the decoupling circuit connected between the first open terminal of the first radiator and the second open terminal of the second radiator can change accordingly, so as to ensure that the first antenna and the second antenna always maintain a good degree of isolation.

[0023] In some implementations, the first branch includes a capacitor, a first inductor, and a second inductor, wherein the capacitor is connected in parallel with the first inductor and then in series with the second inductor; the second branch includes a third inductor.

[0024] In some embodiments, the decoupling circuit is connected to a first connection point of the first open end, the first connection point being within 0-2 mm of the end face of the first open end, and / or the decoupling circuit is connected to a second connection point of the second open end, the second connection point being within 0-2 mm of the end face of the second open end. By connecting the decoupling circuit to the ends of the open ends of the two radiators respectively, and with the connection points both located within 0-2 mm of the end face, good isolation between the first and second antennas can be ensured, and space in the electronic equipment can be saved.

[0025] Secondly, this application also provides an electronic device, which includes a radio frequency (RF) front-end and the aforementioned antenna structure. A first feed point is provided on the first radiator, and a second feed point is provided on the second radiator. The RF front-end connects the first feed point and the second feed point. Because the antenna structure of this application provides good isolation between the first and second antennas, and the antenna efficiency of a single antenna is not significantly reduced, the individual antennas of the electronic device can be designed to be more compact, and the electronic device can have better RF signal transmission capabilities.

[0026] In some embodiments, the electronic device includes a metal frame comprising the first radiator and the second radiator, thereby reducing the space occupied by the antenna structure in the electronic device.

[0027] In some embodiments, the floor includes any one of one or more grounded middle plates, one or more grounded circuit board grounding layers, one or more grounded metal elements, or any combination of two or more of them.

[0028] In some embodiments, the electronic device includes a motherboard, which is a circuit board, and the ground plane of the motherboard can serve as a ground plane. Alternatively, in some other embodiments, the ground plane of the motherboard is connected to a middle board, and the ground planes of the middle board and the motherboard together serve as a ground plane. Alternatively, in some embodiments, the electronic device also includes a small board, which is also a circuit board, and the ground planes of both the motherboard and the small board can serve as ground planes, or the ground plane of the motherboard and / or the ground plane of the small board and / or the middle board serve as ground planes. Attached Figure Description

[0029] To more clearly illustrate the structural features and effects of this application, a detailed description is provided below in conjunction with the accompanying drawings and specific embodiments.

[0030] Figure 1 This is a schematic diagram of the structure of an electronic device according to one embodiment of this application.

[0031] Figure 2 for Figure 1 The diagram shows the internal structure of the electronic device.

[0032] Figure 3 This is a schematic diagram of the topology of an antenna structure according to one embodiment of this application.

[0033] Figure 4a This is a schematic diagram of the topology of an antenna structure according to another embodiment of this application.

[0034] Figure 4b This is a schematic diagram of the topology of an antenna structure according to another embodiment of this application.

[0035] Figure 5This is a schematic diagram of the internal structure of an electronic device according to another embodiment of this application.

[0036] Figure 6a This is a schematic diagram of the decoupling circuit according to another embodiment of this application.

[0037] Figure 6b This is a schematic diagram of the decoupling circuit according to another embodiment of this application.

[0038] Figure 6c This is a schematic diagram of the decoupling circuit according to another embodiment of this application.

[0039] Figure 7 for Figure 3 The return loss curve and isolation curve of the antenna structure of the embodiment shown are illustrated.

[0040] Figure 8 for Figure 3 A comparison diagram showing the efficiency of the first antenna when the antenna structure of the illustrated embodiment is in operation and the efficiency when the first antenna is operating alone.

[0041] Figure 9 for Figure 3 A comparison diagram showing the efficiency of the second antenna when the antenna structure of the illustrated embodiment is in operation and the efficiency of the second antenna operating alone.

[0042] Figure 10 for Figure 3 The radiation pattern of the first antenna in the antenna structure shown in the embodiment.

[0043] Figure 11 for Figure 3 The radiation pattern of the second antenna in the illustrated embodiment.

[0044] Figure 12 This is a schematic diagram of the topology of an antenna structure according to another embodiment of this application.

[0045] Figure 13 for Figure 12 The return loss curve and isolation curve of the antenna structure of the embodiment shown are illustrated.

[0046] Figure 14 for Figure 12 The diagram shows a comparison of the antenna efficiency of the first antenna when the antenna structure is in operation with the antenna efficiency when the first antenna is operating alone.

[0047] Figure 15 for Figure 12 The radiation pattern of the first antenna in the antenna structure shown is in 1 / 4 wavelength mode.

[0048] Figure 16 for Figure 12 The radiation pattern of the second antenna of the antenna structure shown is in 1 / 4 wavelength mode.

[0049] Figure 17 This is a schematic diagram of the topology of an antenna structure according to another embodiment of this application.

[0050] Figure 18 for Figure 17 The diagram shows the return loss curve and isolation curve of the antenna structure.

[0051] Figure 19 for Figure 17 The diagram shows a comparison of the efficiency of the first antenna when the antenna structure is in operation with the efficiency of the first antenna operating alone.

[0052] Figure 20 for Figure 17 The diagram shows a comparison of the efficiency of the second antenna when the antenna structure is in operation with the efficiency of the second antenna operating alone.

[0053] Figure 21 for Figure 17 The radiation pattern of the first antenna in the antenna structure shown in the embodiment.

[0054] Figure 22 for Figure 17 The radiation pattern of the second antenna in the illustrated embodiment.

[0055] Figure 23 This is a schematic diagram of an antenna structure according to another embodiment of this application.

[0056] Figure 24 for Figure 23 The diagram shows the return loss and isolation curves of the antenna structure.

[0057] Figure 25 for Figure 23 The diagram shows a comparison of the antenna efficiency of the first antenna when the antenna structure is in operation with the antenna efficiency when the first antenna is operating alone.

[0058] Figure 26 for Figure 23 The radiation pattern of the first antenna in the antenna structure shown in the embodiment.

[0059] Figure 27 for Figure 23 The radiation pattern of the second antenna in the illustrated embodiment.

[0060] Figure 28 This is a schematic diagram of an antenna structure according to another embodiment of this application.

[0061] Figure 29This is a schematic diagram of an antenna structure according to another embodiment of this application.

[0062] Figure 30 for Figure 28 The diagram shows the return loss and isolation curves of the antenna structure.

[0063] Figure 31 for Figure 28 The antenna efficiency diagrams for the first and second antennas of the antenna structure shown are displayed.

[0064] Figure 32 for Figure 28 The diagram shows a comparison of the antenna efficiency of the first antenna when the antenna structure is in operation with the antenna efficiency when the first antenna is operating alone.

[0065] Figure 33 for Figure 28 The diagram shows a comparison of the antenna efficiency of the second antenna in the antenna structure shown, and the antenna efficiency when the second antenna operates alone.

[0066] Figure 34 for Figure 28 The radiation pattern of the first antenna of the antenna structure in the illustrated embodiment when operating in 1 / 4 wavelength mode.

[0067] Figure 35 for Figure 28 The radiation pattern of the second antenna in the illustrated embodiment.

[0068] Figure 36 This is a schematic diagram of an antenna structure according to another embodiment of this application.

[0069] Figure 37 for Figure 36 The diagram shows the return loss and isolation curves of the antenna structure.

[0070] Figure 38 for Figure 36 The antenna efficiency diagrams for the first and second antennas of the antenna structure shown are displayed.

[0071] Figure 39 This is a schematic diagram of an antenna structure according to another embodiment of this application.

[0072] Figure 40 for Figure 39 The diagram shows the return loss curve and isolation curve of the antenna structure.

[0073] Figure 41 for Figure 39 The antenna efficiency diagrams for the first and second antennas in the free state are shown.

[0074] Figure 42 To cover Figure 39 The diagram shows the return loss curve and isolation curve of the antenna structure when there is a gap between the first radiator and the second radiator.

[0075] Figure 43 To cover Figure 39 The diagram shows the return loss curve and isolation curve of the antenna structure when there is a gap between the first sub-radiator and the second sub-radiator of the first radiator.

[0076] Figure 44 This is a schematic diagram of the topology of an antenna structure according to another embodiment of this application. Detailed Implementation

[0077] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0078] This application provides an electronic device including an antenna, which enables the electronic device to transmit signals. In this application, the electronic device can be a mobile phone, tablet computer, PC, router, wearable device, etc. This application uses a mobile phone as an example to describe the electronic device.

[0079] Please see Figure 1 and Figure 2 , Figure 1 The diagram shown is a structural schematic of an electronic device 1000 according to one embodiment of this application. Figure 2 As shown Figure 1The diagram shows the internal structure of the electronic device 1000. In this embodiment, the electronic device 1000 includes a mid-frame 110, a motherboard 120, a display screen 130, a back cover (not shown), and an antenna structure. The display screen 130 and the back cover are both fixed to the mid-frame 110. The fixing of the display screen 130, the back cover, and the mid-frame 110 forms a receiving space, within which the motherboard 120 can be received. In this embodiment, the mid-frame 110 includes a frame 111 and a middle plate 112. The frame 111 surrounds and connects to the middle plate 112. In some embodiments of this application, the frame 111 and the middle plate 112 can be an integrally formed structure; or the frame 111 and the middle plate 112 can be separately formed independent structures, connected by screws, clips, spring clips, or by welding, bonding, or other methods. In some embodiments, the protrusion extending inward from the inner side of the frame 111 can also be used as a connector, or the protrusion extending from the edge of the middle plate 112 towards the frame 111 can be used as a connector to connect the frame 111 and the middle plate 112. In this embodiment, the main board 120 is fixed to the middle plate 112 so that the main board 120 is fixed in the electronic device 1000. It is understood that in some other embodiments of this application, the middle frame 110 may only include the frame 111 without the middle plate 112, and the main board 120 may be fixed in the electronic device 1000 in other ways.

[0080] In some embodiments of this application, the motherboard 120 is provided with a radio frequency (RF) front-end 140. The RF front-end 140 can be connected to the antenna structure signal to transmit the processed RF signal to the antenna structure and send it out, or to process the RF signal received by the antenna structure. Specifically, in some embodiments of this application, the RF front-end 140 may include a transmitting path and a receiving path. The transmitting path includes devices such as power amplifiers and filters, used to amplify and filter the RF signal before transmitting it to the antenna structure, and the antenna structure then sends out the processed RF signal. The receiving path includes devices such as low-noise amplifiers and filters, used to process the RF signal received by the antenna structure to ensure that the useful RF signal can be completely and undistortedly picked up from space and delivered to subsequent frequency conversion, intermediate frequency amplification, and other circuits.

[0081] Please refer to the following: Figure 2 and Figure 3 , Figure 3 The diagram shown is a topology diagram of an antenna structure 100 according to an embodiment of this application. The antenna structure 100 includes a first antenna 10, a second antenna 20, a decoupling circuit 30, and a ground plane 40.

[0082] In this application, the ground plane 40 can serve as a reference ground for the electronic device 1000. In some embodiments of this application, the ground plane 40 can be formed by any one of a grounded middle plate 112, a ground layer of a circuit board, or a grounding metal component built into the electronic device 1000, or by a combination of two or more of the grounded middle plate 112, the ground layer of the circuit board, and the grounding metal component built into the electronic device 100. In this embodiment, the middle plate 112 of the middle frame 110 is grounded, and the middle plate 112 serves as the ground plane 40 of the antenna structure 100 of this embodiment. Alternatively, in other embodiments of this application, the motherboard 120 in the electronic device 1000 includes a ground layer, then the ground layer of the motherboard 120 can serve as the ground plane 40, or the ground layer of the motherboard 120 and the middle plate 112 are electrically connected to each other and together serve as at least a part of the ground plane 40. Alternatively, in some embodiments, the electronic device 1000 may include one or more middle plates 112, and / or one or more ground layers of circuit boards, and / or one or more grounding metal components; the ground plane in this application can be any two or more of these components. For example, the electronic device 1000 may also include a small board, which is also a circuit board including a ground plane. The small board in the electronic device 1000 can serve as a ground plane. When the ground plane of the small board is electrically connected to the ground plane of the main board 120 or the ground plane 40, the ground plane of the small board, the ground plane of the main board 120, or the ground plane 112 can all serve as the ground plane 40 of the electronic device 1000. In this embodiment, the ground plane 40 includes a first edge 41, a second edge 42, and a third edge 43. The first edge 41 connects between the second edge 42 and the third edge 43, and the second edge 42 intersects with the first edge 41, and the third edge 43 intersects with the first edge 41. In one embodiment of this application, the ground plane 40 is a rectangular plate. The first edge 41, the second edge 42, and the third edge 43 are three adjacent sides of the rectangular ground plane. In this embodiment, the first edge 41 is a short side of the ground plane 40, and the second edge 42 and the third edge 43 are two opposite long sides of the ground plane 40. Both the first edge 42 and the third edge 43 intersect the first edge 41 perpendicularly. It should be noted that the first edge 41, second edge 42, and third edge 43 in this embodiment are names given to the edges of the floor 40 for ease of description. It is understood that in other embodiments of this application, one long edge of the floor 40 may be named the first edge 41, and the two opposite short edges of the floor 40 may be named the second edge 42 and the third edge 43, respectively. For example, please refer to... Figure 4a and Figure 4b , Figure 4a The diagram shown is a topology diagram of an antenna structure 100 according to another embodiment of this application. Figure 4b The diagram shown is a topology diagram of an antenna structure 100 according to another embodiment of this application. Figure 4aand Figure 4b In the illustrated embodiment, one long side of the floor 40 is the first edge 41, and the two opposite short sides of the floor 40 are the second edge 42 and the third edge 43, respectively. It should be noted that in this embodiment, "rectangular floor 40" means that the overall outline of the floor 40 is rectangular. The edges of the floor 40 can have regular or irregular gaps / grooves or protrusions / projections, etc., depending on actual needs. The first edge 41 to the fourth edge 44 can be formed by multiple bent edges; this application does not impose any limitations.

[0083] This application describes the floor 40 as having a rectangular overall outline. It is understood that the overall outline of the floor 40 may not be rectangular; for example, it may be other regular or irregular shapes. The floor 40 of this application has three outline edges that intersect at successively angles, with the angle between the edges ranging from 80° to 100°. Figure 3 The first edge 41, the second edge 42, and the third edge 43 shown are perpendicular in sequence. It should be noted that the perpendicularity described in this application is not strictly mathematical 90°, and a certain deviation is allowed.

[0084] In this application, the first antenna 10 includes a first radiator 11 and a first feed circuit 12. The first radiator 11 has a first feed point C. One end of the first feed circuit 12 is connected to a radio frequency front-end 140, and the other end is connected to the first feed point C on the first radiator 11, so as to transmit the radio frequency signal processed by the radio frequency front-end 140 to the first radiator 11, or to transmit the radio frequency signal received by the first radiator 11 to the radio frequency front-end 140 for signal processing. It should be noted that in this embodiment, the first feed point C is the location where the first feed circuit 12 on the first radiator 11 is connected to the first radiator 11. In this embodiment, the first feed circuit 12 is a feed cable. It is understood that in other embodiments of this application, the first feed circuit 12 may also include tuning elements such as capacitors and inductors, thereby adjusting the electrical length of the first radiator 11 so that the first radiator 11 can operate in the required operating frequency band.

[0085] The second antenna 20 includes a second radiator 21 and a second feed circuit 22. The second radiator 21 has a second feed point D. One end of the second feed circuit 22 is connected to the radio frequency front-end 140, and the other end is connected to the second feed point D on the second radiator 21. This allows the second radiator 21 to transmit the radio frequency signal processed by the radio frequency front-end 140 to the second radiator 21, or to transmit the radio frequency signal received by the second radiator 21 to the radio frequency front-end 140 for signal processing. It should be noted that in this embodiment, the second feed point D is the location where the second feed circuit 22 connects to the second radiator 21. In this embodiment, the second feed circuit 22 is a feed cable. It is understood that in other embodiments of this application, the second feed circuit 22 may also include tuning elements such as capacitors and inductors to adjust the electrical length of the second radiator 21, enabling the second radiator 21 to operate in the required operating frequency band.

[0086] In this embodiment, the frame 111 is made of a conductive material. For example, the frame 111 is made of metal. A portion of the frame 111 can serve as the first radiator 11 and the second radiator 21 of the antenna structure 100, thereby reducing the space occupied by the antenna structure 100 in the electronic device 1000. Furthermore, in this embodiment, there is a certain gap between the portion of the frame 111 that serves as the first radiator 11 and the second radiator 21 and the middle plate 112 that serves as the ground plane 40, thereby ensuring that the first antenna 10 and the second antenna 20 have sufficient clearance and that the first antenna 10 and the second antenna 20 have good antenna efficiency.

[0087] It is understood that in some other embodiments of this application, the frame 111 of the middle frame 110 may also be made of other materials, and the frame 111 may not serve as the first radiator 11 or the second radiator 21 of the antenna structure 100. Please refer to Figure 5 , Figure 5 The diagram shown is a schematic diagram of the internal structure of an electronic device 1000 according to another embodiment of this application. Figure 5 In the illustrated embodiment, the frame 111 can be made of a non-conductive material. The frame 111 can also be made of an insulating material, such as plastic or glass. The frame 111 can serve as an antenna support for mounting the first radiator 11 and the second radiator 21 of the antenna structure 100. The first radiator 11 and the second radiator 21 of the antenna structure 100 can be fixedly mounted on the inner surface of the frame 111 facing the receiving space of the electronic device 1000.

[0088] Please refer to the previous document. Figure 2 and Figure 3In this embodiment, both the first radiator 11 and the second radiator 12 include two opposing ends. The end of a radiator (first radiator 11 or second radiator 21) refers to the portion of the radiator connected to its end face (e.g., depending on the length of the radiator, the end of the radiator can be a radiator with a length of 5mm, 2mm, or less than 1mm from its end face). The end face refers to the plane at both ends of the radiator. It should be noted that the plane described in this application is not a strictly mathematical plane and a certain deviation is allowed. The first radiator 11 includes at least one open end, and the second radiator 21 also includes at least one open end. The open end refers to the end of the radiator that is not grounded. In this embodiment, the "ungrounded end" refers to a radiator with a length of one-quarter wavelength from its end face that has no grounding point and no coupled grounding region. In this embodiment, the open end is the ungrounded end of the radiator with a length of 5mm, 2mm, or 1mm from its end face. In this embodiment, at least one open end of the first radiator 11 includes a first open end, and at least one open end of the second radiator 21 includes a second open end. The first open end and the second open end are opposite to each other and form a gap 13, such as... Figure 3 As shown, the dimension d of the gap 13 is the distance between the first open end face of the first radiator 11 and the second open end face of the second radiator 21. The decoupling circuit 30 is connected between the first open end and the second open end. For example, one end of the decoupling circuit 30 is connected to the first open end face of the first radiator 11 or the first open end including the end face, and the other end of the decoupling circuit 30 is connected to the second open end face of the second radiator 21 or the second open end including the end face. Another example is that one end of the decoupling circuit 30 is connected to a position within 5mm (e.g., within 2mm or 1mm) of the first radiator 11, and the other end of the decoupling circuit 30 is connected to a position within 5mm (e.g., within 2mm or 1mm) of the second radiator 21. In this embodiment, the decoupling circuit 30 may include an inductor 31 and a trace 32 connecting the inductor 31 to the first and second open ends; alternatively, the decoupling circuit 30 may be an inductive decoupling circuit. The inductor 31 can be a lumped inductor or a distributed inductor. In this embodiment, the decoupling circuit 30 can be a band-stop decoupling circuit. The decoupling circuit 30 can prevent the coupling between the operating frequency band generated by the first radiator 11 and the operating frequency band generated by the second radiator 21, thereby improving the isolation between the first antenna 10 and the second antenna 20.

[0089] In this embodiment, the resonant frequency band of the first operating mode of the first radiator 11 differs from the operating frequency band of the second operating mode of the second radiator 21 by less than 1 GHz; for example, the resonant frequency band of the first operating mode is the same as the operating frequency band of the second operating mode. Both the operating frequency band of the first operating mode of the first radiator 11 and the operating frequency band of the second operating mode of the second radiator 21 can be any sub-6 GHz operating frequency band. This will be described in detail in the specific embodiments of this application and will not be repeated here.

[0090] In this embodiment, the decoupling circuit 30 can be disposed on the motherboard 40. In some embodiments, the trace 32 of the resistive structure circuit 30 is disposed on the motherboard 40, and the inductor 31 is disposed (e.g., bonded) on the motherboard 40 and connected to the trace disposed on the motherboard 40. In some embodiments, a spring contact 60 is fixed on the first open end of the first radiator 11 and the second open end of the second radiator 21, and the spring contact 60 is connected to the trace 32 on the motherboard 40, thereby realizing the connection between the first open end of the first radiator 11 and the second open end of the second radiator 21 and the decoupling circuit 30. It is understood that in other embodiments of this application, the connection between the first open end of the first radiator 11 and the second open end of the second radiator 21 and the decoupling circuit 30 can also be in other ways, which will not be described in detail here. It is understood that the decoupling circuit 30 can also be disposed on other substrates, such as a printed circuit board (PCB) or a flexible printed circuit (FPC) that is separate from the motherboard. The substrate with the decoupling circuit 30 can be electrically connected to the motherboard through a flexible transmission line, which will not be elaborated here.

[0091] In this application, there is a gap 13 between the end face of the first open end and the end face of the second open end. An equivalent capacitance can be formed between the end face of the first open end and the end face of the second open end. By connecting a decoupling circuit 30 between the first open end and the second open end, the decoupling circuit 30 can form a band-stop filter with the equivalent capacitance formed between the end faces of the two open ends. The band-stop filter can prevent current coupling between the first antenna 10 and the second antenna 20, thereby improving the isolation between the first antenna 10 and the second antenna 20.

[0092] In this embodiment, the inductance value of the inductor 31 included in the decoupling circuit 30, or the inductance value of the inductive decoupling circuit, can be considered as the equivalent inductance value of the decoupling circuit 30. When the width of the gap 13 between the first radiator 11 of the first antenna 10 and the second radiator 21 of the second antenna 20 is different, the equivalent capacitance value between the endpoints of the first open end and the second open end is different. The setting of the equivalent inductance value and the equivalent capacitance value between the open ends of the decoupling circuit 30 can be based on the operating frequency bands of the first antenna 10 and the second antenna 20, thereby obtaining a better isolation between the first antenna 10 and the second antenna 20 at their operating frequencies. In this embodiment, the operating frequency bands of the first antenna 10 and the second antenna 20 include any frequency band in sub-6GHz. For example, the first antenna 10 and the second antenna 20 can operate in the low-frequency band (500MHz~1GHz), and / or the mid-frequency band (1GHz~3GHz), and / or the high-frequency band (3GHz~6GHz). In one embodiment of this application, at least one operating frequency band of the first antenna 10 is the same as or differs from at least one operating frequency band of the second antenna 20 by less than 1 GHz. By connecting a decoupling circuit 30 between the first open terminal and the second open terminal, the isolation between the first antenna 10 and the second antenna 20 can be improved. In this application, "same operating frequency band" can be understood as "same frequency." It should be understood that "same operating frequency band" and "same frequency" mean that at least one operating frequency band of the first antenna 10 enables the electronic device 1000 to support the first frequency band, and at least one operating frequency band of the second antenna 20 also enables the electronic device 1000 to support the first frequency band, rather than that the first antenna 10 and the second antenna 20 have at least one completely identical operating frequency range. In some embodiments, the operating frequency band of the first radiator 11 and the operating frequency band of the second radiator 21 may differ by less than 1 GHz. For example, in some embodiments, the operating frequency band of the first radiator 11 and the operating frequency band of the second radiator 21 may differ by 0.9 GHz or 0.5 GHz. It should be understood that the difference between the operating frequency band of the first radiator 11 and the operating frequency band of the second radiator 21 is the difference between the center frequency of the operating frequency band of the first radiator 11 and the center frequency of the operating frequency band of the second radiator 21.

[0093] It should be noted that, in the embodiments of this application, when the operating frequency band of the first radiator 11 is the same as that of the second radiator 21, or when the difference between the operating frequency bands of the first radiator 11 and the second radiator 21 is small, the isolation between the first antenna 10 and the second antenna 20 is improved by using a decoupling circuit 30 that connects the first open end of the first radiator 11 and the second open end of the second radiator 21. The center frequency of the operating frequency band of the first radiator 11 or the center frequency of the operating frequency band of the second radiator 21 is the decoupling frequency of the antenna structure 100 in this application. It is understood that in some embodiments of this application, both the first radiator 11 and the second radiator 21 may have multiple operating frequency bands. When the multiple operating frequency bands of the first radiator 11 and the second radiator 21 are the same or close, the antenna structure 100 may also have multiple decoupling frequencies.

[0094] In this embodiment of the application, when the inductor 31 included in the decoupling circuit 30 is a lumped inductor, the lumped inductor can be... Figure 3 The component represented by inductor 30. When the inductor 31 included in the decoupling circuit 30 is a distributed inductor, the distributed inductor can be an inductor formed by traces and / or windings. For example, please refer to Figure 6a , Figure 6a The diagram shown is a structural schematic of the decoupling circuit 30 according to another embodiment of this application. Figure 6a The inductor 31 included in the decoupling circuit 30 of the illustrated embodiment represents a distributed inductor formed by winding metal traces.

[0095] In some embodiments of this application, when the decoupling circuit 30 is an inductive decoupling circuit, the inductive decoupling circuit can be formed by connecting one or more inductors and one or more capacitors in parallel and / or in series. Please refer to [link to relevant documentation]. Figure 6b , Figure 6b The diagram shown is a structural schematic of the decoupling circuit 30 according to another embodiment of this application. Figure 6bThe decoupling circuit 30 in the illustrated embodiment is an inductive decoupling circuit, including a first branch A1 and a second branch A2 connected in parallel. The first branch A1 is an inductive filter circuit, and the second branch A2 includes a lumped inductor or a distributed inductor. The inductance value of the first branch A1 is different from that of the second branch A2. The inductance value of the decoupling circuit is different when the decoupling frequency of the antenna structure 100 is greater than a threshold and less than a threshold, respectively. Therefore, when the operating frequency of the antenna structure 100 (i.e., the operating frequency of the first radiator 11 and the second radiator 21) changes, the inductance value of the decoupling circuit 30 connected between the first open terminal of the first radiator 11 and the second open terminal of the second radiator 21 can change accordingly to ensure that the first antenna 10 and the second antenna 20 always have a good degree of isolation. Specifically, in some embodiments of this application, the decoupling circuit 30 includes three inductors and one capacitor 33, wherein the three inductors are a first inductor 31a, a second inductor 31b, and a third inductor 31c. The first branch A1 includes a capacitor 33, a first inductor 31a, and a second inductor 31b. The capacitor 33 is connected in parallel with the first inductor 31a and then in series with the second inductor 31b. In this embodiment, the first branch A1 formed by the parallel connection of the first inductor 31a and the capacitor 33 and the series connection of the second inductor 31b is equivalent to a filter circuit. The second branch A2 includes a third inductor 31c. The second branch A2 is connected in parallel with the first branch A1. The inductance value of the filter circuit in the first branch A1 is different from the inductance value of the second branch A2. Furthermore, in this embodiment, the equivalent inductance of the filter circuit is different from the inductance value of the third inductor 31c. When the two ends of the decoupling circuit 30 in this embodiment are connected to the first open end of the first radiator 11 and the second open end of the second radiator 21, respectively, when the operating frequencies of the first radiator 11 and the second radiator 21 are within the threshold range (or, in other words, when the decoupling frequency of the antenna structure 100 is less than the threshold), the filter circuit is equivalent to an open circuit. This is equivalent to connecting a third inductor 31c between the first open terminal of the first radiator 11 and the second open terminal of the second radiator 21. When the operating frequencies of the first radiator 11 and the second radiator 21 exceed a threshold range (or, in other words, when the decoupling frequency of the antenna structure 100 is greater than a threshold), the filter circuit allows the signal from the first radiator 11 to be transmitted to the second radiator 21. This is equivalent to the inductance of the filter circuit being equal to the value of the inductance of the first radiator 11 connected between the first open terminal of the first radiator 11 and the second open terminal of the second radiator 21, ensuring that the inductance value of the decoupling circuit connected between the first open terminal of the first radiator 11 and the second open terminal of the second radiator 21 changes accordingly when the operating frequencies of the first radiator 11 and the second radiator 21 change, thus ensuring good isolation between the first antenna 10 and the second antenna 20.

[0096] It should be noted that, in this embodiment, the operating frequency of the first antenna 10 is the frequency of the signal generated by the resonance of the first radiator 11. Similarly, the operating frequency of the second antenna 20 is the frequency of the signal generated by the resonance of the second radiator 21.

[0097] Please see Figure 6c , Figure 6c The diagram shows a structural schematic of the decoupling circuit 30 according to another embodiment of this application. In this embodiment, the decoupling circuit 30 may further include multiple inductors 311, 312, and 313 with different inductance values, and a switching switch 34. When the operating frequencies of the first radiator 11 and the second radiator 21 change, the switching switch 34 can switch to different inductors, thereby ensuring that the first antenna 10 and the second antenna 20 maintain good isolation when their operating frequencies change. In this embodiment, the decoupling circuit 30 includes three inductors with different inductance values, connected in parallel. The switching switch 34 is a single-pole three-throw switch, capable of switching to any one of the three inductors as needed.

[0098] Please refer to the previous document. Figure 2 and Figure 3 , Figure 2 and Figure 3In the illustrated embodiment, the first radiator 11 includes a first end 111 and a second end 112, and the second radiator 21 includes a third end 211 and a fourth end 212. The second end 112 of the first radiator 11 is farther away from the first end 111 than the second radiator 21, and the fourth end 212 of the second radiator 21 is farther away from the first end 111 than the first radiator 11. In this embodiment, both the first radiator 11 and the second radiator 21 have only one open end. The first end 111 is the first open end of the first radiator 11, and the third end 211 is the second open end of the second radiator 21. The first end 111 and the third end 211 are opposite each other and there is a gap 13 between them. The decoupling circuit 30 connects the first end 111 and the third end 211. The second end 112 and the fourth end 212 are both connected to the ground plane 40, that is, the second end 112 and the fourth end 212 are both grounded. In this embodiment, a spring 60 can be fixed to the second end 112 and the fourth end 212, and the spring 60 is connected to the floor 40; or, by setting (e.g., bonding) a metal sheet, the metal sheet is connected to the second end 112 and the floor 40, and the fourth end 212 is connected to the floor 40; or, the first radiator 11 is connected to the floor 40 through the protrusion of the second end 112 and the protrusion of the second radiator 12 at the fourth end 212. It is understood that in other embodiments of this application, the connection between the second end 112 and the fourth end 212 and the floor 40 can also be achieved by other methods such as wire bonding. In this embodiment, both the first radiator 11 and the second radiator 21 include an open end and a ground end. It is understood that in other embodiments of this application, the first radiator 11 may include two open ends, that is, both the first end 111 and the second end 112 may be open ends; the second radiator 21 may also include two open ends, that is, both the third end 211 and the fourth end 212 may be open ends.

[0099] In this embodiment, the first radiator 11 has an "L"-shaped structure, and the "L"-shaped first radiator 11 includes a first segment and a second segment, which intersect to form an "L" shape. The first segment and the second segment of the "L"-shaped structure are located on adjacent sides of the floor 40 (e.g., two adjacent edges). Specifically, in one embodiment of this application, the first segment is located on one side of the first edge 41 and is spaced apart from the first edge 41, and the second segment is located on one side of the second edge 42 and is spaced apart from the second edge 42. Compared to a scheme where the first radiator 11 and the second radiator 21 are both located on the same side of the floor 40, the ground current generated by the first radiator 11 exciting the floor 40 and the ground current generated by the second radiator 11 exciting the floor 40 do not have a large area of ​​reversal. Therefore, in this embodiment, after connecting the decoupling circuit 30 between the first radiator 11 and the second radiator 21, the isolation between the first antenna 10 and the second antenna 20 is improved without significantly affecting the performance of the first antenna 10 or the second antenna 20. Furthermore, the first radiator 11 has an "L"-shaped structure, so the ground current generated by the first radiator 11 exciting the ground ground 40 and the ground current generated by the second radiator 21 exciting the ground ground 40 can intersect at a certain angle, instead of the excitation ground 40 generating two currents in opposite directions. This further improves the isolation between the first antenna 10 and the second antenna 20. In some embodiments of this application, the angle between the ground current generated by the first radiator 11 exciting the ground ground 40 and the ground current generated by the second radiator 21 exciting the ground ground 40 is in the range of 60-120° (e.g., orthogonal), thus achieving good isolation between the first antenna 10 and the second antenna 20. Moreover, in the embodiments of this application, the radiation patterns of the first antenna 10 and the second antenna 20 are complementary; therefore, the envelope correlation coefficient (ECC) between the first antenna 10 and the second antenna 20 can be relatively small.

[0100] In this embodiment, both the first radiator 11 and the second radiator 21 are L-shaped structures. The first radiator 11 includes intersecting first segments 11a and second segments 11b, and the second radiator 21 includes intersecting third segments 21a and fourth segments 21b. In this embodiment, the end of the first segment 11a away from the second segment 11b is the first end 111, and the end of the second segment 11b away from the first segment 11a is the second end 112. The end of the third segment 21a away from the fourth segment 21b is the third end 211, and the end of the fourth segment 21b away from the third segment 21a is the fourth end 212. In this embodiment, the first segment 11a and the third segment 21a are both located on one side of the first edge 41 of the floor 40, the second segment 11b is located on one side of the second edge 42 of the floor 40, and the fourth segment 21b is located on one side of the third edge 43 of the floor 40.

[0101] Please continue reading. Figure 3 , Figure 3 The arrows indicate the current radiation pattern generated when the antenna structure 100 of this embodiment is in operation. Arrow a shows the equivalent current direction of the ground current generated by the first radiator 11 exciting the ground floor 40, and arrow b shows the equivalent current direction of the ground current generated by the second radiator 21 exciting the ground floor 40. The equivalent current direction a of the ground current generated by the first radiator 11 exciting the ground floor 40 and the equivalent current direction b of the ground current generated by the second radiator 21 exciting the ground floor 40 intersect at a certain angle, for example, 60°-120°, 80°-10°, or 90°, thereby achieving good isolation between the first antenna 10 and the second antenna 20. For details, please refer to... Figure 7 , Figure 7 As shown Figure 3The diagram illustrates the return loss curve and isolation curve of the antenna structure 100 in the illustrated embodiment. Curve a represents the return loss curve of the first antenna 10, and curve b represents the return loss curve of the second antenna 20. The horizontal axis of curves a and b represents frequency in GHz, and the vertical axis represents the return loss coefficient in dB. Curve c represents the isolation curve between the first antenna 10 and the second antenna 20, with the horizontal axis representing frequency in GHz and the vertical axis representing the isolation coefficient in dB. In this embodiment, the first radiator 11 and the second radiator 21 have essentially the same structure, and are symmetrically arranged on both sides of the floor 40. Therefore, the operating frequency bands of the first antenna 10 and the second antenna 20 are essentially the same. In this embodiment, the length of the first edge 41 of the floor 40 is approximately 80 mm. To ensure that both the first radiator 11 and the second radiator 21 have an "L"-shaped structure, the first segment 11a of the first radiator 11 and the third segment 21a of the second radiator 21 are located on one side of the first edge 41 of the floor 40, the second segment 11b of the first radiator 11 is located on one side of the second edge 42 of the floor 40, and the fourth segment 21b of the second radiator 21 is located on one side of the third edge 43 of the floor 40. The radiating apertures of the first radiator 11 and the second radiator 21 are relatively large. In this embodiment, the operating frequency of the resonant signal generated by the first radiator 11 and the second radiator 21 is a low-frequency frequency in sub-6 GHz. In this embodiment, the center operating frequencies of both the first radiator 11 and the second radiator 21 are approximately 0.8 GHz. In this embodiment, 0.8 GHz is the decoupling frequency of the antenna structure 100 of this application. That is, the decoupling circuit 30 can prevent the coupling between the antenna mode generated by the first radiator 11 (operating frequency around 0.8 GHz) and the antenna mode generated by the second radiator 21 (operating frequency band around 0.8 GHz), thereby improving the isolation between the first antenna 10 and the second antenna 20. In this embodiment, the first antenna 10 and the second antenna 20 can serve as multiple-input multiple-output (MIMO) antennas for the electronic device 1000, enabling MIMO signal transmission. It is understood that in other embodiments of this application, the size of the ground plane 40 can be varied, as can the size and grounding position of the first radiator 11 and the second radiator 21. The operating frequencies of the first radiator 11 and the second radiator 21 can be the same or different. The radiating apertures of the first radiator 11 and the second radiator 21 can also be changed according to actual needs, so the operating frequency of the signal generated by the resonance of the first radiator 11 and the second radiator 21 can also be the intermediate frequency or high frequency in sub-6G.

[0102] In this embodiment, the isolation between the first antenna 10 and the second antenna 20 at the center operating frequency is approximately -15dB, meaning that the first antenna 10 and the second antenna 20 can have the same operating frequency band and good isolation between them.

[0103] In this embodiment, since the first segment 11a of the first radiator 11 and the third segment 21a of the second radiator 21 are both located on one side of the first edge 41 of the floor 40, the second segment 11b of the first radiator 11 is located on one side of the second edge 42 of the floor 40, and the fourth segment 21b of the second radiator 21 is located on one side of the third edge 43 of the floor 40, compared with the scheme where the first radiator 11 and the second radiator 21 are both located on one side of the floor 40, the first radiator 11 and the second radiator 21 can not only excite the floor 40 to generate a horizontal current mode, but also excite the floor 40 to generate a vertical current mode. Moreover, the vertical current modes generated by the first radiator 11 and the second radiator 21 in the floor 40 are in the same direction, which can improve the performance of the first antenna 10 and the second antenna 20. Since the first radiator 11 and the second radiator 21 can excite the ground plane 40 to generate not only a horizontal current mode in the opposite direction but also a vertical current mode in the same direction, the ground current can still be sufficiently excited even after the decoupling circuit 30 is connected between the first open end of the first radiator 11 and the second open end of the second radiator 21. Therefore, the antenna efficiency of the first antenna 10 and the second antenna 20 will not suffer a serious degradation. In the embodiments of this application, the decoupling circuit 30 is connected between the first open end of the first radiator 11 and the second open end of the second radiator 21 to improve the isolation between the first antenna 10 and the second antenna 20 without causing a serious degradation in their antenna efficiency. In the embodiments of this application, since the radiation patterns of the first antenna 10 and the second antenna 20 are complementary, the envelope correlation coefficient (ECC) between the first antenna 10 and the second antenna 20 in the embodiments of this application is better than that of a scheme where both the first radiator 11 and the second radiator 21 are located on one side of the ground plane 40.

[0104] For details, please refer to Figure 8 , Figure 8 for Figure 3 This diagram compares the efficiency of the first antenna 10 when the antenna structure 100 of the illustrated embodiment is in operation with the efficiency of the first antenna 10 when operating alone. Wherein, Figure 8 The horizontal axis represents frequency in GHz; the vertical axis represents efficiency in dBi. Figure 8 Curve a is the efficiency curve of the first antenna 10 of the antenna structure 100 in this embodiment. Figure 8Curve b represents the curve when the first antenna 10 operates alone. In this embodiment, the antenna efficiency of the first antenna 10 in the antenna structure 100 decreases by approximately 0.2 dB compared to when the first antenna 10 operates alone. In other words, in this embodiment, after connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20, the antenna efficiency of the first antenna 10 decreases by approximately 0.2 dB. Compared to a scheme where both the first radiator 11 and the second radiator 21 are located on the same side of the floor 40, in this embodiment, the decrease in efficiency of the first antenna 10 after connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20 is smaller. Please refer to... Figure 9 , Figure 9 for Figure 3 A comparison diagram showing the efficiency of the second antenna 20 when the antenna structure 100 of the illustrated embodiment is in operation, and the efficiency of the second antenna 20 when it is operating alone. Figure 9 The horizontal axis represents frequency in GHz; the vertical axis represents efficiency in dBi. Figure 9 Curve a is the efficiency curve of the second antenna 20 of the antenna structure 100 in this embodiment. Figure 9 Curve b represents the curve when the second antenna 20 operates alone. In this embodiment, the antenna efficiency of the second antenna 20 in the antenna structure 100 decreases by approximately 0.2 dB compared to when the second antenna 20 operates alone. In other words, in this embodiment, after connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20, the antenna efficiency of both the first antenna 10 and the second antenna 20 decreases by approximately 0.2 dB. However, compared to a scheme where the first radiator 11 and the second radiator 21 are both located on the same side of the floor 40, in this embodiment, the decrease in efficiency of both the first antenna 10 and the second antenna 20 after connecting the decoupling circuit 30 is relatively small. That is, in this embodiment, connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20 can improve the isolation between the first antenna 10 and the second antenna 20 while avoiding a significant impact on the operating efficiency of the first antenna 10 and the second antenna 20.

[0105] Please see Figure 10 and Figure 11 , Figure 10 As shown Figure 3 The radiation pattern of the first antenna 10 of the antenna structure 100 in the illustrated embodiment. Figure 11 As shown Figure 3The radiation pattern of the second antenna 20 of the antenna structure 100 in the illustrated embodiment is shown. In this embodiment, the radiation patterns of the first antenna 10 and the second antenna 20 are complementary. Therefore, the envelope correlation coefficient (ECC) between the first antenna 10 and the second antenna 20 in this embodiment is relatively good, with an ECC of approximately 0.06.

[0106] Please see Figure 12 , Figure 12 The diagram shows a topological structure of antenna structure 100 according to another embodiment of this application. In this embodiment, antenna structure 100 and... Figure 3 The difference in the antenna structure 100 shown is that, in this embodiment, both ends of the first radiator 11 and the second radiator 21 of the antenna structure 100 are open ends. Specifically, the first radiator 11 has a first open end and a third open end, and the second radiator 21 has a second open end and a fourth open end. In this embodiment, the first end 111 of the first radiator 11 is the first open end, and the second end 112 is the third open end. The third end 211 of the second radiator 21 is the second open end, and the fourth end 212 is the fourth open end. In other words, in this embodiment, neither the first end 111 nor the second end 112 of the first radiator 11 is connected to the ground plane 40, and neither the third end 211 nor the fourth end 212 of the second radiator 21 is connected to the ground plane 40. The definitions of open ends, first end 111, second end 112, third end 211, fourth end 212, and end faces can be referred to in the previous embodiments and will not be repeated here. In this embodiment, the decoupling circuit 30 is connected between the first open terminal and the second open terminal, that is, the decoupling circuit 30 connects the first end 111 of the first radiator 11 and the third end 211 of the second radiator 21. In this embodiment, there is a first grounding point A between the first end 111 and the second end 112 of the first radiator 11, and a second grounding point B between the third end 211 and the fourth end 212 of the second radiator 21. The first grounding point A and the second grounding point B are connected to the floor 40. That is, in this embodiment, the grounding point of the first radiator 11 is located between the first end 111 and the second end 112, and the grounding point of the second radiator 21 is located between the third end 211 and the fourth end 212.

[0107] In this embodiment, the first ground point A of the first radiator 11 and the section of the first radiator 11 between its first ground point A and the end face near the first end 111 can generate a quarter-wavelength mode resonance, and the section of the first radiator 11 between the end face near the first end 111 and the end face near the second end 112 can generate a half-wavelength mode resonance. In other words, the first radiator 11 in this embodiment can generate resonant signals with two different wavelength modes. Please refer to [link / reference]. Figure 12 , Figure 12 The dashed arrow near the first radiator 11 indicates the direction of the current when the first radiator 11 resonates in a 1 / 4 wavelength mode, and the dotted arrow indicates the direction of the current when the first radiator 11 resonates in a 1 / 2 wavelength mode. In this embodiment, the second radiator 21 and the first radiator 11 are symmetrically arranged on both sides of the floor 40. The section between the second ground point B of the second radiator 21 and the end face of the second radiator 21 near the third end 211 can generate a 1 / 4 wavelength mode resonance, and the resonant frequency band of the 1 / 4 wavelength mode generated by the second radiator 21 is substantially the same as the resonant frequency band of the 1 / 4 wavelength mode generated by the first radiator 11. Furthermore, in this embodiment, the section between the end face of the second radiator 21 near the third end 211 and the end face near the fourth end 212 can generate a 1 / 2 wavelength mode resonance, and the resonant frequency of the 1 / 2 wavelength mode generated by the second radiator 21 is substantially the same as the resonant frequency of the 1 / 2 wavelength mode generated by the first radiator 11. In other words, both the first antenna 10 and the second antenna 20 in this embodiment can form in-band dual resonances, and both the first antenna 10 and the second antenna 20 can generate quarter-wavelength mode resonances and half-wavelength mode resonances with essentially the same operating frequency, thereby improving the bandwidth and efficiency of the antenna structure 100 in this embodiment during antenna operation. Please refer to... Figure 12 , Figure 12The dashed arrow near the second radiator 12 indicates the direction of the current when the first radiator 11 resonates in a 1 / 4 wavelength mode, and the dotted-dash arrow indicates the direction of the current when the second radiator 12 resonates in a 1 / 2 wavelength mode. In this embodiment, the first radiator 11 and the second radiator 21 are described as having a "symmetrical structure," meaning that they are substantially symmetrical along a virtual axis of symmetry. Substantiality allows for certain angular and / or dimensional errors, rather than absolute symmetry in a strict mathematical sense. It is understood that in other embodiments of this application, the first radiator 11 and the second radiator 21 can also be asymmetrical structures. By adjusting the structure of the first radiator 11 or the second radiator 21, adding tuning elements, or changing the positions of the first grounding point A and the second grounding point B, the first radiator 11 and the second radiator 21 can generate different resonant modes. Alternatively, by adjusting the structure of the first radiator 11 and the second radiator 21, adding tuning elements, or changing the positions of the first grounding point A and the second grounding point B, it is also possible to make the first radiator 11 and the second radiator 21 produce two other identical resonance modes, thereby achieving in-band dual resonance between the first antenna 10 and the second antenna 20.

[0108] In this embodiment, the distance between the first open end of the first radiator 11 and the second open end of the second radiator 21 is about 20 mm, the inductance value of the decoupling circuit 30 is about 65 nH, and the first antenna 10 and the second antenna 20 have a good isolation effect.

[0109] In this embodiment, both the first antenna 10 and the second antenna 20 have two resonant modes, thus forming in-band dual resonance. Please refer to... Figure 13 , Figure 13 for Figure 12 The diagram illustrates the return loss curve and isolation curve of the antenna structure 100 according to the illustrated embodiment. Curve a represents the return loss curve of the first antenna 10, and curve b represents the return loss curve of the second antenna 20. The horizontal axis of curves a and b represents frequency in GHz, and the vertical axis represents the return loss coefficient in dB. Curve c represents the isolation curve between the first antenna 10 and the second antenna 20, with the horizontal axis representing frequency in GHz and the vertical axis representing the isolation coefficient in dB. Figure 13 As can be seen, in this embodiment, the operating frequency band of the 1 / 4 wavelength mode of the first antenna 10 is basically the same as that of the 1 / 4 wavelength mode of the second antenna 20, and the center operating frequency of both is about 0.81 GHz; the operating frequency band of the 1 / 2 wavelength mode of the first antenna 10 is basically the same as that of the 1 / 2 wavelength mode of the second antenna 20, and the center operating frequency of both is about 0.87 GHz.

[0110] In this embodiment, the isolation between the first antenna 10 and the second antenna 20 in the 1 / 4 wavelength mode at the center operating frequency is approximately -22 dB, and the isolation between the first antenna 10 and the second antenna 20 in the 1 / 2 wavelength mode at the center operating frequency is approximately -11 dB. That is, the first antenna 10 and the second antenna 20 have good isolation in both the 1 / 4 wavelength mode and the 1 / 2 wavelength mode.

[0111] In this embodiment, both the first antenna 10 and the second antenna 20 include two operating modes: a 1 / 4 wavelength mode and a 1 / 2 wavelength mode. It is understood that in other embodiments of this application, the first antenna 10 and the second antenna 20 may also operate in other modes. For example, in some embodiments, the first antenna 10 and the second antenna 20 may operate in a 3 / 4 wavelength mode, a composite left-handed antenna mode (CRLH antenna mode), etc. Furthermore, in other embodiments of this application, by adjusting the structure of the first antenna 10 and the second antenna 20, the first antenna 10 and the second antenna 20 can generate more operating modes. For example, in some embodiments, the first antenna 10 and the second antenna 20 can also generate three operating modes.

[0112] Please see Figure 14 , Figure 14 for Figure 12 The diagram shows a comparison between the antenna efficiency of the first antenna 10 when the antenna structure 100 is in operation and the antenna efficiency when the first antenna 10 is operating alone. Figure 14 The horizontal axis represents frequency in GHz; the vertical axis represents efficiency in dBi. Figure 14 The middle curve a is Figure 12 The efficiency curve of the first antenna 10 of the antenna structure 100 shown is illustrated. Figure 14Curve b represents the curve when the first antenna 10 operates alone. In this embodiment, the antenna efficiency of the first antenna 10 in the 1 / 4 wavelength mode of the antenna structure 100 decreases by approximately 0.8 dB compared to the antenna efficiency when the first antenna 10 operates alone in the 1 / 4 wavelength mode. In other words, in this embodiment, after connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20, the antenna efficiency of the first antenna 10 decreases by approximately 0.8 dB. Compared to a scheme where both the first radiator 11 and the second radiator 21 are located on the same side of the floor 40, in this embodiment, the decrease in efficiency of the first antenna 10 after connecting the decoupling circuit 30 is smaller. Similarly, in this embodiment, the decrease in efficiency of the second antenna 20 after connecting the decoupling circuit 30 is smaller. In this embodiment, a decoupling circuit 30 is connected between the first antenna 10 and the second antenna 20, which can improve the isolation between the first antenna 10 and the second antenna 20, while avoiding a significant impact on the working efficiency of the first antenna 10 and the second antenna 20.

[0113] Please see Figure 15 and Figure 16 , Figure 15 As shown Figure 12 The radiation pattern of the first antenna 10 of the antenna structure 100 shown is in 1 / 4 wavelength mode. Figure 16 As shown Figure 12 The radiation pattern of the second antenna 20 of the antenna structure 100 shown is in 1 / 4 wavelength mode. In this embodiment, the radiation pattern of the 1 / 4 wavelength mode radiation region of the first antenna 10 is complementary to the radiation pattern of the 1 / 4 wavelength mode radiation region of the second antenna 20. Therefore, the first antenna 10 and the second antenna 20 in this embodiment can have a small envelope correlation coefficient (ECC), which is approximately 0.001.

[0114] Please see Figure 17 , Figure 17 The diagram shown is a topological schematic of an antenna structure 100 according to another embodiment of this application. In this embodiment, the antenna structure 100 and... Figure 12 The difference between the antenna structure 100 shown is that, in this embodiment, the distance between the end face of the first radiator 11 near the second end 112 and the first grounding point A is less than [missing information]. Figure 12The distance between the end face of the first radiator 11 near the second end 112 and the first grounding point A in the illustrated embodiment. Furthermore, in this embodiment, no additional resonant mode is generated between the end face of the first radiator 11 near the second end 112 and the end face near the first end 111; that is, the first radiator 11 in this embodiment can only generate a 1 / 4 wavelength mode resonance, which is the resonance generated in the segment between the first grounding point A and the end face of the first radiator 11 near the first end 111. Similarly, in this embodiment, the distance between the end face of the second radiator 21 near the second end 212 and the second grounding point B is less than... Figure 12 The distance between the end face of the second radiator 21 near the second end 212 and the second grounding point B in the illustrated embodiment, and the distance between the end face of the second radiator 21 near the third end 211 and the end face of the second radiator 21 near the fourth end 212, will not generate another resonant mode. That is, the second radiator 21 in this embodiment can only generate a 1 / 4 wavelength mode resonance, which is the resonance generated in the segment between the second grounding point B of the second radiator 21 and the end face of the second radiator 21 near the third end 211. In other words, in this embodiment, both ends of the first radiator 11 and the second radiator 21 are open ends; however, both the first radiator 11 and the second radiator 21 in this embodiment can only generate a single wavelength mode resonance. The definitions of open end, first end 111, second end 112, third end 113, fourth end 114, and end face can be referred to the aforementioned embodiments and will not be repeated here.

[0115] In this embodiment, the distance between the first open end of the first radiator 11 and the second open end of the second radiator 21 is about 20 mm, the inductance value of the decoupling circuit 30 is about 70 nH, and the first antenna 10 and the second antenna 20 have a good isolation effect.

[0116] Please see Figure 18 , Figure 18 for Figure 17 The diagram shows the return loss curve and isolation curve of antenna structure 100. Curve a represents the return loss curve of the first antenna 10, and curve b represents the return loss curve of the second antenna 20. The horizontal axis of curves a and b represents frequency in GHz; the vertical axis represents the return loss coefficient in dB. Curve c represents the isolation curve between the first antenna 10 and the second antenna 20. The horizontal axis represents frequency in GHz; the vertical axis represents the isolation coefficient in dB. Figure 18As can be seen, in this embodiment, both the first antenna 10 and the second antenna 20 can only generate resonance in one operating mode. The operating frequency bands generated by the first antenna 10 and the second antenna 20 are basically the same, and the center operating frequency is approximately 0.81 GHz. In this embodiment, the isolation between the first antenna 10 and the second antenna 20 at the center operating frequency is approximately -26 dB, meaning that there is good isolation between the first antenna 10 and the second antenna 20.

[0117] Please see Figure 19 , Figure 19 for Figure 17 The diagram shows a comparison between the efficiency of the first antenna 10 when the antenna structure 100 is in operation and the efficiency of the first antenna 10 when it operates alone. Figure 17 The horizontal axis represents frequency in GHz; the vertical axis represents efficiency in dBi. Figure 19 Curve a is the efficiency curve of the first antenna 10 of the antenna structure 100 in this embodiment. Figure 19 Curve b in the diagram represents the efficiency of the first antenna 10 when operating alone. In this embodiment, the antenna efficiency of the first antenna 10 in the 1 / 4 wavelength mode is approximately 0.3 dB lower than the efficiency of the first antenna 10 operating alone in the 1 / 4 wavelength mode. In other words, in this embodiment, after connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20, the efficiency of the first antenna 10 in the 1 / 4 wavelength mode decreases by approximately 0.3 dB. Compared to a scheme where both the first radiator 11 and the second radiator 21 are located on the same side of the floor 40, in this embodiment, the decrease in efficiency of the first antenna 10 after connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20 is smaller. Please refer to... Figure 20 , Figure 20 for Figure 17 The diagram shows a comparison of the efficiency of the second antenna 20 when the antenna structure 100 is in operation with the efficiency of the second antenna 20 when it is operating alone. Figure 20 The horizontal axis represents frequency in GHz; the vertical axis represents efficiency in dBi. Figure 20 Curve a is the efficiency curve of the second antenna 20 of the antenna structure 100 in this embodiment. Figure 20Curve b represents the curve when the second antenna 20 operates alone. In this embodiment, the antenna efficiency of the second antenna 20 in the 1 / 4 wavelength mode of the antenna structure 100 decreases by approximately 0.3 dB compared to the antenna efficiency of the second antenna 20 operating alone in the 1 / 4 wavelength mode. In other words, in this embodiment, after connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20, the operating efficiency of both the first antenna 10 and the second antenna 20 in the 1 / 4 wavelength mode decreases by approximately 0.3 dB. However, compared to a scheme where both the first radiator 11 and the second radiator 21 are located on the same side of the floor 40, in this embodiment, the decrease in operating efficiency of both the first antenna 10 and the second antenna 20 after connecting the decoupling circuit 30 is relatively small. That is, in this embodiment, connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20 can improve the isolation between the first antenna 10 and the second antenna 20 while avoiding a significant impact on the operating efficiency of the first antenna 10 and the second antenna 20.

[0118] Please see Figure 21 and Figure 22 , Figure 21 As shown Figure 17 The radiation pattern of the first antenna 10 of the antenna structure 100 in the illustrated embodiment. Figure 22 As shown Figure 17 The radiation pattern of the second antenna 20 of the antenna structure 100 in the illustrated embodiment is shown. In this embodiment, the radiation pattern of the first antenna 10 is complementary to the radiation pattern of the second antenna 20. Therefore, the envelope correlation coefficient (ECC) between the first antenna 10 and the second antenna 20 in this embodiment is relatively good, with an ECC of approximately 0.11.

[0119] Please see Figure 23 , Figure 23 The diagram shown is a structural schematic of an antenna structure 100 according to another embodiment of this application. Figure 23 The implementation methods shown are the same as Figure 3 The difference between the antenna structure 100 shown in the embodiment is that, in this embodiment, the size of the first edge 41 of the ground plane 40 is larger than that of the antenna structure 100 shown in the embodiment. Figure 3 In the illustrated embodiment, the first edge 41 of the floor 40 is relatively narrow. Therefore, when the first radiator 11 and the second radiator 21 are of an "L" shape, their electrical lengths can be designed to be smaller, allowing the first antenna 10 and the second antenna 20 to operate in the intermediate frequency band or high frequency band, such as the intermediate frequency band or high frequency band in the sub-6 GHz band. In this embodiment, the first edge 41 of the floor 40 is approximately 30 mm.

[0120] In this embodiment, the inductance value of the decoupling circuit 30 is approximately 20nH, providing good isolation between the first antenna 10 and the second antenna 20. Please refer to... Figure 24 , Figure 24 for Figure 23 The diagram shows the return loss and isolation curves of antenna structure 100. Curve a represents the return loss curve of the first antenna 10, and curve b represents the return loss curve of the second antenna 20. The horizontal axis of curves a and b represents frequency in GHz; the vertical axis represents the return loss coefficient in dB. Curve c represents the isolation curve between the first antenna 10 and the second antenna 20, with the horizontal axis representing frequency in GHz and the vertical axis representing the isolation coefficient in dB. Figure 24 As can be seen, in this embodiment, the operating frequency bands of the first antenna 10 and the second antenna 20 are basically the same, and their center operating frequencies are both approximately 2GHz, meaning that the operating frequency bands of the first antenna 10 and the second antenna 20 are at a high frequency. In this embodiment, the isolation between the first antenna 10 and the second antenna 20 at the center operating frequency is approximately -15dB, meaning that there is good isolation between the first antenna 10 and the second antenna 20.

[0121] Please see Figure 25 , Figure 25 for Figure 23 The diagram shows a comparison between the antenna efficiency of the first antenna 10 when the antenna structure 100 is in operation and the antenna efficiency when the first antenna 10 is operating alone. Figure 25 The horizontal axis represents frequency in GHz; the vertical axis represents efficiency in dBi. Figure 25 The middle curve a is Figure 23 The efficiency curve of the first antenna 10 of the antenna structure 100 shown is illustrated. Figure 25Curve b represents the curve when the first antenna 10 operates alone. In this embodiment, the antenna efficiency of the first antenna 10 in the antenna structure 100 decreases by approximately 0.5 dB compared to its operating mode when operating alone. In other words, in this embodiment, after connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20, the antenna efficiency of the first antenna 10 decreases by approximately 0.5 dB. Compared to a scheme where both the first radiator 11 and the second radiator 21 are located on the same side of the floor 40, the decrease in efficiency of the first antenna 10 is smaller in this embodiment after connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20. Similarly, in this embodiment, the decrease in efficiency of the second antenna 20 is also relatively small after connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20. In this embodiment, a decoupling circuit 30 is connected between the first antenna 10 and the second antenna 20, which can improve the isolation between the first antenna 10 and the second antenna 20, while avoiding a significant impact on the working efficiency of the first antenna 10 and the second antenna 20.

[0122] Please see Figure 26 and Figure 27 , Figure 26 As shown Figure 23 The radiation pattern of the first antenna 10 of the antenna structure 100 in the illustrated embodiment. Figure 27 As shown Figure 23 The radiation pattern of the second antenna 20 of the antenna structure 100 in the illustrated embodiment is shown. In this embodiment, the radiation pattern of the first antenna 10 is complementary to that of the second antenna 20. Therefore, the envelope correlation coefficient (ECC) between the first antenna 10 and the second antenna 20 in this embodiment is relatively good, with an ECC of approximately 0.01.

[0123] Please see Figure 28 , Figure 28 The diagram shown is a structural schematic of an antenna structure 100 according to another embodiment of this application. Figure 28 The implementation methods shown are the same as Figure 12The difference in the illustrated embodiment is that, in this embodiment, only the first radiator 11 has an "L"-shaped structure, while the second radiator 21 has a linear structure. The first segment 11a of the first radiator 11 is located on one side of the first edge 41, and the second segment 11b of the first radiator 11 is located on one side of the second edge 42. The second radiator 21 is also located on one side of the second edge 42. It is understood that in some other embodiments of this application, the second radiator 21 may also have an "L"-shaped structure, and the first radiator 11 may have a linear structure. In this embodiment, the first radiator 11 includes a first end 111 and a second end 112. The first end 111 is located at the end of the first segment 11a of the first radiator 11 away from the second segment 11b, and the second end 112 is located at the end of the second segment 11b of the first radiator 11 away from the first segment 11a. The second radiator 21 includes a third end 211 and a fourth end 212 disposed opposite to each other. The third end 211 is closer to the first radiator 11 than the fourth end 212. The first end 111 and the second end 112 of the first radiator 11 are both open ends, the third end 211 of the second radiator 21 is an open end, and the fourth end 212 of the second radiator 21 is connected to the floor 40. The definitions of open end, first end 111, second end 112, third end 211, fourth end 212, and end face can be referred to the previous embodiments, and will not be repeated here. In this embodiment, the second end 112 of the first radiator 11 is the first open end of the first radiator 11, and the first end 111 of the first radiator 11 is the third open end of the first radiator 11. The third end 211 of the second radiator 21 is the second open end. The second end 112 of the first radiator 11 and the third end 211 of the second radiator 21 are opposite to each other and form a gap 13. The decoupling circuit 30 connects the second end 112 of the first radiator 11 and the third end 211 of the second radiator 21.

[0124] It is understood that in other embodiments of this application, the first radiator 11 may have only one open end, and the second radiator 21 may have two open ends. For example, please refer to... Figure 29 , Figure 29 The diagram shown is a structural schematic of an antenna structure 100 according to another embodiment of this application. The antenna structure 100 of this embodiment is similar to... Figure 28The structural difference of the antenna structure 100 shown is that, in this embodiment, the first radiator 11 includes only one open end, while the second radiator 21 includes two open ends. Specifically, the second end 112 of the first radiator 11 is the first open end of the first radiator 11, and the first end 111 of the first radiator 11 is connected to the ground plane 40. The third end 211 and the fourth end 212 of the second radiator 21 are both open ends, wherein the third end 211 of the second radiator 21 is the second open end, and the fourth end 212 is the fourth open end. The end face of the first radiator 11 near the second end 112 is opposite to the end face of the second radiator 21 near the third end 211, forming a gap 13. The decoupling circuit 30 connects the second end 112 of the first radiator 11 and the third end 211 of the second radiator 21.

[0125] Please refer to the previous document. Figure 28 , Figure 28 The dashed arrow near the first radiator 11 indicates the direction of the current when the first radiator 11 resonates in a 1 / 4 wavelength mode. Figure 28 The direction of the dotted arrow near the first radiator 11 is the schematic direction of the current when the first radiator 11 generates a 1 / 2 wavelength mode resonance. Figure 28 In the illustrated embodiment, the section from the first ground point A of the first radiator 11 to the end face of the first radiator 11 near the first end 111 can generate a 1 / 4 wavelength mode resonance, and the section of the first radiator 11 from the end face near the first end 111 to the end face near the second end 112 can generate a 1 / 2 wavelength mode resonance. In other words, the first radiator 11 in this embodiment can generate resonant signals with two different wavelength modes. In this embodiment, the section of the second radiator 21 from the end face near the third end 211 to the end face near the fourth end 212 (i.e., the second radiator 21) can also generate a 1 / 4 wavelength mode resonance, and the 1 / 4 wavelength mode resonance generated by the second radiator 21 in this embodiment operates in the same frequency band as the 1 / 4 wavelength mode resonance generated by the first radiator 11.

[0126] Please see Figure 30 , Figure 30 for Figure 28 The diagram shows the return loss and isolation curves of antenna structure 100. Curve a represents the return loss curve of the first antenna 10, and curve b represents the return loss curve of the second antenna 20. The horizontal axis of curves a and b represents frequency in GHz; the vertical axis represents the return loss coefficient in dB. Curve c represents the isolation curve between the first antenna 10 and the second antenna 20, with the horizontal axis representing frequency in GHz and the vertical axis representing the isolation coefficient in dB. Figure 30As can be seen, in this embodiment, the operating frequency band of the first antenna 10 in 1 / 4 wavelength mode is basically the same as that of the second antenna 20, and the center operating frequency of both is approximately 0.81 GHz. In this embodiment, the isolation between the first antenna 10 and the second antenna 20 at the center operating frequency in 1 / 4 wavelength mode is approximately -15 dB, meaning that there is good isolation between the first antenna 10 and the second antenna 20.

[0127] Please see Figure 31 , Figure 31 for Figure 28 The antenna efficiency diagrams for the first antenna 10 and the second antenna 20 of the antenna structure 100 are shown. Figure 31 The horizontal axis represents frequency in GHz; the vertical axis represents efficiency in dBi. Figure 31 The middle curve a is Figure 28 The efficiency curve of the first antenna 10 of the antenna structure 100 in the free state is shown. Figure 31 Curve b in the diagram represents the efficiency of the second antenna 20 of antenna structure 100 in its free state. In this embodiment, the operating efficiency of the first antenna 10 in its free state is approximately -4 dBi, and the operating efficiency of the second antenna 20 in its free state is less than -3.3 dBi. In other words, both the first antenna 10 and the second antenna 20 in this embodiment exhibit good operating efficiency.

[0128] Please see Figure 32 , Figure 32 for Figure 28 The diagram shows a comparison between the antenna efficiency of the first antenna 10 when the antenna structure 100 is in operation and the antenna efficiency when the first antenna 10 is operating alone. Figure 32 The horizontal axis represents frequency in GHz; the vertical axis represents efficiency in dBi. Figure 32 Curve a is the efficiency curve of the first antenna 10 of the antenna structure 100 in this embodiment. Figure 32 Curve b represents the curve when the first antenna 10 operates alone. In this embodiment, the antenna efficiency of the first antenna 10 in the antenna structure 100 decreases by approximately 0.5 dB compared to when the first antenna 10 operates alone. In other words, in this embodiment, after connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20, the antenna efficiency of the first antenna 10 decreases by approximately 0.5 dB. Compared to a scheme where both the first radiator 11 and the second radiator 21 are located on the same side of the floor 40, in this embodiment, the decrease in efficiency of the first antenna 10 after connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20 is smaller. Please refer to... Figure 33 , Figure 33 for Figure 28 A comparison diagram of the antenna efficiency of the second antenna 20 of the antenna structure 100 when the second antenna 20 operates alone. Figure 33 The horizontal axis represents frequency in GHz; the vertical axis represents efficiency in dBi. Figure 33 Curve a is the efficiency curve of the second antenna 20 of the antenna structure 100 in this embodiment. Figure 33 Curve b represents the curve when the second antenna 20 operates alone. In this embodiment, the antenna efficiency of the second antenna 20 in the antenna structure 100 decreases by approximately 1 dB compared to the antenna efficiency when the second antenna 20 operates alone. In other words, compared to an antenna structure where both the first radiator 11 and the second radiator 21 are located on the same side of the floor 40, in this embodiment, after connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20, the decrease in the operating efficiency of both the first antenna 10 and the second antenna 20 is smaller. That is, in this embodiment, connecting the decoupling circuit 30 between the first antenna 10 and the second antenna 20 can improve the isolation between the first antenna 10 and the second antenna 20, while avoiding a significant impact on the operating efficiency of both the first antenna 10 and the second antenna 20.

[0129] Please see Figure 34 and Figure 35 , Figure 34 As shown Figure 28 The radiation pattern of the first antenna 10 of the antenna structure 100 in the illustrated embodiment when operating in 1 / 4 wavelength mode. Figure 35 As shown Figure 28 The radiation pattern of the second antenna 20 of the antenna structure 100 in the illustrated embodiment is shown. In this embodiment, the radiation pattern of the first antenna 10 operating in 1 / 4 wavelength mode is complementary to the radiation pattern of the second antenna 20. Therefore, the envelope correlation coefficient (ECC) between the first antenna 10 and the second antenna 20 in this embodiment is relatively good, with an ECC of approximately 0.15.

[0130] In this embodiment of the application, the first antenna 10 and the second antenna 20 can be used as a multiple-input multiple-output (MIMO) system of the electronic device 1000, and the first antenna 10 and the second antenna 20 can also be used as the main antenna and the diversity antenna of the electronic device 1000, respectively.

[0131] Please see Figure 36 , Figure 36 The diagram shown is a structural schematic of an antenna structure 100 according to another embodiment of this application. Figure 36 The implementation methods shown are the same as Figure 28The difference in the illustrated implementation is that, in this embodiment, both the first radiator 11 and the second radiator 21 include an open terminal, and both the first radiator 11 and the second radiator 21 are capable of generating two different operating modes. Furthermore, in this embodiment, the decoupling filter circuit 30 is an inductive decoupling circuit. When the first radiator 11 and the second radiator 21 switch to different operating frequencies, the decoupling filter circuit 30 can also exhibit different magnitudes of decoupling inductance.

[0132] In this embodiment, the first end 111 of the first radiator 11 is connected to the floor 40, and the second end 112 is an open end; the third end 211 of the second radiator 21 is an open end, and the fourth end 212 of the second radiator 21 is connected to the floor 40. The second end 112 of the first radiator 11 and the third end 211 of the second radiator 21 are opposite to each other and form a gap 13. The decoupling circuit 30 is connected between the second end 112 of the first radiator 11 and the third end 211 of the second radiator 21.

[0133] In this embodiment, the decoupling circuit 30 is Figure 6b The decoupling circuit shown is inductive. Specifically, the inductance of the first inductor 31a is approximately 29nH, the inductance of the second inductor 31b is approximately 15nH, the inductance of the third inductor 31c is approximately 72nH, the capacitance of the capacitor 33 is approximately 0.6pF, and the equivalent inductance of the filter circuit is approximately 6.2nH, which is different from the inductance of the third inductor 31c.

[0134] In this embodiment, both the first radiator 11 and the second radiator 21 are capable of generating two operating modes. Figure 36 The dashed arrows near the first radiator 11 and the second radiator 21 indicate the direction of the current when the first radiator 11 and the second radiator 21 resonate in a 1 / 4 wavelength mode. Figure 36 The direction of the dotted arrows near the first radiator 11 and the second radiator 21 is a schematic direction of the current when the first radiator 11 and the second radiator 21 resonate in a 1 / 2 wavelength mode. Figure 36In the illustrated embodiment, the section from the first feed point C of the first radiator 11 to the end face of the first radiator 11 near the second end 112 can generate a quarter-wavelength mode resonance, and the section from the end face of the first radiator 11 near the first end 111 to the end face of the first end 112 can generate a half-wavelength mode resonance. In other words, the first radiator 11 in this embodiment can generate resonant signals with two different wavelength modes. In this embodiment, the section from the second feed point D of the second radiator 21 to the end face of the second radiator 11 near the third end 113 can generate a quarter-wavelength mode resonance, and the operating frequency band of the quarter-wavelength mode resonance generated by the second radiator 21 in this embodiment is substantially the same as that of the quarter-wavelength mode resonance generated by the first radiator 11. The second radiator 21 can also generate a 1 / 2 wavelength mode resonance in the section between the end face near the fourth end 212 and the end face near the third end 213. Furthermore, the 1 / 2 wavelength mode resonance generated by the second radiator 21 in this embodiment has a basically the same operating frequency band as the 1 / 2 wavelength mode resonance generated by the first radiator 11.

[0135] Please see Figure 37 , Figure 37 for Figure 36 The diagram shows the return loss and isolation curves of antenna structure 100. Curve a represents the return loss curve of the first antenna 10, and curve b represents the return loss curve of the second antenna 20. The horizontal axis of curves a and b represents frequency in GHz; the vertical axis represents the return loss coefficient in dB. Curve c represents the isolation curve between the first antenna 10 and the second antenna 20, with the horizontal axis representing frequency in GHz and the vertical axis representing the isolation coefficient in dB. Figure 37 As can be seen, in this embodiment, the operating frequency band of the first antenna 10 in 1 / 4 wavelength mode is basically the same as that of the second antenna 20 in 1 / 4 wavelength mode, and the center operating frequency of both is approximately 2.5 GHz. The operating frequency band of the first antenna 10 in 1 / 2 wavelength mode is basically the same as that of the second antenna 20 in 1 / 2 wavelength mode, and the center operating frequency of both is approximately 0.85 GHz.

[0136] In this embodiment, when both the first antenna 10 and the second antenna 20 operate in 1 / 4 wavelength mode, their operating frequencies are relatively high, approximately 2.5 GHz, making them suitable for the 2.4 GHz Wi-Fi or N41 operating frequency bands. At this time, the decoupling frequency of the antenna module 100 is approximately 2.5 GHz, allowing the signal from the first radiator 11 to be transmitted to the second radiator 21. This is equivalent to the inductance between the first open terminal of the first radiator 11 and the second open terminal of the second radiator 21 being equal to the equivalent inductance of the filter circuit (approximately 6.2 nH), thus ensuring good isolation between the first antenna 10 and the second antenna 20 in 1 / 4 wavelength mode. Specifically, in this embodiment, the isolation between the first antenna 10 and the second antenna 20 in 1 / 4 wavelength mode is approximately -13 dB.

[0137] When both the first antenna 10 and the second antenna 20 operate in half-wavelength mode, their operating frequencies are relatively low, approximately 0.85 GHz. In this case, the decoupling frequency of the antenna module 100 is approximately 0.85 GHz, effectively turning the filter circuit into an open circuit. This is equivalent to connecting a third inductor 31c (approximately 72 nH) between the first open terminal of the first radiator 11 and the second open terminal of the second radiator 21, thereby ensuring good isolation between the first antenna 10 and the second antenna 20 in half-wavelength mode. Specifically, in this embodiment, the isolation between the first antenna 10 and the second antenna 20 in half-wavelength mode is approximately -13 dB.

[0138] In this embodiment, by connecting an inductive decoupling circuit 30 between the first open terminal of the first radiator 11 and the second open terminal of the second radiator 21, it is ensured that when the operating frequencies of the first radiator 11 and the second radiator 21 change, the inductance value of the equivalent inductance connected between the first open terminal of the first radiator 11 and the second open terminal of the second radiator 21 can change accordingly, so as to ensure that the first antenna 10 and the second antenna 20 can always maintain a good degree of isolation.

[0139] Please see Figure 38 , Figure 38 for Figure 36 The antenna efficiency diagrams for the first antenna 10 and the second antenna 20 of the antenna structure 100 are shown. Figure 38 The horizontal axis represents frequency in GHz; the vertical axis represents efficiency in dBi. Figure 38 The middle curve a is Figure 36 The efficiency curve of the first antenna 10 of the antenna structure 100 in the free state is shown. Figure 38Curve b in the diagram represents the efficiency of the second antenna 20 of antenna structure 100 in its free state. In this embodiment, the operating efficiency of the first antenna 10 in its free state is less than -3.8 dBi, and the operating efficiency of the second antenna 20 in its free state is less than -4.7 dBi. In other words, both the first antenna 10 and the second antenna 20 in this embodiment exhibit good operating efficiency.

[0140] In some embodiments of this application, one of the first radiator 11 and the second radiator 21 includes a first sub-radiator and a second sub-radiator spaced apart. The entire first sub-radiator is located on one side of the second sub-radiator, and the entire other radiator is located on the other side of the second sub-radiator. The end of the second sub-radiator away from the first sub-radiator is the open end of the first radiator 11 or the second radiator 21, and one end of the coupling circuit is connected to the end of the second sub-radiator away from the first sub-radiator. Furthermore, the second sub-radiator is not grounded, and the grounding point of the first radiator 11 or the second radiator 21 is located on the first sub-radiator. In this embodiment of the application, the first radiator 11 or the second radiator 21 includes a first sub-radiator and a second sub-radiator spaced apart. When the electronic device 1000 is used, the user's hand or other structure blocks the gap 13 between the first radiator 11 and the second radiator 21. Thus, when the user's hand or other structure connects the open end of the first radiator 11 to the open end of the second radiator 21, the isolation between the first antenna 10 and the second antenna 20 will not deteriorate drastically.

[0141] For example, please see Figure 39 , Figure 39 The diagram shown is a structural schematic of an antenna structure 100 according to another embodiment of this application. Figure 39 The implementation methods shown are the same as Figure 3The difference in the illustrated embodiment is that, in this embodiment, the first radiator 11 includes a first sub-radiator 113 and a second sub-radiator 114 spaced apart, wherein the second sub-radiator 114 is closer to the second radiator 21 relative to the first sub-radiator 113, and the first sub-radiator 113 and the second sub-radiator 114 can be coupled to each other. The first sub-radiator 113 and the second sub-radiator 114 are located on both sides of the gap 14. In this embodiment, the grounding position A and the power supply position of the first radiator 11 are both located on the first sub-radiator 113. In this embodiment, the end of the second sub-radiator 114 away from the first sub-radiator 113 is the first open end of the first radiator 11. One end of the band-coupled circuit 30 in this embodiment is connected to the second sub-radiator 114, and the other end is connected to the second radiator 21. In this embodiment, both the first radiator 11 and the second radiator 21 have an "L"-shaped structure. A portion of the first segment 11a of the first radiator 11 forms the second sub-radiator 114, and portions of the first segment 11a and the second segment 11b of the first radiator 11 form the first sub-radiator 113. In this embodiment, the first sub-radiator 113 and the second radiator 21 have symmetrical structures and are symmetrically arranged on opposite sides of the floor 40. Specifically, in this embodiment, the first sub-radiator 113 of the first radiator 11 has the same structure as the second radiator 21 (including the same shape and size), and the second segment 11b of the first radiator 11 and the fourth segment 21b of the second radiator 21 are respectively disposed on one side of the second edge 42 and one side of the third edge 43 of the floor 40. A portion of the first segment 11a of the first sub-radiator 113, the second sub-radiator 114, and the fourth segment 21b of the second radiator 21 are all disposed on one side of the first edge 41 of the floor 40. In the embodiments of this application, the term "symmetrical structure" for the first sub-radiator 113 and the second radiator 21 means that the first sub-radiator 113 and the second radiator 21 are substantially symmetrical along a virtual axis of symmetry. Substantial symmetry allows for certain angular and / or dimensional errors, rather than absolute symmetry in a strict mathematical sense. Please refer to [link to relevant documentation]. Figure 40 , Figure 40 for Figure 39 The diagram shows the return loss curve and isolation curve of antenna structure 100. Curve a represents the return loss curve of the first antenna 10, and curve b represents the return loss curve of the second antenna 20. The horizontal axis of curves a and b represents frequency in GHz; the vertical axis represents the return loss coefficient in dB. Curve c represents the isolation curve between the first antenna 10 and the second antenna 20. The horizontal axis represents frequency in GHz; the vertical axis represents the isolation coefficient in dB. Figure 40As can be seen, in this embodiment, the operating frequency band of the first antenna 10 is basically the same as that of the second antenna 20, and the center operating frequency of both is approximately 0.8 GHz. In this embodiment, the isolation between the first antenna 10 and the second antenna 20 at the center operating frequency is approximately -21 dB, that is, the first antenna 10 and the second antenna 20 have good isolation.

[0142] Please see Figure 41 , Figure 41 for Figure 39 The antenna efficiency diagrams of the first antenna 10 and the second antenna 20 in the free state of the antenna structure 100 are shown. Figure 41 The horizontal axis represents frequency in GHz; the vertical axis represents efficiency in dBi. Figure 41 The middle curve a is Figure 12 The efficiency curve of the first antenna 10 of the antenna structure 100 in the free state is shown. Figure 41 Curve b in the diagram represents the efficiency of the second antenna 20 in the free state of the first antenna 10. In this embodiment, the operating efficiency of the first antenna 10 in the free state is less than -5.6 dBi, and the operating efficiency of the second antenna 20 in the free state is less than -7.4 dBi. In other words, in this embodiment, both the first antenna 10 and the second antenna 20 in the free state of the antenna structure 100 exhibit good operating efficiency.

[0143] Please see Figure 42 and Figure 43 , Figure 42 To cover Figure 39 When the gap 13 between the first radiator 11 and the second radiator 21 of the antenna structure 100 shown is 13, the return loss curve and the isolation curve of the antenna structure 100 of this embodiment are shown. Figure 43 To cover Figure 39 When the gap 14 is between the first sub-radiator 113 and the second sub-radiator 114 of the first radiator 11 of the antenna structure 100 shown, the return loss curve and isolation curve of the antenna structure 100 of this embodiment are displayed. Figure 42 and Figure 43 Curve a in the figure is the return loss curve of the first antenna 10. Figure 42 and Figure 43 Curve b in the figure is the return loss curve of the second antenna 20. The horizontal axis of curves a and b represents the frequency in GHz, and the vertical axis represents the return loss coefficient in dB. Figure 42 and Figure 43Curve c in the figure represents the isolation curve between the first antenna 10 and the second antenna 20. The horizontal axis represents frequency in GHz, and the vertical axis represents the isolation coefficient in dB. In this embodiment, when the gap 13 between the first radiator 11 and the second radiator 21 is blocked by the user's hand or other structure, the second antenna 20 will experience a frequency shift, and the isolation between the first antenna 10 and the second antenna 20 can be approximately -15 dB; when the gap 14 between the first sub-radiator 113 and the second sub-radiator 114 of the first radiator 11 is blocked by the user's hand or other structure, the first antenna 10 will experience a frequency shift, and the isolation between the first antenna 10 and the second antenna 20 can be approximately -12.5 dB. Compared to blocking... Figure 3 In the embodiment shown, when the gap 13 between the first radiator 11 and the second radiator 21 is only about -6dB, the isolation between the first antenna 10 and the second antenna 20 is only about -6dB. In this embodiment, by setting the first antenna 10 to include a first sub-radiator 113 and a second sub-radiator 114 spaced apart, the decrease in the isolation between the first antenna 10 and the second antenna 20 can be mitigated when the gap 14 between the first sub-radiator 113 and the second sub-radiator 114 of the first radiator 11 or the gap 13 between the first radiator 11 and the second radiator 21 is blocked by the user's hand or other structures, thus ensuring that the first antenna 10 and the second antenna 20 can always have a good isolation.

[0144] In some embodiments of this application, the electrical length of the second sub-radiator 114 is less than 1 / 4 of the wavelength of the decoupling frequency band of the antenna structure 100, thereby avoiding the second sub-radiator 11 from being too long and affecting the arrangement of the first sub-radiator 113 and the second radiator 21, ensuring that at least one of the first sub-radiator 113 and the second radiator 21 can be an "L"-shaped structure. In this embodiment, the decoupling frequency band is the same operating frequency band of the first radiator 11 and the second radiator 21 or an operating frequency band that differs by less than 1 GHz. In this embodiment, the operating frequency bands of the first radiator 11 and the second radiator 21 are both 0.8 GHz, that is, the decoupling frequency band of the antenna structure 100 in this embodiment is 0.8 GHz, and the electrical length of the second sub-radiator 114 is less than 1 / 4 of the wavelength of the antenna mode with an operating frequency of 0.8 GHz.

[0145] It should be noted that, in the embodiments of this application, Figure 39 and and Figure 3 The differences can also be applied to the foregoing embodiments. In other words, the present application's... Figures 3 to 39 The first radiator 11 or the second radiator 21 of the antenna structure 100 in the illustrated embodiment can also be configured to include a first sub-radiator 113 and a second sub-radiator 114.

[0146] In other embodiments of this application, a feed point may be provided on the second sub-radiator 114 located between the first sub-radiator 113 and the second radiator 21. The radio frequency front-end 140 can be connected to the feed point to feed the second sub-radiator 114, enabling the second sub-radiator 114 to radiate signals as a separate radiating stub, thus increasing the antenna's operating modes. For example, please refer to... Figure 44 , Figure 44 The diagram shown is a structural schematic of an antenna structure 100 according to another embodiment of this application. The antenna structure 100 in this embodiment is similar to... Figure 39 The difference in the antenna structure 100 shown is that, in this embodiment, the second sub-radiator 114 is provided with a feed point E, and the radio frequency front end 140 is connected to the feed points on the first sub-radiator 113, the second sub-radiator 114 and the second radiator 21 to feed the first sub-radiator 113, the second sub-radiator 114 and the second radiator 21, so that the first sub-radiator 113 and the second radiator 21 can generate a low-frequency operating band (e.g., a low-frequency band in sub-6G), and the second sub-radiator 114 can generate a high-frequency operating band (e.g., a high-frequency band in sub-6G).

[0147] In this application, by providing a decoupling circuit 30 between the first open end of the first radiator 11 and the second open end of the second radiator 21, the isolation between the first antenna 10 and the second antenna 20 can be improved. Furthermore, at least one of the first radiator 11 and the second radiator 21 has an "L"-shaped structure, and the first and second segments of the "L"-shaped first radiator 11 or second radiator 21 are located on adjacent sides of the floor 40 (e.g., one side of the first edge 41 and one side of the second edge 42, or one side of the first edge 41 and one side of the third edge 43), which can further improve the isolation between the first antenna 10 and the second antenna 20, reduce the envelope correlation coefficient between the first antenna 10 and the second antenna 20, and mitigate the impact of connecting the decoupling circuit 30 between the first open end of the first radiator 11 and the second open end of the second radiator 21 on the operating efficiency of the first antenna 10 and the second antenna 20. Furthermore, in some embodiments, the first radiator 11 or the second radiator 21 is configured to include a first sub-radiator 113 and a second sub-radiator 114 spaced apart, thereby avoiding the problem that the isolation between the first antenna 10 and the second antenna 20 will be greatly reduced when the user's hand or other structure blocks the gap 13 between the first radiator 11 and the second radiator 21.

[0148] The above description represents the preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. An antenna structure, characterized in that, Includes a first radiator, a second radiator, a floor, and a decoupling circuit; The floor includes a second edge, a first edge, and a third edge that are sequentially adjacent and intersecting; The first radiator includes an intersecting first segment and a second segment. The first segment is located on one side of the first edge of the floor and is spaced apart from the first edge. The second segment is located on one side of the second edge of the floor and is spaced apart from the second edge. The first radiator is provided with a first feed point. The second radiator includes intersecting third and fourth segments, the third segment being located on one side of the first edge and the fourth segment being located on one side of the third edge. The second radiator is provided with a second feed point. The first segment of the first radiator includes a first open end, and the third segment of the second radiator includes a second open end. A gap is formed between the first open end and the second open end. The entire first radiator is located on one side of the gap, and the entire second radiator is located on the other side of the gap. The gap is used to form an equivalent capacitance. The decoupling circuit connects the first open terminal and the second open terminal; The first radiator or one of the second radiators includes a first sub-radiator and a second sub-radiator spaced apart. The entire first sub-radiator is located on one side of the second sub-radiator, and the entire first radiator or the other radiator is located on the other side of the second sub-radiator. The first sub-radiator is coupled to the second sub-radiator. The end of the second sub-radiator away from the first sub-radiator is the first open end or the second open end. The first feed point is located on the first sub-radiator.

2. The antenna structure as described in claim 1, characterized in that, The first segment and the second segment intersect in an L-shaped structure, the third segment and the fourth segment intersect in an L-shaped structure, and the angle between the ground current generated by the first radiator exciting the floor and the ground current generated by the second radiator exciting the floor is in the range of 60-120°.

3. The antenna structure as described in claim 2, characterized in that, The end of the first radiator includes a first end and a second end. The first end is the end of the first segment of the first radiator that is away from the second segment, and the second end is the end of the second segment of the first radiator that is away from the first segment. The first end is the first open end, and the second end is connected to the floor, or the second end is the third open end of the first radiator.

4. The antenna structure as described in claim 3, characterized in that, The end of the second radiator includes a third end and a fourth end, wherein the third end is the end of the first section of the second radiator that is away from the second section of the second radiator, and the fourth end is the end of the second section of the second radiator that is away from the first section of the second radiator; The third end is the second open end, and the fourth end is connected to the floor or is the fourth open end of the second radiator.

5. An antenna structure, characterized in that, Includes a first radiator, a second radiator, a floor, and a decoupling circuit; The floor includes an adjacent and intersecting first edge and a second edge; The first radiator includes an intersecting first segment and a second segment. The first segment is located on one side of the first edge of the floor and is spaced apart from the first edge. The second segment is located on one side of the second edge of the floor and is spaced apart from the second edge. The first radiator is provided with a first feed point. The entire second radiator is located on one side of the second edge and is spaced apart from the second edge. The second radiator is located on the side of the second section of the first radiator away from the first section. The second radiator is provided with a second feed point. The end of the first radiator includes a first end and a second end. The first end is the end of the first segment of the first radiator that is away from the second segment, and the second end is the end of the second segment of the first radiator that is away from the first segment. The second radiator has a third end and a fourth end at its end, with the third end being closer to the first radiator than the fourth end; The first end of the first radiator is an open end, and the fourth end of the second radiator is grounded; The second end of the first radiator is a first open end, the third end of the second radiator is a second open end, and a gap is formed between the first open end and the second open end, the gap being used to form an equivalent capacitance; The decoupling circuit connects the first open terminal and the second open terminal; The first radiator or one of the second radiators includes a first sub-radiator and a second sub-radiator spaced apart. The entire first sub-radiator is located on one side of the second sub-radiator, and the entire first radiator or the other radiator is located on the other side of the second sub-radiator. The first sub-radiator is coupled to the second sub-radiator. The end of the second sub-radiator away from the first sub-radiator is the first open end or the second open end. The first feed point is located on the first sub-radiator.

6. An antenna structure, characterized in that, Includes a first radiator, a second radiator, a floor, and a decoupling circuit; The floor includes an adjacent and intersecting first edge and a second edge; The first radiator includes an intersecting first segment and a second segment, the first segment being located on one side of the first edge of the floor and spaced apart from the first edge, and the second segment being located on one side of the second edge of the floor and spaced apart from the second edge; The entire second radiator is located on one side of the second edge and is spaced apart from the second edge, and the second radiator is located on the side of the second segment of the first radiator away from the first segment; The end of the first radiator includes a first end and a second end. The first end is the end of the first segment of the first radiator that is away from the second segment, and the second end is the end of the second segment of the first radiator that is away from the first segment. The second radiator has a third end and a fourth end at its end, with the third end being closer to the first radiator than the fourth end; The first end of the first radiator is grounded, the fourth end of the second radiator is an open end, and the grounding position of the second radiator is located between the third end and the fourth end; The second end of the first radiator is a first open end, the third end of the second radiator is a second open end, and a gap is formed between the first open end and the second open end, the gap being used to form an equivalent capacitance; The first radiator is provided with a first feed point, and the second radiator is provided with a second feed point; The decoupling circuit connects the first open terminal and the second open terminal; The first radiator or one of the second radiators includes a first sub-radiator and a second sub-radiator spaced apart. The entire first sub-radiator is located on one side of the second sub-radiator, and the entire first radiator or the other radiator is located on the other side of the second sub-radiator. The first sub-radiator is coupled to the second sub-radiator. The end of the second sub-radiator away from the first sub-radiator is the first open end or the second open end. The first feed point is located on the first sub-radiator.

7. The antenna structure as described in claim 6, characterized in that, The operating frequency band of the first operating mode of the first radiator is the same as or differs from the operating frequency band of the second operating mode of the second radiator by less than 1 GHz.

8. The antenna structure as described in claim 7, characterized in that, The operating frequency band of the first operating mode of the first radiator and the operating frequency band of the second operating mode of the second radiator are any sub-6G operating frequency bands.

9. The antenna structure as described in claim 6, characterized in that, The electrical length of the second sub-radiator is less than 1 / 4 of the wavelength of the decoupling frequency band of the antenna structure. The decoupling frequency band is the same as the operating frequency band of the first operating mode of the first radiator, or the same as the operating frequency band of the second operating mode of the second radiator.

10. The antenna assembly structure as described in claim 9, characterized in that, The decoupling circuit is inductive, and its equivalent inductance value is related to the operating frequency band of the first operating mode of the first radiator and / or the operating frequency band of the second operating mode of the second radiator.

11. The antenna structure as described in claim 9, characterized in that, The decoupling circuit includes a lumped inductor or a distributed inductor.

12. The antenna structure as described in claim 10 or 11, characterized in that, The decoupling circuit includes a first branch and a second branch connected in parallel, wherein the equivalent inductance value of the first branch is different from that of the second branch.

13. The antenna structure as described in claim 12, characterized in that, The first branch is an inductive filter circuit, and the second branch includes a lumped inductor or a distributed inductor.

14. The antenna structure as described in claim 13, characterized in that, The first branch includes a capacitor, a first inductor, and a second inductor, wherein the capacitor is connected in parallel with the first inductor and then in series with the second inductor; the second branch includes a third inductor.

15. The antenna structure as described in claim 14, characterized in that, The decoupling circuit is connected to a first connection point of the first open end, the first connection point being within 0-2mm of the end face of the first open end, and / or the decoupling circuit is connected to a second connection point of the second open end, the second connection point being within 0-2mm of the end face of the second open end.

16. An electronic device, characterized in that, It includes a radio frequency front end and an antenna structure as described in any one of claims 1-15, wherein the radio frequency front end is connected to a first feed point of a first radiator of the antenna structure and a second feed point of a second radiator of the antenna structure.

17. The electronic device as claimed in claim 16, characterized in that, The electronic device includes a metal frame, which includes the first radiator and the second radiator.

18. The electronic device as claimed in claim 16 or 17, characterized in that, The floor includes any one of one or more grounded middle plates, grounding layers of one or more circuit boards, or one or more grounded metal components, or any combination of two or more of them.

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