Antenna components and electronic devices

Abstract

The present application discloses an antenna assembly and an electronic device, including a radiator and a signal source, wherein the radiator includes a first sub-radiator and a second sub-radiator, and there is a coupling gap between the first sub-radiator and the second sub-radiator; the end of the first sub-radiator includes a first coupling end and a first free end, and the first sub-radiator also has a feeding point and a first grounding point, the feeding point is located between the first free end and the first coupling end, and the distance between the first grounding point and the first coupling end is greater than the distance between the feeding point and the first coupling end; the second sub-radiator includes a second coupling end, a second free end, and a second grounding point located between the second coupling end and the second free end, and there is a coupling gap between the second coupling end and the first coupling end, and the first grounding point and the second grounding point are both used to be electrically connected to a reference ground; the signal source is electrically connected to the feeding point. The present application provides an antenna assembly and an electronic device for improving data transmission rate and communication quality.

Description

Technical Field

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

[0002] With the development of communication technology, electronic devices with communication functions are becoming more and more popular, and the requirements for Internet access speed are getting higher and higher. Therefore, how to improve the data transmission rate of electronic devices and improve the communication quality of electronic devices has become a technical problem that needs to be solved. Summary of the invention

[0003] The present application provides an antenna assembly and electronic equipment for increasing data transmission rate and improving communication quality.

[0004] In a first aspect, an antenna assembly provided by an embodiment of the present application includes:

[0005] A radiator, comprising a first sub-radiator and a second sub-radiator, wherein a coupling gap exists between the first sub-radiator and the second sub-radiator; an end portion of the first sub-radiator comprises a first coupling end and a first free end, the first sub-radiator further comprises a feeding point and a first grounding point, the feeding point is located between the first free end and the first coupling end, and the distance between the first grounding point and the first coupling end is greater than the distance between the feeding point and the first coupling end; the second sub-radiator comprises a second coupling end, a second free end, and a second grounding point located between the second coupling end and the second free end, the coupling gap exists between the second coupling end and the first coupling end, and the first grounding point and the second grounding point are both used to be electrically connected to a reference ground; and

[0006] A signal source is electrically connected to the feeding point.

[0007] In a second aspect, an embodiment of the present application provides an electronic device, which includes a shell, a reference ground and at least one antenna assembly, wherein the reference ground is arranged in the shell, and the radiator of the antenna assembly is integrated in the shell, or is arranged on the surface of the shell, or is arranged in the space surrounded by the shell; the first grounding point and the second grounding point are both electrically connected to the reference ground.

[0008] The antenna assembly and electronic device provided in the present application, by capacitively coupling the second sub-radiator with the first sub-radiator, and designing the grounding point of the second sub-radiator to be located between the two ends of the second sub-radiator, and reasonably designing the grounding point of the first sub-radiator to be located between the two ends of the first sub-radiator or away from the end of the second sub-radiator, so that the resonant currents on the first sub-radiator and the second sub-radiator have a variety of distribution modes, thereby supporting a variety of resonant modes, so that the antenna assembly can support a wider bandwidth or support more frequency bands, thereby improving the throughput and data transmission rate of the antenna assembly when applied to electronic equipment, and improving the communication quality of the electronic equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0011] Figure 2 yes Figure 1 A schematic diagram of the structure of the electronic device shown;

[0012] Figure 3 yes Figure 2 A schematic structural diagram of a first antenna assembly in an electronic device shown;

[0013] Figure 4 yes Figure 2 A schematic structural diagram of a second antenna assembly in an electronic device shown;

[0014] Figure 5 yes Figure 3 A schematic diagram of an S-parameter curve of the antenna assembly shown;

[0015] Figure 6 yes Figure 4 A schematic diagram of an S-parameter curve of the antenna assembly shown;

[0016] Figure 7 is a structural schematic diagram of a first matching circuit provided in an embodiment of the present application;

[0017] Figure 8 is a structural schematic diagram of a second first matching circuit provided in an embodiment of the present application;

[0018] Fig. 9 is a structural schematic diagram of a third first matching circuit provided in an embodiment of the present application;

[0019] Fig.10 is a structural schematic diagram of a fourth first matching circuit provided in an embodiment of the present application;

[0020] Fig.11 is a structural schematic diagram of a fifth first matching circuit provided in an embodiment of the present application;

[0021] Fig.12 is a structural schematic diagram of a sixth first matching circuit provided in an embodiment of the present application;

[0022] Fig.13 is a structural schematic diagram of a seventh first matching circuit provided in an embodiment of the present application;

[0023] Fig.14 is a structural schematic diagram of an eighth first matching circuit provided in an embodiment of the present application;

[0024] Fig.15 yes Figure 3 A schematic diagram of the first resonant current density distribution in the antenna assembly shown;

[0025] Fig.16 yes Figure 3 A schematic diagram of the second resonant current density distribution in the antenna assembly shown;

[0026] Fig.17 yes Figure 3 A schematic diagram of the third resonant current density distribution in the antenna assembly shown;

[0027] Fig.18 yes Figure 4 A graph of the radiation efficiency of the provided antenna assembly;

[0028] Fig.19 yes Figure 4 A schematic diagram of a fourth resonant current density distribution in the antenna assembly shown;

[0029] Fig. 20 yes Figure 4 A schematic diagram of the fifth resonant current density distribution in the antenna assembly shown;

[0030] Fig.21 yes Figure 4 A schematic diagram of the sixth resonant current density distribution in the antenna assembly shown;

[0031] Fig. 22 yes Figure 4 A schematic diagram of the seventh resonant current density distribution in the antenna assembly shown;

[0032] Fig.23 yes Figure 4 A schematic structural diagram of a first sub-circuit provided in a first matching circuit in the antenna assembly shown;

[0033] Fig.24 yes Figure 4 The antenna assembly shown is provided with a structural schematic diagram of a second matching circuit;

[0034] Fig.25 yes Figure 4 A schematic diagram of the structure of a third matching circuit provided in the antenna assembly shown;

[0035] Fig.26 yes Figure 4 A schematic diagram of the structure of a fourth matching circuit provided in the antenna assembly shown;

[0036] Fig. 27 yes Figure 2 A schematic structural diagram of a third antenna assembly in an electronic device shown;

[0037] Fig.28 yes Figure 4 The antenna assembly shown is provided with a DC isolation assembly, a filtering assembly, and a detection assembly in a first connection mode;

[0038] Fig.29 yes Figure 4 The antenna assembly shown is provided with a DC isolation assembly, a filtering assembly, and a detection assembly in a second connection mode;

[0039] Fig.30 yes Figure 4 The antenna assembly shown is provided with a DC isolation assembly, a filtering assembly, and a detection assembly in a third connection mode;

[0040] Fig.31 yes Figure 4 The schematic diagram of the first configuration structure of the antenna assembly, the middle frame and the reference ground shown;

[0041] Fig.32 yes Figure 4 A schematic diagram of a second configuration structure of the antenna assembly, the middle frame, and the reference ground shown;

[0042] Fig.33 yes Figure 4 A schematic diagram of a third configuration structure of the antenna assembly, the middle frame, and the reference ground shown;

[0043] Fig.34 It is a structural schematic diagram of a first antenna assembly, a second antenna assembly, a middle frame, and a reference ground provided in an embodiment of the present application;

[0044] Fig.35 yes Figure 4 Schematic diagram of the structure of four antenna components, middle frame and reference ground shown. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. In addition, the reference to "embodiment" or "implementation method" in this article means that the specific features, structures or characteristics described in conjunction with the embodiments or implementation methods may be included in at least one embodiment of the present application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device 1000 includes an antenna assembly 100. The antenna assembly 100 is used to send and receive electromagnetic wave signals to realize the communication function of the electronic device 1000. The present application does not specifically limit the position of the antenna assembly 100 in the electronic device 1000. The electronic device 1000 also includes a display screen 300 and a housing 200 that are covered and connected to each other. The antenna assembly 100 can be arranged inside the housing 200 of the electronic device 1000, or partially integrated with the housing 200, or partially arranged outside the housing 200. Figure 1 The radiator of the antenna assembly 100 is integrated with the housing 200. Of course, the antenna assembly 100 can also be arranged on the retractable assembly of the electronic device 1000. In other words, at least part of the antenna assembly 100 can also extend out of the electronic device 1000 along with the retractable assembly of the electronic device 1000, and retract into the electronic device 1000 along with the retractable assembly; or, the overall length of the antenna assembly 100 can be extended along with the extension of the retractable assembly of the electronic device 1000.

[0047] The electronic device 1000 includes but is not limited to a telephone, a television, a tablet computer, a mobile phone, a camera, a personal computer, a laptop computer, a vehicle-mounted device, a headset, a watch, a wearable device, a base station, a vehicle-mounted radar, a customer premise equipment (Customer Premise Equipment, CPE), and other devices capable of transmitting and receiving electromagnetic wave signals. In this application, the electronic device 1000 is taken as a mobile phone as an example, and other devices can refer to the specific description in this application.

[0048] For ease of description, the electronic device 1000 is in Figure 1 The perspective in is used as a reference, the width direction of the electronic device 1000 is defined as the X-axis direction, the length direction of the electronic device 1000 is defined as the Y-axis direction, and the thickness direction of the electronic device 1000 is defined as the Z-axis direction. The X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other. The direction indicated by the arrow is the positive direction.

[0049] See also Figure 2 , the housing 200 includes a frame 210 and a back cover 220. A middle plate 410 is formed in the frame 210 by injection molding, and a plurality of mounting grooves for mounting various electronic devices are formed on the middle plate 410. The middle plate 410 and the frame 210 together form the middle frame 420 of the electronic device 100. After the display screen 300, the middle frame 420 and the back cover 220 are covered, a receiving space is formed on both sides of the middle frame 420. One side of the frame 210 (for example, the back side) is surrounded by the periphery of the back cover 220, and the other side of the frame 210 (for example, the front side) is surrounded by the periphery of the display screen 300. The electronic device 1000 also includes a battery, a camera, a microphone, a receiver, a speaker, a face recognition module, a fingerprint recognition module, etc., which are arranged in the receiving space and can realize the basic functions of the mobile phone, which will not be repeated in this embodiment.

[0050] The antenna assembly 100 provided in the present application is described in detail below in conjunction with the accompanying drawings. Of course, the antenna assembly 100 provided in the present application includes but is not limited to the following implementations.

[0051] See also Figure 3 The antenna assembly 100 at least includes a radiator 10 , a first matching circuit M1 and a signal source 20 .

[0052] See also Figure 3 , the radiator 10 includes a first sub-radiator 11 and a second sub-radiator 12. There is a coupling gap 13 between the first sub-radiator 11 and the second sub-radiator 12. The first sub-radiator 11 and the second sub-radiator 12 are coupled through the coupling gap 13. In this embodiment, the shapes of the first sub-radiator 11 and the second sub-radiator 12 are both straight bars. Of course, in other embodiments, the shapes of the first sub-radiator 11 and the second sub-radiator 12 can also be other shapes such as bent bars, curved bars, patches, etc.

[0053] See also Figure 3 and Figure 4 , the end of the first sub-radiator 11 at least includes a first free end 111 and a first coupling end 112. In the present embodiment, the first free end 111 and the first coupling end 112 are opposite ends of the first sub-radiator 11 which is in a straight bar shape. In other embodiments, the first sub-radiator 11 is bent, and the first free end 111 and the first coupling end 112 may not be opposite to each other in a straight line direction, but the first free end 111 and the first coupling end 112 are the two ends of the first sub-radiator 11. The first sub-radiator 11 also has a first grounding point A and a feeding point B. Among them, the feeding point B is located between the first free end 111 and the first coupling end 112. The distance between the first grounding point A and the first coupling end 112 is greater than the distance between the feeding point B and the first coupling end 112. For details, please refer to Figure 4 , the first grounding point A is located between the feeding point B and the first free end 111, or, see Figure 3 , the first grounding point A is located at the first free end 111. The first grounding point A is used to be electrically connected to the first reference ground GND1, and its electrical connection method includes but is not limited to direct welding, or indirect electrical connection through a coaxial line, a microstrip line, a conductive spring, a conductive adhesive, etc. The present application does not limit the specific positions of the first grounding point A and the feeding point B on the first sub-radiator 11.

[0054] See also Figure 3 , the second sub-radiator 12 at least includes a second coupling end 121, a second free end 122, and a second grounding point D located between the second coupling end 121 and the second free end 122. In this embodiment, the second coupling end 121 and the second free end 122 are two ends of the second sub-radiator 12. Optionally, the first sub-radiator 11 and the second sub-radiator 12 can be arranged in a straight line or approximately in a straight line (i.e., there is a smaller tolerance in the design process). Of course, in other embodiments, the first sub-radiator 11 and the second sub-radiator 12 can also be staggered in the extension direction to form an avoidance space, etc.

[0055] See also Figure 3 , the first coupling end 112 and the second coupling end 121 are opposite and spaced apart. A coupling gap 13 is formed between the first coupling end 112 and the second coupling end 121. The coupling gap 13 is a gap between the first coupling end 112 of the first sub-radiator 11 and the second coupling end 121 of the second sub-radiator 12. For example, the width of the coupling gap 13 may be 0.5 to 2 mm, but is not limited to this size. The first sub-radiator 11 and the second sub-radiator 12 can generate capacitive coupling through the coupling gap 13. In one viewing angle, the first sub-radiator 11 and the second sub-radiator 12 can be regarded as two parts of the radiator 10 separated by the coupling gap 13.

[0056] The first sub-radiator 11 and the second sub-radiator 12 are capacitively coupled through the coupling gap 13. "Capacitive coupling" means that an electric field is generated between the first sub-radiator 11 and the second sub-radiator 12, and the signal of the first sub-radiator 11 can be transmitted to the second sub-radiator 12 through the electric field, and the signal of the second sub-radiator 12 can be transmitted to the first sub-radiator 11 through the electric field, so that the first sub-radiator 11 and the second sub-radiator 12 can achieve electrical signal conduction even in a non-contact or non-connected state. In this embodiment, the first sub-radiator 11 can generate an electric field under the excitation of the signal source 20, and the electric field energy can be transmitted to the second sub-radiator 12 through the coupling gap 13, thereby causing the second sub-radiator 12 to generate an excitation current.

[0057] See also Figure 3The second grounding point D of the second sub-radiator 12 is used to be electrically connected to the second reference ground GND2.

[0058] See also Figure 3 , the signal source 20 is electrically connected to the feed point B. Specifically, one end of the first matching circuit M1 is electrically connected to the feed point B. The signal source 20 is electrically connected to the other end of the first matching circuit M1. The signal source 20 is a radio frequency transceiver chip for sending radio frequency signals or a feeder electrically connected to a radio frequency transceiver chip for sending radio frequency signals. The first matching circuit M1 may include a plurality of selection branches formed by a switch device, a capacitor device, an inductor device, a resistor device, etc., and adjustable devices such as variable capacitors.

[0059] The signal source 20 feeds the RF signal directly into the first sub-radiator 11. Due to the capacitive coupling between the first sub-radiator 11 and the second sub-radiator 12, the current on the first sub-radiator 11 excites the second sub-radiator 12 to generate an excitation current. In this way, both the first sub-radiator 11 and the second sub-radiator 12 have an excitation current, and the excitation current can generate multiple resonance modes in the first sub-radiator 11 and the second sub-radiator 12.

[0060] See also Figure 5 and Figure 6 , the radiator 10 supports at least three resonant modes (e.g. Figure 5 a, b, c in, for example Figure 6 d, e, f, g in ). The resonant mode is characterized by the antenna assembly 100 having a higher electromagnetic wave receiving and transmitting efficiency at and near the resonant frequency. The resonant frequency is the center frequency of the resonant mode, and the resonant frequency and its vicinity form a frequency band supported or covered by the resonant mode. Optionally, in the return loss curve, the absolute value of the return loss value greater than or equal to 5dB (for example only, and cannot be used as a limitation of the return loss value for higher efficiency in this application) is taken as a reference value with higher electromagnetic wave receiving and transmitting efficiency. The set of frequencies in a resonant mode where the absolute value of the return loss value is greater than or equal to 5dB is taken as the frequency band supported by the resonant mode.

[0061] The frequency bands supported by the resonance mode include LTE 4G band, NR 5G band, Wi-Fi 6E band, or a combination of LTE 4G band and NR 5G band, etc. The frequency band supported by a resonance mode may be a separate LTE 4G band (e.g., B3), a separate NR 5G band (e.g., N3), a separate Wi-Fi 6E band, or a combination of LTE 4G band and NR 5G band (e.g., B3 / N3), etc.

[0062] It can be understood that the number of resonance modes supported by the antenna assembly 100 increases, and its effect is reflected in at least the following two aspects. The first aspect is that when the frequency bands supported by the various resonance modes of the antenna assembly 100 are all continuous, the frequency bandwidth supported by the antenna assembly 100 is relatively wide, and an ultra-wideband can be formed, which is 1G, 1.5G or 2G, etc., to achieve ultra-wideband coverage, improve download bandwidth, improve throughput download speed, and improve the user's Internet experience; the second aspect is that when the frequency bands supported by the various resonance modes of the antenna assembly 100 are discontinuous, the number of frequency bands supported by the antenna assembly 100 increases, and multi-band coverage is achieved. For example, the antenna assembly 100 can simultaneously support 4G / 5G medium and high frequencies (e.g., 1000MHz to 3000MHz) and 4G / 5G ultra-high frequencies (e.g., 3000MHz to 10000MHz), simultaneously support two different segments of medium and high frequencies, and simultaneously support 4G / 5G medium and high frequencies and WiFi-6E frequency bands (e.g., 5.925GHz to 7.125GHz). The frequency bands supported by the multiple resonance modes are continuous, which means that two adjacent frequency bands supported by the multiple resonance modes overlap at least in part. The frequency bands supported by the multiple resonance modes are discontinuous, which means that two adjacent frequency bands supported by the multiple resonance modes do not overlap.

[0063] The antenna assembly 100 and the electronic device 1000 provided in the embodiment of the present application are configured to capacitively couple the second sub-radiator 12 with the first sub-radiator 11, and to design the second grounding point D of the second sub-radiator 12 to be located between the two ends of the second sub-radiator 12, and to reasonably design the first grounding point A of the first sub-radiator 11 to be located between the two ends of the first sub-radiator 11 or away from the end of the second sub-radiator 12, so that the resonant current density on the first sub-radiator 11 and the second sub-radiator 12 has a variety of distribution modes, thereby supporting a variety of resonant modes, so that the antenna assembly 100 can support a wider bandwidth or support more frequency bands, thereby improving the download bandwidth, throughput and data transmission speed when the antenna assembly 100 is applied to the electronic device 1000, and improving the communication quality of the electronic device 1000. In addition, when the bandwidth of the antenna assembly 100 is wide, there is no need for an adjustable device to switch to frequency bands at different positions, thereby eliminating the need for an adjustable device, saving costs, and achieving a simple structure of the antenna assembly 100.

[0064] The present application does not specifically limit the shape and structure of the first sub-radiator 11 and the second sub-radiator 12. The shapes of the first sub-radiator 11 and the second sub-radiator 12 include but are not limited to strips, sheets, rods, coatings, films, etc. When the first sub-radiator 11 and the second sub-radiator 12 are in strip shape, the present application does not limit the extension trajectory of the first sub-radiator 11 and the second sub-radiator 12, so the first sub-radiator 11 and the second sub-radiator 12 can be extended in a straight line, a curve, a multi-section bend, etc. The above-mentioned radiator 10 can be a line with uniform width on the extension trajectory, or a strip with different widths such as a gradient width and a widened area.

[0065] The first ground point A and the second ground point D of the antenna assembly 100 are electrically connected to the reference ground, including but not limited to the following embodiments. Optionally, the antenna assembly 100 itself has a reference ground. The specific form of the reference ground includes but is not limited to a metal plate, a metal layer formed inside a flexible circuit board, a hard circuit board, etc. Optionally, the first ground point A and the second ground point D are electrically connected to the reference ground through conductive parts such as grounding springs, solder, and conductive adhesive. Among them, the first reference ground GND1 and the second reference ground GND2 can be a reference ground integrally formed in the antenna assembly 100, or two independent but interconnected reference grounds in the antenna assembly 100. When the antenna assembly 100 is arranged in the electronic device 1000, the reference ground of the antenna assembly 100 is electrically connected to the reference ground of the electronic device 1000. Optionally, the antenna assembly 100 itself does not have a reference ground, and the first ground point A and the second ground point D of the antenna assembly 100 are directly electrically connected or indirectly electrically connected to the reference ground of the electronic device 1000 or the reference ground of the electronic device in the electronic device 1000 through a conductive part. In the present application, the antenna assembly 100 is disposed in the electronic device 1000 , and the metal alloy on the middle board 410 is used as the reference ground. That is, the first reference ground GND1 and the second reference ground GND2 are part of the middle board 410 or are electrically connected to the middle board 410 .

[0066] In general technology, the effective efficiency bandwidth of the antenna is not wide enough. For example, in the coverage of the medium and high frequency bands (1000MHz~3000MHz), such as 1710MHz~2690MHz (B3 / N3+B1 / N1+B7 / N7), in actual use, due to the limited space for setting the antenna, an antenna that can generate two resonant modes is generally used to support the above frequency bands. Since the frequency band width supported by each resonant mode is relatively small, if it is to cover 1710MHz~2690MHz, the center frequencies of the two resonant modes are relatively far apart. In this way, the frequency band between the two resonant modes is far away from the center frequencies of the two resonant modes, resulting in low efficiency, that is, the efficiency of the intermediate frequency band in the above frequency band, such as the 1.9GHz to 2.1GHz frequency band (corresponding to the B1 / N1 frequency band), is relatively weak. If the offset of the resonant mode is tuned by the tuning circuit to adjust the center frequency of the resonant mode to the vicinity of the 1.9GHz to 2.1GHz frequency band (corresponding to the B1 / N1 frequency band), so that the efficiency of the 1.9GHz to 2.1GHz frequency band (corresponding to the B1 / N1 frequency band) is higher, it will cause the efficiency of other frequency bands to decrease at the same time. In other words, it is difficult for the antenna in general technology to cover (B3 / N3+B1 / N1) at the same time with high efficiency, and it is also difficult to cover (B1 / N1+B7 / N7) at the same time with high efficiency, and it is even more difficult to cover (B3 / N3+B1 / N1+B7 / N7) at the same time, resulting in poor signal transmission and reception of the antenna in certain frequency bands or the antenna is not miniaturized enough by setting more radiators to support more frequency bands. It should be noted that the above frequency bands are only examples and cannot be used as limitations on the frequency bands that can be radiated by this application.

[0067] The antenna assembly 100 provided in the present application designs the structure of the first sub-radiator 11 and the second sub-radiator 12 and the position of the second grounding point D so that the resonant current density of the first sub-radiator 11 and the second sub-radiator 12 has a variety of distribution modes, thereby achieving a simple structure and a small overall size of the antenna assembly 100 while being able to support a variety of resonant modes, such as three or more resonant modes. Compared with a general antenna supporting 1710MHz to 2690MHz, the antenna assembly 100 provided in the present application can support three or more resonant modes, so it can have a higher efficiency in the frequency band of 1710MHz to 2690MHz. , so that in practical applications, it is possible to simultaneously cover (B3 / N3+B1 / N1) with higher efficiency, simultaneously cover (B1 / N1+B7 / N7) with higher efficiency, and simultaneously cover (B3 / N3+B1 / N1+B7 / N7) with higher efficiency, and the antenna assembly 100 provided in the present application has a small number of sub-radiators, and the number of sub-radiators is not increased while generating three or more resonant modes. In other words, the antenna assembly 100 provided in the present application has a simple structure, a small overall size, and is very convenient for being set in an electronic device 1000 with extremely limited internal space and has high efficiency in the 1710MHz to 2690MHz frequency band. Among them, B3 / N3 includes the situation where any one of B3 and N3 is selected or both exist. The definitions of B1 / N1 and B7 / N7 are similar to those of B3 / N3 and will not be repeated here. Of course, the above frequency band of 1710MHz to 2690MHz is only an example of the present application. In other embodiments, by adjusting the size of the first sub-radiator 11 and the second sub-radiator 12, the antenna assembly 100 can also have a higher efficiency coverage in frequency bands such as 1000MHz to 2000MHz, 3000MHz to 4000MHz, 4000MHz to 5000MHz, 5000MHz to 6000MHz or above 6000MHz.

[0068] The present application does not limit the specific position of the second grounding point D. By setting the second grounding point D between the second free end 122 and the second coupling end 121, so that the second sub-radiator 12 and the grounding branch form a T-shaped antenna, the excitation current provided by the signal source 20 forms a current density distribution with monopole characteristics and dipole characteristics on the T-shaped second sub-radiator 12, thereby exciting a variety of resonant modes. The second grounding point D can be located near the geometric center of the second sub-radiator 12. For example, the length between the second grounding point D and the second free end 122 is (1 / 4) to (3 / 4) times the length of the second sub-radiator 12. In other words, the position of the second grounding point D can be within the range of (1 / 4) to (3 / 4) times the length of the second sub-radiator 12 from the second free end 122. Through the above design or in combination with the design of the matching circuit on the second sub-radiator 12 (detailed description will be given later), the second sub-radiator 12 can form a variety of resonant current density distributions such as monopole characteristics and dipole characteristics to support a variety of resonant modes, thereby generating a wider bandwidth and improving throughput and data transmission rate. In addition, the second grounding point D can be set in a larger range of positions, and the optional range of the position of the set grounding connector is larger. When the antenna assembly 100 is set on the electronic device 1000, the optional position range of the grounding connector is larger, so that the optional position range of the antenna assembly 100 is larger, which is more conducive to the installation of the antenna assembly 100 on the electronic device 1000. Of course, the above 1 / 4 times and 3 / 4 times are only for example, and are not limited to this. In other embodiments, the length between the second grounding point D and the second free end 122 can also be slightly less than 1 / 4 of the length of the second sub-radiator 12, or slightly greater than 3 / 4 of the length of the second sub-radiator 12.

[0069] Optionally, the length between the second grounding point D and the second free end 122 is (3 / 8) to (5 / 8) times the length of the second sub-radiator 12. In other words, the position of the second grounding point D can be within the range of (3 / 8) to (5 / 8) times the length from the second free end 122 on the second sub-radiator 12. Through the above design, the position of the second grounding point D is closer to the middle part of the second sub-radiator 12 (not in the middle position), which is more conducive to forming the current density distribution of the monopole mode and the dipole mode, thereby increasing the bandwidth and efficiency of the antenna assembly 100.

[0070] The present application does not make any specific limitation on the structure of the first matching circuit M1. The first matching circuit M1 may include a frequency selection filter circuit, which selects the frequency of the RF signal sent by the signal source 20 to obtain a RF signal of a required frequency band (for example, a RF signal of 1 GHz to 4 GHz).

[0071] Please also read Figures 7 to 14 , Figure 7 to Figure 14Schematic diagrams of the first matching circuit M1 provided for each embodiment. The present application does not limit the specific structure of the first matching circuit M1. The first matching circuit M1 includes one or more of the following frequency-selective filter circuits.

[0072] See also Figure 7 The first matching circuit M1 includes a bandpass circuit formed by connecting an inductor L0 and a capacitor C0 in series.

[0073] See also Figure 8 The first matching circuit M1 includes a band-stop circuit formed by connecting an inductor L0 and a capacitor C0 in parallel.

[0074] See also Fig. 9 The first matching circuit M1 includes a bandpass or bandstop circuit formed by an inductor L0, a first capacitor C1, and a second capacitor C2. The inductor L0 is connected in parallel with the first capacitor C1, and the second capacitor C2 is electrically connected to a node where the inductor L0 and the first capacitor C1 are electrically connected.

[0075] See also Fig.10 The first matching circuit M1 includes a bandpass or band-stop circuit formed by a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 is connected in parallel with the first inductor L1, and the second inductor L2 is electrically connected to a node where the capacitor C0 and the first inductor L1 are electrically connected.

[0076] See also Fig.11 The first matching circuit M1 includes a bandpass or band-stop circuit formed by an inductor L0, a first capacitor C1, and a second capacitor C2. The inductor L0 is connected in series with the first capacitor C1, and one end of the second capacitor C2 is electrically connected to the first end of the inductor L0 that is not connected to the first capacitor C1, and the other end of the second capacitor C2 is electrically connected to the end of the first capacitor C1 that is not connected to the inductor L0.

[0077] See also Fig.12 The first matching circuit M1 includes a bandpass or band-stop circuit formed by a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 is connected in series with the first inductor L1, one end of the second inductor L2 is electrically connected to an end of the capacitor C0 that is not connected to the first inductor L1, and the other end of the second inductor L2 is electrically connected to an end of the first inductor L1 that is not connected to the capacitor C0.

[0078] See also Fig.13 The first matching circuit M1 includes a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2. The first capacitor C1 is connected in parallel with the first inductor L1, the second capacitor C2 is connected in parallel with the second inductor L2, and one end of the whole formed by the second capacitor C2 and the second inductor L2 in parallel is electrically connected to one end of the whole formed by the first capacitor C1 and the first inductor L1 in parallel.

[0079] See also Fig.14The first matching circuit M1 includes a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2. The first capacitor C1 and the first inductor L1 are connected in series to form a first unit 101, the second capacitor C2 and the second inductor L2 are connected in series to form a second unit 102, and the first unit 101 and the second unit 102 are connected in parallel.

[0080] The first matching circuit M1 selects a radio frequency signal of a required frequency band through one or more of the above frequency selection filter circuits, for example, a radio frequency signal of 1 GHz to 3 GHz or a radio frequency signal of 1 GHz to 4 GHz, and sends the selected radio frequency signal to the first sub-radiator 11 and the second sub-radiator 12, so that the first sub-radiator 11 and the second sub-radiator 12 can send and receive the required electromagnetic wave signals.

[0081] The specific structure of the antenna assembly 100 provided in the present application includes but is not limited to the following embodiments.

[0082] In the implementation of the first antenna assembly 100, please refer to Figure 3 , the first grounding point A of the first sub-radiator 11 is located at the first free end 111. The first sub-radiator 11 and its grounding path form a substantially L-shaped branch. The second grounding point D of the second sub-radiator 12 is located between the second coupling end 121 and the second free end 122. The second sub-radiator 12 and its grounding path form a substantially T-shaped branch.

[0083] The resonant mode generated by the antenna assembly 100 is described in detail below in conjunction with the return loss curve diagram of the antenna assembly 100 provided in the first embodiment.

[0084] See also Figure 5 , the radiator 10 can support three resonance modes simultaneously under the excitation of the signal source 20. Among them, the three resonance modes are the first resonance mode a, the second resonance mode b and the third resonance mode c. Among them, the center frequency of the first resonance mode a, the center frequency of the second resonance mode b, and the center frequency of the third resonance mode c are the first frequency f1, the second frequency f2 and the third frequency f3 respectively. The first frequency f1, the second frequency f2 and the third frequency f3 are kept at appropriate intervals. Optionally, the first frequency f1, the second frequency f2 and the third frequency f3 increase successively. In the return loss curve, the absolute value of the return loss value greater than or equal to 5dB is taken as a reference value with a higher electromagnetic wave transceiver efficiency. In this way, the frequency bands supported by the first resonance mode a, the second resonance mode b and the third resonance mode c are the first frequency band T1, the second frequency band T2 and the third frequency band T3 respectively.

[0085] In this embodiment, the first frequency band T1, the second frequency band T2, and the third frequency band T3 are continuous frequencies in pairs. Thus, the bandwidth formed by the frequency bands supported by the first resonance mode a, the second resonance mode b, and the third resonance mode c is the bandwidth formed by the first frequency band T1+the second frequency band T2+the third frequency band T3, so as to form a bandwidth greater than 1 GHz, for example, 1.3 GHz.

[0086] As for the commonly used application frequency bands, this embodiment applies the antenna assembly 100 to the frequency band of 1.6GHz to 2.9GHz to simultaneously support multiple different frequency bands planned by multiple groups of operators, for example, B1, B3, B7, N1, N3, N7, etc., which is conducive to meeting the frequency band division requirements of different operators.

[0087] See also Figure 5 , the center frequency of the first resonance mode a is about 1.724GHz, and the first frequency band T1 is about 1.62GHz~1.98GHz. The first resonance mode a can support B3 / N3. The center frequency of the second resonance mode b is about 2.264GHz, and the second frequency band T2 is about 1.98GHz~2.46GHz. The second resonance mode b can support B1 / N1. The center frequency of the third resonance mode c is about 2.676GHz, and the third frequency band T3 is about 2.46GHz~2.88GHz. The third resonance mode c can support B7 / N7. Figure 5 It can be seen that the first frequency band T1, the second frequency band T2 and the third frequency band T3 are continuous and aggregated to form the target application frequency band. The target application frequency band can cover the frequency band of 1.6 to 2.9 GHz, and thus support a bandwidth of 1.3G. It should be noted that by adjusting the effective electrical length and feeding position of the radiator 10, the target application frequency band can also be adjusted to include but not limited to 1.6GHz to 3GHz, 2GHz to 3.4GHz, 2.6GHz to 4GHz, 3.6GHz to 5GHz, etc., and the bandwidth of the target application frequency band includes but is not limited to 1.8G, 2G, 2.5G, 3G, etc.

[0088] When the target application frequency band covers 1.6GHz to 3GHz, the frequency band supported by the antenna assembly 100 for the LTE 4G frequency band includes but is not limited to at least one of B1, B2, B3, B4, B7, B32, B38, B39, B40, B41, B48, and B66, and the frequency band supported by the antenna assembly 100 for the NR 5G frequency band includes but is not limited to at least one of N1, N2, N3, N4, N7, N32, N38, N39, N40, N41, N48, and N66. The antenna assembly 100 provided in the present application can cover any combination of the above-mentioned NR 5G frequency bands and LTE 4G frequency bands. Of course, the antenna assembly 100 can only load 4G LTE signals (B1+B3+B7), or only load 5G NR signals (N1+N3+N7), or can also load 4G LTE signals and 5G NR signals (B1+N3+B7) at the same time, that is, to achieve dual connection (LTE NR Double Connect, EN-DC) between 4G wireless access network and 5G-NR. When the antenna assembly 100 loads 4G LTE signals or 5GNR signals alone, the frequency band received and transmitted by the antenna assembly 100 includes multiple carriers (carriers are radio waves of specific frequencies) aggregated, that is, carrier aggregation (CA) is achieved to increase transmission bandwidth, improve throughput, and improve signal transmission rate.

[0089] The frequency bands listed above may be medium and high frequency bands that will be used by multiple operators. The antenna assembly 100 provided in the present application can simultaneously support any one or more combinations of the above-mentioned frequency bands, so that the antenna assembly 100 provided in the present application can support electronic device 1000 models corresponding to multiple different operators. There is no need to adopt different antenna structures for different operators, thereby further improving the application scope and compatibility of the antenna assembly 100.

[0090] Of course, in other embodiments, the antenna assembly 100 can also be applied to the frequency band of 5.925 GHz to 7.125 GHz to support the WiFi-6E band and the like.

[0091] Of course, in other implementations, one of the first frequency band T1, the second frequency band T2, and the third frequency band T3 may be discontinuous with the other two or both of them may be discontinuous. For example, in the coverage (B3 / N3+B1 / N1+B7 / N7), since the frequency band of B3 / N3 is [1.71~1.785GHz], the frequency band of B1 / N1 is [1.92~1.98GHz], and the frequency band of B7 / N7 is [2.5~2.57GHz], relatively high efficiency is not required within [2.0~2.5GHz), and the second frequency band T2 and the third frequency band T3 can be discontinuous in the frequency band [2.0~2.5GHz) Compared with the scheme that the first frequency band T1, the second frequency band T2, and the third frequency band T3 are all continuous, the third resonant mode c can be covered at a higher frequency; in addition, since relatively high efficiency is not required within [1.8-1.9GHz], the first frequency band T1, the second frequency band T2, and the third frequency band T3 can be tuned to cover [1.71-1.785GHz], [1.92-1.98GHz], and [2.5-2.57GHz], respectively. In this way, the first frequency band T1 and the second frequency band T2 may be discontinuous in [1.8-1.9GHz], and the second frequency band T2 and the third frequency band T3 may be discontinuous in [2.0-2.5GHz). In other embodiments, the first frequency band T1 and the second frequency band T2 can also be tuned to support medium and high frequency bands such as B3 / N3+B1 / N1, while the third frequency band T3 supports ultra-high frequency bands, such as N78 (3.3-3.8GHz). The specific implementation method of tuning the positions of the first frequency band T1, the second frequency band T2, and the third frequency band T3 will be described later.

[0092] The first resonance mode a to the third resonance mode c are analyzed below from the perspective of current density distribution.

[0093] See also Fig.15 , the current density of the first resonant current R1 of the first resonant mode a is mainly distributed between the first grounding point A and the first coupling end 112 and between the second coupling end 121 and the second grounding point D, wherein the flow direction of the first resonant current R1 between the first grounding point A and the first coupling end 112 is the same as the flow direction between the second coupling end 121 and the second grounding point D. For details, please refer to Fig.15, the first resonant current R1 flows from the first reference ground GND1 to the first grounding point A, and then flows from the first grounding point A along the first sub-radiator 11 to the first coupling end 112, the first resonant current R1 flows to the second coupling end 121 through the coupling slot 13, and then flows from the second coupling end 121 to the second grounding point D, and flows to the second reference ground GND2 through the second grounding point D. Alternatively, the first resonant current R1 flows from the second reference ground GND2 to the second grounding point D, and then flows from the second grounding point D to the second coupling end 121, flows to the first coupling end 112 through the coupling slot 13, and then flows from the first coupling end 112 to the first grounding point A, and flows to the first reference ground GND1 through the first grounding point A. It should be noted that the first resonant current R1 is mainly distributed in a section of the first sub-radiator 11 and the second sub-radiator 12 where the second grounding point D is close to the first sub-radiator 11, and the first resonant current R1 also exists in a section of the second sub-radiator 12 where the second grounding point D is far from the first sub-radiator 11, but the current density is relatively weak. The above first resonant current R1 distribution forms a first resonant mode.

[0094] See also Fig.16 , the current density of the second resonant current R2 of the second resonant mode b is distributed between the first grounding point A and the first coupling end 112, and between the second coupling end 121 and the second free end 122. Among them, the flow direction of the second resonant current R2 between the first grounding point A and the first coupling end 112 is opposite to the flow direction between the second coupling end 121 and the second grounding point D. The flow direction of the second resonant current R2 between the second grounding point D and the second free end 122 is opposite to the flow direction between the second coupling end 121 and the second grounding point D. Specifically, the first part of the second resonant current R2 flows from the first coupling end 112 to the first grounding point A and returns to the ground through the first grounding point A; the second part of the second resonant current R2 flows from the second coupling end 121 to the second grounding point D and returns to the ground through the second grounding point D; the third part of the second resonant current R2 flows from the second free end 122 to the second grounding point D and returns to the ground through the second grounding point D. Alternatively, the first part of the second resonant current R2 flows from the first reference ground GND1 to the first grounding point A, and flows to the first coupling end 112 through the first grounding point A; the second part of the second resonant current R2 flows from the second reference ground GND2 to the second grounding point D, and flows to the second coupling end 121 through the second grounding point D, and the third part of the second resonant current R2 flows from the second grounding point D to the second free end 122. The above distribution of the second resonant current R2 forms a second resonant mode b. Among them, the second sub-radiator 12 is a T-shaped antenna, and the currents on both sides of the second grounding point D of the second sub-radiator 12 flow in opposite directions, presenting a monopole characteristic on the T-shaped antenna. The monopole characteristic enables the second sub-radiator 12 to excite more floor (i.e., reference ground) currents, thereby improving the radiation efficiency, so as to generate a second resonant mode b at the second frequency f2.

[0095] See also Fig.17 , the current density of the third resonant current R3 of the third resonant mode c is distributed between the first grounding point A and the first coupling end 112, and between the second coupling end 121 and the second free end 122. The flow direction of the third resonant current R3 between the first grounding point A and the first coupling end 112 is opposite to that between the second coupling end 121 and the second grounding point D, and the flow direction of the third resonant current R3 between the second grounding point D and the second free end 122 is the same as that between the second coupling end 121 and the second grounding point D. Specifically, the first part of the third resonant current R3 flows from the first coupling end 112 to the first grounding point A and returns to the ground through the first grounding point A; the second part of the third resonant current R3 flows from the second coupling end 121 to the second grounding point D and returns to the ground through the second grounding point D; the third part of the third resonant current R3 flows from the second grounding point D to the second free end 122. Alternatively, the first part of the third resonant current R3 flows from the first reference ground GND1 to the first grounding point A, and flows to the first coupling end 112 through the first grounding point A; the second part of the third resonant current R3 flows from the second reference ground GND2 to the second grounding point D, and flows to the second coupling end 121 through the second grounding point D, and the third part of the third resonant current R3 flows from the second free end 122 to the second coupling end 121. The above distribution of the third resonant current R3 forms a third resonant mode c. Among them, the second sub-radiator 12 is a T-shaped antenna, and the currents on both sides of the second grounding point D of the second sub-radiator 12 flow in the same direction, presenting a dipole characteristic on the T-shaped antenna, and the dipole characteristic can form a higher radiation efficiency, thereby generating a third resonant mode c at the third frequency f3.

[0096] It can be understood that, from the perspective of the resonant current density distribution of the first resonant mode a, the second resonant mode b and the third resonant mode c, the resonant currents corresponding to the first resonant mode a, the second resonant mode b and the third resonant mode c have partially the same flow direction, for example, the flow direction from the second coupling end 121 to the second grounding point D. In this way, the three resonant modes can enhance each other to increase the frequency band width supported by the antenna assembly 100.

[0097] The following analysis generates the first resonance mode a, the second resonance mode b and the third resonance mode c from the perspective of the wavelength modes corresponding to the first resonance frequency f1, the second resonance frequency f2 and the third resonance frequency f3.

[0098] Please refer to Figure 5 and Fig.15, the wavelength corresponding to the center frequency of the first resonant mode a is the first wavelength. Optionally, the first resonant mode a supports the first sub-radiator 11 to operate in a (1 / 8 to 1 / 4) wavelength mode. Specifically, the length of the first sub-radiator 11 is approximately (1 / 8 to 1 / 4) times the second wavelength. In other words, the length of the first sub-radiator 11 is approximately (1 / 8 to 1 / 4) times the wavelength corresponding to the first frequency f1. When a matching circuit for adjusting the frequency offset is not provided on the flow path of the first resonant current R1, the length of the first sub-radiator 11 is approximately (1 / 4) times the wavelength corresponding to the first frequency f1, so that the first sub-radiator 11 generates a higher transceiver efficiency at the first frequency f1, and then generates resonance at the first frequency f1 to form the first resonant mode a. When a grounded matching circuit that is capacitive to the first frequency band T1 is provided on the flow path of the first resonant current R1, the capacitive loading can shift the resonant frequency toward a low frequency, so the length of the first sub-radiator 11 corresponding to the resonance at the first frequency f1 can be shortened, for example, reduced to 1 / 8 times the wavelength corresponding to the first frequency f1, further reducing the size of the first sub-radiator 11. In addition, a grounded capacitive circuit can also be provided in the first matching circuit M1, and capacitive loading is performed in the region through which the first resonant current R1 flows, so that the resonant frequency shifts toward a low frequency, so the length of the first sub-radiator 11 corresponding to the resonance at the first frequency f1 is shortened, for example, reduced to 1 / 8 times the wavelength corresponding to the first frequency f1, etc.

[0099] Optional, please refer to Figure 5 and Fig.16, the wavelength corresponding to the center frequency of the second resonance mode b is the second wavelength. The second resonance mode b supports the second sub-radiator 12 between the second coupling end 121 and the second grounding point D to operate in the (1 / 8 to 1 / 4) wavelength mode. Specifically, the length between the second coupling end 121 and the second grounding point D is approximately (1 / 8 to 1 / 4) times the second wavelength. In other words, the length between the second coupling end 121 and the second grounding point D is approximately (1 / 8 to 1 / 4) times the wavelength corresponding to the second frequency f2. When a matching circuit for adjusting the frequency offset is not provided on the flow path of the second resonance current R2, the length between the second coupling end 121 and the second grounding point D is approximately (1 / 4) times the wavelength corresponding to the second frequency f2, so that the second sub-radiator 12 between the second coupling end 121 and the second grounding point D generates a higher transceiver efficiency at the second frequency f2, and then generates resonance at the second frequency f2 to form the second resonance mode b. When a grounded matching circuit that is capacitive to the second frequency band T2 is provided on the flow path of the second resonant current R2, the capacitive loading can shift the resonant frequency toward a low frequency, so the length between the second coupling end 121 corresponding to the resonance at the second frequency f2 and the second grounding point D is shortened, for example, reduced to 1 / 8 times of the wavelength corresponding to the second frequency f2, etc., further reducing the size of the second sub-radiator 12. In addition, a grounded capacitive circuit can also be provided in the first matching circuit M1, and capacitive loading is performed in the area through which the second resonant current R2 flows, so that the resonant frequency shifts toward a low frequency, so the length between the second coupling end 121 corresponding to the resonance at the second frequency f2 and the second grounding point D is shortened to less than 1 / 8 times of the wavelength corresponding to the second frequency f2.

[0100] Optional, please refer to Figure 5 and Fig.17 , the wavelength corresponding to the center frequency of the third resonance mode c is the third wavelength. The third resonance mode c supports the second sub-radiator 12 to operate in the (1 / 2) wavelength mode. The length of the second sub-radiator 12 is approximately (1 / 2) times the third wavelength. Wherein, in the case where a matching circuit for adjusting the frequency is not provided, the length of the second sub-radiator 12 is approximately 1 / 2 times the third wavelength, so as to create conditions for the subsequent antenna assembly 100 to generate a higher signal receiving and transmitting efficiency at the second frequency f2 and the third frequency f3. Furthermore, by providing a grounded capacitive matching circuit on the density distribution path of the third resonance current R3, the length of the second sub-radiator 12 can be further shortened.

[0101] Furthermore, by adjusting the length of the first sub-radiator 11, the length of the second sub-radiator 12, the position of the feeding point B, and the position of the second grounding point D, the positions of the first frequency f1, the second frequency f2, and the third frequency f3 can be adjusted so that the first frequency f1, the second frequency f2, and the third frequency f3 are close to each other, and the first frequency band T1, the second frequency band T2, and the third frequency band T3 are continuous, which can support a wider bandwidth and cover the frequency bands that need to be covered, thereby improving the throughput of the antenna assembly 100 and improving the Internet access rate of the electronic device 1000.

[0102] In a second possible implementation of the antenna assembly 100, please refer to Figure 4 and Figure 6 , the first grounding point A of the first sub-radiator 11 is located between the first free end 111 and the first coupling end 112. The first sub-radiator 11 and its grounding path form a roughly T-shaped branch. The present application does not limit the specific position of the first grounding point A between the first free end 111 and the first coupling end 112. Optionally, the length between the first grounding point A and the first free end 111 is (1 / 4) to (3 / 4) times the length of the first sub-radiator 11. Optionally, the length between the first grounding point A and the first free end 111 is (3 / 8) to (5 / 8) times the length of the first sub-radiator 11. The first grounding point A can be located close to the geometric center of the first sub-radiator 11, which is conducive to forming the resonant current density distribution of the monopole mode and the dipole mode, thereby increasing the bandwidth and efficiency of the antenna assembly 100.

[0103] The second grounding point D of the second sub-radiator 12 is located between the second coupling end 121 and the second free end 122. The second sub-radiator 12 and its grounding path form a substantially T-shaped branch.

[0104] The resonant mode generated by the antenna assembly 100 is described in detail below in conjunction with the return loss curve diagram of the antenna assembly 100 provided in the second embodiment.

[0105] Please refer to Figure 4 and Figure 6, the radiator 10 can support four resonance modes at the same time under the excitation of the signal source 20. Among them, the four resonance modes are the fourth resonance mode d, the fifth resonance mode e, the sixth resonance mode f and the seventh resonance mode g. Among them, the center frequency of the fourth resonance mode d, the center frequency of the fifth resonance mode e, the sixth resonance mode f and the seventh resonance mode g are the fourth frequency f4, the fifth frequency f5, the sixth frequency f6 and the seventh frequency f7 respectively. The fourth frequency f4, the fifth frequency f5, the sixth frequency f6 and the seventh frequency f7 are kept at appropriate intervals in sequence. Optionally, the fourth frequency f4, the fifth frequency f5, the sixth frequency f6 and the seventh frequency f7 increase in sequence. In the return loss curve, the absolute value of the return loss value greater than or equal to 5dB is taken as a reference value with a higher electromagnetic wave transceiver efficiency. In this way, the frequency bands supported by the fourth resonance mode d, the fifth resonance mode e, the sixth resonance mode f and the seventh resonance mode g are the fourth frequency band T4, the fifth frequency band T5, the sixth frequency band T6 and the seventh frequency band T7 respectively.

[0106] Compared with the antenna assembly 100 provided in the first embodiment, this embodiment improves the position of the first grounding point A so that more resonant current density distribution modes can be generated on the first sub-radiator 11 and the second sub-radiator 12, thereby supporting four resonant modes. The increase in the number of resonant modes can further increase the bandwidth and the efficiency of the antenna assembly 100 within the bandwidth.

[0107] See also Figure 6 , the center frequency of the fourth resonance mode d is about 1.449GHz, and the fourth frequency band T4 is about (1.41~1.56GHz). The fourth resonance mode d can support frequency bands such as B32 (1.452~1.496GHz), B21 (1.447~1.51GHz), and N75 (1.43~1.517GHz). The center frequency of the fifth resonance mode e is about 1.764GHz, and the fifth frequency band T5 is about (1.56~1.98GHz). The fifth resonance mode e can support frequency bands such as B3 / N3. The center frequency of the sixth resonance mode f is about 2.191GHz, and the sixth frequency band T6 is about (1.98~2.36GHz). The sixth resonance mode f can support frequency bands such as B1 / N1; the center frequency of the seventh resonance mode g is about 2.572GHz, and the seventh frequency band T7 is about (2.36~2.74GHz). The seventh resonance mode g can support frequency bands such as B7 / N7 and N41. It should be noted that the center frequency of each resonant mode and the frequency band supported by the resonant mode are based on Figure 6The data in the above curve is only an example. The center frequency of the above resonant mode and the frequency band supported by the resonant mode can be adjusted by adjusting the length of the first sub-radiator 11, the length of the second sub-radiator 12, the position of the feeding point B, the position of the first grounding point A, the position of the second grounding point D, setting a grounded FM matching circuit, etc.

[0108] See also Figure 6 In this embodiment, the fourth frequency band T4, the fifth frequency band T5, the sixth frequency band T6 and the seventh frequency band T7 are sequentially connected to form a target application frequency band with a wider bandwidth, for example, the bandwidth is 1.3G, and the target application frequency band covered is 1.42GHz~2.76GHz. It should be noted that by adjusting the effective electrical length, feeding position, first grounding point A and second grounding point D of the first sub-radiator 11 and the second sub-radiator 12, the target application frequency band can also be adjusted to include but not limited to 1.6GHz~3GHz, 2GHz~3.4GHz, 2.6GHz~4GHz, 3.6GHz~5GHz, etc. The bandwidth of the target application frequency band includes but is not limited to 1.8G, 2G, 2.5G, 3G, etc.

[0109] As for the commonly used application frequency bands, this embodiment applies the antenna assembly 100 to the frequency band of 1.42 to 2.76 GHz to simultaneously support the NR 5G frequency bands and LTE 4G frequency bands planned by multiple groups of operators that fall within the frequency band of 1.42 to 2.76 GHz, for example, B32 (1.452 to 1.496 GHz), B21 (1.447 to 1.51 GHz), B1, B3, B7, N1, N3, N7, N41 (2.496 to 2.69 GHz), N75 (1.43 to 1.517 GHz), etc., which is conducive to meeting the frequency band division requirements of different operators. Compared with the first embodiment, this embodiment adds higher efficiency coverage of 1.4GHz~1.5GHz, and can achieve coverage of frequency bands such as (B32+B3+B1+B7), (B75+B3+B1+B7), (B21+B3+B1+B7), (B3+N41), (B3+B1+N7), and (B3+N1), thereby achieving good ENDC / CA performance.

[0110] Of course, in other embodiments, the antenna assembly 100 can also be applied to the frequency band of 5.925 GHz to 7.125 GHz to support the WiFi-6E band and the like.

[0111] Of course, in other embodiments, three of the fourth frequency band T4, the fifth frequency band T5, the sixth frequency band T6 and the seventh frequency band T7 are continuous, and the other one is separated from the three continuous frequency bands. The three frequency bands are continuous to meet a certain bandwidth, and the other one is discontinuous to meet the coverage of a frequency band with a certain frequency span supported by an antenna component 100. For example, an antenna component 100 supports medium and high frequencies and ultra-high frequencies at the same time; or, two of the fourth frequency band T4, the fifth frequency band T5, the sixth frequency band T6 and the seventh frequency band T7 are continuous, and the other two are continuous or discontinuous; or, the fourth frequency band T4, the fifth frequency band T5, the sixth frequency band T6 and the seventh frequency band T7 are all discontinuous, so that the frequency band supported by the antenna component 100 can have a certain frequency span.

[0112] For example, in the coverage (B32+B3 / N3+B1 / N1+B7 / N7), since the frequency band of B32 is (1.452~1.496GHz), the frequency band of B3 / N3 is [1.71~1.785]GHz, the frequency band of B1 / N1 is [1.92~1.98]GHz, and the frequency band of B7 / N7 is [2.5~2.57]GHz, relatively high efficiency is not required within [1.5~1.7)GHz, so the fourth frequency band T4 and the fifth frequency band T5 can be discontinuous in the frequency band [1.5~1.7)GHz. In other embodiments, the fourth frequency band T4 and the fifth frequency band T5 can also be tuned to support medium and high frequency bands such as B3 / N3+B1 / N1, while the sixth frequency band T6 and the seventh frequency band T7 support ultra-high frequency bands, such as N78 (3.3~3.8GHz).

[0113] See also Fig.18 , Fig.18 It is the efficiency of the antenna assembly 100 provided in this application in an extreme full-screen environment. Fig.18 The dashed line is Figure 4 A system radiation efficiency curve of the antenna assembly 100 is provided. Fig.18 The solid line is Figure 4 The total system efficiency curve of the antenna assembly 100 is provided. The present application uses the display screen 200, the metal alloy in the middle frame 420, etc. as the reference ground GND, and the distance between the radiator 10 of the antenna assembly 100 and the reference ground GND is less than or equal to 0.5mm. In other words, the clearance area of ​​the antenna assembly 100 is 0.5mm, which fully meets the environmental requirements of current mobile phones and other electronic devices 1000. Fig.18It can be seen that even in a very small clearance area, the antenna assembly 100 maintains a high efficiency between 1.43 and 2.69 GHz. For example, the efficiency of the antenna assembly 100 between 1.43 and 2.69 GHz is greater than or equal to -5 dB. The -5 dB efficiency is more than 60% relative to the bandwidth, achieving ultra-wideband coverage. Since the fourth resonance mode d to the seventh resonance mode g reinforce each other, the clearance can be made smaller to achieve the same efficiency, which can promote the miniaturization of the electronic device 1000.

[0114] From the above, it can be seen that the antenna assembly 100 provided in the present application still has a high radiation efficiency in an extremely small clearance area. Therefore, the antenna assembly 100 is applied to an electronic device 1000 with a smaller clearance area. Compared with other antennas that require a larger clearance area to have a higher efficiency, the overall volume of the electronic device 1000 can be reduced.

[0115] The generation of the fourth resonance mode d to the seventh resonance mode f is analyzed below from the perspective of current density distribution.

[0116] See also Figure 6 and Fig.19 , the current density of the fourth resonant current R4 of the fourth resonant mode d is at least distributed or mainly distributed between the first free end 111 and the first coupling end 112. Among them, the flow direction of the fourth resonant current R4 between the first free end 111 and the first grounding point A is opposite to the flow direction between the first grounding point A and the first coupling end 112. Specifically, a part of the fourth resonant current R4 flows from the first free end 111 to the first grounding point A, and goes to the ground through the first grounding point A; another part of the fourth resonant current R4 flows from the first coupling end 112 to the first grounding point A, and goes to the ground through the first grounding point A. Alternatively, a part of the fourth resonant current R4 flows from the first grounding point A to the first coupling end 112, and another part of the fourth resonant current R4 flows from the first grounding point A to the first free end 111. It should be noted that there is also a small amount of the fourth resonant current R4 on the second sub-radiator 12, but the current density is relatively weak. Among them, the first sub-radiator 11 is a T-shaped antenna, and the currents on both sides of the first grounding point A of the first sub-radiator 11 flow in opposite directions, presenting a monopole characteristic on the T-shaped antenna. The monopole characteristic enables the first sub-radiator 11 to excite more floor (i.e., reference ground) currents, thereby improving the radiation efficiency and generating a fourth resonant mode d at the fourth frequency f4.

[0117] See also Figure 6 and Fig. 20, the current density of the fifth resonant current R5 of the fifth resonant mode e is at least distributed or mainly distributed between the first free end 111 and the first coupling end 112 and between the second coupling end 121 and the second grounding point D, wherein the flow direction of the fifth resonant current R5 between the first free end 111 and the first grounding point A, the flow direction between the first grounding point A and the first coupling end 112, and the flow direction between the second coupling end 121 and the second grounding point D are all the same. Specifically, the first part of the fifth resonant current R5 flows from the second reference ground GND2 to the second grounding point D, then from the second grounding point D to the second coupling end 121, through the coupling gap 13 to the first coupling end 112, then from the first coupling end 112 to the first grounding point A, through the first grounding point A to the first reference ground GND1, and the fifth resonant current R5 flows from the first grounding point A to the first free end 111. Alternatively, the first part of the fifth resonant current R5 flows from the first reference ground GND1 to the first grounding point A, then flows from the first grounding point A along the first sub-radiator 11 to the first coupling end 112, flows to the second coupling end 121 through the coupling gap 13, then flows from the second coupling end 121 to the second grounding point D, flows to the second reference ground GND2 through the second grounding point D, and the other part of the fifth resonant current R5 flows from the first grounding point A to the first free end 111. It should be noted that the fifth resonant current R5 is mainly distributed in a section of the first sub-radiator 11 and the second sub-radiator 12 where the second grounding point D is close to the first sub-radiator 11, and the section of the second sub-radiator 12 where the second grounding point D is far from the first sub-radiator 11 also has the fifth resonant current R5, but the current density is relatively weak. Among them, the first sub-radiator 11 is a T-shaped antenna, and the currents on both sides of the first grounding point A of the first sub-radiator 11 flow in the same direction, presenting a dipole characteristic on the T-shaped antenna. The dipole characteristic enables the first sub-radiator 11 to stimulate a higher radiation efficiency to generate a fifth resonant mode e at the fifth frequency f5.

[0118] See also Figure 6 and Fig.21, the current density of the sixth resonant current R6 of the sixth resonant mode f is mainly distributed between the first grounding point A and the first coupling end 112, and between the second coupling end 121 and the second free end 122. Among them, the flow direction of the sixth resonant current R6 between the first grounding point A and the first coupling end 112 is opposite to the flow direction between the second coupling end 121 and the second grounding point D. The flow direction of the sixth resonant current R6 between the second grounding point D and the second free end 122 is opposite to the flow direction between the second coupling end 121 and the second grounding point D. Specifically, the first part of the sixth resonant current R6 flows from the first coupling end 112 to the first grounding point A and returns to the ground through the first grounding point A; the second part of the sixth resonant current R6 flows from the second coupling end 121 to the second grounding point D and returns to the ground through the second grounding point D; the third part of the sixth resonant current R6 flows from the second free end 122 to the second grounding point D and returns to the ground through the second grounding point D. Alternatively, the first part of the sixth resonant current R6 flows from the first reference ground GND1 to the first grounding point A, and flows to the first coupling end 112 through the first grounding point A; the second part of the sixth resonant current R6 flows from the second reference ground GND2 to the second grounding point D, and flows to the second coupling end 121 through the second grounding point D, and the third part of the sixth resonant current R6 flows from the second grounding point D to the second free end 122. The second sub-radiator 12 is a T-shaped antenna, and the currents on both sides of the second grounding point D of the second sub-radiator 12 flow in opposite directions, presenting a monopole characteristic on the T-shaped antenna, and the monopole characteristic enables the second sub-radiator 12 to excite more floor (i.e., reference ground) currents, thereby improving the radiation efficiency, so as to generate the sixth resonant mode f at the sixth frequency f6.

[0119] See also Figure 6 and Fig. 22, the current density of the seventh resonant current R7 of the seventh resonant mode g is mainly distributed between the first grounding point A and the first coupling end 112, and between the second coupling end 121 and the second free end 122. The flow direction of the seventh resonant current R7 between the first grounding point A and the first coupling end 112 is opposite to that between the second coupling end 121 and the second grounding point D, and the flow direction of the seventh resonant current R7 between the second grounding point D and the second free end 122 is the same as that between the second coupling end 121 and the second grounding point D. Specifically, the first part of the seventh resonant current R7 flows from the first coupling end 112 to the first grounding point A and returns to the ground through the first grounding point A; the second part of the seventh resonant current R7 flows from the second coupling end 121 to the second grounding point D and returns to the ground through the second grounding point D; the third part of the seventh resonant current R7 flows from the second grounding point D to the second free end 122. Alternatively, the first part of the seventh resonant current R7 flows from the first reference ground GND1 to the first grounding point A, and flows to the first coupling end 112 through the first grounding point A; the second part of the seventh resonant current R7 flows from the second reference ground GND2 to the second grounding point D, and flows to the second coupling end 121 through the second grounding point D, and the third part of the seventh resonant current R7 flows from the second free end 122 to the second grounding point D. The second sub-radiator 12 is a T-shaped antenna, and the currents on both sides of the second grounding point D of the second sub-radiator 12 flow in the same direction, presenting a dipole characteristic on the T-shaped antenna, and the dipole characteristic can form a higher radiation efficiency, thereby generating a seventh resonant mode g at the seventh frequency f7.

[0120] It can be understood that, from the perspective of the resonant current density distribution of the fourth resonant mode d, the fifth resonant mode e, the sixth resonant mode f and the seventh resonant mode g, the resonant currents corresponding to the fourth resonant mode d, the fifth resonant mode e, the sixth resonant mode f and the seventh resonant mode g have partially the same flow direction, for example, the flow direction from the first coupling end 112 to the first grounding point A. In this way, the four resonant modes can enhance each other to increase the frequency band width supported by the antenna assembly 100.

[0121] Based on the above-mentioned resonant current modes, the lengths of the first sub-radiator 11 and the second sub-radiator 12 under various resonant current density distributions may have the following implementations, so that each resonant current excites a resonant mode.

[0122] The fourth resonance mode d to the seventh resonance mode f are generated from the perspective of the fourth resonance frequency f4, the fifth resonance frequency f5, the sixth resonance frequency f6, the seventh resonance frequency f7, and the corresponding wavelength modes.

[0123] See also Figure 6 and Fig.19, the wavelength corresponding to the center frequency of the fourth resonance mode d is the fourth wavelength. Optionally, the fourth resonance mode d supports the first sub-radiator 11 between the first ground point A and the first coupling end 112 to operate in a (1 / 8 to 1 / 4) wavelength mode. Specifically, the length from the first ground point A to the first coupling end 112 is approximately (1 / 8 to 1 / 4) times the fourth wavelength. In other words, the length from the first ground point A to the first coupling end 112 is approximately (1 / 8 to 1 / 4) times the wavelength corresponding to the fourth frequency f4. When a matching circuit for adjusting the frequency offset is not provided on the flow path of the fourth resonance current R4, the length from the first ground point A to the first coupling end 112 is approximately (1 / 4) times the wavelength corresponding to the fourth frequency f4, so that the first sub-radiator 11 from the first ground point A to the first coupling end 112 generates a higher transceiver efficiency at the fourth frequency f4, and then generates resonance at the fourth frequency f4 to form the fourth resonance mode d. When a capacitive grounded matching circuit for the fourth frequency band T4 is provided on the flow path of the fourth resonant current R4, the capacitive loading can shift the resonant frequency toward a low frequency, so the length between the first grounding point A and the first coupling end 112 corresponding to the resonance formed at the fourth frequency f4 can be shortened, for example, reduced to 1 / 8 times of the wavelength corresponding to the fourth frequency f4, etc., further reducing the size of the first sub-radiator 11. In addition, a grounded capacitive circuit can also be provided in the first matching circuit M1, and capacitive loading is performed in the region through which the fourth resonant current R4 flows, so that the resonant frequency shifts toward a low frequency, so the length of the first sub-radiator 11 corresponding to the resonance formed at the fourth frequency f4 is shortened, for example, reduced to 1 / 8 times of the wavelength corresponding to the fourth frequency f4, etc.

[0124] See also Figure 6 and Fig. 20 , the wavelength corresponding to the center frequency of the fifth resonance mode f is the fifth wavelength. Optionally, the fifth resonance mode e supports the first sub-radiator 11 to operate in a (1 / 2) wavelength mode. Specifically, the length of the first sub-radiator 11 is approximately (1 / 2) times the fifth wavelength. In other words, the length of the first sub-radiator 11 is approximately (1 / 2) times the wavelength corresponding to the fifth frequency f5. The length of the first sub-radiator 11 is approximately (1 / 2) times the wavelength corresponding to the fifth frequency f5, so that the first sub-radiator 11 produces a higher transceiver efficiency at the fifth frequency f5, and then resonates at the fifth frequency f5 to form the fifth resonance mode e. Further, by providing a grounded capacitive matching circuit on the density distribution path of the fifth resonance current R5, the length of the first sub-radiator 11 can be further shortened.

[0125] See also Figure 6 and Fig.21, the wavelength corresponding to the center frequency of the sixth resonance mode f is the sixth wavelength. The sixth resonance mode f supports the second sub-radiator 12 between the second coupling end 121 and the second grounding point D to operate in the (1 / 8 to 1 / 4) wavelength mode. Specifically, the length between the second coupling end 121 and the second grounding point D is approximately (1 / 8 to 1 / 4) times the sixth wavelength. In other words, the length between the second coupling end 121 and the second grounding point D is approximately (1 / 8 to 1 / 4) times the wavelength corresponding to the sixth frequency f6. When a matching circuit for adjusting the frequency offset is not provided on the flow path of the sixth resonance current R6, the length between the second coupling end 121 and the second grounding point D is approximately (1 / 4) times the wavelength corresponding to the sixth frequency f6, so that the second sub-radiator 12 between the second coupling end 121 and the second grounding point D generates a higher transceiver efficiency at the sixth frequency f6, and then generates resonance at the sixth frequency f6 to form the sixth resonance mode f. When a capacitively grounded matching circuit is provided on the flow path of the sixth resonant current R6 for the sixth frequency band T6, the capacitive loading can shift the resonant frequency toward a low frequency, so the length between the second coupling end 121 corresponding to the resonance at the sixth frequency f6 and the second grounding point D is shortened, for example, reduced to 1 / 8 times of the wavelength corresponding to the sixth frequency f6, etc., further reducing the size of the second sub-radiator 12. In addition, a grounded capacitive circuit can also be provided in the first matching circuit M1, and capacitive loading is performed in the area through which the sixth resonant current R6 flows, so that the resonant frequency shifts toward a low frequency, so the length between the second coupling end 121 corresponding to the resonance at the sixth frequency f6 and the second grounding point D is shortened to less than 1 / 8 times of the wavelength corresponding to the sixth frequency f6.

[0126] See also Figure 6 and Fig. 22 , the wavelength corresponding to the center frequency of the seventh resonance mode g is the seventh wavelength. The seventh resonance mode g supports the second sub-radiator 12 to operate in the (1 / 2) wavelength mode. The length of the second sub-radiator 12 is approximately (1 / 2) times the seventh wavelength. Among them, the length of the second sub-radiator 12 is approximately 1 / 2 times the seventh wavelength, so as to create conditions for the subsequent antenna assembly 100 to generate a higher signal receiving and transmitting efficiency at the seventh frequency f7. Further, by providing a grounded capacitive matching circuit on the density distribution path of the seventh resonance current R7, the length of the second sub-radiator 12 can be further shortened.

[0127] It can be seen from the antenna assembly 100 provided in the first embodiment and the antenna assembly 100 provided in the second embodiment that the density distribution of the first resonant current R1 is partially the same as the density distribution of the fifth resonant current R5, the density distribution of the second resonant current R2 is the same as the density distribution of the sixth resonant current R6, and the density distribution of the third resonant current R3 is the same as the density distribution of the seventh resonant current R7. In other words, the first embodiment and the second embodiment have the following current density distribution, the first current density is distributed from the first ground point A to the second ground point D, specifically, the first reference ground GND1 flows to the first ground point A, the first ground point A flows to the first coupling end 112, flows to the second coupling end 121 after passing through the coupling slot 13, the second coupling end 121 flows to the second ground point D, and flows to the second reference ground GND2; or, the second reference ground GND2 flows to the second ground point D, the second ground point D flows to the second coupling end 121, flows to the first coupling end 112 after passing through the coupling slot 13, the first coupling end 112 flows to the first ground point A, and flows to the first reference ground GND1.

[0128] The second current density is distributed between the first grounding point A and the first coupling end 112, and between the second coupling end 121 and the second free end 122. The flow direction of the sixth resonant current R6 between the first grounding point A and the first coupling end 112 is opposite to the flow direction between the second coupling end 121 and the second grounding point D. The second current sealing distribution supports the antenna assembly 100 provided in the first embodiment and the antenna assembly 100 provided in the second embodiment to generate a first sub-resonance mode, wherein the length between the second coupling end 121 and the second grounding point D corresponds to 1 / 4 wavelength of the center frequency of the first sub-resonance mode, and further, a grounded capacitive matching circuit is provided on the second current density distribution path, so that the length between the second coupling end 121 and the second grounding point D is shortened to correspond to 1 / 8 wavelength of the center frequency of the first sub-resonance mode.

[0129] The third current density distribution is between the first ground point A and the first coupling end 112, and between the second coupling end 121 and the second free end 122. The flow direction of the seventh resonant current R7 between the first ground point A and the first coupling end 112 is opposite to that between the second coupling end 121 and the second ground point D, and the flow direction of the seventh resonant current R7 between the second ground point D and the second free end 122 is the same as that between the second coupling end 121 and the second ground point D. The third current sealing distribution supports the antenna assembly 100 provided in the first embodiment and the antenna assembly 100 provided in the second embodiment to generate a second sub-resonance mode, wherein the length of the second sub-radiator 12 corresponds to 1 / 2 wavelength of the center frequency of the second sub-resonance mode. Further, by providing a grounded capacitive matching circuit on the third current density distribution path, the length of the second sub-radiator 12 can be further shortened.

[0130] Furthermore, by adjusting the length of the first sub-radiator 11, the length of the second sub-radiator 12, the position of the first grounding point A, the position of the feeding point B, and the position of the second grounding point D, the positions of the fourth frequency f4, the fifth frequency f5, the sixth frequency f6, and the seventh frequency f7 can be adjusted to make the fourth frequency f4, the fifth frequency f5, the sixth frequency f6, and the seventh frequency f7 close to each other, so that the fourth frequency band T4, the fifth frequency band T5, the sixth frequency band T6, and the seventh frequency band T7 are continuous, and can support a wider bandwidth and cover the frequency bands that need to be covered, thereby improving the throughput of the antenna assembly 100 and improving the Internet access rate of the electronic device 1000.

[0131] In the following, the frequency shift of each resonant mode is adjusted by setting a grounded matching circuit on the aperture, and the length of the first sub-radiator 11 and the second sub-radiator 12 is shortened to further shorten the stacking size of the entire antenna assembly 100 .

[0132] See also Fig.23 , the first matching circuit M1 includes a first sub-circuit M11. The first sub-circuit M11 is electrically connected to the feeding point B, and the other end of the first sub-circuit M11 is electrically connected to the third reference ground GND3. The first sub-circuit M11 is capable of adjusting the frequency deviation of the resonant mode of the resonant current passing through the first sub-circuit M11. The first sub-circuit M11 is capacitive when operating in the frequency band supported by the fourth resonant mode d (fourth frequency band T4), the frequency band supported by the fifth resonant mode e (fifth frequency band T5), the frequency band supported by the sixth resonant mode f (sixth frequency band T6) and the frequency band supported by the seventh resonant mode g (seventh frequency band T7). The first sub-circuit M11 can move the center frequencies of the fourth resonance mode d, the fifth resonance mode e, the sixth resonance mode f, and the seventh resonance mode g toward the low frequency direction. The first sub-circuit M11 is similar to "connecting an effective electrical length" between the first grounding point A of the first radiator 11 and the first coupling end 112. Therefore, when the center frequency position to be resonated remains unchanged, the actual length of the first sub-radiator 11 between the first grounding point A and the first coupling end 112 can be shortened by setting the first sub-circuit M11. In this way, the first sub-radiator 11 is miniaturized, and the length between the first grounding point A and the first coupling end 112 can be shortened to 1 / 8 of the wavelength corresponding to the fourth frequency f4.

[0133] Optionally, the first sub-circuit M11 includes but is not limited to a capacitor, a series or parallel circuit containing a capacitor, an inductor, and a resistor, etc.

[0134] See also Fig.24The first sub-radiator 11 also has a first frequency modulation point P1 located between the first free end 111 and the first ground point A. The antenna assembly 100 also includes a second matching circuit M2. One end of the second matching circuit M2 is electrically connected to the first frequency modulation point P1. The other end of the second matching circuit M2 is electrically connected to the fourth reference ground GND4.

[0135] The second matching circuit M2 is capacitive when operating in the frequency band supported by the fourth resonance mode d (the fourth frequency band T4) and the frequency band supported by the fifth resonance mode e (the fifth frequency band T5), and can move the center frequencies of the fourth resonance mode d and the fifth resonance mode e toward the low frequency side. Therefore, when the center frequency position to be resonated remains unchanged, the actual length between the first free end 111 and the first grounding point A of the first sub-radiator 11 can be relatively reduced. The actual length between the first grounding point A and the first coupling end 112 of the first sub-radiator 11 can be shortened by setting the second matching circuit M2. In this way, the miniaturization of the first sub-radiator 11 is achieved, and the length between the first grounding point A and the first coupling end 112 can be shortened to 1 / 8 of the wavelength corresponding to the fourth frequency f4.

[0136] The second matching circuit M2 includes multiple selection branches formed by switches, capacitors, inductors, resistors, etc., and adjustable devices such as variable capacitors. These adjustable devices are used to adjust the positions of the fourth resonant mode d and the fifth resonant mode e. The change of the mode position can also improve the performance of a single frequency band and better meet the ENDC / CA combination of different frequency bands.

[0137] See also Fig.25, the second sub-radiator 12 also has a second matching point P2 located between the second coupling end 121 and the second grounding point D. The antenna assembly 100 also includes a third matching circuit M3. One end of the third matching circuit M3 is electrically connected to the second matching point P2. The other end of the third matching circuit M3 is electrically connected to the fifth reference ground GND5. The third matching circuit M3 is capacitive when operating in the frequency band supported by the fifth resonance mode e, the frequency band supported by the sixth resonance mode f, and the frequency band supported by the seventh resonance mode g, and can move the center frequencies of the fifth resonance mode e, the sixth resonance mode f, and the seventh resonance mode g toward the low frequency side, so when the center frequency position to be resonated remains unchanged, the actual length between the second coupling end 121 of the second sub-radiator 12 and the second grounding point D can be relatively reduced. The third matching circuit M3 is similar to "connecting an effective electrical length" to the second sub-radiator 12 between the second coupling end 121 and the second grounding point D, so when the center frequency position to be resonated remains unchanged, the actual length between the second coupling end 121 of the second sub-radiator 12 and the second grounding point D can be shortened by setting the third matching circuit M3. In this way, the second sub-radiator 12 can be miniaturized, and the length between the second coupling end 121 and the second ground point D can be shortened to 1 / 8 of the wavelength corresponding to the sixth frequency f6.

[0138] The third matching circuit M3 includes multiple selection branches formed by switches, capacitors, inductors, resistors, etc., and adjustable devices such as variable capacitors. These adjustable devices are used to adjust the positions of the three resonant modes. The change of the mode position can also improve the performance of a single frequency band and better meet the ENDC / CA combination of different frequency bands.

[0139] See also Fig.26 , the second sub-radiator 12 also has a third matching point P3 located between the second ground point D and the second free end 122. The antenna assembly 100 also includes a fourth matching circuit M4. One end of the fourth matching circuit M4 is electrically connected to the third matching point P3. The other end of the fourth matching circuit M4 is electrically connected to the sixth reference ground GND6. The fourth matching circuit M4 is capacitive when operating in the frequency band supported by the sixth resonance mode f and the frequency band supported by the seventh resonance mode g, and can move the center frequencies of the sixth resonance mode f and the seventh resonance mode g toward the low frequency side. Therefore, when the center frequency position to be resonated remains unchanged, the actual length between the second coupling end 121 of the second sub-radiator 12 and the second ground point D can be relatively reduced. In this way, the miniaturization of the second sub-radiator 12 is achieved, and the length between the second coupling end 121 and the second ground point D can be shortened to 1 / 8 wavelength corresponding to the sixth frequency f6.

[0140] The fourth matching circuit M4 includes multiple selection branches formed by switches, capacitors, inductors, resistors, etc., and adjustable devices such as variable capacitors. These adjustable devices are used to adjust the position of the resonant mode. The change of the mode position can also improve the performance of a single frequency band and better meet the ENDC / CA combination of different frequency bands.

[0141] It can be understood that when actually designing the antenna component 100, any one, two or three of the first sub-circuit M11 of the first matching circuit M1, the second matching circuit M2, the third matching circuit M3 and the fourth matching circuit M4 can be selected and arranged at corresponding positions, or the first sub-circuit M11 of the first matching circuit M1, the second matching circuit M2, the third matching circuit M3 and the fourth matching circuit M4 can all be arranged at corresponding positions. In this way, the stacking size of the radiator 10 can be further reduced.

[0142] The first sub-circuit M11, the second matching circuit M2, and the third matching circuit M3 of this embodiment can also be applied to the antenna assembly 100 provided in the first embodiment, and will not be described in detail here.

[0143] The general structure of the antenna assembly 100 provided in the third embodiment is the same as that of the antenna assembly 100 provided in the second embodiment, and the main difference is that, see Fig. 27 , the position of the feeding point B is located between the second coupling end 121 and the second grounding point D. The antenna assembly 100 provided in this embodiment can also form a double "T" shaped radiator, and a current density distribution of a monopole mode and a current density distribution of a dipole mode can be generated on each "T" shaped radiator, so four resonant modes can also be generated, thereby forming a wider bandwidth or supporting more frequency bands. The current density distribution, four resonant modes, the wavelength mode corresponding to each resonant mode, and the adjustment of the length of the radiator by adjusting the frequency offset through the matching circuit in this embodiment can all refer to the second embodiment, and will not be repeated here.

[0144] The functions of the antenna assembly 100 provided in any of the above embodiments are further introduced below in conjunction with the accompanying drawings. For example, the antenna assembly 100 can perform proximity detection of the subject to be measured while realizing the transmission and reception of antenna signals. The subject to be measured includes but is not limited to the human head, human hands, etc. It can be understood that the radiator 10 is a conductive material, and the radiator 10 can also serve as an induction electrode for proximity signals while serving as an antenna signal transmission and reception port. The antenna assembly 100 provided in the present application integrates the dual functions of receiving and transmitting electromagnetic wave signals and proximity sensing and is small in size. When the antenna assembly 100 is applied to an electronic device 1000, it ensures that the electronic device 1000 has a communication function and a proximity detection function while also making the overall size of the electronic device 1000 small.

[0145] Specifically, the antenna assembly 100 further includes a direct current isolation assembly 30 , a filter assembly 50 , a detection assembly 40 and a controller (not shown).

[0146] The following is an example of the connection method of the DC isolation component 30 and the filter component 50 in combination with the antenna component 100 provided in the second embodiment.

[0147] See also Fig.28 In the first connection mode of the DC isolation component 30 and the filter component 50, the DC isolation component 30 is electrically connected between the feeding point B of the first sub-radiator 11 and the signal source 20 (further, the DC isolation component 30 is electrically connected between the feeding point B and the first matching circuit M1), and is also electrically connected between the first grounding point A of the first sub-radiator 11 and the first reference ground GND1. The DC isolation component 30 is used to block the DC current generated by the first reference ground GND1, the signal source 20 and the first matching circuit M1, and the RF signal transmitted and received by the radiator 10 (the RF signal includes the RF signal between the radiator 10 and the ground GND, and the RF signal between the radiator 10 and the first matching circuit M1), so as to support the human body detection function and improve the detection accuracy when the human body is close to the antenna component 100.

[0148] For details, please refer to Fig.28 , the DC isolation component 30 includes a first sub-isolator 31 and a second sub-isolator 32. The first sub-isolator 31 is electrically connected between the first ground point A and the first reference ground GND1. The second sub-isolator 32 is electrically connected between the feeding point B and the first matching circuit M1. By setting the DC isolation component 30, the induction signal generated when the subject to be measured is close to the radiator 10 will not affect the antenna component 100 for receiving and transmitting antenna signals. Specifically, the first sub-isolator 31 and the second sub-isolator 32 are both capacitive devices. For example, the first sub-isolator 31 and the second sub-isolator 32 both include capacitors. Further, the first sub-isolator 31 and the second sub-isolator 32 are both capacitors, and the first sub-isolator 31 and the second sub-isolator 32 present a small impedance to the ground for the radio frequency signal supported by the antenna component 100. For example, the values ​​of the first sub-isolator 31 and the second sub-isolator 32 include but are not limited to 47pF or 22PF. The first sub-isolator 31 has an isolation effect on the DC current of the first reference ground GND1, and the second sub-isolator 32 has an isolation effect on the DC current of the first matching circuit M, so as to support the human body detection function and improve the detection accuracy when the human body is close to the antenna component 100. In other words, the DC isolation component 30 makes the first sub-radiator 11 "suspended" relative to the DC current, and can smoothly transmit the RF signal from the first matching circuit M1 to the feeding point B, and transmit the RF signal from the first ground point A to the first reference ground GND1.

[0149] See also Fig.28One end of the filter component 50 is electrically connected to a side of the isolation component 30 close to the first sub-radiator 11 or electrically connected to any position of the first sub-radiator 11. The filter component 50 is used to block the radio frequency signal received and sent by the first sub-radiator 11 and conduct the induction signal generated by the subject to be tested when it is close to the first radiator 11, so that the radio frequency signal received and sent by the first sub-radiator 11 will not affect the detection accuracy of the detection component 40 detecting the induction signal.

[0150] Specifically, the filter assembly 50 is electrically connected between the first sub-isolator 31 and the first grounding point A; or, is electrically connected between the second sub-isolator 32 and the feeding point B; or is electrically connected to any position of the first sub-radiator 11. The filter assembly 50 includes an inductor device or is an inductor device. For example, the filter assembly 50 is an inductor. The filter assembly 50 presents a large impedance to the radio frequency signal supported by the antenna assembly 100, and the inductance value is, for example, 82nH.

[0151] The above DC isolation component 30 and filter component 50 realize that the induction signal and the radio frequency signal can act simultaneously without interfering with each other.

[0152] The detection component 40 is electrically connected to the other end of the filter component 50, and is used to detect the magnitude of the induction signal generated by the radiator 10. Optionally, the detection component 40 is a device for detecting current signals, voltage signals or inductance signals, such as a miniature galvanometer, a miniature current transformer, a current comparator, a voltage comparator, and the like.

[0153] When the human skin surface is close to the first sub-radiator 11, the human skin surface and the first sub-radiator 11 can be equivalent to two electrode plates of a capacitor. When the human head approaches, the first sub-radiator 11 can sense the change in the amount of charge brought by the human head. The filter component 50 is electrically connected to the first sub-radiator 11. The above-mentioned change in the amount of charge forms an induction signal, which is transmitted to the detection component 40 through the filter component 50. According to the capacitance calculation formula, C=εS / 4πkd, where d is the distance between the human body (head or hand) and the radiator, so when the capacitance increases, that is, the intensity of the induction signal detected by the detection component 40 increases, it means that the human body is approaching; when the capacitance decreases, that is, the intensity of the induction signal detected by the detection component 40 decreases, it means that the human body is moving away. The detection component 40 detects the change in the above-mentioned induction signal to determine whether the human head is close to the first sub-radiator 11 of the antenna component 100, thereby intelligently reducing the specific absorption rate of the human head to electromagnetic waves.

[0154] Optionally, at least part of the DC isolation component 30 can also serve as a part of the first matching circuit M1. For example, the second sub-isolator 32 is a capacitor. The second sub-isolator 32 is used to block the induction signal and conduct the radio frequency signal. At the same time, it can also serve as a part of the first matching circuit M1 to tune the impedance matching between the signal source 21 and the feeding point B to reduce the loss of the radio frequency signal fed into the radiator 10 and improve the signal conversion efficiency received and sent by the radiator 10; it is also used to adjust the frequency deviation of the resonant mode generated on the first sub-radiator 11, etc., thereby realizing multiple uses of the device, reducing the number of devices and the space occupied, and improving the integration of the device.

[0155] When the antenna assembly 100 is provided with a second matching circuit M2, a third matching circuit M3, and a fourth matching circuit M4, the direct-current isolation component 30 is also provided between the first frequency modulation point P1 and the second matching circuit M2, between the second frequency modulation point P2 and the third matching circuit M3, and between the third frequency modulation point P3 and the fourth matching circuit M4, so that the first sub-radiator 11 is in a "suspended" state relative to the induction signal, thereby preventing the induction signal generated by the first sub-radiator 11 from affecting the radio frequency signal, and promoting the antenna assembly 10 to simultaneously transmit and receive antenna signals and generate induction signals. The direct-current isolation component 30 for isolating the induction signal at the first frequency modulation point P1 can be used as a part of the second matching circuit M2, and is used to adjust the impedance of the second matching circuit M2, and adjust the frequency band supported by the fourth resonance mode d and the fifth resonance mode e. The direct-current isolation component 30 for isolating the induction signal at the second frequency modulation point P2 can be used as a part of the third matching circuit M3, and is used to adjust the impedance of the third matching circuit M3, and adjust the frequency band supported by the fifth resonance mode e, the sixth resonance mode f, and the seventh resonance mode g. The DC isolation component 30 for isolating the induced signal at the third frequency modulation point P3 can be used as a part of the fourth matching circuit M4 to adjust the impedance of the fourth matching circuit M4 and the frequency band supported by the sixth resonance mode f and the seventh resonance mode g.

[0156] The antenna assembly 100 and the electronic device 1000 provided in the present application realize the dual functions of the communication performance of the antenna assembly 100 and the sensing of the subject to be measured by reusing the radiator 10 on the antenna assembly 100 as a sensing electrode for detecting the approach of the human body to be measured, and separating the sensing signal and the radio frequency signal through the direct current isolation assembly 30 and the filtering assembly, thereby increasing the function of the antenna assembly 100, further improving the utilization rate of the device, and reducing the overall volume of the electronic device 1000.

[0157] In the second connection mode of the isolation component 30 and the filter component 50, please refer to Fig.29, the DC isolation component 30 is electrically connected between the second grounding point D of the second sub-radiator 12 and the second reference ground GND2. The specific structure of the DC isolation component 30 and the principle of isolating the induction signal and conducting the radio frequency signal can refer to the connection method of the first DC isolation component 30 and the filter component 50, which will not be repeated here. One end of the filter component 50 is electrically connected to the side of the DC isolation component 30 close to the second sub-radiator 12 (for example, between the DC isolation component 30 and the second grounding point D) or electrically connected to any position of the second sub-radiator 12. The second sub-radiator 12 serves as a sensing electrode or as a main sensing electrode. In this embodiment, the second sub-radiator 12 is a sensing electrode, and the second sub-radiator 12 is in a suspended state relative to the DC current.

[0158] In the third connection mode of the isolation component 30 and the filter component 50, please refer to Fig.30 The DC isolation component 30 is electrically connected between the feeding point B of the first sub-radiator 11 and the first matching circuit M1, between the first grounding point A of the first sub-radiator 11 and the first reference ground GND1, and between the second grounding point D of the second sub-radiator 12 and the second reference ground GND2, so that the first sub-radiator 11 and the second sub-radiator 12 both serve as sensing electrodes.

[0159] Specifically, the DC isolation component 30 includes a first sub-isolator 31, a second sub-isolator 32 and a third sub-filter 33. The first sub-isolator 31 is electrically connected between the feeding point B and the first matching circuit M1. The second sub-isolator 32 is electrically connected between the first grounding point A and the first reference ground GND1. The third sub-filter 33 is electrically connected between the second grounding point D and the second reference ground GND2.

[0160] The filtering component 50 includes a first sub-filter 51 and a second sub-filter 52, wherein the first sub-filter 51 is electrically connected between the first sub-isolator 31 and the feeding point B, or between the second sub-isolator 32 and the first grounding point A, or any position of the first sub-radiator 11; the second sub-filter 52 is electrically connected between the third sub-filter 33 and the second grounding point D, or any position of the second sub-radiator 12.

[0161] The detection component 40 is electrically connected to the first sub-filter 51 and the second sub-filter 52. Specifically, the two channels of the detection component 40 are electrically connected to the first sub-filter 51 and the second sub-filter 52. In this embodiment, the first sub-radiator 11 and the second sub-radiator 12 can both serve as detection electrodes for sensing the approach of the subject to be detected.

[0162] When a human body approaches the first sub-radiator 11, the charge on the first sub-radiator 11 changes, and the detection component 40 can directly sense the induction signal through the first sub-filter 51; when a human body approaches the second sub-radiator 12, the charge on the second sub-radiator 12 changes, and the detection component 40 can directly sense the induction signal through the second sub-filter 52. The detection component 40 detects the approach of a human body by detecting the induction signal. In this case, all radiators 10 can be used as induction electrodes to make the induction area larger, which can improve the utilization rate of the radiator 10. Only one detection component 40 is needed, which can save the number of components of the antenna component 100 and save space.

[0163] In other embodiments, the detection component 40 includes a first sub-detector and a second sub-detector. The first sub-detector is electrically connected to the other end of the first sub-filter 51, and the second sub-detector is electrically connected to the other end of the second sub-filter 52. In other words, the sensing signals detected by the first sub-radiator 11 and the second sub-radiator 12 are respectively detected by two independent sub-detectors. This embodiment can be used when the first sub-radiator 11 and the second sub-radiator 12 are located on different sides of the electronic device 1000. The radiator 10 of the antenna component 100 can detect the human body approaching from different sides of the electronic device 1000, thereby improving the detection range while occupying a smaller space.

[0164] Specifically, the first sub-isolator 31 , the second sub-isolator 32 and the third sub-filter 33 are all isolation capacitors, and the first sub-filter 51 and the second sub-filter 52 are all isolation inductors.

[0165] The controller is electrically connected to the detection component 40. The detection component 40 receives the sensing signal and converts it into an electrical signal and transmits it to the controller. The controller is used to detect the distance between the subject to be detected and the radiator 10 according to the size of the sensing signal, and then determine whether the human body is close to the radiator 10 (the first sub-radiator 11, or the second sub-radiator 12, or the first sub-radiator 11 and the second sub-radiator 12), and adjust the power of the signal source 20 when the subject to be detected is close to or away from the radiator 10. Specifically, the controller can adjust the power of the signal source 20 (that is, the power of the antenna component 100) according to different scenarios.

[0166] For example, when a human head is close to the radiator 10 of the antenna assembly 100, the controller can reduce the power of the antenna assembly 100 to reduce the specific absorption rate of the electromagnetic waves radiated by the antenna assembly 100. When a human hand blocks the radiator 10 of the antenna assembly 100 in the radiation direction, if other spare antenna assemblies 100 (i.e., antenna assemblies 100 that can cover the same frequency band) are provided in the electronic device 1000, the controller can turn off the blocked antenna assembly 100 and turn on the antenna assembly 100 that is not blocked in other positions. In this way, when the human hand blocks the antenna assembly 100, the communication quality of the electronic device 1000 can be ensured by intelligently switching the antenna assembly 100; if no other spare antenna assembly 100 is provided in the electronic device 1000, the controller can control the power of the antenna assembly 100 to increase to compensate for the problem of reduced efficiency caused by the hand blocking the radiator 10.

[0167] Of course, the controller also controls other applications on the electronic device 1000 according to the detection results of the detection component 40. For example, the controller detects that a human body is approaching and the electronic device 1000 is in a call state according to the detection results of the detection component 40, and controls the screen brightness of the display screen 300 to turn off to save power when the electronic device 1000 is on a call; the controller also detects that a human body is moving away and the electronic device 1000 is in a call state according to the detection results of the detection component 40, and controls the screen brightness of the display screen 300 to turn on.

[0168] It can be understood that the antenna assembly 100 provided in the first embodiment and the antenna assembly 100 provided in the third embodiment can also adopt the same principle as above to set the DC isolation assembly 30, the filtering assembly 50, and the detection assembly 40, which will not be described one by one here.

[0169] The present application does not limit the specific location where the radiator 10 of the antenna assembly 100 is installed in the electronic device 1000 .

[0170] The electronic device 1000 includes a reference ground GND, a circuit board 500, etc., which are arranged in a housing 200. The reference ground GND includes but is not limited to an alloy in the middle plate 410. The first ground point A and the second ground point D are both electrically connected to the reference ground GND. The signal source 20, the first matching circuit M1, the second matching circuit M2, the third matching circuit M3, and the fourth matching circuit M4 are all arranged on the circuit board 500.

[0171] The radiator 10 of the antenna assembly 100 is integrated into the housing 200 , or disposed on the surface of the housing 200 , or disposed in the space surrounded by the housing 200 .

[0172] Optionally, at least part of the radiator 10 is integrated with the frame 210 of the housing 200. For example, the frame 210 is made of metal. The first sub-radiator 11, the second sub-radiator 12 and the frame 210 are all integrated into one. The coupling gap 13 between the first sub-radiator 11 and the second sub-radiator 12 is filled with an insulating material. Of course, in other embodiments, the radiator 10 can also be integrated with the back cover 220. In other words, the first sub-radiator 11 and the second sub-radiator 12 are integrated into a part of the housing 200.

[0173] Optionally, when the radiator 10 is used for human proximity detection and the radiator 10 is integrated with the frame 210, an insulating film can be set on the surface of the radiator 10. Since the surface of human skin has an electric charge, a capacitor structure is formed between the surface of human skin and the radiator 10, and then the radiator 10 senses the signal changes caused by the proximity of the human skin surface.

[0174] Optionally, the first sub-radiator 11 and the second sub-radiator 12 are formed on the surface of the frame 210 (for example, the inner surface or the outer surface of the frame). Specifically, the basic forms of the first sub-radiator 11 and the second sub-radiator 12 include but are not limited to patch radiators, formed on the inner surface of the frame 210 by laser direct structuring (LDS) and print direct structuring (PDS) and other processes. In this embodiment, the material of the frame 210 can be a non-conductive material (non-shielding material for electromagnetic wave signals, or a wave-transmitting structure). Of course, the above-mentioned radiator 10 can also be arranged on the surface of the back cover 220.

[0175] Optionally, the first sub-radiator 11 and the second sub-radiator 12 are arranged on a flexible circuit board, a hard circuit board or other supporting board. The first sub-radiator 11 and the second sub-radiator 12 can be integrated on a flexible circuit board, and the flexible circuit board is attached to the inner surface of the middle frame 420 by adhesive or the like. In this embodiment, the material of the frame 210 can be a non-conductive material. Of course, the above-mentioned radiator 10 can also be arranged on the inner surface of the back cover 220.

[0176] The above is a specific structure of an antenna assembly 100 for detecting proximity of a subject to be detected and transmitting antenna signals, as well as the installation positions of various components in the antenna assembly 100 in the electronic device 1000. Of course, in this application, the number of antenna assemblies 100 is one or more.

[0177] The present application does not limit the specific side where the antenna assembly 100 is located in the electronic device 1000. The reference ground GND is in the shape of a rectangular plate. The reference ground GND includes multiple sides connected in sequence. The connection between two adjacent sides is a corner. The radiator 10 of at least one antenna assembly 100 is arranged relative to two intersecting sides and a corner; and / or, the radiators 10 of at least one antenna assembly 100 are all arranged relative to one side. The following embodiments are used for specific examples.

[0178] See also Fig.31 , the reference ground GND includes a first side 61 and a second side 62 that are arranged opposite to each other, and a third side 63 and a fourth side 64 that are connected between the first side 61 and the second side 62. The connection between two adjacent side edges is a corner 65. Among them, the first side 61 is the top edge of the reference ground GND (with the state of the user holding the electronic device 1000 in vertical screen as a reference), and the second side 62 is the bottom edge of the reference ground GND. Taking the antenna assembly 100 being arranged in the upper right corner as an example, optionally, the entire first sub-radiator 11 is arranged opposite to the first side 61, a part of the second sub-radiator 12 is arranged opposite to the first side 61, and another part of the second sub-radiator 12 is arranged opposite to the fourth side 64, the first grounding point A is electrically connected to the first side 61, and the second grounding point D is electrically connected to the corner 65 between the first side 61 and the fourth side 64.

[0179] See also Fig.31 , the frame 210 includes a plurality of side frames connected end to end. Among the plurality of side frames of the frame 210, two adjacent side frames intersect, for example, two adjacent side frames are connected by a circular arc chamfer transition. The plurality of side frames include a top frame 211 and a bottom frame 212 arranged relatively to each other, and a first side frame 213 and a second side frame 214 connected between the top frame 211 and the bottom frame 212. Among them, the top frame 211 is the edge away from the ground when the operator holds the electronic device 1000 and uses it toward the front of the electronic device 1000, and the bottom frame 212 is the edge facing the ground. The connection between the two adjacent side frames is a corner portion 216. Among them, the top frame 211 and the bottom frame 212 are parallel and equal. The first side frame 213 and the second side frame 214 are parallel and equal. The length of the first side frame 213 is greater than the length of the top frame 211. The top frame 211 is disposed opposite to the first side edge 61 , the bottom frame 212 is disposed opposite to the second side edge 62 , the first side frame 213 is disposed opposite to the third side edge 63 , and the second side frame 214 is disposed opposite to the fourth side edge 64 .

[0180] The first sub-radiator 11 is integrated with the top frame 211 , and the second sub-radiator 12 is integrated with a portion of the top frame 211 , a corner portion 216 between the top frame 211 and the second side frame 214 , and a portion of the second side frame 214 .

[0181] The positions of the first sub-radiator 11 and the second sub-radiator 12 are interchangeable.

[0182] Optional, see Fig.32 The entire second sub-radiator 12 is arranged opposite to the first side 61, a part of the first sub-radiator 11 is arranged opposite to the first side 61, another part of the first sub-radiator 11 is arranged opposite to the fourth side 64, the second grounding point D is electrically connected to the first side 61, and the first grounding point A is electrically connected to the corner between the first side 61 and the fourth side 64.

[0183] Furthermore, the second sub-radiator 12 is integrated with the top frame 211 , and the first sub-radiator 11 is integrated with a portion of the top frame 211 , a corner portion 216 between the top frame 211 and the second side frame 214 , and a portion of the second side frame 214 .

[0184] By placing the antenna assembly 200 at the corner 25 of the reference ground GND, the antenna assembly 100 is also placed at the corner 216 of the electronic device 1000. On the one hand, the clearance environment of the electronic device 1000 is relatively good, which is beneficial to improving the radiation efficiency of the antenna assembly 100. On the other hand, the antenna assembly 100 is placed at the corner of the electronic device 1000, which is easier to excite the floor current, thereby improving the radiation efficiency.

[0185] See also Fig.33 The antenna assembly 100 may be entirely disposed on one side of the electronic device 1000. For example, all radiators 10 of the antenna assembly 100 are disposed opposite to the fourth side edge 64. Furthermore, all radiators 10 are integrated with the second side frame 214.

[0186] In other words, the antenna assembly 100 can be located at any position of the electronic device 1000 so that the grounding of the antenna assembly 100 can match the grounding position within the electronic device 1000 .

[0187] The above mainly describes the layout of one antenna assembly 100 in the electronic device 1000. The following describes an example of the layout of multiple antenna assemblies 100 in the electronic device 1000.

[0188] See also Fig.34, the antenna assembly 100 includes a first antenna assembly 110 and a second antenna assembly 120. The structures of the first antenna assembly 110 and the second antenna assembly 120 are the same or different. The frequency bands covered by the first antenna assembly 110 and the second antenna assembly 120 are the same or different. In this embodiment, the frequency bands covered by the first antenna assembly 110 and the second antenna assembly 120 are at least partially the same. For example, the first antenna assembly 110 and the second antenna assembly 120 can both cover the 1.4 GHz to 2.7 GHz frequency band with high efficiency. The first antenna assembly 110 and the second antenna assembly 120 are respectively arranged on different sides of the electronic device 1000, so that the electronic device 1000 can switch between the first antenna assembly 110 and the second antenna assembly 120 when supporting the 1.4 GHz to 2.7 GHz frequency band.

[0189] Optionally, the first antenna assembly 110 and the second antenna assembly 120 are respectively disposed at or near two corner portions 216 disposed diagonally. It can be understood that the first antenna assembly 110 is disposed at the corner portion 216 means that at least part of the radiator 10 of the first antenna assembly 110 is integrated into the corner portion 216, or is printed, laser-formed on the surface of the corner portion 216, or is attached to the surface of the corner portion 216. The first antenna assembly 110 is close to the corner portion 216 means that the radiator 10 of the first antenna assembly 110 is disposed in the housing 200 (including the frame 210 and the back cover 220), or is integrated on the housing 200 and the distance between the radiator 10 and the corner portion 216 is small (for example, the distance is less than or equal to 1 cm, but not limited to this size). The second antenna assembly 120 is disposed at or near the corner portion 216, which can refer to the above description and will not be repeated here.

[0190] Specifically, the first antenna assembly 110 is disposed on the top frame 211, and is close to the corner 216 between the top frame 211 and the second side frame 214. The second antenna assembly 120 is disposed on the bottom frame 212, and is close to the corner between the bottom frame 212 and the first side frame 213. On the first aspect, the coupling slot 13 of the first antenna assembly 110 and the coupling slot 13 of the second antenna assembly 120 are respectively disposed on the top frame 211 and the bottom frame 212, without affecting the first side frame 213 and the second side frame 214, thereby reducing the fracture processing on the larger side frame, improving the structural strength of the frame 210, and having little impact on the appearance of the electronic device 1000; on the second aspect, the common posture of the electronic device 1000 is the vertical screen posture of the user holding it with the left hand or the right hand, and the first antenna assembly 110 and the second antenna assembly 120 are respectively disposed on the top frame 211 and the bottom frame 212, so as to cooperate with the common vertical screen posture of the electronic device 1000. , when held in the left hand or the right hand, it will not be blocked by the hand, the radiation efficiency of the antenna component 100 is high, and the communication quality of the electronic device 1000 is good when in use; thirdly, since the first antenna component 110 and the second antenna component 120 are respectively close to the two diagonally arranged corner portions 216, the first antenna component 110 and the second antenna component 120 can sense the approach of the human body from the top side (the side where the top frame 211 is located), the bottom side (the side where the bottom frame 212 is located), the left side (the side where the first side frame 213 is located), and the right side (the side where the second side frame 214 is located) of the electronic device 1000, and a smaller number of antenna components 100 are used to achieve proximity sensing in a larger range.

[0191] In other embodiments, the first antenna assembly 110 and the second antenna assembly 120 are respectively disposed on the first side frame 213 and the second side frame 214 , and are respectively close to the diagonally disposed corner portions 216 .

[0192] Optional, see Fig.34 , the first antenna component 110 and the second antenna component 120 are both used to detect the approach of the subject to be measured. The first antenna component 110 and the second antenna component 120 are both provided with a direct current isolation component 30 and a filter component 50, wherein the connection method of the direct current isolation component 30 and the filter component 50 can refer to the above-mentioned embodiment. The filter component 50 of the first antenna component 110 and the filter component 50 of the second antenna component 120 can be electrically connected to different signal channels of the same detection component 40, so as to receive the induction signals generated by the first antenna component 110 and the second antenna component 120 when the subject to be measured approaches through the same detection component 40.

[0193] The electronic device 1000 also includes a controller (not shown), which is electrically connected to the first antenna assembly 110, the second antenna assembly 120 and the detection assembly 40, and is used to adjust the power of the first antenna assembly 110 and the second antenna assembly 120 according to the magnitude of the induction signal generated by the first antenna assembly 110 and the second antenna assembly 120. For example, when the human head is close to the first antenna assembly 110, the power of the first antenna assembly 110 is reduced, or the first antenna assembly 110 is turned off, and the second antenna assembly 120 is switched to work, so as to reduce the specific absorption rate of the electromagnetic waves radiated by the electronic device 1000. Alternatively, when the human hand blocks the first antenna assembly 110, the power of the first antenna assembly 110 is increased or the second antenna assembly 120 is switched to work, so as to ensure that the electronic device 1000 has good transceiver efficiency in different blocking holding scenarios.

[0194] For further information, see Fig.35 , at least one antenna assembly 100 further includes a third antenna assembly 130 and a fourth antenna assembly 140. The structures of the first antenna assembly 110, the second antenna assembly 120, the third antenna assembly 130 and the fourth antenna assembly 140 are the same or different.

[0195] At least part of the first antenna component 110, at least part of the second antenna component 120, at least part of the third antenna component 130, and at least part of the fourth antenna component 140 are respectively arranged on different sides of the reference ground GND. In other words, at least part of the first antenna component 110, at least part of the second antenna component 120, at least part of the third antenna component 130, and at least part of the fourth antenna component 140 are respectively arranged on different sides of the electronic device 1000, so that the first antenna component 110, the second antenna component 120, the third antenna component 130, and the fourth antenna component 140 can respectively detect the sensing signal through different detection components 40 to identify from which side the subject to be detected approaches the electronic device 1000.

[0196] For example, at least a portion of the first antenna assembly 110 is disposed on the top frame 211, and at least a portion of the second antenna assembly 120 is disposed on the bottom frame 212. The third antenna assembly 130 and the fourth antenna assembly 140 are disposed on or near the first side frame 213 and the second side frame 214, respectively.

[0197] The third antenna assembly 130 and the fourth antenna assembly 140 can also detect the approach of the subject to be detected. The third antenna assembly 130 and the fourth antenna assembly 140 are both provided with a direct current isolation assembly 30 and a filter assembly 50, wherein the direct current isolation assembly 30 and the filter assembly 50 can refer to the above-mentioned embodiment and will not be described again here.

[0198] Optionally, the first antenna component 110, the second antenna component 120, the third antenna component 130 and the fourth antenna component 140 all reuse one detection component 40 to detect the sensing signal, which can detect that the subject to be tested is close to the electronic device 1000, while also saving the number of detection components 40 and reducing the space occupied in the electronic device 1000.

[0199] Specifically, the filter component 50 of the first antenna component 110 and the filter component 50 of the second antenna component 120, the filter component 50 of the third antenna component 130 and the filter component 50 of the fourth antenna component 140 are all electrically connected to different signal channels of the same detection component 40, so as to receive the induction signals generated by the first antenna component 110, the second antenna component 120, the third antenna component 130 and the fourth antenna component 140 when the subject to be detected approaches through the same detection component 40.

[0200] The controller is also electrically connected to the third antenna assembly 130 and the fourth antenna assembly 140. The controller is used to determine the target mode of the electronic device 1000 according to the magnitude of the induction signal generated by at least one of the first antenna assembly 110, the second antenna assembly 120, the third antenna assembly 130 and the fourth antenna assembly 140, and adjust the power of at least one of the first antenna assembly 110, the second antenna assembly 120, the third antenna assembly 130 and the fourth antenna assembly 140 according to the target mode. The target mode includes at least one of a single-hand holding mode, a two-hand holding mode, a carrying mode, and a head close mode. The details are as follows:

[0201] When the controller detects that the sensing signal received by the detection component 40 of the filtering component 50 electrically connected to the third antenna component 130 (hereinafter referred to as the sensing signal received by the third antenna component 130) is greater than or equal to the preset threshold, and the sensing signals received by the first antenna component 110, the second antenna component 120, and the fourth antenna component 140 are all less than the preset threshold, the controller can determine that a human body is approaching the first side frame 213 of the electronic device 1000, and there is no or basically no human body approaching the top frame 211, the bottom frame 212, and the second side frame 214, indicating that the electronic device 1000 is in a single-handed left-handed holding state.

[0202] When the controller detects that the sensing signal received by the fourth antenna component 140 is greater than or equal to the preset threshold, and the sensing signals received by the first antenna component 110, the second antenna component 120, and the third antenna component 130 are all less than the preset threshold, the controller can determine that a human body is approaching the second side frame 214 of the electronic device 1000, and there is no or basically no human body approaching the top frame 211, the bottom frame 212, and the first side frame 213, indicating that the electronic device 1000 is currently held in the right hand.

[0203] When the controller detects that the sensing signals received by the third antenna component 130 and the fourth antenna component 140 are both greater than or equal to the preset threshold, and the sensing signals received by the first antenna component 110 and the second antenna component 120 are both less than the preset threshold, the controller can determine that the electronic device 1000 is in a portrait mode held by both hands.

[0204] When the controller detects that the sensing signals received by the first antenna component 110 and the second antenna component 120 are both greater than or equal to the preset threshold, and the sensing signals received by the third antenna component 130 and the fourth antenna component 140 are both less than the preset threshold, the controller can determine that the electronic device 1000 is in a two-handed horizontal screen state. Further, when the controller determines that the electronic device 1000 is in a two-handed horizontal screen state, it can be determined that the electronic device 1000 has an increased demand for Internet access speed at this time, for example, the electronic device 1000 is running a game or video application at this time, and the power of the above-mentioned antenna component 100 can be increased at this time to improve the Internet access speed of the electronic device 1000, so that the user's Internet experience is very good.

[0205] When the controller detects that the sensing signals received by at least three of the first antenna assembly 110, the second antenna assembly 120, the third antenna assembly 130, and the fourth antenna assembly 140 are greater than or equal to the preset threshold, the controller determines that a human body is approaching the side frames of at least three sides of the electronic device 1000, and the controller can determine that the electronic device 1000 is in a portable state. Since the demand for Internet access speed in the portable state is relatively small, the controller can appropriately reduce the power of the antenna assembly 100 at this time.

[0206] In this embodiment, the electronic device 1000 further includes a functional device (not shown). The functional device includes but is not limited to at least one of a receiver and a display screen. The controller is electrically connected to the functional device. The controller is used to determine the working state of the electronic device 1000 according to the magnitude of the induction signal received by the first antenna component 110, the second antenna component 120, the third antenna component 130, and the fourth antenna component 140 and the working state of the functional device.

[0207] Optionally, when the controller detects that the induction signals received by at least one of the first antenna component 110, the second antenna component 120, the third antenna component 130, and the fourth antenna component 140 are all greater than or equal to a preset threshold, and the receiver is in working condition, it indicates that the electronic device 1000 is in a state close to the head of the subject to be tested, that is, the human head is close to the electronic device 1000 to make a call. At this time, the controller can control the power of the antenna component 100 to be reduced to reduce the specific absorption rate of the human head to electromagnetic waves.

[0208] Optionally, when the controller detects that the sensing signals received by at least three of the first antenna assembly 110, the second antenna assembly 120, the third antenna assembly 130, and the fourth antenna assembly 140 are all greater than or equal to the preset threshold value, and the display screen 300 is in a non-displaying state, it indicates that the electronic device 1000 may be in a carrying state, wherein the carrying state includes but is not limited to being accommodated in the clothes pocket of the subject to be tested; being accommodated in a school bag, waist bag, mobile phone bag, or other carry-on bag close to the subject to be tested; or the electronic device 1000 can be worn on the subject to be tested through a rope, a wristband, or the like. In this embodiment, it is further detected whether the receiver is in a working state. If the receiver is in a non-working state, it can be directly determined that the electronic device 1000 is in a state of being accommodated in the pocket of the subject to be tested. At this time, the controller can control the power of the antenna assembly 100 to be reduced to reduce the electromagnetic radiation of the electronic device 1000 to the human body and reduce the specific absorption rate of the human body to electromagnetic waves.

[0209] If the receiver is in working state, it means that the electronic device 1000 may be in the state of being placed in the pocket of the subject to be tested or in the state of making a call. At this time, the controller can control the power of the antenna assembly 100 to reduce so as to reduce the electromagnetic radiation of the electronic device 1000 to the human body and reduce the specific absorption rate of the human head to electromagnetic waves.

[0210] The above is the controller intelligently judging the scene where the electronic device 1000 is located based on the sensing signal received by at least one of the first antenna component 110, the second antenna component 120, the third antenna component 130, and the fourth antenna component 140, and in combination with the working status of the functional components. Of course, the posture and application of the electronic device 1000 at this time can also be more accurately judged in combination with the running status of the application, so as to intelligently judge the demand of the electronic device 1000 for Internet access speed. Furthermore, the controller adjusts the power of the first antenna component 110, the second antenna component 120, the third antenna component 130, and the fourth antenna component 140 to intelligently match the demand of the electronic device 1000 for Internet access speed, so that the electronic device 1000 has good communication quality in a variety of scenarios.

[0211] Optionally, when the first antenna component 110, the second antenna component 120, the third antenna component 130 and the fourth antenna component 140 can all support the same frequency band, after the controller determines that the electronic device 1000 is held in the left hand, the controller turns off the blocked third antenna component 130 and turns on at least one of the unblocked first antenna component 110, the second antenna component 120 and the fourth antenna component 140. After the controller determines that the electronic device 1000 is held in the right hand, the controller turns off the blocked fourth antenna component 140 and turns on at least one of the unblocked first antenna component 110, the second antenna component 120 and the third antenna component 130. After the controller determines that the electronic device 1000 is held in the vertical screen with both hands, the controller turns off the blocked third antenna component 130 and the fourth antenna component 140 and turns on at least one of the unblocked first antenna component 110 and the second antenna component 120. After the controller determines that the electronic device 1000 is held in the horizontal screen with both hands, the controller turns off the blocked first antenna component 110 and the second antenna component 120, and turns on at least one of the unblocked third antenna component 130 and the fourth antenna component 140. Through the above intelligent detection of the holding state of the electronic device 1000 and intelligent switching according to the holding state of the electronic device 1000, intelligent switching of the electronic device 1000 in various different blocking scenarios is achieved, ensuring that the electronic device 1000 can support the required frequency band in various different blocking scenarios, so as to ensure the communication quality of the electronic device 1000.

[0212] The first antenna component 110, the second antenna component 120, the third antenna component 130 and the fourth antenna component 140 can all support a certain frequency band, for example, 1.4 GHz to 2.7 GHz, but not limited thereto. Furthermore, the first antenna component 110, the second antenna component 120, the third antenna component 130 and the fourth antenna component 140 support the same frequency band. Among the four antenna components 100, each antenna component 100 is in duplex mode and can transmit or receive signals independently of each other, so as to realize the 4*4 MIMO working mode for the medium-high-ultra-high frequency band. Each antenna component 100 can support LTE-4G signals and NR-5G signals, that is, realize dual connection of LTE-4G and NR-5G signals. Each antenna component 100 can support multiple resonance modes, and the frequency bands supported by similar resonance modes can be synthesized into ultra-bandwidth through carrier aggregation to improve throughput, improve user experience, reduce adjustable components, and save costs. In other words, the four antenna assemblies 100 are distributed around the entire electronic device 1000 to achieve a multi-CA or ENDC combination of 4*4MIMO in the medium, high and ultra-high frequency bands. The four antenna assemblies 100 are distributed on the four side frames of the entire electronic device 1000, and can also detect the approach of the human body on the back (where the back cover is located) and the front (where the display screen is located) of the electronic device 1000, thus achieving 360-degree coverage without dead angles and precise detection. In addition, the human body approach detection function is integrated into the four antenna assemblies 100, and the four antenna assemblies 100 can be switched intelligently to enable the electronic device 1000 to intelligently adjust the communication quality in different holding scenarios.

[0213] Optionally, when the second antenna assembly 120, the third antenna assembly 130 and the fourth antenna assembly 140 cannot support the frequency band supported by the first antenna assembly 110, after the controller determines that the electronic device 1000 is held in the left hand, the controller controls the power of the blocked third antenna assembly 130 to increase to compensate for the loss when the third antenna assembly 130 is blocked. When the controller determines that the blocking object of the third antenna assembly 130 of the electronic device 1000 is removed, the controller controls the power of the blocked third antenna assembly 130 to be reduced to the initial state. Similarly, when the right hand is held in one hand, the two hands are held in the vertical screen, and the two hands are held in the horizontal screen, the controller can also increase the power of the blocked antenna assembly 100. Through the above intelligent detection of the holding state of the electronic device 1000 and the dynamic adjustment of the power of the antenna assembly 100 according to the holding state of the electronic device 1000, the communication quality of the electronic device 1000 is ensured.

[0214] In other embodiments, the controller can also determine the state of the electronic device 1000 through sensors such as gyroscope sensors in the electronic device 1000, and then adjust the power of each antenna component 100 according to the state of the electronic device 1000. For example, if the electronic device 1000 is judged to be in a picked-up state through sensors such as gyroscope sensors, the power of each antenna component 100 can be increased; if the electronic device 1000 is judged to be in a put-down or placed state through sensors such as gyroscope sensors, the power of each antenna component 100 can be reduced to save energy and realize intelligent adjustment of the antenna component 100.

[0215] The antenna assembly 100 provided in the present application excites a variety of resonant modes by designing the structure of the radiator 10 and the position of the grounding point A. These resonant modes can achieve ultra-wideband coverage, thereby achieving multi-band ENDC / CA performance and improving download bandwidth, thereby increasing throughput download speed and improving user experience. The various modes generated by the antenna assembly 100 of the present application can reinforce each other, so it can efficiently cover ultra-wide bandwidth, save costs, and help meet the indicators of major operators. The radiator 10 in the antenna assembly 100 also serves as an induction electrode for human proximity detection, so that the antenna assembly 100 supports ultra-wideband while also having the function of detecting human proximity. When the human head is close, the power of the antenna assembly 100 is reduced to reduce the specific absorption rate of the human head for the electromagnetic wave signal radiated by the antenna assembly 100. The antenna assembly 100 has high integration, multiple functions and occupies a small space; by setting multiple antenna components 100 in the electronic device 1000 and laying out the multiple antenna components 100, the multiple antenna components 100 can detect the approach of the human body at different positions, and the controller determines the target mode of the electronic device 1000 according to the detection results of the multiple antenna components 100, for example, left-hand holding, right-hand holding mode, two-handed horizontal screen holding mode, two-handed vertical screen holding mode, carrying mode, head proximity mode, etc., to achieve intelligent detection of the target mode of the electronic device 1000; the controller can also intelligently switch the power of the antenna component 100 according to the target mode of the electronic device 1000, so as to ensure that the electronic device 1000 can maintain a good antenna transmission rate under different shielding conditions and intelligently reduce the specific absorption rate of the electronic device 1000 for electromagnetic wave signals.

[0216] The above is part of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. An antenna assembly, characterized in that: include: A radiator, comprising a first sub-radiator and a second sub-radiator, wherein a coupling gap exists between the first sub-radiator and the second sub-radiator; the first sub-radiator comprises a first coupling end and a first free end, the first sub-radiator further comprises a feeding point and a first grounding point, the feeding point is located between the first free end and the first coupling end, and the distance between the first grounding point and the first coupling end is greater than the distance between the feeding point and the first coupling end; the second sub-radiator comprises a second coupling end, a second free end, and a second grounding point located between the second coupling end and the second free end, the coupling gap exists between the second coupling end and the first coupling end, and the first grounding point and the second grounding point are both used to be electrically connected to a reference ground; and A signal source, the signal source is electrically connected to the feeding point, the radiator supports at least three resonance modes under the excitation of the signal source, the radiator supports a first resonance mode under the excitation of the signal source, a first resonance current density of the first resonance mode is distributed at least between the first grounding point and the first coupling end and between the second coupling end and the second grounding point, wherein the flow direction of the first resonance current between the first grounding point and the first coupling end is the same as the flow direction between the second coupling end and the second grounding point.

2. The antenna assembly according to claim 1, wherein: The first grounding point is located at the first free end.

3. The antenna assembly according to claim 2, wherein: The radiator supports a second resonance mode and a third resonance mode under the excitation of the signal source.

4. The antenna assembly according to claim 3, characterized in that The second resonant current density of the second resonant mode is distributed between the first grounding point and the first coupling end, and between the second coupling end and the second free end, wherein the flow direction of the second resonant current between the first grounding point and the first coupling end is opposite to that between the second coupling end and the second grounding point, and the flow direction of the second resonant current between the second grounding point and the second free end is opposite to that between the second coupling end and the second grounding point; The third resonant current density of the third resonant mode is distributed between the first grounding point and the first coupling end, and between the second coupling end and the second free end, wherein the flow direction of the third resonant current between the first grounding point and the first coupling end is opposite to that between the second coupling end and the second grounding point, and the flow direction of the third resonant current between the second grounding point and the second free end is the same as that between the second coupling end and the second grounding point.

5. The antenna assembly according to claim 3, characterized in that: The first resonance mode supports the first sub-radiator to operate in a (1 / 8 to 1 / 4) wavelength mode; the second resonance mode supports the second sub-radiator between the second coupling end and the second grounding point to operate in a (1 / 8 to 1 / 4) wavelength mode; the third resonance mode supports the second sub-radiator to operate in a 1 / 2 wavelength mode.

6. The antenna assembly according to claim 5, characterized in that The frequency band supported by the first resonance mode is the first frequency band; the frequency band supported by the second resonance mode is the second frequency band, and the frequency band supported by the third resonance mode is the third frequency band, wherein the first frequency band, the second frequency band and the third frequency band are continuous in sequence, two of them are continuous, or none of them are continuous.

7. The antenna assembly according to claim 1, wherein: The first grounding point is located between the first free end and the feeding point.

8. The antenna assembly according to claim 7, wherein: The radiator supports a fourth resonance mode, a fifth resonance mode, a sixth resonance mode and a seventh resonance mode under the excitation of the signal source.

9. The antenna assembly according to claim 8, wherein: A fourth resonant current density of the fourth resonant mode is distributed at least between the first free end and the first coupling end, wherein a flow direction of the fourth resonant current between the first free end and the first grounding point is opposite to a flow direction between the first grounding point and the first coupling end; The fifth resonant current density of the fifth resonant mode is at least distributed between the first free end and the first coupling end and between the second coupling end and the second grounding point, wherein the fifth resonant current has the same flow direction between the first free end and the first grounding point, between the first grounding point and the first coupling end, and between the second coupling end and the second grounding point; The sixth resonant current density of the sixth resonant mode is distributed at least between the first grounding point and the first coupling end, and between the second coupling end and the second free end, wherein the flow direction of the sixth resonant current between the first grounding point and the first coupling end is opposite to that between the second coupling end and the second grounding point, and the flow direction of the sixth resonant current between the second grounding point and the second free end is opposite to that between the second coupling end and the second grounding point; The seventh resonant current density of the seventh resonant mode is distributed at least between the first grounding point and the first coupling end, and between the second coupling end and the second free end, wherein the flow direction of the seventh resonant current between the first grounding point and the first coupling end is opposite to that between the second coupling end and the second grounding point, and the flow direction of the sixth resonant current between the second grounding point and the second free end is the same as that between the second coupling end and the second grounding point.

10. The antenna assembly according to claim 8, wherein: The fourth resonance mode supports the first sub-radiator between the first ground point and the first coupling end to operate in a (1 / 8 to 1 / 4) wavelength mode; the fifth resonance mode supports the first sub-radiator to operate in a 1 / 2 wavelength mode; the sixth resonance mode supports the second sub-radiator between the second coupling end and the second ground point to operate in a (1 / 8 to 1 / 4) wavelength mode; the seventh resonance mode supports the second sub-radiator to operate in a 1 / 2 wavelength mode.

11. The antenna assembly according to claim 10, wherein: The frequency band supported by the fourth resonance mode is the fourth frequency band, the frequency band supported by the fifth resonance mode is the fifth frequency band, the frequency band supported by the sixth resonance mode is the sixth frequency band, and the frequency band supported by the seventh resonance mode is the seventh frequency band, wherein four of the fourth frequency band, the fifth frequency band, the sixth frequency band and the seventh frequency band are sequentially continuous, three are continuous, two are continuous, or none of them are continuous.

12. The antenna assembly according to claim 7, wherein: The length of the radiator between the first ground point and the first free end is (1 / 4) to (3 / 4) times the length of the first sub-radiator.

13. The antenna assembly according to claim 8, wherein: The antenna assembly further includes a first matching circuit, the first matching circuit being electrically connected between the feed point and the signal source; the first matching circuit includes a first subcircuit, one end of the first subcircuit being electrically connected to the feed point, the other end of the first subcircuit being electrically connected to the reference ground, and the first subcircuit being capacitive when operating in a frequency band supported by the fourth resonance mode, a frequency band supported by the fifth resonance mode, a frequency band supported by the sixth resonance mode, and a frequency band supported by the seventh resonance mode; And / or, the antenna assembly further includes a second matching circuit, the first sub-radiator further includes a first frequency tuning point located between the first free end and the first grounding point, one end of the second matching circuit is connected to the first frequency tuning point, the other end of the second matching circuit is electrically connected to the reference ground, and the second matching circuit is capacitive when operating in the frequency band supported by the fourth resonance mode and the frequency band supported by the fifth resonance mode; And / or, the antenna assembly further includes a third matching circuit, the second sub-radiator further includes a second frequency modulation point located between the second coupling end and the second grounding point, one end of the third matching circuit is connected to the second frequency modulation point, the other end of the third matching circuit is electrically connected to the reference ground, and the third matching circuit is capacitive when operating in the frequency band supported by the fifth resonance mode, the frequency band supported by the sixth resonance mode, and the frequency band supported by the seventh resonance mode; And / or, the antenna assembly also includes a fourth matching circuit, the second sub-radiator also has a third frequency tuning point located between the second grounding point and the second free end, one end of the fourth matching circuit is connected to the third frequency tuning point, and the other end of the fourth matching circuit is electrically connected to the reference ground, and the fourth matching circuit is capacitive when operating in the frequency band supported by the sixth resonant mode and the frequency band supported by the seventh resonant mode.

14. The antenna assembly according to any one of claims 1 to 13, characterized in that: The length of the radiator between the second ground point and the second free end is (1 / 4) to (3 / 4) times the length of the second sub-radiator.

15. The antenna assembly according to any one of claims 1 to 13, characterized in that: The antenna assembly also includes a direct current isolation assembly, a filtering assembly and a detection assembly, wherein the direct current isolation assembly is electrically connected between the first sub-radiator and the signal source, and between the first sub-radiator and the reference ground, and one end of the filtering assembly is electrically connected to a side of the direct current isolation assembly close to the first sub-radiator or is electrically connected to the first sub-radiator; and / or, the direct current isolation assembly is electrically connected between the second sub-radiator and the reference ground, and one end of the filtering assembly is electrically connected to a side of the direct current isolation assembly close to the second sub-radiator or is electrically connected to the second sub-radiator; the direct current isolation assembly is used to isolate the reference ground and the direct current generated by the signal source, and the filtering assembly is used to block the radio frequency signals received and sent by the radiator and the induction signals generated by the radiator when the subject to be measured approaches; the detection assembly is electrically connected to the other end of the filtering assembly, and the detection assembly is used to detect the size of the induction signal.

16. An electronic device, characterized in that: The electronic device includes a shell, a reference ground and at least one antenna assembly as described in any one of claims 1 to 15, wherein the reference ground is arranged in the shell, and the radiator of the antenna assembly is integrated in the shell, or is arranged on the surface of the shell, or is arranged in the space surrounded by the shell; the first grounding point and the second grounding point are both electrically connected to the reference ground.

17. The electronic device according to claim 16, characterized in that: The reference ground includes a plurality of sides connected in sequence, the connection between two adjacent sides being a corner, the radiator of at least one antenna component being arranged relative to the two intersecting sides and the corner; and / or, all of the radiators of at least one antenna component are arranged relative to one side.

18. The electronic device according to claim 16, characterized in that: At least one of the antenna components includes a first antenna component and a second antenna component, the first antenna component and the second antenna component are arranged diagonally, and the induction signals generated by the first antenna component and the second antenna component when the subject to be detected approaches are both detected by the detection component; The electronic device also includes a controller, which is electrically connected to the first antenna component, the second antenna component and the detection component, and is used to adjust the power of the first antenna component and the second antenna component according to the size of the induction signal generated by the first antenna component and the second antenna component.

19. The electronic device according to claim 18, characterized in that: At least one of the antenna assemblies further comprises a third antenna assembly and a fourth antenna assembly, and at least part of the first antenna assembly, at least part of the second antenna assembly, at least part of the third antenna assembly, and at least part of the fourth antenna assembly are respectively arranged on different sides of the reference ground; the induction signals generated by the third antenna assembly and the fourth antenna assembly when the subject to be measured approaches are detected by the detection assembly; The controller is also electrically connected to the third antenna assembly and the fourth antenna assembly. The controller is used to determine the target mode of the electronic device according to the magnitude of the induction signal of at least one of the first antenna assembly, the second antenna assembly, the third antenna assembly and the fourth antenna assembly, and adjust the power of at least one of the first antenna assembly, the second antenna assembly, the third antenna assembly and the fourth antenna assembly according to the target mode. The target mode includes at least one of a one-hand holding mode, a two-hand holding mode, a carrying mode and a head close mode.

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