Electronic device

Abstract

The invention discloses an electronic device, the electronic device comprises an antenna assembly and a conductive decorating part, the antenna assembly comprises a radiator, a feed source and a first matching circuit; the feed source is used for exciting the radiator to generate a first resonant mode, and the first resonant mode is used for supporting a target frequency band; the decorating part is provided with a connecting point, the decorating part and the radiator are arranged at an interval, the decorating part is used for being coupled with the radiator, a second resonance mode is generated when the decorating part is coupled with the radiator, and the second resonance mode is used for supporting the target frequency band; one end of the first matching circuit is electrically connected to the connection point, the other end of the first matching circuit is grounded, and the first matching circuit is used for adjusting a directional diagram of the target frequency band. According to the electronic equipment provided by the embodiment of the invention, the coverage of a larger frequency band of the target frequency band can be realized, and the electronic equipment has better performance when performing communication by using the target frequency band.

Description

Technical Field

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

[0002] With the development of technologies, the popularity of electronic devices with communication functions such as mobile phones is getting higher and higher, and the functions are getting more and more powerful. An electronic device usually includes an antenna assembly to implement the communication function of the electronic device. However, the coverage range of the antenna assembly in the related art electronic device is relatively small, and thus the communication function of the antenna assembly is relatively weak. Summary of the Invention

[0003] In a first aspect, an embodiment of this application provides an electronic device, which includes an antenna assembly and a conductive decorative member. The antenna assembly includes:

[0004] A radiator;

[0005] A feeder, which is used to excite the radiator to generate a first resonance mode, and the first resonance mode is used to support a target frequency band;

[0006] The decorative member has a connection point, the decorative member is spaced apart from the radiator, and is used to couple with the radiator. When the decorative member is coupled with the radiator, a second resonance mode is generated, and the second resonance mode is used to support the target frequency band;

[0007] A first matching circuit, one end of the first matching circuit is electrically connected to the connection point, the other end of the first matching circuit is grounded, and the first matching circuit is used to adjust the radiation pattern of the target frequency band.

[0008] In summary, for the electronic device provided by the embodiment of this application, the feeder excites the radiator to generate a first resonance mode to support the target frequency band, and when the conductive decorative member is coupled with the radiator, a second resonance mode is generated to support the target frequency band. Therefore, the performance of the target frequency band can be improved. When the conductive decorative member is coupled with the radiator to generate a second resonance mode to support the target frequency band, the decorative member is equivalent to a parasitic radiator of the radiator. In other words, the decorative member can achieve function multiplexing, reduce the components of the electronic device, and is beneficial to the light weight of the electronic device. Further, the first matching circuit adjusts the radiation pattern of the target frequency band, so that when the electronic device supports the target frequency band, a larger coverage range of the target frequency band can be achieved, and further, when the electronic device communicates using the target frequency band, it has better performance. Description of the Drawings

[0009] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0010] Figure 1 Schematic diagram of an electronic device provided by an embodiment of the present application;

[0011] Figure 2 For an embodiment Figure 1 Schematic diagram of a partial structure of the electronic device shown in;

[0012] Figure 3 For another embodiment Figure 1 Schematic diagram of a partial structure of the electronic device shown in;

[0013] Figure 4 Schematic diagram of the first matching circuit in the first state in an embodiment;

[0014] Figure 5 Schematic diagram of the first matching circuit in the second state in an embodiment;

[0015] Figures 6 to 15 Schematic diagrams of the circuits included in the first matching sub - circuit (second matching sub - circuit) provided by each embodiment respectively;

[0016] Figure 16 For Figure 2 Schematic diagram of the gap between the decorative member and the radiator shown in;

[0017] Figure 17 Partial structure schematic diagram of an electronic device provided by another embodiment of the present application;

[0018] Figure 18 Circuit block diagram of an electronic device provided by an embodiment of the present application;

[0019] Figure 19 Simulation diagram of the S - parameter curves when the first matching circuit in the electronic device of the present application is in the first state and the second state;

[0020] Figure 20 Schematic diagram of the current distribution supporting the target frequency band when the first matching circuit in the electronic device of the present application is in the first state;

[0021] Figure 21 Schematic diagram of the current distribution supporting the target frequency band when the first matching circuit in the electronic device of the present application is in the second state;

[0022] Figure 22 System radiation efficiency and system total efficiency curve simulation diagrams when the first matching circuit in the electronic device is in the first state and the second state and supports the target frequency band;

[0023] Figure 23 Pattern when the first matching circuit in the electronic device is in the first state and supports the target frequency band;

[0024] Figure 24 Pattern when the first matching circuit in the electronic device is in the second state and supports the target frequency band;

[0025] Figure 25 Pattern when the first matching circuit in the electronic device is in the first state, supports the target frequency band and is held by the user's right hand;

[0026] Figure 26 Pattern when the first matching circuit in the electronic device is in the second state, supports the target frequency band and is held by the user's right hand;

[0027] Figure 27 Schematic diagram of another perspective of the electronic device provided by the embodiment of the present application.

[0028] Description of main component numbers

[0029] Electronic device 1, first side 1a, second side 1b;

[0030] Antenna assembly 10, radiator 110, feed source S, first matching circuit M1, second matching circuit M2;

[0031] Free end 111, ground end 112, feeding point P0, switching switch 121, common end 1211, connection end 1212, first matching sub-circuit 122, second matching sub-circuit 221;

[0032] Capacitor C0, first capacitor C1, second capacitor C2, inductor L0, first inductor L1, second inductor L2;

[0033] Parallel unit 1221, first parallel unit 1221a, second parallel unit 1221b, series unit 1222, first series unit 1222a, second series unit 1222b;

[0034] Decorative member 20, connection point P1, light-transmitting part 20a, first decorative part 210, second decorative part 220;

[0035] Middle frame 30, ground electrode 40, display screen 50, controller 60, rear cover 70. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying 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, when referring to "embodiment" or "embodiment mode" in the present application, it means that the specific features, structures or characteristics described in conjunction with the embodiment or embodiment mode can be included in at least one embodiment of the present application. The appearance of this phrase at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments. It should be noted that for ease of description, in the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, the detailed description of the same components is omitted in different embodiments.

[0037] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned accompanying drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0038] An embodiment of the present application provides an electronic device 1, and the electronic device 1 can be a mobile phone, a tablet computer, a desktop computer, a laptop computer, an e-reader, a handheld computer, an electronic display screen, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, as well as devices with an antenna assembly 10 such as a cellular phone, a personal digital assistant (PDA), an augmented reality (AR) / virtual reality (VR) device, a media player, a smart wearable device, etc. In this embodiment, the electronic device 1 is taken as a mobile phone as an example for illustration and description. It can be understood that it should not be construed as a limitation on the embodiments of the present application.

[0039] Please refer to Figure 1 、 Figure 2 and Figure 3 , Figure 1 which is a schematic diagram of an electronic device provided by an embodiment of the present application; Figure 2 is a schematic diagram of a partial structure of the electronic device shown in Figure 1 in an embodiment;Figure 3 For another embodiment Figure 1 is a schematic diagram of a partial structure of an electronic device shown in. The electronic device 1 includes an antenna assembly 10 and a conductive decorative member 20. The antenna assembly 10 includes a radiator 110, a feed source S, and a first matching circuit M1. The feed source S is used to excite the radiator 110 to generate a first resonance mode, and the first resonance mode is used to support a target frequency band. The decorative member 20 has a connection point P1. The decorative member 20 is disposed at an interval from the radiator 110 and is used to couple with the radiator 110. When the decorative member 20 is coupled with the radiator 110, a second resonance mode is generated, and the second resonance mode is used to support the target frequency band. One end of the first matching circuit M1 is electrically connected to the connection point P1, and the other end of the first matching circuit M1 is grounded. The first matching circuit M1 is used to adjust the radiation pattern of the target frequency band.

[0040] It should be noted that Figure 2 The partial structure of the electronic device shown in is Figure 1 a rear view of a partial electronic device in, and the feed source S of the antenna assembly 10 is located on a circuit board (not shown). The circuit board is stacked and spaced apart from the decorative member 20. Accordingly, the first matching circuit M1 is also located on the circuit board. In Figure 2 , the ground electrode 40 of the electronic device 1 is shown, and the decorative member 20 is stacked and spaced apart from the ground electrode 40. In Figure 2 , taking the radiator 110 as a flexible circuit board radiator as an example for illustration.

[0041] Figure 3 The partial structure of the electronic device shown in is Figure 1 a rear view of a partial electronic device in, and the feed source S of the antenna assembly 10 is located on a circuit board (not shown). The circuit board is stacked and spaced apart from the decorative member 20. Accordingly, the first matching circuit M1 is also located on the circuit board. In Figure 3 , the ground electrode 40 of the electronic device 1 is shown, and the decorative member 20 is stacked and spaced apart from the ground electrode 40. In Figure 3 , taking the radiator as a middle frame radiator formed on the middle frame 30 as an example for illustration. It can be understood that it should not be construed as a limitation to the embodiments of the present application.

[0042] The radiator 110 can be a Laser Direct Structuring (LDS) radiator 110, or a Flexible Printed Circuit (FPC) radiator 110, or a Print Direct Structuring (PDS) radiator 110, or a metal stub radiator 110. When the antenna assembly 10 is applied to the electronic device 1, the radiator 110 can be a Mechanical Design Antenna (MDA) radiator 110 designed by using the metal insert of the electronic device 1 itself. For example, the radiator 110 can be an antenna radiator 110 designed by using the middle frame 30 formed by the plastic and metal of the electronic device 1 (please refer to Figure 27 ). In addition, the radiator 110 can also be a metal frame radiator 110 designed by the metal middle frame 30. When the radiator 110 receives a radio frequency signal in the first frequency band, the radiator 110 emits an electromagnetic wave signal in the first frequency band according to the radio frequency signal in the first frequency band.

[0043] In this embodiment, the example of the feed source S being electrically connected to the radiator 110 is used for illustration. It can be understood that it should not be construed as a limitation to the embodiments of the present application. Correspondingly, the structure of the radiator 110 in the embodiments of the present application should not be construed as a limitation to the embodiments of the present application. The feed source S is used to excite the radiator 110 to generate a first resonance mode to support the target frequency band. The target frequency band can be, but is not limited to, the intermediate frequency band, or the high frequency band, or the ultra-high frequency band, or the WiFi frequency band, etc. The target frequency band can include, but is not limited to, the N79 frequency band, or the N78 frequency band, or the WiFi 5G frequency band.

[0044] The electrically conductive decorative member 20 can be, but is not limited to, including a metal decorative member. In this embodiment, the electronic device 1 includes an electrically conductive decorative member 20, and it does not exclude that the electronic device 1 also includes a non-conductive decorative part, and the non-conductive decorative part can be, but is not limited to, materials such as glass, or ceramic, or plastic, etc.

[0045] It can be understood that the introduction of the electronic device 1 provided by the embodiments of the present application is only an introduction to an application environment of the antenna assembly 10 and the decorative member 20 of the electronic device 1. It should not be construed as a limitation to the electronic device 1 provided by the embodiments of the present application. Next, the electronic device 1 provided by the embodiments of the present application will be introduced in detail.

[0046] One end of the first matching circuit M1 can be electrically connected to the connection point P1 in, but not limited to, a manner of being electrically connected to the decorative member 20 through a conductive member. The conductive member can be, but not limited to, a conductive elastic sheet, or conductive adhesive, or conductive wire, etc.

[0047] The other end of the first matching circuit M1 can be grounded in, but not limited to, a manner of being electrically connected to the ground electrode of the electronic device 1 through a grounding member. The grounding member can be, but not limited to, a conductive elastic sheet, or conductive adhesive, or conductive wire, etc.

[0048] The ground electrode of the electronic device 1 can be, but not limited to, the ground electrode formed by the middle frame 30 of the electronic device 1, or the ground electrode in the circuit board of the electronic device 1, or the ground electrode in the shielding member of the display screen 50 of the electronic device 1, or when the rear cover 70 is a conductive rear cover 70, the ground electrode includes the ground electrode formed by the rear cover 70 of the electronic device 1. This application does not limit the ground electrode of the electronic device 1.

[0049] The outer contour of the decorative member 20 can be, but not limited to, circular, or square, or irregular shape, etc. In one embodiment, the decorative member 20 may include one or more light-transmitting portions 20a. The light-transmitting portion 20a is used for a functional device (such as a rear camera, etc.) of the electronic device 1 to work through the light-transmitting portion 20a. For example, when the decorative member 20 is the decorative member 20 of the rear camera of the electronic device 1, the rear camera can take pictures or shoot external target objects through the light-transmitting portion 20a. The light-transmitting portion 20a can be a light-transmitting through hole, or a light-passing solid portion, and this application does not limit this.

[0050] The position of the connection point P1 of the decorative member 20 can be, but not limited to, located at a part of the decorative member 20 that is away from the radiator 110, that is, the right side shown in the figure. In the illustrated perspective, the connection point P1 can also be located on the left side, or the upper side, or the lower side of the decorative member 20. The position of the connection point P1 shown in the schematic diagram of the embodiment of this application should not be construed as a limitation on the position of the connection point P1 provided by the embodiment of this application.

[0051] The decorative member 20 is disposed at an interval from the radiator 110 and is used to couple with the radiator 110. When the decorative member 20 is coupled with the radiator 110, the decorative member 20 couples the energy of the radiator 110 to generate a second resonance mode. The second resonance mode is used to support the target frequency band. It can be seen that for the electronic device 1 provided by the embodiment of the present application, the radiator 110 is used to generate a first resonance mode to support the target frequency band, and the decorative member 20 can be used to couple with the radiator 110 to generate a second resonance mode to support the target frequency band. Therefore, the electronic device 1 can have better performance in the target frequency band.

[0052] Further, the decorative member 20 has a connection point P1. One end of the first matching circuit M1 is electrically connected to the connection point P1, and the other end of the first matching circuit M1 is grounded. The first matching circuit M1 is used to adjust the radiation pattern of the target frequency band. It can be seen that when the electronic device 1 provided by the embodiment of the present application supports the target frequency band, by using the first matching circuit M1 to adjust the radiation pattern of the target frequency band, a larger range of coverage of the target frequency band can be achieved, so that the electronic device 1 has better performance when communicating using the target frequency band.

[0053] In summary, for the electronic device 1 provided by the embodiment of the present application, the feed source S excites the radiator 110 to generate a first resonance mode to support the target frequency band, and when the conductive decorative member 20 is coupled with the radiator 110, a second resonance mode is generated to support the target frequency band. Therefore, the performance of the target frequency band can be improved. When the conductive decorative member 20 is coupled with the radiator 110 to generate a second resonance mode to support the target frequency band, the decorative member 20 is equivalent to a parasitic radiator 110 of the radiator 110. In other words, the decorative member 20 can achieve function multiplexing, reduce the components of the electronic device 1, and is beneficial to the light weight of the electronic device 1. Further, the first matching circuit M1 adjusts the radiation pattern of the target frequency band, so that when the electronic device 1 supports the target frequency band, a larger range of coverage of the target frequency band can be achieved, and further, the electronic device 1 has better performance when communicating using the target frequency band.

[0054] Please refer to Figure 4 and Figure 5 , Figure 4 which is a schematic diagram of the first matching circuit in the first state in an embodiment; Figure 5Schematic diagram of the first matching circuit in a second state in an embodiment. The first matching circuit M1 includes a switching switch 121 and at least one first matching sub-circuit 122. The first matching circuit M1 has a first state in which the switching switch 121 is directly electrically connected to the ground electrode. When the first matching circuit M1 is in the first state, the antenna assembly 10 has a first radiation pattern in the target frequency band. The first matching circuit M1 further has a second state in which the switching switch 121 electrically connects the first matching sub-circuit 122 to the ground electrode. When the first matching circuit M1 is in the second state, the antenna assembly 10 has a second radiation pattern in the target frequency band, where the second radiation pattern is different from the first radiation pattern.

[0055] In this embodiment, an example is given in which the first matching circuit M1 includes three first matching sub-circuits 122. It can be understood that this should not be construed as a limitation on the embodiments of the present application.

[0056] When the first matching circuit M1 includes multiple first matching sub-circuits 122, when the first switching switch 121 is electrically connected to different first matching sub-circuits 122, the second radiation patterns corresponding to different second matching sub-circuits 221 are different.

[0057] In this embodiment, the switching switch 121 can be, but is not limited to, a single-pole N-throw switch (where N is a positive integer greater than or equal to 2), or the switching switch 121 includes multiple (N) single-pole single-throw switches. Correspondingly, the number of the first matching sub-circuits 122 is N - 1. When the switching switch 121 includes a single-pole N-throw switch, the switching switch 121 includes a common terminal 1211 and N connection terminals 1212. The common terminal 1211 is electrically connected to the connection point P1, one of the N connection terminals 1212 is electrically connected to the ground electrode, and the remaining N - 1 connection terminals 1212 of the N connection terminals 1212 are respectively electrically connected to N - 1 first sub-matching circuits. Specifically, the connection terminal 1212 is electrically connected to one end of the first matching sub-circuit 122, and different connection terminals 1212 are electrically connected to different first matching sub-circuits 122, and one end of the first matching sub-circuit 122 is grounded. When the switching switch 121 includes N single-pole single-throw switches, one end of one of the N single-pole single-throw switches is electrically connected to the connection point P1, and the other end is grounded. The other ends of the remaining N - 1 single-pole single-throw switches are electrically connected to the connection point P1, and the other ends are electrically connected to one end of the first matching sub-circuit 122, and the other end of the first matching sub-circuit 122 is grounded.

[0058] By controlling the state of the switching switch 121, the decorative member 20 can be electrically connected to the ground electrode, or the decorative member 20 can be electrically connected to the first sub-matching circuit to the ground. For the convenience of description, the state in which the switching switch 121 in the first matching circuit M1 is directly electrically connected to the ground electrode is named the first state; the state in which the switching switch 121 in the first matching circuit M1 is electrically connected to the first matching sub-circuit 122 to the ground electrode is named the second state. It should be noted that the switching switch 121 in the first matching circuit M1 being directly electrically connected to the ground electrode means that there is no first matching sub-circuit 122 or other matching sub-circuits between the switching switch 121 and the ground electrode. The switching switch 121 being directly electrically connected to the ground electrode may include one end of the switching switch 121 being electrically connected to the ground electrode through a conductive member (such as a conductive elastic sheet, or a conductive wire, or a conductive adhesive, etc.).

[0059] When the first matching circuit M1 is in the first state, the decorative member 20 is electrically connected to the ground electrode through the switching switch 121, which is equivalent to the decorative member 20 being short-circuited to the ground electrode. When the first matching circuit M1 is in the first state, the decorative member 20 has no effect on the radiation of the radiator 110.

[0060] When the first matching circuit M1 is in the second state, the switching switch 121 is electrically connected to the first matching sub-circuit 122 to the ground electrode. The resonant current of the radiator 110 is coupled to the decorative member 20 through magnetic field, and in addition, the current on the ground electrode (also called the floor) of the electronic device 1 is also coupled to the decorative member 20 through magnetic field. Thus, the decorative member 20 supports the second resonant mode. By adjusting the switching switch 121 to be electrically connected to different first matching sub-circuits 122, the resonant frequency point of the second resonant mode and the frequency band supported by the second resonant mode can be adjusted.

[0061] When the first matching circuit M1 is in the first state, the antenna assembly 10 has a first radiation pattern in the target frequency band; when the first matching circuit M1 is in the second state, the antenna assembly 10 has a second radiation pattern in the target frequency band, where the second radiation pattern is different from the first radiation pattern. Thus, it can be seen that by controlling the state of the switching switch 121, the radiation pattern of the antenna assembly 10 when supporting the target frequency band can be made different, and thus, the coverage range of the antenna assembly 10 when supporting the target frequency band can be improved, and it has better performance in the target frequency band.

[0062] Please refer to Figures 6 to 15 , Figures 6 to 15 which are the circuit schematic diagrams included in the first matching sub-circuit (second matching sub-circuit) provided for each embodiment. The first matching sub-circuit 122 includes Figures 6 to 15at least one of the circuits therein.

[0063] Please refer to Figure 6 , the first matching sub - circuit 122 includes a capacitor C0. The capacitor C0 can be, but is not limited to, a variable capacitor.

[0064] Please refer to Figure 7 , the first matching sub - circuit 122 includes an inductor L0. The inductor L0 can be, but is not limited to, a variable inductor.

[0065] Please refer to Figure 8 , the first matching sub - circuit 122 includes a series unit 1222 of a capacitor C0 and an inductor L0.

[0066] Please refer to Figure 9 , the first matching sub - circuit 122 includes a parallel unit 1221 of a capacitor C0 and an inductor L0.

[0067] Please refer to Figure 10 , the first matching sub - circuit 122 includes a first capacitor C1, an inductor L0, and a second capacitor C2. The first capacitor C1 and the inductor L0 are connected in parallel to form a parallel unit 1221, and the second capacitor C2 is connected in series with the parallel unit 1221.

[0068] Please refer to Figure 11 , the first matching sub - circuit 122 includes a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 and the first inductor L1 are connected in parallel to form a parallel unit 1221, and the second inductor L2 is connected in series with the parallel unit 1221.

[0069] Please refer to Figure 12 , the first matching sub - circuit 122 includes an inductor L0, a first capacitor C1, and a second capacitor C2. The inductor L0 and the first capacitor C1 are connected in series to form a series unit 1222, and the second capacitor C2 is connected in parallel with the series unit 1222.

[0070] Please refer to Figure 13 , the first matching sub - circuit 122 includes a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 and the first inductor L1 are connected in series to form a series unit 1222, and the second inductor L2 is connected in parallel with the series unit 1222.

[0071] Please refer to Figure 14, the first matching sub-circuit 122 includes a first capacitor C1, a first inductor L1, a second capacitor C2, and a second inductor L2. The first capacitor C1 and the first inductor L1 are connected in parallel to form a first parallel unit 1221a, the second capacitor C2 and the second inductor L2 are connected in parallel to form a second parallel unit 1221b, and the first parallel unit 1221a and the second parallel unit 1221b are connected in series.

[0072] Please refer to Figure 15 , the first matching sub-circuit 122 includes a first capacitor C1, a first inductor L1, a second capacitor C2, and a second inductor L2. The first capacitor C1 and the first inductor L1 are connected in series to form a first series unit 1222a, the second capacitor C2 and the second inductor L2 are connected in series to form a second series unit 1222b, and the first series unit 1222a and the second series unit 1222b are connected in parallel.

[0073] The first matching sub-circuit 122 is used to adjust the resonance frequency point of the second resonance mode. Thus, according to the specific frequency band of the target frequency band, one of the multiple first matching sub-circuits 122 can be selected by the switching switch 121, so as to enhance the performance of the target frequency band supported by the radiator 110.

[0074] In one embodiment, the second resonance mode includes the quarter-wavelength mode of the decorative member 20.

[0075] The "wavelength" in "the second resonance mode includes the quarter-wavelength mode of the decorative member 20" refers to the wavelength corresponding to the center frequency point (also known as the center frequency) of the resonance frequency band corresponding to the second resonance mode supported by the decorative member 20. The quarter-wavelength mode is also called the fundamental mode, and the fundamental mode has a higher radiation efficiency. In this embodiment, the second resonance mode includes the quarter-wavelength mode of the decorative member 20, that is, the second resonance mode includes the fundamental mode of the decorative member 20. Since the second resonance mode supports the target frequency band, in other words, the fundamental mode of the decorative member 20 supports the target frequency band. Thus, the second resonance mode can further improve the radiation efficiency of the target frequency band.

[0076] Please refer to Figure 16 , Figure 16 is Figure 2 a schematic diagram of the interval between the decorative member and the radiator shown in. The interval d1 between the decorative member 20 and the radiator 110 satisfies: 2mm ≤ d1 ≤ 8mm.

[0077] The distance d1 between the decorative member 20 and the radiator 110 may be, but is not limited to, 2 mm, or 3 mm, or 4 mm, or 5 mm, or 6 mm, or 7 mm, or 8 mm.

[0078] When the distance between the decorative member 20 and the radiator 110 is too small, there is a risk that the decorative member 20 contacts and is electrically connected to the radiator 110. When the decorative member 20 contacts the radiator 110, there is a risk that the frequency band supported by the antenna assembly 10 deviates from the target frequency band. When the distance between the decorative member 20 and the radiator 110 is too far, the energy coupled by the decorative member 20 to the radiator 110 is weak, and even the decorative member 20 cannot be coupled to the radiator 110, resulting in a weak second resonance mode generated by the decorative member 20, or even the second resonance mode cannot be excited.

[0079] In the embodiment of the present application, the distance d1 between the decorative member 20 and the radiator 110 satisfies: 2 mm ≤ d1 ≤ 8 mm. On the one hand, the risk of contact between the decorative member 20 and the radiator 110 can be reduced. On the other hand, the decorative member 20 can better couple the energy of the radiator 110, so that the decorative member 20 couples the energy of the radiator 110 and generates a second resonance mode better, thereby improving the performance of the antenna assembly 10 in the target frequency band.

[0080] Please continue to refer to Figure 16 , the maximum distance d2 between two points of the decorative member 20 satisfies: 2λ / 3 ≤ d2 ≤ λ, where λ is the wavelength corresponding to the center frequency point of the target frequency band.

[0081] For example, the d2 may be, but is not limited to, 2λ / 3, or 0.7λ, or 0.8λ, or 0.9λ, or λ.

[0082] Taking the center frequency point of the target frequency band as 5 GHz as an example, and taking the outer contour of the decorative member 20 as a circle for illustration. When the center frequency point of the target frequency band is 5 GHz, then λ = c / f = 3×10^8 m / s ÷ 5 GHz = 0.06 m = 60 mm. Therefore, the d2 of the decorative member 20 is 40 mm to 60 mm. Since the decorative member 20 is circular, the d2 of the decorative member 20 is the diameter of the decorative member 20. In other words, when the center frequency point of the target frequency band is 5 GHz, the diameter range of the decorative member 20 is 40 mm to 60 mm.

[0083] In this embodiment, the d2 satisfies: 2λ / 3 ≤ d2 ≤ λ, which can enable the decorative member 20 to better match the electrical length required by the supported target frequency band, and thus enable the decorative member 20 to better support the target frequency band.

[0084] Please refer to Figure 17 , Figure 17 , which is a partial structural schematic diagram of an electronic device provided in another embodiment of the present application. Among them, Figure 17 For the electronic device shown in (a) in Figure 2 , the example of the antenna assembly 10 further including the second matching circuit M2 combined into Figure 17 For the electronic device shown in (b) in Figure 3 , the example of the antenna assembly 10 further including the second matching circuit M2 combined into

[0085] In this embodiment, the electronic device 1 includes an antenna assembly 10 and a conductive decorative member 20. The antenna assembly 10 includes a radiator 110, a feed source S, and a first matching circuit M1. The radiator 110, the feed source S, and the first matching circuit M1 are as described above and will not be elaborated here.

[0086] The second matching circuit M2 is used to adjust the resonant frequency point of the first resonant mode, so that the radiator 110 supports the required target frequency band, and the radiator 110 has better performance in the target frequency band.

[0087] Please continue to refer to Figures 6 to 15 and Figure 17 , the second matching circuit M2 includes one or more second matching sub - circuits 221, and the second matching sub - circuit 221 includes Figures 6 to 15 at least one of the circuits in

[0088] Please refer to Figure 6 , the second matching sub - circuit 221 includes a capacitor C0. The capacitor C0 can be, but is not limited to, a variable capacitor.

[0089] Please refer to Figure 7 , the second matching sub - circuit 221 includes an inductor L0. The inductor L0 can be, but is not limited to, a variable inductor.

[0090] Please refer to Figure 8 , the second matching sub - circuit 221 includes a series unit 1222 of a capacitor C0 and an inductor L0.

[0091] Please refer to Figure 9 , the second matching sub - circuit 221 includes a parallel unit 1221 of a capacitor C0 and an inductor L0.

[0092] Please refer to Figure 10 , the second matching sub - circuit 221 includes a first capacitor C1, an inductor L0, and a second capacitor C2. The first capacitor C1 and the inductor L0 are connected in parallel to form a parallel unit 1221, and the second capacitor C2 is connected in series with the parallel unit 1221.

[0093] Please refer to Figure 11 , the second matching sub - circuit 221 includes a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 and the first inductor L1 are connected in parallel to form a parallel unit 1221, and the second inductor L2 is connected in series with the parallel unit 1221.

[0094] Please refer to Figure 12 , the second matching sub - circuit 221 includes an inductor L0, a first capacitor C1, and a second capacitor C2. The inductor L0 and the first capacitor C1 are connected in series to form a series unit 1222, and the second capacitor C2 is connected in parallel with the series unit 1222.

[0095] Please refer to Figure 13 , the second matching sub - circuit 221 includes a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 and the first inductor L1 are connected in series to form a series unit 1222, and the second inductor L2 is connected in parallel with the series unit 1222.

[0096] Please refer to Figure 14 , the second matching sub - circuit 221 includes a first capacitor C1, a first inductor L1, a second capacitor C2, and a second inductor L2. The first capacitor C1 and the first inductor L1 are connected in parallel to form a first parallel unit 1221a, the second capacitor C2 and the second inductor L2 are connected in parallel to form a second parallel unit 1221b, and the first parallel unit 1221a is connected in series with the second parallel unit 1221b.

[0097] Please refer to Figure 15 , the second matching sub - circuit 221 includes a first capacitor C1, a first inductor L1, a second capacitor C2, and a second inductor L2. The first capacitor C1 and the first inductor L1 are connected in series to form a first series unit 1222a, the second capacitor C2 and the second inductor L2 are connected in series to form a second series unit 1222b, and the first series unit 1222a is connected in parallel with the second series unit 1222b.

[0098] The second matching sub - circuit 221 is used to adjust the resonant frequency of the second resonant mode. Thus, according to the specific frequency band of the target frequency band, one of the multiple second matching sub - circuits 221 can be selected by the switching switch 121, so that the radiator 110 can operate in the target frequency band that needs to be supported.

[0099] Please refer to Figure 2 、 Figure 3 and other attached drawings. The radiator 110 includes a ground end 112 and a free end 111. The ground end 112 is grounded. Among them, the feeding point P0 is located between the ground end 112 and the free end 111. The first resonance mode includes a quarter-wavelength mode from the feeding point P0 of the radiator 110 to the free end 111.

[0100] The way that the ground end 112 is grounded can be but is not limited to being electrically connected to the ground pole of the electronic device 1 through a grounding component. The grounding component can be but is not limited to a conductive elastic sheet, or conductive adhesive, or conductive wire, etc.

[0101] The first resonance mode includes a quarter-wavelength mode from the feeding point P0 of the radiator 110 to the free end 111, and the first resonance mode is used to support the target frequency band. Therefore, the quarter-wavelength mode from the feeding point P0 to the free end 111 supports the target frequency band.

[0102] The quarter-wavelength mode is also called the fundamental mode, and the fundamental mode has a high radiation efficiency. In this embodiment, the first resonance mode includes a quarter-wavelength mode from the feeding point P0 of the radiator 110 to the free end 111, that is, the fundamental mode from the feeding point P0 of the radiator 110 to the free end 111 supports the target frequency band. Thus, the radiation efficiency of the target frequency band can be further improved.

[0103] Please refer to Figure 1 and Figure 2 、or Figure 1 and Figure 3 、or Figure 1 and Figure 17 and other attached drawings. The electronic device 1 has a first side 1a and a second side 1b that are bent and connected. The length of the second side 1b is greater than the length of the first side 1a, and the radiator 110 corresponds to the part of the second side 1b adjacent to the first side 1a.

[0104] The length of the second side 1b is greater than the length of the first side 1a. Therefore, the first side 1a is the short side of the electronic device 1, and the second side 1b is the long side of the electronic device 1. The radiator 110 corresponds to the part of the second side 1b adjacent to the first side 1a. Therefore, when the electronic device 1 is in the portrait state and the first side 1a is the top side of the electronic device 1, the user's hand is not easily blocked from the radiator 110. Therefore, the electronic device 1 can have better performance in the target frequency band.

[0105] Further, when the electronic device 1 is in the portrait mode, the first side 1a is the side located at the top of the electronic device 1, and the grounded end 112 faces away from the first side 1a as compared with the free end 111.

[0106] Please refer to Figure 18 , Figure 18 which is a circuit block diagram of an electronic device provided by an embodiment of the present application. The electronic device 1 further includes a controller 60. The controller 60 is electrically connected to the switching switch 121 and controls the state of the switching switch 121, so that the performance of the target frequency band supported by the switching switch 121 in the current working state is better than the performance of the target frequency band supported by the switching switch 121 in other states.

[0107] In one embodiment, the controller 60 controls the switching switch 121, obtains the performance of the switching switch 121 in the target frequency band in each state, and controls the switching switch 121 to switch to the state with the optimal performance in the target frequency band as the current working state. Wherein, when the switching switch 121 in the first matching circuit M1 is in different states, it is electrically connected to different first matching sub-circuits 122 in the first matching circuit M1.

[0108] In one embodiment, when the electronic device 1 is in a preset posture, the controller 60 compares the performance of the switching switch 121 in supporting the target frequency band in each state, and controls the switching switch 121 to switch to the state with the optimal target performance, and the state with the optimal target frequency band performance is the current working state.

[0109] The performance parameter of the target signal may be, but is not limited to, reference signal receiving power (RSRP), or signal to interference plus noise ratio (SINR).

[0110] The electronic device 1 provided by the embodiment of the present application can achieve better communication performance and larger radiation pattern coverage of the electronic device 1 in the target frequency band.

[0111] Please continue to refer to Figure 2 , Figure 3In the accompanying drawings, etc., in this embodiment, the decorative member 20 has a first decorative portion 210 close to the radiator 110 and a second decorative portion 220 facing away from the radiator 110. In this embodiment, the first decorative portion 210 is the portion of the radiator 110 close to the radiator 110 and is half of the decorative member 20, and the second decorative portion 220 is the portion of the radiator 110 facing away from the radiator 110 and is half of the decorative member 20. The connection point P1 is located in the second decorative portion 220. In this way, the components where the connection point P1 is electrically connected to the first matching circuit M1 and the components where the feeding point P0 is electrically connected to the first matching circuit M1 are not likely to interfere, facilitating the connection between the connection point P1 and the first matching circuit M1 and facilitating the connection between the feeding point P0 and the second matching circuit M2.

[0112] In Figure 2 and Figure 3 ..., taking the outer contour of the decorative member 20 as a circle and dividing the decorative member 20 into a first decorative portion 210 and a second decorative portion 220 by a dotted line passing through the center of the decorative member 20. Among them, the extending direction of the dotted line is perpendicular to the arrangement direction of the radiator 110 and the decorative member 20.

[0113] Next, the electronic device 1 provided in the embodiment of the present application is simulated and described.

[0114] Please refer to Figure 19 , Figure 19This is a simulation diagram of the S-parameter curves of the first matching circuit in the first state and the second state in the electronic device of the present application. In this simulation diagram, the abscissa is frequency, with the unit of GHz, and the ordinate is S-parameter, with the unit of dB. In this simulation diagram, the target frequency band is taken as the N79 frequency band for simulation. It can be understood that it should not be construed as a limitation on the implementation manner of the present application. Among them, curve ① (the black curve in the figure) is the S-parameter curve when the first matching circuit M1 is in the first state; curve ② (the red curve in the figure) is the S-parameter curve when the first matching circuit M1 is in the second state. When the first matching circuit M1 is in the first state, the first matching circuit M1 is short-circuited to the ground electrode through the switching switch 121, and the decorative member 20 is equivalent to being directly electrically connected to the ground electrode (also called the floor). Therefore, the decorative member 20 has no effect on the radiation of the antenna assembly 10 in the target frequency band. As can be seen from curve ①, when the first matching circuit M1 is in the first state, the electronic device 1 has a resonance in the target frequency band. In this embodiment, for illustration purposes, when the first matching circuit M1 is in the second state, the switching switch 121 of the first matching circuit M1 is grounded through the capacitor C0 (that is, the first matching sub-circuit 122 is the capacitor C0). The current of the radiator 110 and the current of the ground electrode can be magnetically coupled to the decorative member 20. Therefore, the electronic device 1 provided by the embodiment of the present application has two resonances in the target frequency band. Among them, the resonance when the radiator 110 supports the target frequency band is the first resonance mode, and the resonance when the decorative member 20 supports the target frequency band is the second resonance mode. In this simulation diagram, the resonance at point 1 on curve ② is the first resonance mode, and the resonance at point 2 on curve ② is the second resonance mode. By adjusting the capacitance value C0 of the capacitor C0, the resonance supported by the second resonance mode can be adjusted to the target frequency band. In this embodiment, the target frequency band is the N79 frequency band, and both the first resonance mode and the second resonance mode are the N79 frequency band. It can be seen from this that for the electronic device 1 provided by the embodiment of the present application, when the first matching circuit M1 is in the first state, the electronic device 1 has one resonance mode in the target frequency band; when the first matching circuit M1 is in the second state, the electronic device 1 has two resonance modes in the target frequency band. Therefore, compared with the first matching circuit M1 being in the first state, when the first matching circuit M1 is in the second state, the electronic device 1 has one more resonance mode in the target frequency band. In addition, compared with the first matching circuit M1 being in the first state, when the first matching circuit M1 is in the second state, the bandwidth of the electronic device 1 in the target frequency band is wider. Therefore, when the first matching circuit M1 is in the second state, the electronic device 1 has better antenna performance in the target frequency band.

[0115] Please refer to Figure 20 and Figure 21 , Figure 20 which is a schematic diagram of the current distribution supporting the target frequency band when the first matching circuit in the electronic device of the present application is in the first state; Figure 21 which is a schematic diagram of the current distribution supporting the target frequency band when the first matching circuit in the electronic device of the present application is in the second state. It can be seen from Figure 20 that when the first matching circuit M1 is in the first state, the first matching circuit M1 is short-circuited to the ground electrode through the switching switch 121, and the decorative member 20 is equivalent to being directly electrically connected to the ground electrode (also referred to as the floor). The current is mainly concentrated in the radiator 110 and the area near the radiator 110, and there is almost no current distribution on the decorative member 20. Therefore, the decorative member 20 has no effect on the radiation of the antenna assembly 10 in the target frequency band. It can be seen from Figure 21 that when the first matching circuit M1 is in the second state, the switching switch 121 of the first matching circuit M1 is grounded through the capacitor C0 (that is, the first matching sub-circuit 122 is the capacitor C0). There is a current distribution on the radiator 110, and there is also a certain current distribution on the decorative member 20. This is because the decorative member 20 generates a current distribution by coupling the current of the radiator 110 and the current of the ground electrode.

[0116] Please refer to Figure 22 , Figure 22System radiation efficiency and system total efficiency curve simulation diagrams of the first matching circuit in the first state and the second state in an electronic device supporting a target frequency band. In this simulation diagram, the abscissa is frequency, with the unit of GHz, and the ordinate is S-parameter, with the unit of dB. In this simulation diagram, the target frequency band is taken as the N79 frequency band for simulation. It can be understood that this should not be construed as a limitation on the embodiments of the present application. In this simulation diagram, curve ① is the system radiation efficiency curve of the first matching circuit M1 of the electronic device 1 in the second state; curve ② is the system radiation efficiency curve of the first matching circuit M1 of the electronic device 1 in the first state; curve ③ is the system total efficiency curve of the first matching circuit M1 of the electronic device 1 in the second state; curve ④ is the system total efficiency curve of the first matching circuit M1 of the electronic device 1 in the first state. Among them, the N79 frequency band corresponds to points "1" and "2" in the figure. It can be seen that compared with the first matching circuit M1 of the electronic device 1 in the first state, the system radiation efficiency and the system total efficiency of the first matching circuit M1 of the electronic device 1 in the second state in the target frequency band are both increased by about 0.6 dB. It can be seen that for the electronic device 1 provided by the embodiments of the present application, compared with the first matching circuit M1 of the electronic device 1 in the first state, when the first matching circuit M1 of the electronic device 1 is in the second state, the system radiation efficiency and the system total efficiency of the electronic device 1 in the target frequency band are both improved.

[0117] Please refer to Figure 23 and Figure 24 , Figure 23 The radiation pattern of the first matching circuit in the first state in the electronic device supporting the target frequency band; Figure 24 is the radiation pattern of the first matching circuit in the second state in the electronic device supporting the target frequency band. As Figure 23 can be seen, when the first matching circuit M1 of the electronic device 1 is in the first state, the first radiation pattern of the antenna assembly 10 in the target frequency band mainly faces the bottom of the electronic device 1. As Figure 24 can be seen, when the second matching circuit M2 of the electronic device 1 is in the second state, in addition to being distributed at the bottom of the electronic device 1, the second radiation pattern of the antenna assembly 10 in the target frequency band also faces the back cover 70 (also called the back case) part of the electronic device 1. As Figure 23 and Figure 24It can be seen that, compared with the first radiation pattern of the second matching circuit M2 of the electronic device 1 in the target frequency band when in the first state, the second radiation pattern of the second matching circuit M2 of the electronic device 1 in the target frequency band when in the second state has a larger coverage range and a larger signal strength.

[0118] Please refer to Figure 25 and Figure 26 , Figure 25 is the radiation pattern when the first matching circuit of the electronic device is in the first state, supports the target frequency band, and is held by the user's right hand; Figure 26 is the radiation pattern when the first matching circuit of the electronic device is in the second state, supports the target frequency band, and is held by the user's right hand. From Figure 25 and Figure 26 It can be seen that, compared with the first radiation pattern of the second matching circuit M2 of the electronic device 1 in the target frequency band and held by the user's right hand when in the first state, the second radiation pattern of the second matching circuit M2 of the electronic device 1 in the target frequency band and held by the user's right hand when in the second state has a larger coverage range and a larger signal strength.

[0119] For the electronic device 1 provided in the embodiment of the present application, the decorative member 20 will not or hardly affect the resonant frequency point of the first resonant mode supported by the radiator 110. Therefore, it is not necessary to adjust the second matching circuit M2, but to adjust the first matching circuit M1. When the first matching circuit M1 is in the first state, the antenna assembly 10 has a first radiation pattern in the target frequency band; when the first matching circuit M1 is in the second state, the antenna assembly 10 has a second radiation pattern in the target frequency band, where the second radiation pattern is different from the first radiation pattern. Therefore, when the first matching circuit M1 is in the first state, the first radiation pattern of the antenna assembly 10 in the target frequency band can be used as the first beam (which can be simply referred to as "beam 1"); when the first matching circuit M1 is in the second state, the second radiation pattern of the antenna assembly 10 in the target frequency band can be used as the second beam (which can be simply referred to as "beam 2"), so as to realize the switching between the first beam and the second beam. In many environments, the incoming wave of the signal in the target frequency band has obvious directivity. The electronic device 1 can detect the parameter performance of the signal in the target frequency band to control the switching switch 121, so as to realize a larger coverage range of the radiation pattern in the target frequency band and achieve the optimal performance in the target frequency band. The performance parameters of the target signal can be, but not limited to, the reference signal receiving power (RSRP), or the signal-to-interference-plus-noise ratio (SINR).

[0120] In summary, for the electronic device 1 provided by an embodiment of the present application, the efficiency of the target frequency band is enhanced by using the decorative member 20. Taking the target frequency band as N79 as an example, the efficiency is improved by 0.6 dB.

[0121] In addition, for the electronic device 1 provided by an embodiment of the present application, the coverage range of the radiation pattern of the target frequency band is enhanced by using the first matching circuit M1. In one embodiment, the radiation pattern of the electronic device 1 operating in the target frequency band can change from only covering the bottom of the electronic device 1 to covering the bottom and the back of the electronic device 1.

[0122] In one embodiment, the electronic device 1 further includes a controller 60. By performing real-time adaptive detection on the signal of the target frequency band and controlling the switching of the switching switch 121 by the controller 60, the communication performance of the target frequency band can be improved.

[0123] In one embodiment, for the electronic device 1 provided by the embodiment of the present application, the decorative member 20 is a structure of the present application of the electronic device 1, and no additional addition is required. The second resonance mode is generated by the coupling of the decorative member 20 and the radiator 110, and the frequency band supported by the second resonance mode is adjusted by the first matching circuit M1, so that the frequency band supported by the second resonance mode falls within the range of the target frequency band, that is, the second resonance mode supports the target frequency band, thereby improving the efficiency of the target frequency band and improving the coverage range of the radiation pattern of the target frequency band. In one embodiment, the first matching sub-circuit 122 in the first matching circuit M1 includes a capacitor, and the frequency band supported by the second resonance mode is adjusted by adjusting the size of the capacitor, so that the frequency band supported by the second resonance mode falls within the range of the target frequency band, that is, the second resonance mode supports the target frequency band, thereby improving the efficiency of the target frequency band and improving the coverage range of the radiation pattern of the target frequency band.

[0124] For the electronic device 1 provided by the embodiment of the present application, taking the number of the antenna assemblies 10 as one as an example for illustration, it can be understood that the present application does not limit the number of the antenna assemblies 10. The electronic device 1 may include a plurality of antenna assemblies 10, and the positions of each antenna assembly 10 in the electronic device 1 are different, and intelligent switching can be realized according to the plurality of antenna assemblies 10.

[0125] Please refer to Figure 1 and Figure 27 , Figure 27Schematic diagram of another perspective of the electronic device provided by the embodiment of the present application. The decorative member 20 is used to decorate the electronic device 1. In one embodiment, the decorative member 20 can be, but is not limited to, a rear camera decorative member or a flash decorative member, but is not limited thereto. In one embodiment, the electronic device 1 further includes a middle frame 30, a display screen 50, and a rear cover 70. The display screen 50 is disposed on one side of the middle frame 30. The display screen 50 is a component for implementing the display function in the electronic device 1. The display screen 50 can be, but is not limited to, a screen with a touch function or a screen without a touch function, and the present application does not make any limitation thereto. The rear cover 70 is disposed on the other side of the middle frame 30. In other words, the rear cover 70 and the display screen 50 are respectively disposed on two opposite sides of the middle frame 30. When the electronic device 1 further includes a battery, the rear cover 70 is also referred to as a battery cover. The material of the rear cover 70 can be metal or non-metal, and no limitation is made in this embodiment. The decorative member 20 can be disposed on a side of the rear cover 70 facing away from the display screen 50.

[0126] It can be understood that the introduction of the embodiment of the present application is an introduction to an application environment of the antenna assembly 10 and the decorative member 20, and should not be construed as a limitation to the electronic device 1 provided by the embodiment of the present application.

[0127] The above are some embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present application.

Claims

1. An electronic device, characterized in that, The electronic device includes an antenna assembly and a conductive decorative member. The antenna assembly includes: A radiator; A feeder for exciting the radiator to generate a first resonance mode, and the first resonance mode is used to support a target frequency band; The decorative member has a connection point, the decorative member is disposed at an interval from the radiator, and is used to couple with the radiator. When the decorative member is coupled with the radiator, a second resonance mode is generated, and the second resonance mode is used to support the target frequency band; A first matching circuit, one end of the first matching circuit is electrically connected to the connection point, and the other end of the first matching circuit is grounded. The first matching circuit is used to adjust the radiation pattern of the target frequency band.

2. The electronic device according to claim 1, wherein The first matching circuit includes a switching switch and at least one first matching sub-circuit; The first matching circuit has a first state in which the switching switch is directly electrically connected to the ground pole. When the first matching circuit is in the first state, the antenna assembly has a first radiation pattern in the target frequency band; The first matching circuit further has a second state in which the switching switch is electrically connected to the first matching sub-circuit to the ground pole. When the first matching circuit is in the second state, the antenna assembly has a second radiation pattern in the target frequency band, where the second radiation pattern is different from the first radiation pattern.

3. The electronic device according to claim 2, characterized in that The first matching sub-circuit includes at least one of the following circuits: A capacitor; An inductor; A series unit of a capacitor and an inductor; A parallel unit of a capacitor and an inductor; A first capacitor, an inductor, and a second capacitor. The first capacitor and the inductor are connected in parallel to form a parallel unit, and the second capacitor is connected in series with the parallel unit; A capacitor, a first inductor, and a second inductor. The capacitor and the first inductor are connected in parallel to form a parallel unit, and the second inductor is connected in series with the parallel unit; An inductor, a first capacitor, and a second capacitor. The inductor and the first capacitor are connected in series to form a series unit, and the second capacitor is connected in parallel with the series unit; A capacitor, a first inductor, and a second inductor. The capacitor and the first inductor are connected in series to form a series unit, and the second inductor is connected in parallel with the series unit; A first capacitor, a first inductor, a second capacitor, and a second inductor. The first capacitor and the first inductor are connected in parallel to form a first parallel unit, the second capacitor and the second inductor are connected in parallel to form a second parallel unit, and the first parallel unit is connected in series with the second parallel unit; A first capacitor, a first inductor, a second capacitor, and a second inductor. The first capacitor and the first inductor are connected in series to form a first series unit, the second capacitor and the second inductor are connected in series to form a second series unit, and the first series unit is connected in parallel with the second series unit.

4. The electronic device according to claim 2, wherein, The second resonance mode includes a quarter-wavelength mode of the decorative member.

5. The electronic device according to claim 1, wherein The interval d1 between the decorative member and the radiator satisfies: 2mm ≤ d1 ≤ 8mm.

6. The electronic device according to claim 1, characterized in that, The maximum distance d2 between two points of the decorative member satisfies: 2λ / 3 ≤ d2 ≤ λ, where λ is the wavelength corresponding to the center frequency point of the target frequency band.

7. The electronic device according to any one of claims 1-6, characterized in that, The radiator has a feeding point. The antenna assembly further includes: A second matching circuit, one end of the second matching circuit is electrically connected to the feed source, the other end of the second matching circuit is electrically connected to the feeding point, and the second matching circuit is used to adjust the resonant frequency point of the first resonant mode.

8. The electronic device according to claim 7, characterized in that, The second matching circuit includes one or more second matching sub-circuits, and the second matching sub-circuit includes at least one of the following circuits: Capacitor; Inductor; Series unit of capacitor and inductor; Parallel unit of capacitor and inductor; A first capacitor, an inductor and a second capacitor, the first capacitor is in parallel with the inductor to form a parallel unit, and the second capacitor is in series with the parallel unit; A capacitor, a first inductor and a second inductor, the capacitor is in parallel with the first inductor to form a parallel unit, and the second inductor is in series with the parallel unit; An inductor, a first capacitor and a second capacitor, the inductor is in series with the first capacitor to form a series unit, and the second capacitor is in parallel with the series unit; A capacitor, a first inductor and a second inductor, the capacitor is in series with the first inductor to form a series unit, and the second inductor is in parallel with the series unit; A first capacitor, a first inductor, a second capacitor and a second inductor, the first capacitor is in parallel with the first inductor to form a first parallel unit, the second capacitor is in parallel with the second inductor to form a second parallel unit, and the first parallel unit is in series with the second parallel unit; A first capacitor, a first inductor, a second capacitor and a second inductor, the first capacitor is in series with the first inductor to form a first series unit, the second capacitor is in series with the second inductor to form a second series unit, and the first series unit is in parallel with the second series unit.

9. The electronic device according to claim 7, wherein The radiator includes a grounding end and a free end, the grounding end is grounded, and the feeding point is located between the grounding end and the free end; The first resonant mode includes a quarter-wavelength mode from the feeding point of the radiator to the free end.

10. The electronic device according to claim 2, characterized in that, The electronic device has a first side and a second side that are bent and connected, the length of the second side is greater than the length of the first side, and the radiator corresponds to the part of the second side adjacent to the first side.

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