Antenna assembly and electronic equipment

Abstract

The embodiment of the invention provides electronic equipment. The electronic equipment comprises a grounding plate, an annular metal piece and a feed source, the annular metal piece and the grounding plate are arranged at an interval along the thickness direction of the electronic equipment, and the annular metal piece is closer to the back side of the electronic equipment relative to the grounding plate; wherein the annular metal piece comprises a feeding point and at least two grounding points, the at least two grounding points are used for being connected with the grounding plate to be grounded, and the at least two grounding points comprise a first target grounding point and a second target grounding point which are located on the two sides of the feeding point and are closest to the feeding point. The annular metal piece comprises a radiation part which is located between the first target grounding point and the second target grounding point and comprises the feeding point. And the feed source is electrically connected with the feed point to excite the radiation part to support receiving and transmitting of an electromagnetic wave signal of a preset frequency band. The invention also provides an antenna assembly. According to the invention, the communication performance in the head-hand state can be effectively improved.

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 having the antenna assembly. Background Art

[0002] At present, with the popularization of 5G communication technology, people's communication experience is getting better and better. However, more and more antennas are currently required, and as full-screen displays gradually become mainstream, the clearance space left for antennas is getting smaller and smaller, which has affected the performance of some antennas. For example, some antennas in current electronic devices have acceptable communication performance when the electronic device is handheld and away from the head or in free space, but in the head-hand state, that is, when the user holds the electronic device close to the head, the communication performance decreases significantly, affecting the user experience. Summary of the invention

[0003] The present application provides an antenna assembly and an electronic device to solve the above problems.

[0004] In a first aspect, an electronic device is provided, the electronic device comprising a ground plate, an annular metal part and a feed source. The ground plate is used to provide a ground potential. The annular metal part and the ground plate are spaced apart along the thickness direction of the electronic device, and the annular metal part is closer to the back side of the electronic device relative to the ground plate; wherein the annular metal part comprises a feeding point and at least two grounding points, the at least two grounding points are used to connect to the ground plate and be grounded, and the at least two grounding points include a first target grounding point and a second target grounding point located on both sides of the feeding point and closest to the feeding point; wherein the annular metal part includes a radiating part located between the first target grounding point and the second target grounding point and including the feeding point, and the two ends of the radiating part are respectively grounded through the first target grounding point and the second target grounding point to form a slot antenna. The feed source is electrically connected to the feeding point, and is used to excite the radiating part to support the transmission and reception of electromagnetic wave signals in a preset frequency band.

[0005] In the second aspect, an antenna assembly is also provided, the antenna assembly comprising an annular metal part and a feed source. The annular metal part comprises a feeding point and at least two grounding points, the at least two grounding points are used for grounding, and the at least two grounding points include a first target grounding point and a second target grounding point located on both sides of the feeding point and closest to the feeding point; the annular metal part comprises a radiating part located between the first target grounding point and the second target grounding point and including the feeding point, and the two ends of the radiating part are respectively grounded through the first target grounding point and the second target grounding point to form a slot antenna. The feed source is electrically connected to the feeding point, and is used to excite the radiating part to support the transmission and reception of electromagnetic wave signals in a preset frequency band.

[0006] The antenna assembly and electronic device of the present application are arranged with the annular metal part and the ground plate spaced apart along the thickness direction of the electronic device, and the annular metal part is closer to the back side of the electronic device relative to the ground plate, and the annular metal part includes a radiating part located between the first target grounding point and the second target grounding point and including the feeding point, and the two ends of the radiating part are connected to the ground plate to form a slot antenna, so that when the radiating part supports the transmission and reception of electromagnetic wave signals of a preset frequency band under the excitation of the feed source, it can effectively generate a vertical electric field along the direction from the annular metal part to the ground plate or from the ground plate to the annular metal part, that is, the electric field direction is an electric field along the thickness direction of the electronic device. Therefore, when the electronic device is in a human head and hand state, that is, when the user holds the electronic device and puts it close to the head, since the vertical electric field is basically perpendicular to the user's skin surface, it can reduce human body absorption, and it is easy to form surface waves on the human body surface for propagation, and it can effectively improve the antenna radiation performance in the human head and hand state. In addition, in the present application, since the annular metal part is closer to the back side of the electronic device than the ground plate, and in the head-hand state, the user mainly holds the display screen side of the electronic device 100 close to the head, the back side of the electronic device is facing the surrounding environment, so that the electromagnetic wave signal radiated by the annular metal part is not blocked, which can effectively reduce the interference of the human body and improve the communication quality in the usage scenario where the electronic device is close to the user's head to make a call. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0008] Figure 1 It is a schematic plan view of an electronic device in some embodiments of the present application.

[0009] Figure 2 This is a further structural schematic diagram of the annular metal part of the electronic device in some embodiments of the present application.

[0010] Figure 3 Another schematic diagram of the structure of the annular metal part of the electronic device in some embodiments of the present application.

[0011] Figure 4 This is a further structural schematic diagram of a partial structure of an electronic device including the annular metal part in some embodiments of the present application.

[0012] Figure 5 This is a schematic diagram of current distribution on the annular metal part when the electronic device in some embodiments of the present application operates in the preset frequency band.

[0013] Figure 6 A schematic diagram of the electric field distribution when the electronic device in some embodiments of the present application operates in the preset frequency band.

[0014] Figure 7 This is another structural schematic diagram of a partial structure of an electronic device including the annular metal part in some embodiments of the present application.

[0015] Figure 8 Another schematic plan view of an electronic device in some embodiments of the present application.

[0016] Fig. 9 This is a schematic diagram of the electronic device being held in a head and hand state in some embodiments of the present application.

[0017] Fig.10 It is a three-dimensional radiation pattern of left-hand circular polarization when the electronic device in some embodiments of the present application is in a head-hand state and operates in the preset frequency band.

[0018] Fig.11 It is a two-dimensional radiation pattern of left-hand circular polarization when the electronic device in some embodiments of the present application is in a head-hand state and operates in the preset frequency band.

[0019] Fig.12 This is a structural block diagram of an electronic device in some embodiments of the present application. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "thickness", "width", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than implying or indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The term "connection" in this application, unless otherwise specified, mainly refers to a physical structural connection, and may also include electrical connection, direct connection or indirect connection, etc., if specified. In the description of the embodiments of the present invention, the terms "first", "second", etc. are not specific, but are used to distinguish objects with the same name. If specified in the specification, the objects with the same name referred to by the terms "first", "second", etc. may be the same objects.

[0022] See also Figure 1 , is a schematic plan view of an electronic device 100 in some embodiments of the present application. Figure 1 As shown, the electronic device 100 includes a ground plate 10, an annular metal member 11, and a feed source 12. The ground plate 10 is used to provide a ground potential, that is, a zero potential or a zero level. The annular metal member 11 and the ground plate 10 are spaced apart along the thickness direction of the electronic device 100, and the annular metal member 11 is closer to the back side of the electronic device 100 relative to the ground plate 10. The annular metal member 11 includes a feeding point F1 and at least two grounding points G1, wherein the at least two grounding points G1 are used to connect to the ground plate 10 for grounding, and the at least two grounding points G1 include a first target grounding point G11 and a second target grounding point G12 located on both sides of the feeding point F1 and closest to the feeding point F1. The annular metal member 11 includes a radiating portion P1 located between the first target grounding point G11 and the second target grounding point G12 and including the feeding point F1, and both ends of the radiating portion P1 are grounded through the first target grounding point G11 and the second target grounding point G12 respectively to form a slot antenna. The feed source 12 is electrically connected to the feeding point F1 and is used to excite the radiating part P1 to support the transmission and reception of electromagnetic wave signals in a preset frequency band.

[0023] Therefore, in the present application, the annular metal part 11 and the grounding plate 10 are spaced apart along the thickness direction of the electronic device 100, and the annular metal part 11 is closer to the back side of the electronic device 100 relative to the grounding plate 10, and the annular metal part 11 includes a radiating part P1 located between the first target grounding point G11 and the second target grounding point G12 and including the feeding point F1, and both ends of the radiating part P1 are grounded to the grounding plate 10 to form a slot antenna, so that when the radiating part P1 supports the reception and transmission of electromagnetic wave signals of a preset frequency band under the excitation of the feed source 12, it can effectively generate a vertical electric field along the direction from the annular metal part 11 to the grounding plate 10 or from the grounding plate 10 to the annular metal part 11, that is, the electric field direction is an electric field along the thickness direction of the electronic device 100. Thus, when the electronic device 100 is in a head-hand state, that is, when the user holds the electronic device 100 close to the head, since the vertical electric field is basically perpendicular to the user's skin surface, it can reduce human body absorption and easily form surface waves on the human body surface for propagation, thereby effectively improving the antenna radiation performance in the head-hand state.

[0024] In addition, in the present application, since the annular metal part 11 is closer to the back side of the electronic device 100 than the ground plate 10, and in the head-hand state, the user mainly holds the display screen side of the electronic device 100 close to the head, therefore, the back side of the electronic device 100 is facing the surrounding environment, so that the electromagnetic wave signal radiated by the annular metal part 11 is not blocked, and in the use scenario where the electronic device 100 is close to the user's head to make a call, the interference of the human body can be effectively reduced and the communication quality can be improved.

[0025] Among them, the two ends of the radiating part P1 are actually the positions where the first target grounding point G11 and the second target grounding point G12 are located. Since the first target grounding point G11 and the second target grounding point G12 are grounded, the two ends of the radiating part P1 are also grounded through the first target grounding point G11 and the second target grounding point G12, respectively, thereby forming a slot antenna.

[0026] The annular metal part 11 may be a closed ring or an open ring. For example, in some embodiments, the annular metal part 11 is a closed ring, and the annular metal part 11 may include other parts in addition to the radiating part P1 located between the first target grounding point G11 and the second target grounding point G12 and including the feeding point F1. For another example, in some embodiments, the annular metal part 11 may be an open ring, such as a semi-ring, and may only include the radiating part P1 located between the first target grounding point G11 and the second target grounding point G12 and including the feeding point F1.

[0027] in, Figure 1 In the figure, the annular metal part 11 is taken as an example of a closed annular shape.

[0028] In some embodiments, the equivalent electrical length of the radiating part P1 is λ / 2, wherein λ is the wavelength corresponding to the preset frequency band. The radiating part P1 operates in a half-wavelength resonance mode under the excitation of the feed source 12, and supports the transmission and reception of electromagnetic wave signals in the preset frequency band.

[0029] That is, in some cases, the radiation portion P1 operates in a half-wavelength resonance mode, and the equivalent electrical length of the radiation portion P1 is λ / 2, and is able to resonate in the preset frequency band, thereby supporting the transmission and reception of electromagnetic wave signals in the preset frequency band.

[0030] Among them, in the present application, the first target grounding point G11 and the second target grounding point G12 are located on both sides of the feeding point F1 and are closest to the feeding point F1, which means that the first target grounding point G11 and the second target grounding point G12 are respectively located on both sides of the feeding point F1, that is, the feeding point F1 is located between the first target grounding point G11 and the second target grounding point G12, and there are no other grounding points between the feeding point F1 and the first target grounding point G11, and there are no other grounding points between the feeding point F1 and the second target grounding point G12.

[0031] Among them, in this application, the thickness direction of the electronic device 100 refers to the direction perpendicular to the display surface of the display screen of the electronic device 100, that is, the direction from the front to the back or the back to the front of the electronic device 100.

[0032] See also Figure 2 , is a further structural diagram of the annular metal member 11 of the electronic device 100 in some embodiments of the present application. In some embodiments, as Figure 2As shown, the annular metal member 11 further includes a non-radiating portion P2 located between the first target grounding point G11 and the second target grounding point G12 and excluding the feeding point F1, that is, the first target grounding point G11 and the second target grounding point G12 divide the annular metal member 11 into a radiating portion P1 including the feeding point F1 and a non-radiating portion P2 excluding the feeding point F1. Figure 2 As shown, the at least two grounding points G1 further include at least one third target grounding point G13 , and the at least one third target grounding point G13 is located at the non-radiating portion P2 of the annular metal member 11 .

[0033] That is, compared to Figure 1 The structure of the electronic device 100 shown in FIG. 1 may be, in some embodiments, Figure 2 As shown, the first target grounding point G11 and the second target grounding point G12 divide the annular metal member 11 into a radiating part P1 including the feeding point F1 and a non-radiating part P2 excluding the feeding point F1, and the at least two grounding points G1 also include at least one third target grounding point G13, and the at least one third target grounding point G13 is located in the non-radiating part P2 of the annular metal member 11.

[0034] Among them, Figure 2 As shown, the first target grounding point G11 and the second target grounding point G12 divide the annular metal member 11 into a radiating portion P1 and a non-radiating portion P2, wherein the radiating portion P1 is a portion including the feeding point F1, and the non-radiating portion P2 is a portion not including the feeding point F1, and the first target grounding point G11 and the second target grounding point G12 are equivalent to the dividing point between the radiating portion P1 and the non-radiating portion P2. In the non-radiating portion P2, other grounding points G1 may also be included, that is, at least one third target grounding point G13 may also be included.

[0035] Among them, when there is no other grounding point G1 in the non-radiating part P2, it may be coupled and resonated with the ground GND, that is, the ground plate 10 to generate noise. Therefore, other grounding points G1 can be set on the non-radiating part P2, so that the coupling resonance condition can be destroyed, and the noise generated by the coupling resonance between the non-radiating part P2 and the ground can be avoided or reduced, thereby avoiding or reducing interference with the electromagnetic wave signal in the preset frequency band.

[0036] There are one or more third target grounding points G13 , and the at least one third target grounding point G13 is spaced apart from the first target grounding point G11 and the second target grounding point G12 .

[0037] like Figure 2As shown, the number of the third target grounding points G13 is illustrated by taking three as an example. Obviously, in some embodiments, the number of the third target grounding points G13 may be one, two, four, five or other numbers. When any number of other grounding points G1, i.e., the third target grounding points G13 are grounded on the non-radiating portion P2, the coupling resonance condition between the non-radiating portion P2 and the ground can be destroyed, thereby avoiding or reducing the clutter generated by the coupling resonance between the non-radiating portion P2 and the ground, thereby avoiding or reducing the interference to the satellite communication signal.

[0038] See also Figure 3 , is another structural schematic diagram of the annular metal member 11 of the electronic device 100 in some embodiments of the present application. In some embodiments, as Figure 3 As shown, the third target grounding point G13 is set in all areas of the non-radiating part P2, and the non-radiating part P2 is grounded. Figure 3 In FIG. 1 , the non-radiative portion P2 is entirely black, indicating that the non-radiative portion P2 is entirely grounded.

[0039] That is, in some embodiments, all regions in the non-radiating portion P2 are grounded, that is, the third target grounding point G13 is considered to be set in all regions of the non-radiating portion P2.

[0040] Therefore, in some embodiments, grounding the entire non-radiating part P2 can more effectively destroy the coupling resonance condition between the non-radiating part P2 and the ground, thereby ensuring that the clutter generated by the coupling resonance between the non-radiating part P2 and the ground is avoided, thereby avoiding interference with the satellite communication signal.

[0041] The reason why coupling resonance occurs between the non-radiating part P2 and the ground is that the size of the non-radiating part P2 may meet the coupling resonance condition. For example, the size of the non-radiating part P2 may be close to the size required for the resonance frequency of the fundamental mode or higher harmonics of the electromagnetic wave signal in the preset frequency band, so that coupling resonance can occur. Therefore, in some embodiments, when the size of the non-radiating part P2 does not meet the coupling resonance condition, the non-radiating part P2 may not be provided with any grounding point G1.

[0042] In some embodiments, the feeding point F1 is arranged at the midpoint of the equivalent electrical length of the radiating portion 11, and the equivalent electrical length of the first metal segment 111 between the feeding point F1 and the first target grounding point G11 is equal to the equivalent electrical length of the second metal segment 112 between the feeding point F1 and the second target grounding point G12.

[0043] That is, in some embodiments, Figure 1-Figure 3As shown, the portion of the annular metal member 11 between the feeding point F1 and the first target grounding point G11 is the first metal segment 111, and the portion of the annular metal member 11 between the feeding point F1 and the second target grounding point G12 is the second metal segment 112, and the equivalent electrical lengths of the first metal segment 111 and the second metal segment 112 are equal and both are λ / 4. Therefore, the feeding point F1 is set at the midpoint of the equivalent electrical length of the radiation part 11, that is, the equivalent electrical length of the portion between the feeding point F1 and the first target grounding point G11 and the second target grounding point G12 is the same, so that the radiation part P1 can be better excited to work in the half-wavelength resonance mode, thereby improving the radiation performance.

[0044] The first metal segment 111 and the second metal segment 112 are the radiation portion P1 , that is, the radiation portion P1 includes the first metal segment 111 and the second metal segment 112 .

[0045] In some embodiments, the equivalent electrical length of the radiating portion 11, the equivalent electrical length of the first metal segment 111, and the equivalent electrical length of the second metal segment 112 may be their own equivalent electrical lengths, that is, the equivalent electrical length of the radiating portion 11 may be equal to the physical length of the radiating portion 11, and the equivalent electrical lengths of the first metal segment 111 and the second metal segment 112 may also be equal to the physical lengths of the first metal segment 111 and the second metal segment 112, respectively.

[0046] In some embodiments, the equivalent electrical length of the radiation portion 11 , the equivalent electrical length of the first metal segment 111 , and the equivalent electrical length of the second metal segment 112 may also be equivalent electrical lengths under matching of corresponding matching units.

[0047] See also Figure 4 , which is a further structural schematic diagram of a partial structure of the electronic device 100 including the annular metal part 11 in some embodiments of the present application.

[0048] Wherein, in some embodiments, Figure 4 As shown, the electronic device 100 further includes at least one matching unit M1, and at least one of the first target grounding point G11 and the second target grounding point G12 is grounded through the matching unit M1. When the first target grounding point G11 is grounded through the matching unit M1, the equivalent electrical length of the first metal segment 111 is the equivalent electrical length under the cooperation of the matching unit M1, and when the second target grounding point G12 is grounded through the matching unit M1, the equivalent electrical length of the second metal segment 112 is the equivalent electrical length under the cooperation of the matching unit M1.

[0049] Thus, in some embodiments, at least one of the first target grounding point G11 and the second target grounding point G12 is grounded through the matching unit M1, so that the size of the first metal segment 111 and / or the second metal segment 112 can be designed to be more flexible, without the need for the physical length thereof to be fixed to the required equivalent electrical length, and the equivalent electrical length of the first metal segment 111 and / or the second metal segment 112 under the cooperation of the matching unit M1 can be λ / 4. For example, when the first target grounding point G11 and the second target grounding point G12 are both grounded through the matching unit M1, the equivalent electrical length of the first metal segment 111 under the cooperation of the corresponding matching unit M1 and the equivalent electrical length of the second metal segment 112 under the cooperation of the matching unit M1 can both be λ / 4.

[0050] The matching unit M1 may include an inductor and / or a capacitor.

[0051] Among them, Figure 4 As shown, in some embodiments, it is illustrated by taking the example that the first target grounding point G11 is grounded through the matching unit M1, the second target grounding point G12 is directly grounded, and the matching unit M1 includes a capacitor C1.

[0052] In some embodiments, the first target grounding point G11 may be directly grounded, and the second target grounding point G12 may be grounded through the matching unit M1, or both the first target grounding point G11 and the second target grounding point G12 may be grounded through the corresponding matching unit M1.

[0053] In some embodiments, the matching unit M1 may include multiple capacitors and / or multiple inductors, for example, multiple capacitors connected in series or in parallel, or multiple inductors connected in series or in parallel, or capacitors and inductors connected in series, or capacitors and inductors connected in parallel. Wherein, when the first target ground point G11 and the second target ground point G12 both pass through the corresponding matching unit M1, the structures of the matching units M1 to which the first target ground point G11 and the second target ground point G12 are respectively connected may be the same or different. For example, the matching unit M1 connected to the first target ground point G11 may include an inductor, while the matching unit M1 connected to the second target ground point G12 may include a capacitor.

[0054] in, Figure 4 For Figure 2 Based on the structure shown in FIG. 1 , further structures are shown as examples. Obviously, it is also possible to Figure 3 The structure shown further includes the matching unit M1.

[0055] See also Figure 5, is a schematic diagram of current distribution on the annular metal member 11 when the electronic device 100 in some embodiments of the present application operates in the preset frequency band.

[0056] in, Figure 5 Can be Figure 2 The electronic device 100 shown is a schematic diagram of current distribution obtained by performing a simulation test on the preset frequency band as an example.

[0057] like Figure 5 As shown, when the radiating part P1 operates in the preset frequency band under the excitation of the feed source 12, the current is mainly distributed on the radiating part P1, and the directions of the currents on the first metal segment 111 and the second metal segment 112 of the radiating part P1 are roughly opposite, and it effectively operates in a half-wavelength resonant mode.

[0058] See also Figure 6 , is a schematic diagram of the electric field distribution when the electronic device 100 in some embodiments of the present application operates in the preset frequency band.

[0059] in, Figure 6 It can also be Figure 2 The illustrated diagram is a schematic diagram of electric field distribution obtained by performing a simulation test when the electronic device 100 operates in the preset frequency band.

[0060] like Figure 6 As shown, when the radiating part P1 operates in the preset frequency band under the excitation of the feed source 12, a vertical electric field is generated, that is, an electric field whose direction is parallel to the direction from the annular metal member 11 to the grounding plate 10 or from the grounding plate 10 to the annular metal member 11. Since the annular metal member 11 and the grounding plate 10 are spaced apart along the thickness direction of the electronic device 100, an electric field whose direction is parallel to the thickness direction of the electronic device 100 is generated.

[0061] Thus, as mentioned above, when the electronic device 100 is in the head-hand state, that is, when the user holds the electronic device 100 close to the head, since the electronic device 100 is generally close to the user's cheek or other positions with the display screen side, the thickness direction of the electronic device 100 is substantially perpendicular to the user's skin surface, and therefore, the direction of the vertical electric field is also substantially perpendicular to the user's skin surface. Thus, since the direction of the vertical electric field is perpendicular to the user's skin surface, it can reduce human body absorption, and it is easy to form surface waves on the human body surface for propagation, and can effectively improve the antenna radiation performance in the head-hand state.

[0062] See also Figure 7 , which is another further structural schematic diagram of a partial structure of the electronic device 100 including the annular metal part 11 in some embodiments of the present application.

[0063] like Figure 7 As shown, the electronic device also includes a metal sheet 13, and the metal sheet 13 is arranged in the space surrounded by the annular metal member 11. The metal sheet 13 includes a first end 13a and a second end 13b opposite to each other. The first end 13a of the metal sheet 13 is connected to the feeding point F1, and the feed source 12 is connected to the second end 13b of the metal sheet 13, and is electrically connected to the radiating part P1 through the metal sheet 13, and stimulates the radiating part P1 to support the reception and transmission of electromagnetic wave signals in a preset frequency band, wherein the metal sheet 13 is used to perform impedance matching adjustment on at least the first frequency band, so that the impedance matching of the first frequency band can be better, thereby improving the antenna radiation efficiency.

[0064] in, Figure 7 For Figure 2 Based on the structure shown in FIG. 1 , further structures are shown as examples. Obviously, it is also possible to Figure 3 The structure shown further includes the metal sheet 13, and can also be Figure 4 The structure shown further includes the metal sheet 13 .

[0065] In some embodiments, the equivalent electrical length of the metal sheet 13 is λ / 2, where λ is the wavelength corresponding to the preset frequency band. The metal sheet 13 also operates in a half-wavelength resonance mode under the excitation of the feed source 12, and supports the transmission and reception of electromagnetic wave signals in the preset frequency band.

[0066] That is, in some embodiments, the metal sheet 13 may also resonate in the preset frequency band, and can strengthen the radiation energy of the electromagnetic wave signal in the preset frequency band, thereby further improving the radiation performance in the preset frequency band.

[0067] By adding the metal sheet 13, the total radiation aperture can be increased, thereby improving the overall antenna radiation efficiency.

[0068] In some embodiments, the metal sheet 13 is parallel to the plane where the annular metal member 11 is located.

[0069] In some embodiments, the metal sheet 13 is parallel to the plane where the annular metal member 11 is located, which means that the surface of the metal sheet 13 is parallel to the plane where the annular metal member 11 is located. The metal sheet 13 is generally plate-shaped or sheet-shaped, the surface of the metal sheet 13 refers to the surface of the metal sheet 13 with the largest area, and the plane where the annular metal member 11 is located refers to a plane parallel to the circumferential direction of the annular metal member 11.

[0070] Therefore, the metal sheet 13 is parallel to the plane where the annular metal part 11 is located. The metal sheet 13 is equivalent to increasing the size of the annular metal part 11 in the current plane, which can increase the total radiation aperture as much as possible and improve the overall antenna radiation efficiency.

[0071] In some embodiments, the metal sheet 13 may be connected to the feeding point F1 on the inner side of the annular metal member 11. For example, the metal sheet 13 may be an integral structure with the annular metal member 11, that is, a structure that can be extended from the feeding point F1 on the inner side of the annular metal member 11 to the central area of ​​the annular metal member 11. For another example, the metal sheet 13 may also be connected to the feeding point F1 on the inner side of the annular metal member 11 by welding or the like.

[0072] In some embodiments, the annular metal member 11 is parallel to the grounding plate 10 , and a projection of the annular metal member 11 on the grounding plate 10 is located within the region of the grounding plate 10 .

[0073] Therefore, the radiation portion P1 of the annular metal member 11 can be substantially parallel to and spaced apart from the ground plate 10 , which is more conducive to forming a slot antenna and more capable of forming the vertical electric field.

[0074] When the metal sheet 13 and the annular metal member 11 are parallel to each other, the metal sheet 13 and the annular metal member 11 are substantially parallel to and spaced from the grounding plate 10 .

[0075] In this application, "A" and "B" are parallel, which does not mean that "A" and "B" are strictly parallel, but means that the angle between "A" and "B" is smaller than a preset angle, for example, smaller than 30°.

[0076] In some embodiments, both ends of the radiating portion P1 are grounded to form a slot antenna, which may specifically refer to both ends of the radiating portion P1 being grounded to form a slot antenna in cooperation with the ground GND. When the radiating portion P1 is connected to the ground plate 10 and grounded, it may refer to the radiating portion P1 and the ground plate 10 forming the slot antenna in cooperation.

[0077] In some embodiments, as mentioned above, both ends of the radiating part P1 are grounded to form a slot antenna. At this time, when the electronic device 100 also includes the metal sheet 13, the metal sheet 13 is equivalent to forming a patch antenna. At this time, the metal sheet 13 can cooperate with the radiating part P1 to form a slot (slot)-patch (patch) hybrid mode antenna, which can effectively improve the antenna radiation performance / antenna radiation efficiency of the preset frequency band.

[0078] The grounding point G1 may be disposed on a side of the annular metal member 11 facing the grounding plate 10 , so as to be directly grounded through a spring or other structure.

[0079] See also Figure 8 , is another plan view of the electronic device 100 in some embodiments of the present application. Figure 8 As shown, the electronic device 100 further includes a back cover 3 , and the annular metal member 11 in any of the aforementioned embodiments is arranged on the back cover 3 .

[0080] That is, in some embodiments, the annular metal member 11 may be a structure disposed on the back cover 3 .

[0081] In some embodiments, the back cover 3 is made of insulating material, such as glass, ceramic or plastic.

[0082] In some embodiments, the annular metal part 11 is a camera decorative ring. That is, in some embodiments, the annular metal part 11 can be specifically a camera decorative ring. Therefore, in some embodiments, the annular metal part 11 is a structure that shares the camera decorative ring, and there is no need to set a separate antenna structure, which is beneficial to saving costs and reducing the volume of the electronic device 100.

[0083] In some embodiments, the annular metal member 11 is annular and surrounds a space R1, that is, the annular metal member 11 forms a hollow space R1. Therefore, when the annular metal member 11 is a camera decorative ring, the hollow space R1 can allow light to pass through, and can be used for the camera to collect light and for light emitted by the flash to pass through.

[0084] Among them, Figure 1-Figure 4 as well as Figure 7-Figure 8 As shown in the figure, the annular metal member 11 is in the shape of a ring, that is, the annular metal member 11 is in the shape of a ring. Obviously, in some embodiments, the annular metal member 11 can be in any shape such as square, oval, D-shaped, triangle, etc.

[0085] In some embodiments, when a metal sheet 13 is provided in the annular metal part 11, functional holes or gaps may be opened in the metal sheet 13 corresponding to the positions of the camera and the flash, thereby providing a light channel for the camera to collect light and for the light emitted by the flash to pass through, without hindering the camera from shooting and the flash from providing fill light.

[0086] In some embodiments, when the annular metal part 11 is a camera decorative ring, a glass cover is provided in the space R1 surrounded by the annular metal part 11. When a metal sheet 13 is provided in the annular metal part 11, the metal sheet 13 can also be attached and fixed to the glass cover.

[0087] In some embodiments, the annular metal part 11 may also be any metal part disposed on the back cover 3. For example, it may be an annular metal part surrounding a product LOGO (logo) or a company LOGO. In some embodiments, when the annular metal part 11 is an annular metal part surrounding a product LOGO (logo) or a company LOGO, and a metal sheet 13 is further disposed in the annular metal part 11, the metal sheet 13 may be hollowed out according to the shape of the LOGO to present a pattern corresponding to the LOGO.

[0088] Obviously, in other embodiments, the annular metal member 11 may also be disposed at other positions of the electronic device 100 , for example, at the top D1 of the electronic device 100 .

[0089] In this application, the annular metal part 11 is used as a camera decorative ring and is arranged on the back cover 3 as an example for explanation. Figure 1-Figure 4 as well as Figure 7-Figure 8 The above diagrams are all viewed from the back side of the electronic device 100, that is, from the side of the back cover 3. In this application, the above, below, left, right, etc. are all viewed from the back side of the electronic device 100.

[0090] In some embodiments, Figure 8 As shown, and as mentioned above, the electronic device 100 further includes a grounding plate 10, wherein the aforementioned grounding point G1 is specifically connected to the grounding plate 10 to be grounded.

[0091] In some embodiments, Figure 8 As shown, the electronic device may further include a middle frame 5 and a main board 6, wherein the grounding plate 10 may be at least a portion of the middle frame 5 or at least a portion of the grounding layer in the main board 6. The feed source 12 and the like are disposed on the main board 6.

[0092] in, Figure 1 and Figure 8 In the figure, the ground plate 10 is taken as the middle frame 5 as an example for illustration.

[0093] When the annular metal member 11 is disposed on the rear cover 3 , the annular metal member 11 is parallel to and spaced from the ground plate 10 and the main board 6 .

[0094] In some embodiments, the feeding point F1 may also be at least partially disposed on the side of the annular metal member 11 facing the ground plate 10 and the main board 6, so as to facilitate connection with the feed source 12 disposed on the main board 6. That is, when the metal sheet 13 is also included, the feeding point F1 may be a larger area point, which may be partially located on the side of the annular metal member 11 facing the ground plate 10 and the main board 6, and partially located on the inner side, and connected to the metal sheet 13. Among them, the ground plate 10, the middle frame 5 and the main board 6 are all disposed inside the electronic device 100. When the annular metal member 11 is disposed on the back cover 3, the side of the annular metal member 11 facing the ground plate 10 and the main board 6 is the side facing the inside of the electronic device 100.

[0095] In some embodiments, the preset frequency band may be a satellite communication frequency band, for example, a Beidou satellite communication frequency band, a GPS frequency band, or the like.

[0096] Among them, in the present application, when the radiating part P1 works in the half-wavelength resonant mode under the excitation of the feed source 12, it is mainly in a linear polarization mode. However, since the electronic device 100 of the present application can effectively generate a vertical electric field along the direction from the annular metal part 11 to the ground plate 10 or from the ground plate 10 to the annular metal part 11, that is, the electric field direction is an electric field along the thickness direction of the electronic device 100, when the electronic device 100 is in a head-hand state, that is, when the user holds the electronic device 100 close to the head, since the vertical electric field is basically perpendicular to the user's skin surface, it can reduce human body absorption and easily form surface waves on the human body surface for propagation, and can effectively improve the antenna radiation performance in the head-hand state, thereby achieving or even exceeding the circularly polarized radiation performance.

[0097] Obviously, in some other embodiments, the preset frequency band may also be a low frequency band, a medium or high frequency band, a WiFi band, a 5G N77, N78, N79, and the like.

[0098] Please return to Figure 1 In some embodiments, as Figure 1 As shown, the electronic device 100 includes a top end D1, a bottom end D2, a first side end D3, and a second side end D4. In some embodiments, when the annular metal member 11 is located in the electronic device 100, the top, bottom, left, and right of the annular metal member 11 are respectively facing the top end D1, the bottom end D2, the first side end D3, and the second side end D4 of the electronic device 100.

[0099] In some embodiments, the bottom end D2 of the electronic device 100 is the end where the headphone jack and the USB port are provided, and the top end D1 of the electronic device 100 is the other end opposite to the end where the headphone jack and the USB port are provided. For example, the top end D1 of the electronic device 100 is the end where the camera is provided.

[0100] like Figure 1 As shown, the upper and slightly right position of the annular metal member 11 is the position of the annular metal member 11 facing the top end D1 of the electronic device 100 and slightly biased toward the second side end D4 when the annular metal member 11 is located in the electronic device 100, the lower and slightly right position of the annular metal member 11 is the position of the annular metal member 11 facing the bottom end D2 of the electronic device 100 and slightly biased toward the second side end D4 when the annular metal member 11 is located in the electronic device 100, and the right position of the annular metal member 11 is the position of the annular metal member 11 facing the second side end D4 of the electronic device 100 when the annular metal member 11 is located in the electronic device 100. Therefore, in terms of the position of the annular metal member 11 in the electronic device 100, in some embodiments, as Figure 1 As shown, the first target grounding point G11 is approximately located above and slightly to the right of the annular metal member 11, the second target grounding point G12 is approximately located below and slightly to the right of the annular metal member 11, and the feeding point F1 is approximately located to the right of the annular metal member 11, i.e., toward the second side end D4.

[0101] Among them, Figure 1 As shown, the radiation portion P1 of the annular metal member 11 is located at the right portion of the annular metal member 11 , that is, located at the position of the annular metal member 11 facing the second side end D4 of the electronic device 100 .

[0102] Among them, as mentioned above, Figure 1 and Figure 8 All of them may be schematic diagrams viewed from the back side of the electronic device 100 , that is, schematic diagrams viewed from the side of the back cover 3 of the electronic device 100 .

[0103] See also Fig. 9 , which is a schematic diagram of the electronic device 100 being held in a head and hand state in some embodiments of the present application.

[0104] like Fig. 9As shown, a general user is accustomed to holding the electronic device 100 in the right hand, and in the head-hand state, the electronic device 100 will tilt back at a certain angle, so that the second side end D4 faces the sky, so that the radiation part P1 of the annular metal part 11 is located on the side facing the sky, and when the preset frequency band is the satellite communication frequency band, it can point to the satellite in the air to improve the radiation performance.

[0105] Obviously, in some embodiments, the first target grounding point G11 may also be located approximately above and slightly to the left of the annular metal member 11, the second target grounding point G12 may also be located approximately above and slightly to the right of the annular metal member 11, and the feeding point F1 is located approximately above the annular metal member 11. Thus, the radiating portion P1 of the annular metal member 11 is located at the upper portion of the annular metal member 11, that is, at the position of the top D1 of the annular metal member 11 facing the electronic device 100. Thus, at this time, whether the user holds the device in the left hand or the right hand in a head-hand state, the radiating portion P1 will be at least partially located on the side of the electronic device 100 facing the sky, so that when the preset frequency band is a satellite communication frequency band, it can point to the satellite in the sky, thereby improving the radiation performance.

[0106] Among them, in Fig. 9 In the human head and hand state shown, as mentioned above, the vertical electric field generated between the radiating part P1 and the grounding plate 10 can excite the generation of surface waves, and the surface waves can propagate along the skin surface, and the surface waves and the overall beam direction A1 of the electromagnetic wave signal generated by the radiating part P1 mainly point to the sky above, which is conducive to communication with satellite connections.

[0107] in, Fig. 9 Can be Figure 7 The structure of the electronic device 100 shown is taken as an example, and a schematic diagram of holding the electronic device 100 in a human head and hand state is obtained by simulation test.

[0108] See also Fig.10 , which is a three-dimensional radiation pattern of left-hand circular polarization when the electronic device 100 in some embodiments of the present application is in a head-hand state and operates in the preset frequency band.

[0109] Among them, linear polarization can be decomposed into left-hand circular polarization and right-hand circular polarization, that is, linear polarization is a synthesis of left-hand circular polarization and right-hand circular polarization. Therefore, although the radiating part P1 works in a half-wavelength resonant mode under the excitation of the feed source 12, it is mainly in a linear polarization mode, and it can also be decomposed into left-hand circular polarization and right-hand circular polarization to meet the communication requirements of the corresponding satellite communication frequency band.

[0110] The present application takes the preset frequency band as a satellite communication frequency band, and mainly a left-hand circularly polarized satellite communication frequency band as an example for explanation. Fig.10 Can also be Figure 7 The structure of the electronic device 100 shown is used as an example to obtain a three-dimensional radiation pattern of left-hand circular polarization when the electronic device 100 is in a head-hand state and works in a preset frequency band.

[0111] Furthermore, Fig.10 It may be a three-dimensional direction diagram of left-hand circular polarization in a head-hand state held in the right hand, and may be a three-dimensional direction diagram of left-hand circular polarization viewed from the left side of the user, such as the left ear.

[0112] from Fig.10 It can be seen that the direction of the left-hand circular polarization, that is, the beam direction A2 of the left-hand circular polarization, is mainly toward the upward direction, has good coverage in the direction toward the sky, and can meet the needs of satellite communication.

[0113] See also Fig.11 , which is a two-dimensional radiation pattern of left-hand circular polarization when the electronic device 100 in some embodiments of the present application is in a head-hand state and operates in the preset frequency band.

[0114] in, Fig.11 Can also be Figure 7 The structure of the electronic device 100 shown in the figure is used as an example to perform simulation tests to obtain a two-dimensional radiation pattern of left-hand circular polarization when the electronic device 100 is in a head-hand state and works in a preset frequency band. Fig.11 The two-dimensional direction pattern can be regarded as Fig.10 The three-dimensional direction map shown is unfolded into a schematic diagram of a plane.

[0115] in, Fig.11 The horizontal coordinate is the azimuth angle phi, and the vertical coordinate is the angle Theta (θ). The angle Theta (θ) represents the angle with the positive direction of the Z axis, and its value is in the range of 0°-180°. The azimuth angle Phi in the figure represents the angle in the four quadrants divided in the XOY plane, and its value is in the range of 0°-360°. The positive direction of the Z axis is the direction in which the top D1 of the electronic device 100 is facing, and the XOY plane refers to the plane parallel to the Z axis.

[0116] Among them, when the gain is greater than -7dB, it means that the gain can meet the communication requirements. Fig.11It can be seen that in the area facing the sky above the head with an angle of theta 0°-30°, the azimuth angle phi with a gain greater than -7dB is 0°-360°, achieving 360-degree coverage. In the angle theta 30°-60°, the azimuth angle with a gain greater than -7dB covers about 240°, also achieving a wider azimuth coverage.

[0117] It can be seen that the electronic device 100 of the present application, through the above structure, can form a vertical electric field, that is, the electric field has a large vertical component, which can reduce human body absorption and form surface waves, which is conducive to forming a better communication experience in the head-hand state; and as shown in the previous directional diagram, in the head-hand posture, the beam direction is mainly upward, that is, most of it radiates upward, and has a wide range of azimuth coverage within a certain theta angle, which can greatly meet the demand for satellites and improve the communication performance of satellite communication frequency bands.

[0118] See also Fig.12 , which is a structural block diagram of the electronic device 100 in some embodiments of the present application.

[0119] like Fig.12 As shown, the electronic device 100 includes an antenna assembly 200 .

[0120] The antenna assembly 200 may include the aforementioned annular metal member 11 and feed source 12 and other structures.

[0121] For example, the antenna assembly 200 may include the aforementioned annular metal member 11 and feed source 12, and the annular metal member 11 includes a feed point F1 and at least two grounding points G1, the at least two grounding points G1 are used for grounding, and the at least two grounding points G1 include a first target grounding point G11 and a second target grounding point G12 located on both sides of the feed point F1 and closest to the feed point F1; wherein the annular metal member 11 includes a radiating portion P1 located between the first target grounding point G11 and the second target grounding point G11 and including the feed point F1, and both ends of the radiating portion P1 are grounded through the first target grounding point G11 and the second target grounding point G12 respectively to form a slot antenna. The feed source 12 is electrically connected to the feed point F1, and is used to excite the radiating portion 11 to support the transmission and reception of electromagnetic wave signals in a preset frequency band.

[0122] Among them, the equivalent electrical length of the radiating part P1 is λ / 2, wherein λ is the wavelength corresponding to the preset frequency band. The radiating part P1 operates in a half-wavelength resonance mode under the excitation of the feed source 12 and supports the transmission and reception of electromagnetic wave signals in the preset frequency band.

[0123] The annular metal member 11 further includes a non-radiating portion P2 located between the first target grounding point G11 and the second target grounding point G12 and excluding the feeding point F1, and the at least two grounding points G1 further include at least one third target grounding point G13, and the at least one third target grounding point G13 is located in the non-radiating portion of the annular metal member 11. In some embodiments, the number of the at least one third target grounding point G13 is one or more, and is spaced apart from the first target grounding point G11 and the second target grounding point G12. In some embodiments, the third target grounding point G13 is set in all areas of the non-radiating portion P2, and the non-radiating portion P2 is grounded.

[0124] For example, the feeding point F1 is set at the midpoint of the equivalent electrical length of the radiating part P1, and the equivalent electrical length of the first metal segment 111 between the feeding point F1 and the first target grounding point G11 is equal to the equivalent electrical length of the second metal segment 112 between the feeding point F1 and the second target grounding point G12.

[0125] In some embodiments, the equivalent electrical length of the radiating portion 11, the equivalent electrical length of the first metal segment 111, and the equivalent electrical length of the second metal segment 112 may be their own equivalent electrical lengths, that is, the equivalent electrical length of the radiating portion 11 may be equal to the physical length of the radiating portion 11, and the equivalent electrical lengths of the first metal segment 111 and the second metal segment 112 may also be equal to the physical lengths of the first metal segment 111 and the second metal segment 112, respectively. In some embodiments, the equivalent electrical length of the radiating portion 11, the equivalent electrical length of the first metal segment 111, and the equivalent electrical length of the second metal segment 112 may also be the equivalent electrical lengths under matching of the corresponding matching units.

[0126] In some embodiments, the antenna assembly 200 also includes at least one matching unit M1, and at least one of the first target grounding point G11 and the second target grounding point G12 is grounded through the matching unit M1; when the first target grounding point is grounded through the matching unit, the equivalent electrical length of the first metal segment is the equivalent electrical length with the cooperation of the matching unit, and when the second target grounding point is grounded through the matching unit, the equivalent electrical length of the second metal segment is the equivalent electrical length with the cooperation of the matching unit.

[0127] In some embodiments, the antenna assembly 200 also includes a metal sheet 13, which is arranged in the space surrounded by the annular metal part 11, and the metal sheet 13 includes a first end 13a and a second end 13b relative to each other, and the first end 13a of the metal sheet 13 is connected to the feeding point F1; the feed source 12 is connected to the second end 13b of the metal sheet 13, and is electrically connected to the feeding point F1 through the metal sheet 13, and excites the radiating part P1 to support the reception and transmission of electromagnetic wave signals in a preset frequency band, wherein the metal sheet 13 is used to perform impedance matching adjustment on at least the first frequency band.

[0128] In some embodiments, the equivalent electrical length of the metal sheet 13 is λ / 2, where λ is the wavelength corresponding to the preset frequency band. The metal sheet 13 also operates in a half-wavelength resonance mode under the excitation of the feed source 12, and supports the transmission and reception of electromagnetic wave signals in the preset frequency band.

[0129] In some embodiments, the preset frequency band is a satellite communication frequency band.

[0130] Among them, the more specific structure of the antenna assembly 200 and the more specific content of each structure can be referred to the relevant introduction of the aforementioned electronic device 100, which will not be repeated here.

[0131] in, Fig.12 Only a partial structure of the electronic device 100 is illustrated, that is, only the antenna assembly 200 is illustrated. Obviously, the electronic device 100 may also include other structures, such as the aforementioned middle frame 5, main board 6, and may also include other structures such as memory, processor, display screen, etc., which will not be repeated here.

[0132] The electronic device 100 of the present application may be any electronic device with an antenna, such as a mobile phone or a tablet computer.

[0133] The antenna assembly 200 and the electronic device 100 of the present application are arranged such that the annular metal part 11 and the grounding plate 10 are spaced apart along the thickness direction of the electronic device 100, and the annular metal part 11 is closer to the back side of the electronic device 100 relative to the grounding plate 10, and the annular metal part 11 includes a radiating part P1 located between the first target grounding point G11 and the second target grounding point G12 and including the feeding point F1, and both ends of the radiating part P1 are grounded to the grounding plate 10 to form a slot antenna, so that when the radiating part P1 supports the reception and transmission of electromagnetic wave signals of a preset frequency band under the excitation of the feed source 12, it can effectively generate a vertical electric field along the direction from the annular metal part 11 to the grounding plate 10 or from the grounding plate 10 to the annular metal part 11, that is, the electric field direction is an electric field along the thickness direction of the electronic device 100. Thus, when the electronic device 100 is in a head-hand state, that is, when the user holds the electronic device 100 close to the head, since the vertical electric field is basically perpendicular to the user's skin surface, it can reduce human body absorption and easily form surface waves on the human body surface for propagation, thereby effectively improving the antenna radiation performance in the head-hand state.

[0134] In addition, in the present application, since the annular metal part 11 is closer to the back side of the electronic device 100 than the ground plate 10, and in the head-hand state, the user mainly holds the display screen side of the electronic device 100 close to the head, therefore, the back side of the electronic device 100 is facing the surrounding environment, so that the electromagnetic wave signal radiated by the annular metal part 11 is not blocked, and in the use scenario where the electronic device 100 is close to the user's head to make a call, the interference of the human body can be effectively reduced, and the communication quality, such as the satellite communication quality, can be improved.

[0135] Among them, each embodiment of the present application may have its own focus, and for content that is not described in detail in some embodiments, please refer to the relevant content of other embodiments.

[0136] The above description is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application; in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An electronic device, characterized in that: include: A grounding plate for providing ground potential; An annular metal part, wherein the annular metal part and the ground plate are spaced apart along the thickness direction of the electronic device, and the annular metal part is closer to the back side of the electronic device relative to the ground plate; wherein the annular metal part includes a feeding point and at least two grounding points, the at least two grounding points are used to connect to the ground plate for grounding, and the at least two grounding points include a first target grounding point and a second target grounding point located on both sides of the feeding point and closest to the feeding point; wherein the annular metal part includes a radiating part located between the first target grounding point and the second target grounding point and including the feeding point, and both ends of the radiating part are grounded through the first target grounding point and the second target grounding point respectively to form a slot antenna; and A feed source is electrically connected to the feeding point and is used to stimulate the radiation part to support the transmission and reception of electromagnetic wave signals in a preset frequency band.

2. The electronic device according to claim 1, characterized in that: The equivalent electrical length of the radiating part is λ / 2, wherein λ is the wavelength corresponding to the preset frequency band. The radiating part operates in a half-wavelength resonance mode under the excitation of the feed source, and supports the transmission and reception of electromagnetic wave signals in the preset frequency band.

3. The electronic device according to claim 1, characterized in that: The annular metal part also includes a non-radiating portion located between the first target grounding point and the second target grounding point and not including the feeding point, and the at least two grounding points also include at least one third target grounding point, and the at least one third target grounding point is located in the non-radiating portion of the annular metal part.

4. The electronic device according to claim 3, characterized in that: The at least one third target grounding point is one or more in number and is spaced apart from the first target grounding point and the second target grounding point.

5. The electronic device according to claim 3, characterized in that: The third target grounding point is set in all areas of the non-radiating part, and the non-radiating part is grounded.

6. The electronic device according to claim 1, characterized in that: The feeding point is arranged at the midpoint of the equivalent electrical length of the radiating part, and the equivalent electrical length of the first metal segment between the feeding point and the first target grounding point is equal to the equivalent electrical length of the second metal segment between the feeding point and the second target grounding point.

7. The electronic device according to claim 6, characterized in that: The electronic device also includes at least one matching unit, and at least one of the first target grounding point and the second target grounding point is grounded through the matching unit; when the first target grounding point is grounded through the matching unit, the equivalent electrical length of the first metal segment is the equivalent electrical length under the cooperation of the matching unit, and when the second target grounding point is grounded through the matching unit, the equivalent electrical length of the second metal segment is the equivalent electrical length under the cooperation of the matching unit.

8. The electronic device according to any one of claims 1 to 7, characterized in that: The electronic device also includes a metal sheet, which is arranged in the space surrounded by the annular metal part, and the metal sheet includes a first end and a second end opposite to each other, and the first end of the metal sheet is connected to the feeding point; the feed source is connected to the second end of the metal sheet, and is electrically connected to the feeding point through the metal sheet, and stimulates the radiating part to support the transmission and reception of electromagnetic wave signals in a preset frequency band, wherein the metal sheet is used to perform impedance matching adjustment on at least the first frequency band.

9. The electronic device according to claim 8, characterized in that: The equivalent electrical length of the metal sheet is λ / 2, wherein λ is the wavelength corresponding to the preset frequency band. The metal sheet also operates in a half-wavelength resonance mode under the excitation of the feed source, and supports the transmission and reception of electromagnetic wave signals in the preset frequency band.

10. The electronic device according to claim 8, characterized in that: The metal sheet is parallel to the plane where the annular metal piece is located.

11. The electronic device according to claim 1, characterized in that: The annular metal member is parallel to the grounding plate, and a projection of the annular metal member on the grounding plate is located within the area of ​​the grounding plate.

12. The electronic device according to claim 1, characterized in that: The electronic device further comprises a back cover, and the annular metal piece is arranged on the back cover.

13. The electronic device according to claim 12, characterized in that: The annular metal part is a camera decorative ring.

14. The electronic device according to claim 1, characterized in that: The electronic device further includes a middle frame and a main board, wherein the grounding plate is at least a partial area of ​​the middle frame or at least a partial area of ​​a grounding layer in the main board.

15. The electronic device according to claim 1, characterized in that: The preset frequency band is a satellite communication frequency band.

16. An antenna assembly, characterized in that: The antenna assembly comprises: An annular metal member, comprising a feeding point and at least two grounding points, wherein the at least two grounding points are used for grounding, and the at least two grounding points include a first target grounding point and a second target grounding point located on both sides of the feeding point and closest to the feeding point; wherein the annular metal member includes a radiating portion located between the first target grounding point and the second target grounding point and including the feeding point, and both ends of the radiating portion are grounded through the first target grounding point and the second target grounding point respectively to form a slot antenna; and A feed source is electrically connected to the feeding point and is used to stimulate the radiation part to support the transmission and reception of electromagnetic wave signals in a preset frequency band.

17. The antenna assembly according to claim 16, characterized in that: The equivalent electrical length of the radiating part is λ / 2, wherein λ is the wavelength corresponding to the preset frequency band. The radiating part operates in a half-wavelength resonance mode under the excitation of the feed source, and supports the transmission and reception of electromagnetic wave signals in the preset frequency band.

18. The antenna assembly according to claim 16, wherein: The annular metal part also includes a non-radiating portion located between the first target grounding point and the second target grounding point and not including the feeding point, and the at least two grounding points also include at least one third target grounding point, and the at least one third target grounding point is located in the non-radiating portion of the annular metal part.

19. The antenna assembly according to claim 16, characterized in that The feeding point is arranged at the midpoint of the equivalent electrical length of the radiating part, and the equivalent electrical length of the first metal segment between the feeding point and the first target grounding point is equal to the equivalent electrical length of the second metal segment between the feeding point and the second target grounding point.

20. The antenna assembly according to claim 19, wherein: The antenna assembly also includes at least one matching unit, and at least one of the first target grounding point and the second target grounding point is grounded through the matching unit; when the first target grounding point is grounded through the matching unit, the equivalent electrical length of the first metal segment is the equivalent electrical length with the cooperation of the matching unit, and when the second target grounding point is grounded through the matching unit, the equivalent electrical length of the second metal segment is the equivalent electrical length with the cooperation of the matching unit.

21. The antenna assembly according to any one of claims 16 to 20, characterized in that: The antenna assembly also includes a metal sheet, which is arranged in the space surrounded by the annular metal part, and the metal sheet includes a first end and a second end opposite to each other, and the first end of the metal sheet is connected to the feeding point; the feed source is connected to the second end of the metal sheet, and is electrically connected to the feeding point through the metal sheet, and excites the radiating part to support the transmission and reception of electromagnetic wave signals in a preset frequency band, wherein the metal sheet is used to perform impedance matching adjustment on at least the first frequency band.

22. The antenna assembly according to claim 21, characterized in that The equivalent electrical length of the metal sheet is λ / 2, wherein λ is the wavelength corresponding to the preset frequency band. The metal sheet also operates in a half-wavelength resonance mode under the excitation of the feed source, and supports the transmission and reception of electromagnetic wave signals in the preset frequency band.

23. The antenna assembly according to claim 16, wherein: The preset frequency band is a satellite communication frequency band.

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