Antenna assembly and electronic device

Abstract

The application provides an antenna assembly, which comprises a conductive plate, a ground plate, a conductive wall, a feed source and a matching unit. The conductive plate comprises a first edge, a second edge and a first connecting edge connected between the first and second edges. The ground plate is parallel to and spaced from the conductive plate, and comprises a third edge, a fourth edge and a second connecting edge connected between the third and fourth edges. The ground plate is grounded. The conductive wall is connected between the first and second connecting edges and used for connecting the first connecting edge to the ground. The conductive plate, the ground plate and the conductive wall form a cavity antenna with two open sides. The first and third edges are two opposite edges of one of the open sides, and the second and fourth edges are two opposite edges of the other open side. The cavity antenna supports the reception of electromagnetic wave signals of two frequency bands under the excitation of the feed source and the impedance matching adjustment of the matching unit. The application also provides an electronic device. The application can ensure the antenna performance in an effective clearance area.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an antenna assembly and an electronic device having said antenna assembly. Background Technology

[0002] Currently, with the widespread adoption of 5G communication technology, people's communication experience is improving, but the number of antennas is also increasing. As people pursue high screen-to-body ratios, full-screen electronic devices have become mainstream. Due to their superior feel and heat dissipation, metal back covers have gradually become the mainstream choice for many electronic devices. In this situation, the clearance area left for antennas in current electronic devices is decreasing, leading to a decline in antenna performance or encroaching on the space of other functional components, thus affecting their functionality. Summary of the Invention

[0003] This application provides an antenna assembly and an electronic device to solve the above-mentioned problems.

[0004] In a first aspect, an antenna assembly is provided, comprising a conductive plate, a ground plane, a conductive wall, a feed, and a matching unit. The conductive plate includes a first side, a second side, and at least one first connecting side connected between the first and second sides, wherein the first side is connected to the second side. The ground plane is parallel to and spaced apart from the conductive plate, and includes a third side, a fourth side, and at least one second connecting side connected between the third and fourth sides, wherein the third side is connected to the fourth side, and the ground plane is grounded. The conductive wall is connected between the at least one first connecting side and the at least one second connecting side, and is used to connect the at least one first connecting side of the conductive plate to ground. The matching unit is coupled between the conductive plate, the ground plane, and the feed, and is used to achieve impedance matching adjustment. Wherein, the first side and the third side are opposite to each other and spaced apart, the second side and the fourth side are opposite to each other and spaced apart, the conductive plate, the ground plane and the conductive wall form a cavity antenna with two open sides, the first side and the third side are two opposite sides of one of the open sides, and the second side and the fourth side are two opposite sides of the other open side; the cavity antenna is used to support the reception of electromagnetic wave signals in at least two frequency bands under the excitation of the feed source and under the impedance matching adjustment of the matching unit.

[0005] Secondly, an electronic device is also provided, comprising an antenna assembly including a conductive plate, a ground plane, a conductive wall, a feed source, and a matching unit. The conductive plate includes a first side, a second side, and at least one first connecting side connected between the first and second sides, wherein the first side is connected to the second side. The ground plane is parallel to and spaced apart from the conductive plate, and includes a third side, a fourth side, and at least one second connecting side connected between the third and fourth sides, wherein the third side is connected to the fourth side, and the ground plane is grounded. The conductive wall is connected between the at least one first connecting side and the at least one second connecting side, and is used to connect the at least one first connecting side of the conductive plate to ground. The matching unit is coupled between the conductive plate, the ground plane, and the feed source for impedance matching adjustment. Wherein, the first side and the third side are opposite to each other and spaced apart, the second side and the fourth side are opposite to each other and spaced apart, the conductive plate, the ground plane and the conductive wall form a cavity antenna with two open sides, the first side and the third side are two opposite sides of one of the open sides, and the second side and the fourth side are two opposite sides of the other open side; the cavity antenna is used to support the reception of electromagnetic wave signals in at least two frequency bands under the excitation of the feed source and under the impedance matching adjustment of the matching unit.

[0006] The antenna assembly and electronic device of this application, by forming a cavity antenna, can radiate through the side of the opening. Good antenna radiation performance is achieved with only a certain clearance near the side of the opening, thus requiring very little clearance and enabling application in environments with limited clearance. Furthermore, in this application, impedance matching adjustment is achieved through a matching unit coupled between the conductive plate, the ground plane, and the feed source. This allows the cavity antenna to support the reception of electromagnetic wave signals in at least two frequency bands, meeting current multi-band requirements and effectively improving overall communication performance. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0008] Figure 1 This is a simplified structural diagram of the antenna assembly in some embodiments of this application.

[0009] Figure 2 This is a schematic diagram of the electric field distribution of a reference antenna assembly.

[0010] Figure 3 This is a schematic diagram of the electric field distribution of the antenna assembly in some embodiments of this application.

[0011] Figure 4 This is another simplified structural diagram of the antenna assembly in some embodiments of this application.

[0012] Figure 5 This is yet another simplified structural schematic diagram of the antenna assembly in some embodiments of this application.

[0013] Figure 6 This is another simplified structural schematic diagram of the antenna assembly in some embodiments of this application.

[0014] Figure 7 This is a schematic diagram of the structure of the matching unit in some embodiments of this application.

[0015] Figure 8 This is a further structural schematic diagram of the matching unit in some embodiments of this application.

[0016] Figure 9 This is a schematic diagram of the current distribution of the antenna assembly operating in the first frequency band in some embodiments of this application.

[0017] Figure 10 This is a schematic diagram of the current distribution of the antenna assembly operating in the second frequency band in some embodiments of this application.

[0018] Figure 11 This is a schematic diagram of other simplified structures of the antenna assembly in some embodiments of this application.

[0019] Figure 12 This is yet another simple structural diagram of the antenna assembly in some embodiments of this application.

[0020] Figure 13 This is a simplified structural diagram illustrating a portion of the internal structure of an electronic device in some embodiments of this application.

[0021] Figure 14 This is a schematic diagram of the return loss of the antenna assembly included in some embodiments of the electronic device described in this application.

[0022] Figure 15 This is a schematic diagram showing the radiation efficiency of the antenna components and the overall system efficiency curves of the electronic device described in some embodiments of this application.

[0023] Figure 16 This is an antenna pattern of an electronic device in some embodiments of this application when the antenna assembly operates in a first frequency band.

[0024] Figure 17 This is an antenna pattern of an electronic device in some embodiments of this application when the antenna assembly operates in the second frequency band.

[0025] Figure 18This is a schematic diagram showing a portion of the internal structure of an electronic device in some embodiments of this application, viewed from the display screen side.

[0026] Figure 19 This is a schematic side view of a portion of the structure of an electronic device in some embodiments of this application.

[0027] Figure 20 This is another side view schematic diagram illustrating a portion of the structure of an electronic device in some embodiments of this application.

[0028] Figure 21 This is a simplified structural diagram illustrating another portion of the internal structure of an electronic device in some embodiments of this application.

[0029] Figure 22 This is a simplified structural diagram illustrating a portion of the internal structure of an electronic device in some embodiments of this application.

[0030] Figure 23 This is a simplified structural diagram illustrating a portion of the internal structure in some embodiments of this application.

[0031] Figure 24 This is a simplified overall schematic diagram of an electronic device in some embodiments of this application.

[0032] Figure 25 This is a simplified planar schematic diagram of an electronic device in some embodiments of this application. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of the embodiments of this invention, it should be understood that the terms "upper," "lower," "thickness," "width," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not imply or indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the 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 this invention, the terms "first," "second," "third," "fourth," 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," "third," "fourth," etc., may be the same object. In this application, "A / B" refers to A or B. In this application, the term "coupled" includes the meanings of direct connection and indirect connection.

[0035] Please refer to the following: Figure 1 This is a simplified structural diagram of antenna assembly 1 in some embodiments of this application. Figure 1As shown, the antenna assembly 1 includes a conductive plate 11, a ground plane 12, a conductive wall 13, a feed 14, and a matching unit 15. The conductive plate 11 includes a first side B11, a second side B12, and at least one first connecting side B13 connected between the first side B11 and the second side B12, wherein the first side B11 is connected to the second side B12. The ground plane 12 is parallel to and spaced apart from the conductive plate 11. The ground plane 12 includes a third side B21, a fourth side B22, and at least one second connecting side B23 connected between the third side B21 and the fourth side B22, wherein the third side B21 is connected to the fourth side B22, and the ground plane 12 is grounded. The conductive wall 13 is connected between the at least one first connecting side B13 and the at least one second connecting side B23, and is used to connect at least one first connecting side B13 of the conductive plate 11 to ground. The matching unit 15 is coupled between the conductive plate 11, the ground plane 12, and the feed 14 to achieve impedance matching adjustment. The first side B11 and the third side B21 are opposite to each other and spaced apart, and the second side B12 and the fourth side B22 are opposite to each other and spaced apart. The conductive plate 11, the ground plane 12, and the conductive wall 13 form a cavity antenna T1 with two open sides S1 and S2. The first side B11 and the third side B21 are two opposite sides of one of the open sides S1, and the second side B12 and the fourth side B22 are two opposite sides of the other open side S2. The cavity antenna T1 is used to support the reception of electromagnetic wave signals in at least two frequency bands under the excitation of the feed 14 and the impedance matching adjustment of the matching unit 15.

[0036] In this application, by forming a cavity antenna T1, radiation can be emitted through the side of the opening. Good antenna radiation performance is achieved with only a certain clearance near the side of the opening, thus requiring very little clearance and enabling application in environments with limited clearance. Furthermore, in this application, impedance matching adjustment is achieved through a matching unit 15 coupled between the conductive plate 11, the ground plane 12, and the feed source 14. This allows the cavity antenna T1 to support the reception of electromagnetic wave signals in at least two frequency bands, meeting current multi-band requirements and effectively improving overall communication performance.

[0037] In this application, the first side B11 is connected to the second side B12, and at least one first connecting side B13 is connected between the first side B11 and the second side B12, thereby forming the complete outer periphery of the conductive plate 11. The third side B21 is connected to the fourth side B22, and at least one second connecting side B23 is connected between the third side B21 and the fourth side B22, thereby forming the complete outer periphery of the grounding plate 12. The conductive wall 13 connects the at least one first connecting edge B13 and the at least one second connecting edge B23, connecting at least one first connecting edge B13 of the conductive plate 11 to the ground. The first edge B11 is spaced apart from the third edge B21, and the second edge B12 is spaced apart from the fourth edge B22. Thus, the first edge B11 and the third edge B21 form two opposite edges of one of the open side surfaces S1, and the second edge B12 and the fourth edge B22 form two opposite edges of the other open side surface S2. The other sides of the cavity antenna T1 are closed by the conductive wall 13. Thus, the conductive plate 11, the ground plane 12, and the conductive wall 13 form a cavity antenna T1 with two open side surfaces S1 and S2.

[0038] Wherein, the length of the first side B11 and the second side B12 is the length direction of the first side B11 and the second side B12, that is, the dimension along the corresponding direction of the outer periphery of the conductive plate 11.

[0039] Among them, such as Figure 1 As shown, the first side B11 includes a first end D1 and a second end D2, and the second side B12 includes a third end D3 and a fourth end D4, with the first end D1 of the first side B11 and the third end D3 of the second side B12 connected. At least one first connecting edge B13 connects the second end D2 of the first side B11 and the fourth end D4 of the second side B12. The third side B21 includes a fifth end D5 and a sixth end D6, and the fourth side B22 includes a seventh end D7 and an eighth end D8, with the fifth end D5 of the third side B21 and the seventh end D7 of the fourth side B22 connected. At least one second connecting edge B23 connects the sixth end D6 of the third side B21 and the eighth end D8 of the fourth side B22.

[0040] Therefore, in this application, the corresponding terminals of the first side B11 and the second side B12 are connected together, and the at least one first connecting side B13 is connected between the other corresponding terminals of the first side B11 and the second side B12, thus forming the complete outer periphery of the conductive plate 11. The two corresponding terminals of the third side B21 and the fourth side B22 are connected together, and the at least one second connecting side B23 is connected between the other two corresponding terminals of the third side B21 and the fourth side B22, thus forming the complete outer periphery of the grounding plate 12.

[0041] In some embodiments, such as Figure 1 As shown, the projections of the first side B11, the second side B12, and at least one first connecting side B13 of the conductive plate 11 onto the ground plane 12 coincide with the third side B21, the fourth side B22, and at least one second connecting side B23, respectively.

[0042] That is, in some embodiments, the projection of the first side B11 of the conductive plate 11 onto the ground plane 12 coincides with the third side B21; the projection of the second side B12 of the conductive plate 11 onto the ground plane 12 coincides with the fourth side B22; and the projection of at least one first connecting side B13 of the conductive plate 11 onto the ground plane 12 coincides with at least one second connecting side B23. Thus, the projection of the conductive plate 11 onto the ground plane 12 coincides with the ground plane 12, forming a better cavity antenna T1.

[0043] Obviously, the overlap of A and B in this application is not a strict overlap, but rather an approximate overlap, with some deviation allowed. If A and B are parallel and the distance between them is less than a preset distance, such as 5 mm, or if A and B intersect and the angle between them is less than a preset angle, such as 20°, they can also be considered as overlapping.

[0044] In some embodiments, the first side B11 and the second side B12 are both straight lines and perpendicularly connected, the third side B21 and the fourth side B22 are both straight lines and perpendicularly connected; the number of the at least one first connecting side B13 is at least one, and each first connecting side is straight, arc-shaped or irregular in shape; the number of the at least one second connecting side B23 is at least one, and each second connecting side B23 is straight, arc-shaped or irregular in shape.

[0045] That is, in some embodiments, the first side B11 and the second side B12 are both straight lines and vertically connected, the third side B21 and the fourth side B22 are both straight lines and vertically connected, and the number and shape of at least one first connecting side B13 and at least one second connecting side B23 can be set as needed.

[0046] In this application, the perpendicular connection between A and B does not refer to a strict perpendicularity, but rather to a roughly perpendicular one. For example, the angle between A and B can be between 80° and 100°, etc., all of which can be considered perpendicular.

[0047] In this application, the shapes of the first edge B11, the second edge B12, and at least one first connecting edge B13 can be the shapes of the projections of the first edge B11, the second edge B12, and at least one first connecting edge B13 along the thickness direction of the conductive plate 11. Specifically, the shapes of the third edge B21, the fourth edge B22, and at least one second connecting edge B23 can be the shapes of the projections of the third edge B21, the fourth edge B22, and at least one second connecting edge B23 along the thickness direction of the ground plane 12. In some embodiments, since the conductive plate 11 and the ground plane 12 are plate-shaped, and their thickness is negligible relative to the projected area of ​​the conductive plate 11 and the ground plane 12 along their respective thickness directions, the first edge B11, the second edge B12, and at least one first connecting edge B13 are the outer peripheral edges of the conductive plate 11, i.e., the outline edges, and the third edge B21, the fourth edge B22, and at least one second connecting edge B23 are the outer peripheral edges of the ground plane 12, i.e., the outline edges.

[0048] In some embodiments, such as Figure 1 As shown, the at least one first connecting edge B13 includes two first connecting edges B13, which are straight lines and are connected sequentially between the second end D2 of the first edge B11 and the fourth end D4 of the second edge B12; the at least one second connecting edge B23 includes two second connecting edges B23, which are straight lines and are connected sequentially between the sixth end D6 of the third edge B21 and the eighth end D8 of the fourth edge B22.

[0049] That is, in some embodiments, the at least one first connecting edge B13 and the at least two second connecting edges B23 may each be two, and both may be straight lines.

[0050] In some embodiments, such as Figure 1As shown, the two first connecting edges B13 are parallel to the first edge B11 and the second edge B12, respectively, and the two second connecting edges B23 are parallel to the third edge B21 and the fourth edge B22, respectively. Therefore, since the first edge B11 and the second edge B12 are both straight lines and connected approximately perpendicularly, and the third edge B21 and the fourth edge B22 are both straight lines and connected approximately perpendicularly, and the lengths of the first edge B11 and the second edge B12 are approximately equal (λ / 4), the two first connecting edges B13 are also connected approximately perpendicularly and have equal lengths equal to λ / 4. In this case, the cavity antenna T1 is formed as a cavity antenna with a square projection along the direction from the conductive plate 11 to the ground plane 12. Compared to a conventional rectangular cavity antenna, this effectively reduces the volume, almost to half that of a conventional rectangular cavity antenna, thus reducing the volume by half.

[0051] Obviously, in other embodiments, the two first connecting edges B13 may not be parallel to the first edge B11 and the second edge B12 respectively, and the two second connecting edges B23 may not be parallel to the third edge B21 and the fourth edge B22 respectively, as long as the projection of at least one first connecting edge B13 of the conductive plate 11 on the ground plane 12 is approximately coincident with the at least one second connecting edge B23.

[0052] In this application, since the conductive wall 13 is connected between the at least one first connecting edge B13 and the at least one second connecting edge B23, the shape of the projection of the conductive wall 13 onto the conductive plate 11 or onto the ground plane 12 is the same as the shape of the at least one first connecting edge B13 or the at least one second connecting edge B23. Therefore, when both the at least one first connecting edge B13 and the at least two second connecting edges B23 are two in number and both are straight, the conductive wall 13 accordingly includes two intersecting planes.

[0053] Please see Figure 2 This is a schematic diagram of the electric field distribution of a reference antenna assembly 1'. The reference antenna assembly 1' is used to support the reception of electromagnetic wave signals in at least one frequency band. Figure 2 As shown, the reference antenna assembly 1' includes an open side surface S1', as... Figure 2As shown, since there is only one open side surface S1', the point of maximum open-circuit electric field is located at the center of this open side surface S1'. The theoretical dimension between this point and the surrounding grounded conductive wall / short-circuit wall 13' needs to be λ' / 4 to meet the minimum length boundary condition requirement for electromagnetic oscillation. Therefore, the length of the open side surface S1' of the reference antenna assembly 1' needs to be 2*λ' / 4 = λ' / 2 to meet the minimum length boundary condition requirement for electromagnetic oscillation. Here, λ' is the wavelength corresponding to a certain frequency band supported by the reference antenna assembly 1'.

[0054] Among them, such as Figure 2 As shown, the voltage at the middle position of the conductive plate 11' of the reference antenna assembly 1' at the opening side S1' is the maximum, Vmax, while the ground plane 12' is grounded and has a voltage of 0, which is equivalent to the minimum voltage point Vmin. Therefore, the voltage difference between the conductive plate 11' and the ground plane 12' at the middle position of the opening side S1' is Vmax-Vmin. Since Vmin is 0, the voltage difference is Vmax. These are the two relative positions with the maximum voltage difference between the conductive plate 11' and the ground plane 12', which are the points with the maximum electric field.

[0055] Please see Figure 3 This is a schematic diagram of the electric field distribution of antenna assembly 1 in some embodiments of this application. Wherein, Figure 3 For Figure 1 The electric field distribution is illustrated using antenna component 1 as an example.

[0056] In some embodiments, the antenna assembly 1 of this application supports at least two frequency bands, including a first frequency band and a second frequency band. The first frequency band is lower than the second frequency band, and the lengths of the first side B11 and the second side B12 are both equal to λ1 / 4, where λ1 is the wavelength corresponding to the electromagnetic wave signal of the first frequency band. That is, in some embodiments, the dimensions of the first side B11 and the second side B12 of the conductive plate 11 formed by the antenna assembly 1 of this application preferentially meet the fundamental mode resonance requirements of the lower frequency first frequency band. Then, through the impedance matching adjustment of the matching unit 15, the impedance matching of the second frequency band is better, resulting in higher radiation efficiency of the second frequency band. Thus, it can at least simultaneously support the reception of electromagnetic wave signals of the first frequency band and the reception of electromagnetic wave signals of the higher frequency second frequency band. Figure 3 The diagram mainly illustrates the electric field distribution of the antenna assembly 1 when it operates in the first frequency band, and the matching unit 15 and other components are omitted.

[0057] In this application, "the first frequency band is lower than the second frequency band" can mean that the center frequency of the first frequency band is lower than the center frequency of the second frequency band, and the frequency ranges corresponding to the first and second frequency bands may partially overlap or not overlap. For example, "the first frequency band is lower than the second frequency band" may include: the maximum value of the frequency range corresponding to the first frequency band is less than the maximum value of the frequency range corresponding to the second frequency band, and the minimum value of the frequency range corresponding to the first frequency band is less than the minimum value of the frequency range corresponding to the second frequency band; or, the maximum value of the frequency range corresponding to the first frequency band is less than the minimum value of the frequency range corresponding to the second frequency band, and so on.

[0058] like Figure 3 As shown, the antenna assembly 1 of this application has two open sides S1 and S2. The point of maximum electric field is the intersection point N1 of the first side B11 and the second side B12, that is, at the first end D1 of the first side B11 and the third end D3 of the second side B12. The lengths of the first side B11 and the second side B12 are both equal to λ / λ1. Therefore, the distance between the point of maximum electric field of the cavity antenna T1 and the grounded conductive wall 13 still satisfies λ1 / 4, satisfying the boundary condition of the minimum size required for electromagnetic oscillation. At the same time, the length of the side located on the open side only needs to be λ1 / 4, which can effectively reduce the overall size. For example, if using Figure 2 To support the first frequency band, the reference antenna assembly 1' shown requires a side length of λ1 / 2 on the side of the opening. Therefore, the antenna assembly 1 of this application, compared to the reference antenna assembly 1', can reduce its volume by approximately half, effectively reducing its space occupation. For clarity, [further details are provided]. Figure 3 The labels of some components have been omitted.

[0059] Among them, such as Figure 3 As shown, the voltage is greatest at point N1, the intersection of the first side B11 and the second side B12 of the conductive plate 11, i.e. Figure 3 As shown in the diagram, Vmax is the voltage at each location of the grounding plate 12. The intersection point N2 of the third side B21 and the fourth side B22 of the grounding plate 12 corresponds to the intersection point N1. Since the grounding plate 12 is grounded, the voltage at each location of the grounding plate 12 is 0, which is equivalent to the minimum voltage Vmin. Therefore, the voltage difference between the intersection point N1 of the first side B11 and the second side B12 of the conductive plate 11 and the intersection point N2 of the third side B21 and the fourth side B22 of the grounding plate 12 is Vmax - Vmin. Since Vmin is 0, the voltage difference is Vmax. These are the two relative locations between the conductive plate 11 and the grounding plate 12 with the maximum voltage difference, which are the points with the maximum electric field.

[0060] Therefore, as mentioned above, conventional cavity antennas in the prior art are typically open on one side, meaning they have only one open side. The point of maximum electric field is located at the midpoint of the long side of the open side. In order to satisfy the boundary condition of minimum electromagnetic oscillation, the long side of the open side needs to be half the wavelength λ' corresponding to the supported frequency band, so that the distance between the point of maximum electric field and the grounded conductive walls on both sides is λ' / 4. Therefore, the length of the long side of the cavity antenna T1 in the prior art, that is, the long side located on the open side, needs to be at least λ' / 2. However, the cavity antenna T1 of this application has two open sides S1 and S2. The point of maximum electric field is the intersection of the first side B11 and the second side B12. The lengths of the first side B11 and the second side B12 are both equal to 1 / 4 of the wavelength corresponding to the supported frequency band, such as the aforementioned λ1 / 4. Therefore, the distance between the point of maximum electric field of the cavity antenna T1 and the grounded conductive wall 13 still satisfies λ1 / 4, which meets the boundary condition of the minimum size required for electromagnetic oscillation when operating in the first frequency band. At the same time, the length of the side located on the open side only needs to be λ1 / 4, which can effectively reduce the overall size and space occupation. As mentioned above, through the impedance matching adjustment of the matching unit 15, it can support the reception of electromagnetic wave signals in the first frequency band and the reception of electromagnetic wave signals in the second frequency band with a higher frequency, at least simultaneously.

[0061] Please see Figure 4 This is another simplified structural diagram of antenna assembly 1 in some embodiments of this application. Figure 4 As shown, the at least one first connecting edge B13 includes a first connecting edge B13, which is any shape such as arc, straight line or irregular shape, and is connected between the second end D2 of the first edge B11 and the fourth end D4 of the second edge B12; the at least one second connecting edge B23 includes a second connecting edge B23, which is any shape such as arc, straight line or irregular shape, and is connected between the sixth end D6 of the third edge B21 and the eighth end D8 of the fourth edge B22.

[0062] That is, in some embodiments, the number of the at least one first connecting edge B13 and the at least one second connecting edge B23 may each be only one.

[0063] in, Figure 4 In this configuration, each of the at least one first connecting edge B13 and the at least one second connecting edge B23 is an arc shape. The center of curvature of the first connecting edge B13 faces the side containing the first edge B11 and the second edge B12, while the center of curvature of the second connecting edge B23 faces the side containing the third edge B21 and the fourth edge B22. Thus, as... Figure 4As shown, the cavity antenna T1 formed by the conductive plate 11, the ground plane 12 and the conductive wall 13 of the antenna assembly 1 is roughly fan-shaped, and the conductive wall 13 is roughly arc-shaped.

[0064] Therefore, by setting the at least one first connecting edge B13 and the at least one second connecting edge B23 as an arc-shaped structure, the overall size of the cavity antenna T1 can be further reduced.

[0065] Please see Figure 5 This is another simplified structural diagram of antenna assembly 1 in some embodiments of this application. Figure 5 As shown, both the at least one first connecting edge B13 and the at least one second connecting edge B23 are single and linear. Therefore, as... Figure 5 As shown, the cavity antenna T1 formed by the conductive plate 11, ground plane 12, and conductive wall 13 of the antenna assembly 1 is approximately triangular, and the conductive wall 13 is planar. Compared to... Figure 1 The structure shown, by setting the at least one first connecting edge B13 and the at least one second connecting edge B23 as a straight connecting edge, can further reduce the size by nearly half, which is more conducive to reducing the overall size of the cavity antenna T1.

[0066] Obviously, as mentioned above, in some embodiments, the at least one first connecting edge B13 includes a first connecting edge B13, which may also be an irregular shape or any other shape; the at least one second connecting edge B23 includes a second connecting edge B23, which may also be an irregular shape or any other shape.

[0067] Please see Figure 6 This is another simplified structural diagram of the antenna assembly 1 in some embodiments of this application. Figure 6 As shown, the at least one first connecting edge B13 includes at least three first connecting edges B13, which are straight lines and are sequentially connected between the second end D2 of the first edge B11 and the fourth end D4 of the second edge B12, with adjacent first connecting edges B13 connected at an angle. The at least one second connecting edge B23 includes at least three second connecting edges B23, which are straight lines and are sequentially connected between the sixth end D6 of the third edge B21 and the eighth end D8 of the fourth edge B22, with adjacent second connecting edges B23 connected at an angle. In this case, the conductive wall 13 correspondingly includes at least three intersecting planes.

[0068] Among them, the included angle θ between any two adjacent first connecting edges B13 is greater than 90°, and the included angle between any two adjacent second connecting edges B23 is also greater than 90°.

[0069] In some embodiments, such as Figure 6 As shown, the connecting vertices of any two adjacent first connecting edges B13 are farther away from the first edge B11 and the second edge B12 than the two adjacent first connecting edges B13. The connecting vertices of any two adjacent second connecting edges B23 are farther away from the third edge B21 and the fourth edge B22 than the two adjacent second connecting edges B23. Therefore, the at least three first connecting edges B13 are generally convex on the side away from the first edge B11 and the second edge B12, and the at least three second connecting edges B23 are generally convex on the side away from the third edge B21 and the fourth edge B22.

[0070] Therefore, by setting the at least one first connecting edge B13 and the at least one second connecting edge B23 to a structure that includes at least three connecting edges, the overall size of the cavity antenna T1 can also be reduced.

[0071] Obviously, in some embodiments, when the at least one first connecting edge B13 includes two or more first connecting edges B13, the shapes of at least some of the first connecting edges B13 may be different; for example, some may be arc-shaped and some may be straight. Similarly, when the at least one second connecting edge B23 includes two or more second connecting edges B23, the shapes of at least some of the second connecting edges B23 may be different; for example, some may be arc-shaped and some may be straight. It is only necessary to ensure that the projection of each first connecting edge B13 of the conductive plate 11 onto the ground plane 12 approximately coincides with the corresponding second connecting edge B23.

[0072] in, Figures 4-6 The perspective and the aforementioned Figure 1 , Figure 3 The perspectives are different. Figures 4-6 From the perspective of the two opening sides S1 and S2, both face inward.

[0073] Please see Figure 7 This is a schematic diagram of the structure of the matching unit 15 in some embodiments of this application. For example... Figure 7As shown, the matching unit 15 includes a first matching branch 151, a second matching branch 152, and a third matching branch 153. The first matching branch 151 and the second matching branch 152 are sequentially coupled between the feed source 14 and the conductive plate 11, and the third matching branch 153 is coupled between the connection node N0 of the first matching branch 151 and the second matching branch 152 and the ground plane 12. Each of the first matching branch 151, the second matching branch 152, and the third matching branch 153 includes at least one matching element M1.

[0074] That is, in some embodiments, the matching unit 15 is coupled between the conductive plate 11, the ground plane 12 and the feed 14, and the matching unit 15 includes three matching branches: a first matching branch 151, a second matching branch 152 and a third matching branch 153, presenting a T-shaped structure, and each matching branch includes at least one matching element M1, which can realize the corresponding impedance matching adjustment, so that the cavity antenna T1 can support the reception of electromagnetic wave signals in at least the first frequency band and the second frequency band at the same time.

[0075] In some embodiments, as described above, the lengths of the first side B11 and the second side B12 of the conductive plate 11 of the antenna assembly 1 of this application are both equal to 1 / 4 of the wavelength corresponding to the lower frequency band supported, for example, 1 / 4 of the wavelength corresponding to the aforementioned first frequency band, i.e., λ1 / 4. Therefore, the distance between the point of maximum electric field of the cavity antenna T1 and the grounded conductive wall 13 still satisfies λ1 / 4, satisfying the boundary condition of the minimum size required for electromagnetic oscillation when operating in the first frequency band, and thus can at least support the reception of electromagnetic wave signals in the first frequency band. Furthermore, as described above, through the impedance matching adjustment of the matching unit 15, it is possible to simultaneously support the reception of electromagnetic wave signals in the first frequency band and the reception of electromagnetic wave signals in the higher frequency second frequency band.

[0076] In some embodiments, the matching unit 15 performs impedance matching adjustment so that the impedance matching can basically meet the impedance matching requirements of the first frequency band and the second frequency band at the same time, thereby ensuring that the antenna radiation efficiency in both the first and second frequency bands meets the requirements, effectively widening the bandwidth and covering both the first and second frequency bands.

[0077] Since the grounding plate 12 in this application is grounded, the connection between the matching unit 15 and the grounding plate 12 includes a direct connection to the grounding plate 12, or the matching unit 15 being connected to other grounding structures, which is equivalent to a connection to the grounding plate 12. Similarly, the third matching branch 153 is coupled between the connection node N0 of the first matching branch 151 and the second matching branch 152 and the grounding plate 12, which also includes the third matching branch 153 being directly connected between the connection node N0 of the first matching branch 151 and the second matching branch 152 and the grounding plate 12, or the third matching branch 153 being connected between the connection node N0 of the first matching branch 151 and the second matching branch 152 and other grounding structures.

[0078] in, Figure 7 The matching unit 15 shown is merely an example, and it can have other structures. For instance, in some embodiments, the matching unit 15 may include four matching branches, such as two of which are simultaneously connected to the ground plane 12, forming a "π"-shaped structure. Alternatively, in some embodiments, the matching unit 15 may include only two matching branches, for example, two matching branches that are sequentially coupled between the feed source 14 and the conductive plate 11, with the connection nodes of the two matching branches directly connected to the ground plane 12.

[0079] The structure of the matching unit 15 and the matching parameter values ​​of the matching elements included in each matching branch of the matching unit 15 can be determined by prior testing. For example, when it is determined by testing that the antenna radiation efficiency of the antenna assembly 1 is high in both the first and second frequency bands, the structure of the matching unit 15 and the matching element M1 have matching parameter values.

[0080] In some embodiments, the matching element M1 may be a capacitor or an inductor, and the at least one matching element M1 may include a capacitor and / or an inductor.

[0081] Please see Figure 8 This is a further structural schematic diagram of the matching unit 15 in some embodiments of this application. In some embodiments, such as Figure 8 As shown, the first matching branch 151 includes a first inductor L1, the second matching branch 152 includes a second inductor L2 and a first capacitor C1 connected in series, and the third matching branch 153 includes a third inductor L3 and a second capacitor C2 connected in series.

[0082] That is, in some embodiments, at least one matching element M1 included in the first matching branch 151 may be the first inductor L1, at least one matching element M1 included in the second matching branch 152 may be a second inductor L2 and a first capacitor C1 connected in series, and at least one matching element M1 included in the third matching branch 153 may be a third inductor L3 and a second capacitor C2 connected in series.

[0083] In some embodiments, the inductance value of the first inductor L1 is 8.2nH (NaH), the inductance value of the second inductor L2 is 22nH, the capacitance value of the first capacitor C1 is 0.5pF, the inductance value of the third inductor L3 is 13nH, and the capacitance value of the second capacitor C2 is 6.1pF.

[0084] Therefore, in some embodiments, the first matching branch 151 includes a first inductor L1, the second matching branch 152 includes a second inductor L2 and a first capacitor C1 connected in series, and the third matching branch 153 includes a third inductor L3 and a second capacitor C2 connected in series. The inductance value of the first inductor L1 is 8.2nH, the inductance value of the second inductor L2 is 22nH, the capacitance value of the first capacitor C1 is 0.5pF, the inductance value of the third inductor L3 is 13nH, and the capacitance value of the second capacitor C2 is 6.1pF. This enables the matching unit 15 to achieve good impedance matching for both the first and second frequency bands, resulting in high radiation efficiency of the cavity antenna T1 when operating in both the first and second frequency bands, meeting communication requirements, and enabling the reception of electromagnetic wave signals in at least the first and second frequency bands simultaneously.

[0085] Obviously, Figure 8 This is merely an example. As mentioned earlier, the structure of the matching unit 15 and the matching element M1 can have matching parameter values ​​that ensure high antenna radiation efficiency for the antenna assembly 1 in both the first and second frequency bands. For example, the first matching branch 151 may include two inductors in parallel, the second matching branch 152 may include an inductor and a capacitor in parallel, the third matching branch 153 may include only one inductor, and so on.

[0086] In some embodiments, such as Figure 1 As shown, the conductive plate 11 includes a power supply point F1, and the matching unit 15 is directly connected between the power supply point F1 of the conductive plate 11, the ground plane 12, and the feed source 14.

[0087] That is, in some embodiments, the conductive plate 11 includes a feed point F1, and the aforementioned matching unit 15 is coupled between the feed point F1, the ground plane 12, and the feed source 14 of the conductive plate 11. Alternatively, the matching unit 15 can be directly connected between the feed point F1, the ground plane 12, and the feed source 14 of the conductive plate 11. In other words, in some embodiments, the feed source 14 is directly connected to the feed point F1 of the conductive plate 11 through the matching unit 15, and the conductive plate 11 is excited after impedance matching adjustment by the matching unit 15, thereby exciting the cavity antenna T1 to at least support the reception of electromagnetic wave signals in the first and second frequency bands.

[0088] In some embodiments, the feed point F1 can be located at any position on the conductive plate 11. For example, the feed point F1 can be located on the first side B11 between the first end D1 and the second end D2, or located near the first side B11 with its projection on the first side B11 between the first end D1 and the second end D2. Alternatively, the feed point F1 can be located on the second side B12 between the third end D3 and the fourth end D4, or located near the second side B12 with its projection on the second side B12 between the third end D3 and the fourth end D4. In some embodiments, the feed point F1 can also be located near the center of the conductive plate 11. In some embodiments, the perpendicular distance between the feed point F1 and the conductive wall 13 along the extension direction of the first side B11 or the second side B12 can be 1 / 3, 1 / 2, or 2 / 3 of the length of the first side B11 or the second side B12, etc. Figure 1 The example shown is that the power supply point F1 is located near the first side B11 and its projection on the first side B11 is located between the first end D1 and the second end D2.

[0089] Since the first side B11 and the second side B12 are generally free ends, and the at least one first connecting side B13 is connected to the ground plane 12 through the conductive wall 13 and is grounded, it is equivalent to a grounding end. The conductive plate 11 is connected to the feed source 14 through the feed point F1, forming a structure similar to an inverted F antenna (IFA). Therefore, it can operate in the first frequency band and the second frequency band under the excitation of the feed source 14 and the impedance matching adjustment of the matching unit 15. Furthermore, since the lengths of both the first side B11 and the second side B12 are equal to λ1 / 4, the cavity antenna T1 can oscillate as a whole in the first frequency band. Under the excitation of the feed 14, it can at least support the reception of electromagnetic wave signals in the first frequency band. After impedance matching adjustment by the matching unit 15, the operating mode of the second frequency band can also be effectively excited, resulting in higher radiation efficiency. This allows the cavity antenna T1 to oscillate simultaneously in the second frequency band, and under the excitation of the feed 14, it can at least support the reception of electromagnetic wave signals in the second frequency band.

[0090] In some embodiments, the first frequency band and the second frequency band are relatively close frequency bands. For example, the ratio of the center frequency of the second frequency band to the center frequency of the first frequency band is less than a preset value, such as less than 1.5. Therefore, when the lengths of the first side B11 and the second side B12 are both equal to λ1 / 4, that is, equal to 1 / 4 of the wavelength corresponding to the first frequency band, the resonance requirements of the second frequency band can be met to a certain extent. After impedance matching adjustment by the matching unit 15, the impedance matching of the second frequency band can also be better achieved, resulting in higher radiation efficiency of the second frequency band. The operating frequency of the second frequency band can be effectively excited, and the cavity antenna T1 can also oscillate in the second frequency band at the same time. Under the excitation of the feed 14, it can also at least support the reception of electromagnetic wave signals in the second frequency band.

[0091] Please see Figure 9 This is a schematic diagram showing the current distribution of antenna component 1 operating in the first frequency band in some embodiments of this application. Figure 9 It can be used as Figure 1 , Figures 4-6 The current distribution diagram for the first frequency band is obtained by simulation test of antenna component 1 shown in any embodiment.

[0092] in, Figure 9The diagram illustrates current distribution schematics (a1 and a2). Schematic (a1) shows the overall current distribution on the conductive plate 11 when the antenna assembly 1 operates in the first frequency band, while schematic (a2) shows the current distribution on the first side B11 and the second side B12 when the antenna assembly 1 operates in the first frequency band. Figure 9 As shown in the current distribution diagram (a1), since the lengths of both the first side B11 and the second side B12 of the conductive plate 11 are equal to λ1 / 4, which is 1 / 4 of the wavelength of the first frequency band, there are essentially no zero-current points on the conductive plate 11 when it operates in the first frequency band. This is mainly because the zero-current points are roughly located at the two ends of the first side B11 and the second side B12, making it appear as if there are no zero-current points on the conductive plate 11. Figure 9 The schematic diagram of the current distribution (a2) also shows that the first side B11 and the second side B12 of the conductive plate 11 are basically the regions with large current Q1. Therefore, the energy of the oscillating electromagnetic wave in the first frequency band is relatively high.

[0093] Please see Figure 10 This is a schematic diagram showing the current distribution of antenna component 1 operating in the second frequency band in some embodiments of this application. Figure 10 It can also be used as Figure 1 , Figures 4-6 The current distribution diagram for the second frequency band is obtained by simulation test of the antenna component 1 shown in any embodiment.

[0094] in, Figure 10 The diagram illustrates current distribution schematics (b1 and b2). Schematic (b1) shows the overall current distribution on the conductive plate 11 when the antenna assembly 1 operates in the second frequency band, while schematic (b2) shows the current distribution on the first side B11 and the second side B12 when the antenna assembly 1 operates in the second frequency band. Figure 10 As shown in the current distribution diagram (b1), since the lengths of the first side B11 and the second side B12 of the conductive plate 11 are both equal to λ1 / 4, which is 1 / 4 of the wavelength of the first frequency band, it will be greater than 1 / 4 of the wavelength corresponding to the higher frequency second frequency band. Since the current zero point represents the trough position of the electromagnetic wave, when the conductive plate 11 operates in the second frequency band, a current zero point region Q2 will appear on the conductive plate 11. Figure 10The current distribution diagram (b2) also shows that within the high current region Q1 on the first side B11 and the second side B12 of the conductive plate 11, there is a zero current region Q2. This is because the second frequency band is higher and has a shorter wavelength than the first frequency band. Therefore, the size of the cavity antenna T1, i.e., the size on the first side B11 and the second side B12, is greater than one-quarter of the wavelength of the second frequency band. Consequently, the electromagnetic wave corresponding to the second low frequency band will travel a longer distance than one-quarter of the wavelength on the first side B11 and the second side B12, making the zero current region Q2 more obvious. This is also consistent with the expectations of current mode theory.

[0095] In some embodiments, as mentioned above, the ratio of the center frequency of the second frequency band to the center frequency of the first frequency band is less than a preset value, for example, less than 1.5. Therefore, when the antenna assembly 1 operates at the second frequency, at most one current zero point will appear on both the first side B11 and the second side B12, thus having little actual impact on the energy of the oscillating electromagnetic wave. Therefore, after impedance matching adjustment by the matching unit 15, the operating mode of the second frequency band can be effectively activated, and the radiation efficiency will meet the requirements.

[0096] Please see Figure 11 The diagram below shows other simplified structural diagrams of the antenna assembly 1 in some embodiments of this application. In some embodiments, the antenna assembly 1 further includes a feed coupling stub 16, which is spaced apart from and parallel to the first side B11 and / or the second side B12 of the conductive plate 11 and coupled to the conductive plate 11. A matching unit 15 is connected between the feed coupling stub 16, the ground plane 12, and the feed source 14. The matching unit 15 is coupled to the conductive plate 11 through the feed coupling stub 16. The feed source 14 couples and excites the cavity antenna T1 through the matching unit 15 and the feed coupling stub 16. The cavity antenna T1 supports the reception of electromagnetic wave signals in at least two frequency bands under the coupling excitation of the feed source 14 and the impedance matching adjustment of the matching unit 15.

[0097] That is, in some embodiments, the aforementioned matching unit 15 is coupled between the feed point F1 of the conductive plate 11, the ground plane 12, and the feed source 14. This can be achieved by connecting the matching unit 15 between the feed coupling stub 16, the ground plane 12, and the feed source 14, and then coupling the matching unit 15 to the conductive plate 11 through the feed coupling stub 16. Thus, in some embodiments, the feed source 14 couples and excites the cavity antenna T1 through the matching unit 15 and the feed coupling stub 16.

[0098] Therefore, in some embodiments, the cavity antenna T1 can be effectively excited to support the reception of electromagnetic wave signals in at least two frequency bands simultaneously through coupling excitation.

[0099] Specifically, the feed source 14 is used to provide a feed signal. The feed signal provided by the feed source 14 is coupled to the cavity of the cavity antenna T1 through the matching unit 15 and the feed coupling stub 16, forming a periodically oscillating electromagnetic wave signal in the cavity, that is, forming a periodically oscillating first frequency band and second frequency band electromagnetic wave signal, and at least supporting the reception of the first frequency band and second frequency band electromagnetic wave signal.

[0100] In some embodiments, when the matching unit 15 is directly connected between the feed point F1 of the conductive plate 11, the ground plane 12, and the feed source 14, the feed signal provided by the feed source 14 is directly fed into the feed point F1 of the conductive plate 11 through the matching unit 15, thus forming a periodically oscillating electromagnetic wave signal in the cavity of the cavity antenna T1, that is, forming periodically oscillating electromagnetic wave signals of the first and second frequency bands, and at least supporting the reception of electromagnetic wave signals of the first and second frequency bands.

[0101] In some embodiments, the power supply coupling stub 16 is a straight strip, spaced apart from and parallel to the first side B11 or the second side B12 of the conductive plate 11, and coupled to the conductive plate 11.

[0102] That is, in some embodiments, the power supply coupling stub 16 may be coupled to the conductive plate 11 in a spaced-apart and parallel manner to either the first side B11 or the second side B12. Figure 9 The example shown is that the power supply coupling stub 16 is close to the first side B11 of the conductive plate 11 and is spaced apart from and parallel to the first side B11 of the conductive plate 11 and coupled to the conductive plate 11.

[0103] Thus, in some embodiments, the feed coupling stub 16 can be spaced apart from and parallel to one side of the conductive plate 11 located on the opening side, so that the feed source 14 can effectively couple and excite the cavity antenna T1 through the matching unit 15 and the feed coupling stub 16.

[0104] In some embodiments, the projection area of ​​the power supply coupling stub 16 onto the first side B11 or the second side B12 of the conductive plate 11 is smaller than the size of the first side B11 or the second side B12, and can be located at any suitable position on the first side B11 or the second side B12. That is, the power supply coupling stub 16 can be directly opposite any suitable position on the first side B11 or the second side B12. The projection area of ​​the power supply coupling stub 16 onto the first side B11 or the second side B12 of the conductive plate 11, that is, the area on the first side B11 or the second side B12 of the conductive plate 11 directly opposite the power supply coupling stub 16, is equivalent to a power supply area. In other words, the equivalent power supply area can be located at any suitable position on the first side B11 or the second side B12.

[0105] in, Figure 11 The structure of the antenna assembly 1 shown differs from that of the previous embodiment in that the conductive plate 11 is fed by coupling, and the cavity antenna T1 is excited by coupling excitation. For other more specific structures, please refer to the relevant content of the previous embodiment.

[0106] Please see Figure 12 This is another simple structural diagram of antenna assembly 1 in some embodiments of this application. Figure 12 As shown, in some embodiments, the power supply coupling stub 16 may be bent. The power supply coupling stub 16 includes a first power supply coupling stub 161 and a second power supply coupling stub 162. The first power supply coupling stub 161 is spaced apart from and parallel to the first side B11 of the conductive plate 11, and the second power supply coupling stub 162 is spaced apart from and parallel to the second side B12 of the conductive plate 11.

[0107] That is, in some embodiments, the feed coupling stub 16 can be spaced apart from and parallel to the first side B11 and the second side B12 of the conductive plate 11, thereby effectively increasing the coupling area with the conductive plate 11, thereby effectively increasing the coupling energy, and thus effectively improving the radiation performance of the cavity antenna T1 under the coupling excitation of the feed source 14.

[0108] In some embodiments, such as Figure 12 As shown, when the power supply coupling branch 16 is bent and includes a first power supply coupling branch 161 and a second power supply coupling branch 162, the power supply coupling branch 16 can be disposed at the connection between the first side B11 and the second side B12 of the conductive plate 11, and the connection between the first power supply coupling branch 161 and the second power supply coupling branch 162 can be close to the connection between the first side B11 and the second side B12 of the conductive plate 11.

[0109] In some embodiments, the distance between the power supply coupling stub 16 and the first side B11 and / or the second side B12 can be any distance required to satisfy the coupling between the power supply coupling stub 16 and the conductive plate 11.

[0110] The matching unit 15 can be connected to any suitable position of the power supply coupling stub 16, for example, it can be connected to the end, middle position, etc. of the power supply coupling stub 16.

[0111] in, Figure 11 as well as Figure 12 The difference between the structure of the antenna assembly 1 shown and that of the previous embodiment is that the conductive plate 11 is fed by coupling, and the cavity antenna T1 is excited by coupling excitation. For other more specific structures, please refer to the relevant content of the previous embodiment. For clarity, the following is a more detailed illustration: Figure 11 as well as Figure 12 Some of the labels in the text are relative Figure 1 The text has been omitted.

[0112] In some embodiments, the first frequency band and the second frequency band are two frequency bands in the navigation communication frequency band. The navigation communication frequency band may be a GPS navigation frequency band, a BeiDou navigation frequency band, a Galileo navigation frequency band, or a GLONASS navigation frequency band, etc.

[0113] For example, the first frequency band could be the GPS L5 band (resonant frequency approximately 1176MHz), and the second frequency band could be the GPS L1 band (resonant frequency approximately 1575MHz); or, the first frequency band could be the BDS B2 band (BeiDou B2 band, resonant frequency approximately 1207MHz), and the second frequency band could be the BDS B1 band (BeiDou B1 band, resonant frequency approximately 1561MHz); or, the first frequency band could be the GAL E5b band (Galileo E5b band, resonant frequency approximately 1207MHz), and the second frequency band could be the GAL E5b band (Galileo E1 band, resonant frequency approximately 1575MHz), and so on.

[0114] Obviously, in some embodiments, the first frequency band and the second frequency band can be any other two frequency bands, such as two mid-to-high frequency bands in a cellular communication network, or two low frequency bands, etc. Alternatively, in some embodiments, they can be different frequency bands in the WiFi band, for example, the WiFi 2.4G band and the WiFi 5G band respectively.

[0115] In this application, the support for receiving electromagnetic wave signals in at least the first and second frequency bands may include: in addition to supporting the reception of electromagnetic wave signals in the first and second frequency bands, it may also support the transmission of electromagnetic wave signals in the first and second frequency bands, or it may also support the reception of other frequency bands, or it may also support the reception and transmission of other frequency bands, etc.

[0116] In some embodiments, when the first frequency band and the second frequency band can be two frequency bands in a cellular communication network or two frequency bands in a WiFi frequency band, that is, when the first frequency band and the second frequency band are not two frequency bands in a navigation communication frequency band, the cavity antenna T1 is used to support the reception and transmission of electromagnetic wave signals in at least the first frequency band and the second frequency band under the excitation of the feed source 14 and the impedance matching adjustment of the matching unit 15. In other words, when the first frequency band and the second frequency band are not two frequency bands in a navigation communication frequency band, the cavity antenna T1, under the excitation of the feed source 14 and the impedance matching adjustment of the matching unit 15, not only supports the reception of electromagnetic wave signals in the first frequency band and the second frequency band, but also supports the transmission of these two frequency bands.

[0117] In some embodiments, the cavity antenna T1 can also support the transmission and reception of electromagnetic wave signals in a third frequency band under the excitation of the feed source 14 and the impedance matching adjustment of the matching unit 15. For example, when the first frequency band and the second frequency band are two frequency bands in navigation communication bands, the third frequency band can be a frequency band in cellular communication networks, or a frequency band in non-navigation communication bands such as WiFi.

[0118] Therefore, in this application, by forming a cavity antenna T1, radiation can be emitted through the side openings. Good antenna radiation performance is achieved with only a certain clearance near the side openings, thus requiring very little clearance and allowing application in environments with limited clearance. Furthermore, the cavity antenna T1 of this application has two side openings S1 and S2. The point of maximum electric field is the intersection of the first side B11 and the second side B12. Since the lengths of both the first side B11 and the second side B12 are equal to λ1 / 4, the distance from the point of maximum electric field of the cavity antenna T1 to the grounded conductive wall 13 still satisfies λ1 / 4, meeting the boundary condition for the minimum size required for electromagnetic oscillation in the first frequency band. Simultaneously, the length of the side opening only needs to be λ1 / 4, effectively reducing the overall size and space occupation.

[0119] Furthermore, in this application, when the first frequency band and the second frequency band are two frequency bands in the navigation communication frequency band, the antenna assembly 1 supports dual-frequency navigation communication frequency bands, such as dual-frequency GPS. It can effectively correct atmospheric errors and multipath interference by receiving signals from two or more different frequency bands, thereby improving the accuracy and reliability of navigation and positioning.

[0120] In some embodiments, the distance between the conductive plate 11 and the ground plane 12, i.e., the height of the cavity antenna T1, can be any suitable distance, as long as it meets the efficiency and bandwidth requirements of the cavity antenna T1 operating in the first and second frequency bands. In some embodiments, the distance between the conductive plate 11 and the ground plane 12 can be approximately 3 mm.

[0121] Please see Figure 13 This is a simplified structural diagram illustrating a portion of the internal structure of an electronic device 100 in some embodiments of this application. The electronic device 100 may include the antenna assembly 1 in any of the foregoing embodiments.

[0122] in, Figure 13 The diagram illustrates a simple example of the antenna assembly 1 located within the electronic device 100. (See diagram for example.) Figure 13 As shown, the electronic device 100 includes two adjacent side frames 2, and the two open side frames S1 and S2 are respectively adjacent to and spaced apart from the two adjacent side frames 2.

[0123] As mentioned above, the conductive plate 11, ground plane 12, and conductive wall 13 of the antenna assembly 1 form a cavity antenna T1 with two open sides S1 and S2. Generally, the open sides S1 and S2 of the cavity antenna T1 are radiation windows for electromagnetic wave signals. Therefore, by placing the two open sides S1 and S2 adjacent to and spaced apart from the two adjacent side frames 2, the clear area near the side frame 2 of the electronic device 100 can be used to receive electromagnetic wave signals, thereby ensuring antenna performance.

[0124] In some embodiments, the two open side surfaces S1 and S2 are parallel to the two adjacent side frames 2, respectively.

[0125] As mentioned above, in some embodiments, the first side B11 and the second side B12 are both straight lines and perpendicularly connected, as are the third side B21 and the fourth side B22. Since the first side B11 and the third side B21 are two opposite sides of one of the open side surfaces S1, and the second side B12 and the fourth side B22 are two opposite sides of the other open side surface S2, the open side surface S1 is actually the side surface defined by the first side B11 and the third side B21, and the open side surface S2 is the side surface defined by the second side B12 and the fourth side B22. Because the first side B11 and the second side B12 are both straight lines and perpendicularly connected, and the third side B21 and the fourth side B22 are both straight lines and perpendicularly connected, the two open side surfaces S1 and S2 are also perpendicularly connected. Since the two adjacent side frames 2 of the electronic device 100 are usually also perpendicular, placing the two open side surfaces S1 and S2 parallel to the two adjacent side frames 2 can help save space occupied by the antenna assembly 1 in the electronic device 100.

[0126] in, Figure 13 The electronic device 100 shown includes an antenna assembly 1 that is designed to... Figure 1 The structure of the antenna assembly 1 shown is illustrated, and some components are omitted, such as the feed 14 and the matching unit 15.

[0127] Please see Figure 14 This is a schematic diagram illustrating the return loss of the antenna assembly 1 included in some embodiments of the electronic device 100 of this application. Figure 14 The antenna assembly 1 included in the electronic device 100 may be the antenna assembly 1. Figure 1 , Figures 4-6 as well as Figures 11-12 The return loss curve obtained by simulation test is shown in the example of antenna component 1 in any embodiment.

[0128] in, Figure 14 The return loss curve S11-1 is illustrated, with examples provided using GPS L5 as the first frequency band and GPS L1 as the second frequency band. Clearly, as mentioned earlier, the first and second frequency bands can be other navigation and communication frequency bands, or other frequency bands within a cellular communication network.

[0129] The return loss curve is also known as the input return loss. The frequency corresponding to the lowest point of the return loss curve is the resonant frequency. The lower the input return loss, the lower the loss at that resonant frequency, and the higher the antenna efficiency.

[0130] like Figure 14 As shown, the return loss at the resonant frequency of 1.176 GHz in the first frequency band (GPS L5 band) is approximately -11.29 dB, while the return loss at the resonant frequency of 1.575 GHz in the second frequency band (GPS L5 band) is approximately -12.46 dB. Therefore, it can be seen that the return loss of the antenna assembly 1 included in the electronic device 100 is low in both the first and second frequency bands.

[0131] Please see Figure 15 This is a schematic diagram showing the radiation efficiency and overall system efficiency curves of the antenna assembly 1 included in some embodiments of the electronic device 100 of this application. Figure 15 Alternatively, the antenna assembly 1 included in the electronic device 100 can be used as the antenna assembly 1. Figure 1 , Figures 4-6 as well as Figures 11-12 The following is a schematic diagram of the radiation efficiency and overall system efficiency curves obtained from simulation testing using the antenna component 1 shown in any embodiment.

[0132] in, Figure 15 The radiation efficiency curve Sr1 and the overall system efficiency curve St1 are illustrated, and examples are given with the first frequency band being the GPS L5 band and the second frequency band being the GPS L1 band.

[0133] In this context, the peak value of the overall system efficiency curve within the same frequency band generally corresponds to the trough value of the corresponding input echo curve. For example... Figure 15 As shown, the radiation efficiency at the resonant frequency of 1.176 GHz in the first frequency band (GPS L5 band) is approximately -4.6 dB, and the overall system efficiency is also approximately -4.6 dB. Both the radiation efficiency and the overall system efficiency are relatively high, achieving good antenna efficiency. Furthermore, at the resonant frequency of 1.575 GHz in the second frequency band (GPS L5 band), the radiation efficiency is approximately -3.71 dB, and the overall system efficiency is also approximately -3.71 dB. Both the radiation efficiency and the overall system efficiency are relatively high.

[0134] Therefore, it can be seen that the antenna assembly 1 of the electronic device 100 of this application can achieve good antenna performance in both the first frequency band and the second frequency band.

[0135] Please see Figure 16 This is the antenna pattern of the antenna assembly 1 of the electronic device 100 in some embodiments of this application when it operates in the first frequency band. Figure 16 Alternatively, the antenna assembly 1 included in the electronic device 100 can be used as the antenna assembly 1. Figure 1 , Figures 4-6 as well as Figures 11-12Taking the antenna assembly 1 shown in any embodiment as an example, simulation test was performed to obtain the antenna pattern of the first frequency band in which the antenna assembly 1 operates in the GPS L5 frequency band.

[0136] like Figure 16 As shown, the electronic device 100 also includes a display screen 3. Let the plane containing the display screen 3 be the XOY plane, and the direction perpendicular to the display screen 3 and pointing to one side of the display screen 3 be the positive Z-axis. In the antenna pattern, the direction from light to dark in color is the main radiation direction, i.e., the beam direction. Figure 16 It can be seen that when the antenna assembly 1 operates in the first frequency band, its main radiation direction is biased towards the upper hemisphere, that is, towards the positive Z-axis, i.e., towards the vertical display screen 3 and pointing to one side of the display screen 3. Therefore, regardless of whether the user holds the electronic device 100 horizontally or at a certain angle, and regardless of whether the electronic device 100 is held horizontally or vertically, the beam direction R1, i.e., the main radiation direction, is always biased towards the upper hemisphere, i.e., towards the positive Z-axis. Therefore, when the first frequency band is a navigation communication frequency band, such as the GPS L1 band, it is advantageous to point upwards, and pointing towards the navigation communication satellites located above, which is beneficial to improving the antenna performance of the navigation communication frequency band.

[0137] Please see Figure 17 This is the antenna pattern of the antenna assembly 1 of the electronic device 100 in some embodiments of this application when it operates in the second frequency band. Figure 17 Alternatively, the antenna assembly 1 included in the electronic device 100 can be used as the antenna assembly 1. Figure 1 , Figures 4-6 as well as Figures 11-12 Taking the antenna assembly 1 shown in any embodiment as an example, simulation test results show that the antenna pattern of the antenna assembly 1 operating in the second frequency band of GPS L1 frequency band is obtained.

[0138] In some embodiments, the two adjacent side frames 2 of the two open sides S1 and S2 can be respectively Figure 17 The side border 2 located at the top and the side border 2 located on the right in the view shown.

[0139] like Figure 17 As shown, let the plane where the display screen 3 of the electronic device 100 is located be the XOY plane, and the direction perpendicular to the display screen 3 and pointing to one side of the display screen 3 be the positive Z-axis direction. From Figure 17It can be seen that when the antenna assembly 1 operates in the second frequency band, the beam direction R1, i.e., the main radiation direction, is biased towards the upper hemisphere, that is, towards the positive Z-axis. Therefore, regardless of whether the user holds the electronic device 100 horizontally or at a certain angle, and regardless of whether the electronic device 100 is held horizontally or vertically, the beam direction R1, i.e., the main radiation direction, is always biased towards the upper hemisphere, that is, towards the positive Z-axis. Therefore, when the second frequency band is a navigation communication frequency band, such as the GPS L1 band, it is advantageous to point upwards, and pointing towards navigation communication satellites located above is beneficial to improving the antenna performance of the navigation communication frequency band.

[0140] Please see Figure 18 This is a schematic diagram showing a portion of the internal structure of an electronic device 100 as viewed from the display screen side in some embodiments of this application. For example, Figure 18 As shown, and as previously mentioned, the electronic device 100 also includes a display screen 3, wherein a gap exists between the display screen 3 and the side frame 2 to form a black border area H1, and the projections of the two open side surfaces S1 and S2 on the plane of the display screen 3 are located within the black border area H1.

[0141] The black border area H1 between the display screen 3 and the side frame 2 is generally sealed with insulating materials such as glue, thus serving as a clearance area. By ensuring that the projections of the two open sides S1 and S2 onto the plane of the display screen 3 are located within the black border area H1, the electromagnetic wave signals radiated from the open sides S1 and S2 of the cavity antenna T1 can be conducted to the outside of the electronic device 100 through the black border area H1, enabling normal transmission of electromagnetic wave signals and ensuring antenna performance.

[0142] In some embodiments, since the electromagnetic wave signals radiated from the opening sides S1 and S2 of the cavity antenna T1 are conducted to the outside of the electronic device 100 through the black border area H1, they do not need to be conducted through the side frame 2. The side frame 2 of the electronic device 100 can be made entirely of metal material, thereby improving the overall appearance of the electronic device 100.

[0143] In some embodiments, the projections of the two open side surfaces S1 and S2 onto the plane of the display screen 3 coincide with the boundary line between the black border area H1 and the edge of the display screen 3.

[0144] The two open sides S1 and S2 are approximately perpendicular to the plane of the display screen 3. The projection of open side S1 onto the plane of the display screen 3 is actually a line connecting the projections of the first side B11 and the third side B21 onto the plane of the display screen 3. Similarly, the projection of open side S2 onto the plane of the display screen 3 is actually a line connecting the projections of the second side B12 and the fourth side B22 onto the plane of the display screen 3. By aligning the projections of the two open sides S1 and S2 onto the plane of the display screen 3 with the boundary line between the black border area H1 and the edge of the display screen 3, the cavity antenna T1 can maximize the utilization of the black border area H1. This maximizes the use of the clear area of ​​the black border area H1, meaning that electromagnetic wave signals radiated from the open sides S1 and S2 of the cavity antenna T1 can be conducted to the outside of the electronic device 100 almost entirely through the black border area H1, effectively ensuring antenna performance.

[0145] Obviously, in some embodiments, the portions of the two adjacent side frames 2 of the electronic device 100 facing the two opening sides S1 and S2 of the cavity antenna T1 can also be partially hollowed out. For example, by providing gaps, the electromagnetic wave signals radiated from the opening sides S1 and S2 of the cavity antenna T1 can be conducted to the outside of the electronic device 100 through the side frames 2, thereby further increasing the clearance area and further improving the antenna radiation performance.

[0146] Among them, such as Figure 18 As shown, the electronic device 100 may be square, comprising two opposite long sides and two opposite short sides, wherein, Figure 18 The antenna assembly 1 can be generally disposed in Figure 18 The upper right corner of the viewpoint shown is illustrated.

[0147] Please see Figure 19 This is a schematic side view of a portion of the structure of an electronic device 100 in some embodiments of this application. Figure 19 This can be a side view schematic diagram illustrating the internal structure of the electronic device 100 as viewed from its long side.

[0148] like Figure 19 As shown, the electronic device 100 includes a motherboard 4, the motherboard 4 includes a ground layer 41, and the ground plane 12 of the antenna assembly 1 may be grounded by being electrically connected to the ground layer 41 of the motherboard 4, or the ground plane 12 may be at least a portion of the ground layer 41.

[0149] That is, in some embodiments, the ground plane 41 of the motherboard 4 of the electronic device 100 can provide ground potential, the ground plane 12 of the antenna assembly 1 can be electrically connected to the ground plane 41 of the motherboard 4 to be grounded, or the ground plane 12 of the antenna assembly 1 can be directly a part of the ground plane 41 of the motherboard 4.

[0150] The preset area of ​​the ground layer 41 of the motherboard 4 can be exposed toward the side where the display screen 3 is located. For example, the preset area of ​​the ground layer 41 can be exposed by removing the preset area of ​​other layers of the motherboard 4 located on the side of the ground layer 41 near the display screen 3.

[0151] When the ground plane 12 of the antenna assembly 1 is electrically connected to the ground layer 41 of the motherboard 4 for grounding, the ground plane 12 of the antenna assembly 1 / the cavity antenna T1 can be supported on a preset area exposed on the side of the ground layer 41 facing the display screen 3 and electrically connected to the ground layer 41 to achieve grounding. When the ground plane 12 is at least a portion of the ground layer 41, at least one first connecting edge B13 of the antenna assembly 1 can be connected to a corresponding position in the preset area of ​​the ground layer 41 through a conductive wall 13. Thus, the conductive plate 11, the preset area of ​​the ground layer 41, and the conductive wall 13 can form a cavity antenna T1 with two open sides.

[0152] The feed source 14 can be disposed on the motherboard 4 and connected to the feed point F1 through a corresponding power supply connector. The power supply connector can be a conductive spring, a conductive wire, an FPC (flexible printed circuit board), etc.

[0153] In some embodiments, when the ground plane 12 can be at least a portion of the grounding layer 41, the space occupied by the cavity antenna T1 on the thickness of the electronic device 100 can be effectively reduced, thereby effectively saving space in the electronic device 100 and improving the utilization rate of space on the thickness of the electronic device 100.

[0154] Please see Figure 20 This is another side view schematic diagram illustrating a portion of the structure of the electronic device 100 in some embodiments of this application. Figure 20 Alternatively, it can be a side view schematically illustrating the internal structure of the electronic device 100 as viewed from its long side. For example, Figure 20 As shown, the electronic device 100 also includes a middle frame 5, the ground plane 12 of the antenna assembly 1 is electrically connected to the middle frame 5 and grounded, or the ground plane 12 is at least a portion of the middle frame 5.

[0155] Generally, the middle frame 5 is used to support the display screen 3 and to provide the overall ground potential. The ground plane 12 of the antenna assembly 1 can be electrically connected to the middle frame 5 for grounding, or the ground plane 12 of the antenna assembly 1 can be directly a part of the middle frame 5.

[0156] The middle frame 5 may include a first surface 51 and a second surface 52 facing each other. The first surface of the middle frame 5 faces the display screen 3 and is used to support the display screen 3. The second surface of the middle frame 5 can be used to support structures such as the motherboard 4. A predetermined area of ​​the middle frame 5 may be thinned or recessed away from the display screen 3 to accommodate the cavity antenna T1.

[0157] Specifically, when the ground plane 12 of the antenna assembly 1 is electrically connected to the middle frame 5 for grounding, the ground plane 12 of the cavity antenna T1 can be supported on a predetermined area of ​​the middle frame 5 and electrically connected to the middle frame 5 to achieve grounding. When the ground plane 12 is at least a portion of the middle frame 5, at least one first connecting edge B13 of the antenna assembly 1 can be connected to a corresponding position in the predetermined area of ​​the middle frame 5 via a conductive wall 13. Thus, the conductive plate 11, the predetermined area of ​​the middle frame 5, and the conductive wall 13 can form a cavity antenna T1 with two open sides.

[0158] Among them, such as Figure 20 As shown, since the middle frame 5 is disposed between the motherboard 4 and the display screen 3, when the ground plane 12 of the antenna assembly 1 is electrically connected to the grounding layer 41 of the motherboard 4 and grounded, or when the ground plane 12 is at least a part of the grounding layer 41, the part of the middle frame 5 corresponding to the preset area of ​​the grounding layer 41 of the motherboard 4 can be hollowed out so that the cavity antenna T1 can pass through.

[0159] Please see Figure 21 This is a simplified structural diagram illustrating another portion of the internal structure of the electronic device 100 in some embodiments of this application. Wherein, as... Figure 21 As shown, in some embodiments, the antenna assembly 1 included in the electronic device 100 may also be the aforementioned type. Figure 4 The antenna assembly 1 shown, namely, the at least one first connecting edge B13 and the at least one second connecting edge B23 are both one and are arc-shaped, and the cavity antenna T1 formed by the conductive plate 11, the ground plane 12 and the conductive wall 13 of the antenna assembly 1 is approximately fan-shaped.

[0160] Similarly, the two open side surfaces S1 and S2 of the cavity antenna T1 are respectively adjacent to and spaced apart from the two adjacent side frames 2, while the conductive wall 13 is close to the interior of the electronic device 100. Since the conductive wall 13 is roughly curved at this time, it can form more clearance space, which facilitates the placement of other functional devices of the electronic device 100.

[0161] Please see Figure 22 This is a simplified structural diagram illustrating a portion of the internal structure of the electronic device 100 in some embodiments of this application. Wherein, as... Figure 22 As shown, in some embodiments, the antenna assembly 1 included in the electronic device 100 may also be the aforementioned type. Figure 6 The antenna assembly 1 shown includes at least three first connecting edges B13, which are straight and connected sequentially between the second end D2 of the first edge B11 and the fourth end D4 of the second edge B12, with adjacent first connecting edges B13 connected at an angle; and at least three second connecting edges B23, which are straight and connected sequentially between the sixth end D6 of the third edge B21 and the eighth end D8 of the fourth edge B22.

[0162] At this time, the cavity antenna T1 may also form a fan-shaped structure. The conductive wall 13 includes up to three connected planes, which can also form a non-smooth arc surface. Thus, more clearance space can be formed, which facilitates the placement of other functional devices of the electronic device 100.

[0163] Please see Figure 23 This is a simplified structural diagram illustrating a portion of the internal structure in some embodiments of this application. Wherein, as... Figure 23 As shown, and as mentioned above Figure 11 As shown in the figure, the electronic device 100 includes multiple sets of two adjacent side frames 2, and the antenna assembly 1 may include multiple antenna assemblies. Each antenna assembly 1 is disposed at a set of two adjacent side frames 2, and the two open side surfaces S1 and S2 of each antenna assembly 1 are adjacent to and spaced apart from the corresponding set of two adjacent side frames 2.

[0164] That is, in some embodiments, the electronic device 100 may include a plurality of antenna components 1 as described in any of the foregoing embodiments. Thus, it is possible to deploy a plurality of antenna components 1 as described in this application, which have low clearance requirements, thereby greatly alleviating the contradiction between the current requirement of a large number of antennas and the current limited clearance area.

[0165] Among them, such as Figure 23As shown, the number of groups of two adjacent side frames 2 in the electronic device 100 is four, and the number of antenna components 1 can include up to four, which can greatly meet the antenna requirements of the current electronic device 100.

[0166] in, Figure 23 The illustration uses two antenna components 1 as an example. Obviously, the number of antenna components 1 can also be 3 or 4, and so on.

[0167] In some embodiments, when the electronic device 100 includes multiple antenna components 1 as described in any of the foregoing embodiments, at least some of the antenna components 1 support electromagnetic wave signals in different frequency bands. For example, one antenna component 1 supports the reception of electromagnetic wave signals in two frequency bands within the navigation communication frequency band, while another antenna component 1 supports the transmission and reception of electromagnetic wave signals in two frequency bands within the mid-to-high frequency band, and so on.

[0168] In some embodiments, when the electronic device 100 includes multiple antenna components 1 as described in any of the foregoing embodiments, at least some of the antenna components 1 have different structures. For example, the structure of one antenna component 1 is as follows: Figure 1 The structure shown is such that the structure of another antenna component 1 is as follows: Figure 4 The structure shown, etc. Specifically, the structure of the antenna assembly 1 that best matches the component layout requirements of the area where the antenna assembly 1 is located can be determined based on the component layout requirements of the area, and an antenna assembly 1 with a corresponding structure can be installed in that area.

[0169] In some embodiments, such as Figure 13 as well as Figures 21-23 As shown in the figure, the electronic device 100 is a non-foldable electronic device, and the two adjacent side frames 2 are any two adjacent side frames 2 of the electronic device 100.

[0170] That is, in some embodiments, the electronic device 100 is a non-foldable electronic device, and the two adjacent side frames 2 of the antenna assembly 1 can be any two adjacent side frames 2 of the electronic device 100. The antenna assembly 1 can be disposed at a position adjacent to any two adjacent side frames 2 as needed.

[0171] When the electronic device 100 is a non-foldable electronic device, the electronic device 100 can be a candybar mobile phone, tablet computer, or other electronic devices.

[0172] Please see Figure 24 This is a simplified overall schematic diagram of an electronic device 100 in some embodiments of this application. In some embodiments, such as Figure 24As shown, the electronic device 100 is a foldable electronic device, which includes a first body 110 and a second body 120. At least one of the first body 110 and the second body 120 is provided with a display screen 3. The two adjacent side frames 2 are any two adjacent side frames 2 on the first body 110 and / or the second body 120 where the display screen 3 is provided.

[0173] That is, in some embodiments, the electronic device 100 can also be a foldable electronic device. At least one of the first body 110 and the second body 120 of the electronic device 100 is provided with a display screen 3. The two adjacent side frames 2 are any two adjacent side frames 2 on the first body 110 and / or the second body 120 where the display screen 3 is provided, thereby forming a black border area H1 through the gap between them and the display screen 3, which serves as the clearance area for the antenna assembly 1. Therefore, as mentioned above, the two open side surfaces S1 and S2 of the antenna assembly 1 are respectively adjacent to and spaced apart from the two adjacent side frames 2, allowing the electromagnetic wave signals radiated from the open side surfaces S1 and S2 of the antenna assembly 1 / cavity antenna T1 to be conducted to the outside of the electronic device 100 through the black border area H1, thus enabling normal transmission of electromagnetic wave signals and ensuring antenna performance.

[0174] When the electronic device 100 is a foldable electronic device, the electronic device 100 can be a laptop, a foldable mobile phone, or other electronic devices.

[0175] Among them, such as Figure 24 As shown, in some embodiments, the electronic device 100 is a laptop computer, with a display screen 3 on the first body 110 and a keyboard 6 on the second body 120. Therefore, the aforementioned two adjacent side frames 2 refer to any two adjacent side frames 2 on the first body 110, such as... Figure 24 As shown, the antenna assembly 1 may be disposed in the first body 110, and may include at least one, disposed at two adjacent side frames 2 of the corresponding group.

[0176] When the electronic device 100 is a laptop computer, the preset frequency band supported by the antenna assembly 1 can be the WIFI band, Bluetooth band, etc., so as to facilitate WIFI and / or Bluetooth communication.

[0177] Among them, such as Figure 24 As shown, the second body 120 is also provided with a touchpad 61 for users to perform touch input.

[0178] Please see Figure 25 This is a simplified planar schematic diagram of an electronic device 100 in some embodiments of this application. Wherein, as... Figure 25 As shown, the electronic device 100 is a foldable electronic device, and both the first body 110 and the second body 120 are equipped with a display screen 3.

[0179] At this time, the electronic device 100 may be a foldable mobile phone, etc. The aforementioned two adjacent side frames 2 are any two adjacent side frames 2 on the first body 110 and the second body 120. The antenna assembly 1 may be disposed in the first body 110 and / or the second body 120, and may include at least one, disposed at two adjacent side frames 2 of the corresponding group.

[0180] Therefore, for foldable electronic devices with displays 3 on both the first body 110 and the second body 120, the antenna assembly 1 of this application can be set in more locations, which can greatly meet the current antenna quantity requirements in a small clearance environment.

[0181] Among them, such as Figure 25 As shown, when the electronic device 100 is a foldable mobile phone, etc., the electronic device 100 also includes a rotating member 130, and the first body 110 and the second body 120 are rotatably connected through the rotating member 130. The rotating member 130 can be any structure that allows the first body 110 and the second body 120 to be rotatably connected, such as a pivot or hinge.

[0182] Obviously, when the electronic device 100 is a laptop computer, with a display screen 3 on the first body 110 and a keyboard 6 on the second body 120, the first body 110 and the second body 120 are also rotatably connected via corresponding rotating parts, except that the aforementioned Figure 14 There was no indication of it.

[0183] In some embodiments, when the electronic device 100 is a foldable electronic device with a display screen 3 on both the first body 110 and the second body 120, and the antenna assembly 1 includes multiple components, the two antenna assemblies 1 located at corresponding positions on the first body 110 and the second body 120 support different frequency bands. Therefore, when the electronic device 100 is in a folded state, mutual interference can be effectively avoided. The corresponding positions on the first body 110 and the second body 120 refer to the positions where the projections of the foldable electronic device 100 overlap when it is in a folded state.

[0184] The electronic device 100 described in this application can be any electronic device with an antenna, such as a mobile phone, tablet computer, or laptop computer.

[0185] The antenna assembly and electronic device 100 of this application, by forming a cavity antenna T1, can radiate through the side of the opening. Good antenna radiation performance is achieved with only a certain clearance near the side of the opening, thus requiring very little clearance and enabling application in environments with limited clearance. Furthermore, in this application, impedance matching adjustment is achieved through a matching unit 15 coupled between the conductive plate 11, the ground plane 12, and the feed source 14. This allows the cavity antenna T1 to support the reception of electromagnetic wave signals in at least two frequency bands, meeting current multi-band requirements and effectively improving overall communication performance. Furthermore, the cavity antenna T1 of this application has two open sides S1 and S2. The point of maximum electric field is the intersection of the first side B11 and the second side B12. The lengths of the first side B11 and the second side B12 are both equal to λ1 / 4. Thus, the distance between the point of maximum electric field of the cavity antenna T1 and the grounded conductive wall 13 still satisfies λ1 / 4, which satisfies the boundary condition of the minimum size required for electromagnetic oscillation in the first frequency band. At the same time, the length of the side located on the open side only needs to be λ1 / 4, which can effectively reduce the overall size and effectively reduce the space occupied.

[0186] The various embodiments of this application may have different focuses. Some embodiments may not be described in detail, but please refer to the relevant content of other embodiments.

[0187] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Where there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An antenna assembly, characterized in that, The antenna assembly includes: A conductive plate includes a first side, a second side, and at least one first connecting side connecting the first side and the second side, wherein the first side is connected to the second side; A grounding plate is provided parallel to and spaced apart from the conductive plate. The grounding plate includes a third side, a fourth side, and at least one second connecting side connecting the third side and the fourth side. The third side is connected to the fourth side, and the grounding plate is grounded. A conductive wall is connected between the at least one first connecting edge and the at least one second connecting edge, for connecting at least one first connecting edge of the conductive plate to ground; Feed source; A matching unit is coupled between the conductive plate, the ground plane and the feed source, and is used to achieve impedance matching adjustment; Wherein, the first side and the third side are opposite to each other and spaced apart, the second side and the fourth side are opposite to each other and spaced apart, the conductive plate, the ground plane and the conductive wall form a cavity antenna with two open sides, the first side and the third side are two opposite sides of one of the open sides, and the second side and the fourth side are two opposite sides of the other open side; the cavity antenna is used to support the reception of electromagnetic wave signals in at least two frequency bands under the excitation of the feed source and under the impedance matching adjustment of the matching unit.

2. The antenna assembly according to claim 1, characterized in that, The first side includes a first end and a second end opposite to each other, the second side includes a third end and a fourth end opposite to each other, the first end of the first side and the third end of the second side are connected, and at least one first connecting edge is connected between the second end of the first side and the fourth end of the second side; the third side includes a fifth end and a sixth end opposite to each other, the fourth side includes a seventh end and an eighth end opposite to each other, the fifth end of the third side and the seventh end of the fourth side are connected, and at least one second connecting edge is connected between the sixth end of the third side and the eighth end of the fourth side.

3. The antenna assembly according to claim 2, characterized in that, The projections of the first side, the second side, and at least one first connecting side of the conductive plate onto the ground plane coincide with the third side, the fourth side, and at least one second connecting side, respectively.

4. The antenna assembly according to claim 3, characterized in that, The first side and the second side are both straight lines and are perpendicularly connected, the third side and the fourth side are both straight lines and are perpendicularly connected; the number of the at least one first connecting side is at least one, and each first connecting side is a straight line, an arc, or an irregular shape; the number of the at least one second connecting side is at least one, and each second connecting side is a straight line, an arc, or an irregular shape.

5. The antenna assembly according to claim 1, characterized in that, The two frequency bands include a first frequency band and a second frequency band. The first frequency band is lower than the second frequency band. The lengths of the first side and the second side are both equal to λ1 / 4, where λ1 is the wavelength of the electromagnetic wave signal corresponding to the first frequency band.

6. The antenna assembly according to claim 1, characterized in that, The matching unit includes a first matching branch, a second matching branch, and a third matching branch; the first matching branch and the second matching branch are sequentially coupled between the feed source and the conductive plate, and the third matching branch is coupled between the connection node of the first matching branch and the second matching branch and the ground plane. The first matching branch, the second matching branch, and the third matching branch include inductors and / or capacitors.

7. The antenna assembly according to claim 6, characterized in that, The first matching branch includes a first inductor, the second matching branch includes a second inductor and a first capacitor connected in series, and the third matching branch includes a third inductor and a second capacitor connected in series.

8. The antenna assembly according to claim 7, characterized in that, The inductance of the first inductor is 8.2nH, the inductance of the second inductor is 22nH, the capacitance of the first capacitor is 0.5pF, the inductance of the third inductor is 13nH, and the capacitance of the second capacitor is 6.1pF.

9. The antenna assembly according to claim 5, characterized in that, The first frequency band and the second frequency band are two frequency bands in the navigation communication frequency band.

10. The antenna assembly according to any one of claims 1-9, characterized in that, The conductive plate includes a power supply point, and the matching unit is directly connected between the power supply point of the conductive plate, the ground plane, and the power source.

11. The antenna assembly according to any one of claims 1-9, characterized in that, The antenna assembly further includes a feed coupling stub, which is spaced apart from and parallel to the first and / or second sides of the conductive plate and coupled to the conductive plate. The matching unit is connected between the feed coupling stub, the ground plane, and the feed source. The matching unit is coupled to the conductive plate through the feed coupling stub. The feed source couples and excites the cavity antenna through the matching unit and the feed coupling stub. The cavity antenna supports the reception of electromagnetic wave signals in at least two frequency bands under the coupling excitation of the feed source and the impedance matching adjustment of the matching unit.

12. The antenna assembly according to claim 11, characterized in that, The power supply coupling stub is a straight strip, spaced apart from and parallel to the first or second side of the conductive plate, and coupled to the conductive plate.

13. The antenna assembly according to claim 11, characterized in that, The power supply coupling stub is bent and includes a first power supply coupling stub and a second power supply coupling stub. The first power supply coupling stub is spaced apart from and parallel to the first side of the conductive plate, and the second power supply coupling stub is spaced apart from and parallel to the second side of the conductive plate.

14. An electronic device, characterized in that, The electronic device includes an antenna assembly as described in any one of claims 1-13.

15. The electronic device according to claim 14, characterized in that, The electronic device includes two adjacent side frames, and the two open side frames are respectively adjacent to and spaced apart from the two adjacent side frames.

16. The electronic device according to claim 15, characterized in that, The two opening sides are parallel to the two adjacent side frames, respectively.

17. The electronic device according to claim 15, characterized in that, The electronic device also includes a display screen, which has a gap with the side frame to form a black border area, and the projections of the two open sides on the plane of the display screen are located within the black border area.

18. The electronic device according to claim 15, characterized in that, The electronic device includes a motherboard, the motherboard includes a ground plane, the ground plane is electrically connected to the ground plane of the motherboard and grounded, or the ground plane is at least a portion of the ground plane; Alternatively, the electronic device includes a mid-frame, with the ground plane electrically connected to the mid-frame and grounded, or the ground plane is at least a portion of the mid-frame.

19. The electronic device according to any one of claims 15-18, characterized in that, The electronic device is a non-foldable electronic device, and the two adjacent side frames are any two adjacent side frames of the electronic device.

20. The electronic device according to any one of claims 15-18, characterized in that, The electronic device is a foldable electronic device, which includes a first body and a second body. At least one of the first body and the second body is provided with a display screen. The two adjacent side frames are any two adjacent side frames on the first body and / or the second body provided with the display screen.

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