Antenna assembly and electronic device

Abstract

This application provides an antenna assembly including two dielectric substrates and three conductive layers. The first dielectric substrate includes opposing first and second surfaces, and also includes two sides and a first connecting side connecting the two sides. The first conductive layer is disposed on the first surface. The first and second dielectric substrates are disposed opposite each other. The second dielectric substrate includes opposing third and fourth surfaces, and also includes two sides and a second connecting side connecting the two sides. The second conductive layer is disposed on the third surface facing away from the first conductive layer. A conductive connecting layer connects between a first edge of the corresponding first connecting side of the first conductive layer and a second edge of the corresponding second connecting side of the second conductive layer. The first and second conductive layers and the conductive connecting layer form a cavity antenna with two clearance sides for electromagnetic wave signals to pass through. This application also provides an electronic device. This application can ensure antenna performance within 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, electronic devices equipped with such displays have become mainstream. Due to their superior feel and heat dissipation, metal covers have gradually become the mainstream cover material for many electronic devices such as mobile phones, tablets, and even laptops. 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, the antenna assembly including a first dielectric substrate, a first conductive layer, a second dielectric substrate, a second conductive layer, and a conductive connection layer. The first dielectric substrate includes opposing first and second surfaces, and further includes a first side, a second side, and at least one first connecting side connected between the first and second sides, wherein one end of the first side is connected to one end of the second side, and the other end of the first side is connected to the other end of the second side via the at least one first connecting side. The first conductive layer is disposed on the first surface, and the first conductive layer includes a first edge, the first edge being the edge of the first conductive layer corresponding to the at least one first connecting side. The second dielectric substrate is disposed opposite to the first dielectric substrate. The second dielectric substrate includes opposing third and fourth surfaces, and further includes a third side, a fourth side, and at least one second connecting side connecting the third and fourth sides. The third surface is further away from the first dielectric substrate relative to the fourth surface, and the first surface of the first dielectric substrate is further away from the second dielectric substrate relative to the second surface. One end of the third side is connected to one end of the fourth side, and the other end of the third side is connected to the other end of the fourth side via the at least one second connecting side. A second conductive layer is disposed on the third surface, and the second conductive layer includes a second edge, which is the edge of the second conductive layer corresponding to the at least one second connecting side. The conductive connecting layer is connected between the first edge of the first conductive layer and the second edge of the second conductive layer, and is disposed at least on the first connecting side and the second connecting side. The first side is disposed opposite to the third side, and the second side is disposed opposite to the fourth side. The first conductive layer, the second conductive layer, and the conductive connection layer form a cavity antenna with two clearance sides for electromagnetic wave signals to pass through. The first side and the third side are located on one of the clearance sides, and the second side and the fourth side are located on the other clearance side.

[0005] Secondly, an electronic device is also provided, the electronic device including an antenna assembly, the antenna assembly including a first dielectric substrate, a first conductive layer, a second dielectric substrate, a second conductive layer, and a conductive connection layer. The first dielectric substrate includes opposing first and second surfaces, and further includes a first side, a second side, and at least one first connecting side connected between the first side and the second side, wherein one end of the first side is connected to one end of the second side, and the other end of the first side is connected to the other end of the second side through the at least one first connecting side. The first conductive layer is disposed on the first surface, the first conductive layer including a first edge, the first edge being the edge of the first conductive layer corresponding to the at least one first connecting side. The second dielectric substrate is disposed opposite to the first dielectric substrate. The second dielectric substrate includes opposing third and fourth surfaces, and further includes a third side, a fourth side, and at least one second connecting side connecting the third and fourth sides. The third surface is further away from the first dielectric substrate relative to the fourth surface, and the first surface of the first dielectric substrate is further away from the second dielectric substrate relative to the second surface. One end of the third side is connected to one end of the fourth side, and the other end of the third side is connected to the other end of the fourth side via the at least one second connecting side. A second conductive layer is disposed on the third surface, and the second conductive layer includes a second edge, which is the edge of the second conductive layer corresponding to the at least one second connecting side. The conductive connecting layer is connected between the first edge of the first conductive layer and the second edge of the second conductive layer, and is disposed at least on the first connecting side and the second connecting side. The first side is disposed opposite to the third side, and the second side is disposed opposite to the fourth side. The first conductive layer, the second conductive layer, and the conductive connection layer form a cavity antenna with two clearance sides for electromagnetic wave signals to pass through. The first side and the third side are located on one of the clearance sides, and the second side and the fourth side are located on the other clearance side.

[0006] The antenna assembly and electronic device of this application, by forming a cavity antenna with the above-described structure, can radiate through the clearance side. Good antenna radiation performance is achieved with only a certain clearance near the clearance side, thus requiring very little clearance area and enabling application in environments with limited clearance. Furthermore, in the prior art, a typical cavity antenna achieves clearance on one side through an opening or similar means, i.e., it has only one empty side, and this clearance side is rectangular. The point of maximum electric field is located at the midpoint of the long side of the clearance side. To meet the boundary condition of minimum electromagnetic oscillation, the long side of the clearance side needs to be λ / 2, where λ is the wavelength of the electromagnetic wave signal corresponding to the preset frequency band supported by the cavity antenna. This ensures that the distance from the point of maximum electric field to the end of the long side of the clearance side, i.e., to the conductive sidewall, is λ / 4, thus supporting resonance in the preset frequency band. Therefore, the length of the long side of the cavity antenna in the prior art, i.e., the long side located on the clearance side, needs to be at least λ / 2. However, the cavity antenna of this application, due to having two clearance sides, with the first side of the clearance side connected to the second side of the clearance side, and the third side of the clearance side connected to the fourth side of the clearance side, is equivalent to the two clearance sides being connected. This allows the point of maximum electric field to be approximately at the intersection of the two clearance sides S1 and S2, making the required length of each clearance side less than λ / 2, effectively reducing the overall size of the cavity antenna. Furthermore, in this application, since the cavity antenna is formed by setting a conductive layer on a dielectric substrate, the structural stability is improved through the load-bearing capacity of the dielectric substrate. Compared to existing methods that use springs or similar materials to form the conductive sidewalls of the cavity antenna and require further screw fastening, this method effectively improves the performance of the cavity antenna and avoids the use of screws, thus reducing the overall volume. 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 for Figure 1 An exploded view of the antenna assembly shown.

[0010] Figure 3 This is another exploded schematic diagram of the antenna assembly in some embodiments of this application.

[0011] Figure 4 for Figure 1 Another exploded view of the antenna assembly shown.

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

[0013] Figure 6 for Figure 5 The diagram shows an exploded view of the antenna assembly.

[0014] Figure 7 This is yet another simplified schematic diagram of an antenna assembly in some embodiments of this application.

[0015] Figure 8 This is a further structural schematic diagram of an antenna assembly according to some embodiments of this application.

[0016] Figure 9 for Figure 8 The diagram shows an exploded view of the antenna assembly.

[0017] Figure 10 This is a further schematic diagram of the antenna assembly in some embodiments of this application.

[0018] Figure 11 for Figure 10 The diagram shows a structural schematic of an antenna assembly in a modified example.

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

[0020] Figure 13 This is a schematic diagram of the structure of the tuning unit in some embodiments of this application.

[0021] Figure 14 This is a further schematic diagram of the antenna assembly in some embodiments of this application.

[0022] Figure 15 for Figure 14 The diagram shows a structural schematic of an antenna assembly in a modified example.

[0023] Figure 16 This is yet another simple structural diagram of the antenna assembly in some embodiments of this application.

[0024] Figure 17 This is another simplified structural diagram of the antenna assembly in some embodiments of this application.

[0025] Figure 18 This is yet another simplified structural schematic diagram of the antenna assembly in some embodiments of this application.

[0026] Figure 19 This is a simplified structural diagram illustrating a portion of the internal structure of an electronic device in some embodiments of this application.

[0027] Figure 20 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.

[0028] Figure 21 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.

[0029] Figure 22 This is an antenna pattern of an electronic device in some embodiments of this application when the antenna assembly operates in a preset frequency band.

[0030] Figure 23 This is a schematic diagram of the antenna standing wave of the antenna assembly included in some embodiments of the electronic device described in this application.

[0031] Figure 24 This 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.

[0032] Figure 25 This is a schematic side view of a portion of the structure of an electronic device in some embodiments of this application.

[0033] Figure 26 This is a schematic side view of a portion of the structure of an electronic device in some embodiments of this application.

[0034] Figure 27 This is a simplified structural diagram illustrating another portion of the internal structure of an electronic device in some embodiments of this application.

[0035] Figure 28 This is a simplified structural diagram illustrating a portion of the internal structure of an electronic device in some embodiments of this application.

[0036] Figure 29 This is a simplified structural diagram illustrating a portion of the internal structure in some embodiments of this application.

[0037] Figure 30 This is a simplified overall schematic diagram of an electronic device in some embodiments of this application.

[0038] Figure 31 This is a simplified planar schematic diagram of an electronic device in some embodiments of this application. Detailed Implementation

[0039] 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.

[0040] In the description of the embodiments of this invention, it should be understood that the terms "upper," "lower," "thickness," "width," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship 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., where specified. The term "coupling" in this application includes electrical connection, direct connection, or indirect connection, etc. 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. Where 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, and "A and / or B" includes cases with only "A," only "B," or both "A" and "B."

[0041] 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 first dielectric substrate 11, a first conductive layer 12, a second dielectric substrate 13, a second conductive layer 14, and a conductive connection layer 15. The first dielectric substrate 11 includes opposing first surfaces 11a and 11b, and further includes a first side 11c, a second side 11d, and at least one first connecting side 11e connecting the first side 11c and the second side 11d. One end of the first side 11c is connected to one end of the second side 11d, and the other end of the first side 11c is connected to the other end of the second side 11d via the at least one first connecting side 11e. The first conductive layer 12 is disposed on the first surface 11a, and the first conductive layer 12 includes a first edge 12a, which is the edge of the first conductive layer 12 corresponding to the at least one first connecting side 11e. The second dielectric substrate 13 is disposed opposite to the first dielectric substrate 11. The second dielectric substrate 13 includes a third surface 13a and a fourth surface 13b opposite to each other, and also includes a third side 13c, a fourth side 13d, and at least one second connecting side 13e connecting the third side 13c and the fourth side 13d. The third surface 13a is further away from the first dielectric substrate 11 than the fourth surface 13b, and the first surface 11a of the first dielectric substrate 11 is further away from the second dielectric substrate 13 than the second surface 11b. One end of the third side 13c is connected to one end of the fourth side 13d, and the other end of the third side 13c is connected to the other end of the fourth side 13d through the at least one second connecting side 13e. A second conductive layer 14 is disposed on the third surface 13a, and the second conductive layer 14 includes a second edge 14a, which is the edge of the second conductive layer 14 corresponding to the at least one second connecting side. The conductive connection layer 15 is connected between the first edge 12a of the first conductive layer 12 and the second edge 14a of the second conductive layer 14, and is disposed at least on the first connection side 11e and the second connection side 13e. The first side 11c is disposed opposite to the third side 13c, and the second side 11d is disposed opposite to the fourth side 13d. The first conductive layer 12, the second conductive layer 14, and the conductive connection layer 15 form a cavity antenna T1 with two clearance sides S1 and S2 for electromagnetic wave signals to pass through. The first side 11c and the third side 13c are located on one clearance side S1, and the second side 11d and the fourth side 13d are located on the other clearance side S2.

[0042] In this application, the cavity antenna T1 with the aforementioned structure can radiate through the clearance side, requiring only a certain clearance near the clearance side to achieve good antenna radiation performance. This significantly reduces the need for a large clearance area, making it suitable for environments with limited clearance. Furthermore, in the prior art, typical cavity antennas achieve clearance on one side through an opening, resulting in only one empty side. This empty side is rectangular, with the point of maximum electric field located at the midpoint of the long side. To meet the boundary condition of minimum electromagnetic oscillation, the long side of the clearance side needs to be λ / 2, where λ is the wavelength of the electromagnetic wave signal corresponding to the preset frequency band supported by the cavity antenna. This ensures that the distance from the point of maximum electric field to the end of the long side of the clearance side (i.e., to the conductive sidewall) is λ / 4, supporting resonance in the corresponding preset frequency band. Therefore, the length of the long side of the cavity antenna T1 in the prior art, i.e., the long side located on the clearance side, requires a minimum of λ / 2. However, the cavity antenna T1 of this application has two clearance sides S1 and S2, and the first side 11c on the clearance side S1 is connected to the second side 11d on the clearance side S2, for example, at an angle, and the third side 13c on the clearance side S1 is connected to the fourth side 13d on the clearance side S2, for example, at an angle. This is equivalent to the two clearance sides S1 and S2 being connected at an angle, which makes the point of maximum electric field approximately the point where the two clearance sides S1 and S2 intersect. This makes the required length of each clearance side less than λ / 2, effectively reducing the overall size of the cavity antenna. In addition, in this application, since the cavity antenna T1 is formed by setting a conductive layer on a dielectric substrate, the structural stability can be improved through the load-bearing function of the dielectric substrate. Compared with the existing method of forming the conductive sidewalls of the cavity antenna with springs or the like and requiring further screw fastening, this method can effectively improve the performance of the cavity antenna and avoid the use of screws, thus reducing the overall volume.

[0043] In this application, unless otherwise specified, the sides of the first dielectric plate 11, the second dielectric plate 13, etc., refer to non-coplanar sides. Therefore, when one end of the first side 11c is connected to one end of the second side 11d, the first side 11c and the second side 11d are connected at an angle. Similarly, when one end of the third side 13c is connected to one end of the fourth side 13d, the third side 13c is also connected at an angle to the fourth side 13d. Thus, the connection between the first side 11c located on the clearance side S1 and the second side 11d located on the clearance side S2 is also an angled connection, and the connection between the two clearance sides S1 and S2 is also an angled connection.

[0044] in, Figure 1In the image, the guide lines for most of the obscured objects are indicated with dashed lines for clarity.

[0045] In some embodiments, the third surface 13a of the second dielectric plate 13 is further away from the first dielectric plate 11 relative to the fourth surface 13b, and the first surface 11a of the first dielectric plate 11 is further away from the second dielectric plate 13 relative to the second surface 11b. That is, the fourth surface 13b and the second surface 11b of the first dielectric plate 11 face each other, while the third surface 13a of the second dielectric plate 13 and the first surface 11a of the first dielectric plate 11 are disposed opposite to each other. Further, in some embodiments, the second surface 11b of the first dielectric plate 11 faces the second dielectric plate 13, and the fourth surface 13b of the second dielectric plate 13 faces the first dielectric plate 11, thus the fourth surface 13b and the second surface 11b of the first dielectric plate 11 face each other. That is, the first surface 11a of the first dielectric substrate 11 and the third surface 13a of the second dielectric substrate 13 are two opposing surfaces, which are equivalent to the outer surfaces of the first dielectric substrate 11 and the second dielectric substrate 13. Therefore, the first conductive layer 12 and the second conductive layer 14 are respectively provided on two opposing surfaces of the first dielectric substrate 11 and the second dielectric substrate 13, and a cavity antenna T1 is formed at least through the first dielectric substrate 11 and the second dielectric substrate 13.

[0046] In some embodiments, the first dielectric substrate 11 and the second dielectric substrate 13 have a certain thickness. The first surface 11a and the second surface 11b are the two surfaces of the first dielectric substrate 11 with the largest area, and the third surface 13a and the fourth surface 13b are the two surfaces of the second dielectric substrate 13 with the largest area. The thickness direction of the first dielectric substrate 11 is parallel to the direction from the first surface 11a to the second surface 11b, and the thickness direction of the second dielectric substrate 13 is parallel to the direction from the third surface 13a to the fourth surface 13b.

[0047] In this application, the fourth surface 13b and the second surface 11b of the first dielectric plate 11 face each other, which also implies that the first dielectric plate 11 and the second dielectric plate 13 can be arranged along the thickness direction.

[0048] Wherein, the distance between the first conductive layer 12 and the second conductive layer 14 is at least greater than or equal to the sum of the thicknesses of the first dielectric substrate 11 and the second dielectric substrate 13. Thus, at least by the thickness of the first dielectric substrate 11 and the second dielectric substrate 13, the dimension of the cavity antenna T1 in the thickness direction of the dielectric substrate can meet the requirements, that is, the distance between the first conductive layer 12 and the second conductive layer 14 meets the requirements.

[0049] The first dielectric substrate 11 and the second dielectric substrate 13 are located inside the cavity antenna T1. Since the dielectric substrate allows electromagnetic wave signals to pass through, it does not affect the radiation performance of the cavity antenna.

[0050] In some embodiments, the first dielectric plate 11 and the second dielectric plate 13 may be made of non-conductive insulating dielectric materials, such as ceramic materials, glass fiber materials, etc.

[0051] In some embodiments, since the first dielectric substrate 11 and the second dielectric substrate 13 have a certain thickness, each side of the first dielectric substrate 11, including the first side 11c, the second side 11d, and at least one first connecting side 11e connected between the first side 11c and the second side 11d, can refer to each side surface / side surface of the first dielectric substrate 11 having a certain area. Similarly, each side of the second dielectric substrate 13, including the third side 13c, the fourth side 13d, and at least one second connecting side 13e connected between the third side 13c and the fourth side 13d, can also refer to each side surface / side surface of the first dielectric substrate 11 having a certain area. Therefore, the conductive connection layer 15 being disposed at least on the first connecting side 11e and the second connecting side 13e can also mean being disposed at least on the first connecting side 11e of the first dielectric substrate 11 and the second connecting side 13e of the second dielectric substrate 13.

[0052] In some embodiments, the first edge 12a of the first conductive layer 12 corresponding to the edge of the at least one first connecting side 11e may refer to the first edge 12a of the first conductive layer 12 being the edge of the first conductive layer 12 connected to the at least one first connecting side 11e; the second edge 14a of the second conductive layer 14 corresponding to the edge of the at least one second connecting side 13e may also refer to the second edge 14a of the second conductive layer 14 being the edge of the second conductive layer 14 connected to the at least one second connecting side 13e.

[0053] In some embodiments, such as Figure 1As shown, when the conductive connection layer 15 is connected between the first edge 12a of the first conductive layer 12 and the second edge 14a of the second conductive layer 14, it can extend at least through the first connection side 11e and the second connection side 13e and be disposed between the first connection side 11e and the second connection side 13e. The conductive connection layer 15 is connected between the first edge 12a of the first conductive layer 12 and the second edge 14a of the second conductive layer 14, and a conductive sidewall is formed on the side corresponding to at least one first connection side 11e of the first dielectric substrate 11 and at least one second connection side 13e of the second dielectric substrate 13. Furthermore, the sides where the first side 11c and the third side 13c are located, and the sides where the second side 11d and the fourth side 13d are located, form clear sides because the conductive connection layer 15 is not disposed thereon. Therefore, the first conductive layer 12, the second conductive layer 14, and the conductive connection layer 15 form a cavity antenna T1 with two clear sides S1 and S2 for electromagnetic wave signals to pass through.

[0054] In some embodiments, the projection of the first dielectric substrate 11 onto the second dielectric substrate 13, i.e., the projection along the thickness direction onto the second dielectric substrate 13, substantially coincides with the second dielectric substrate 13, and the projection of the first conductive layer 12 onto the second conductive layer 14 also substantially coincides with the second conductive layer 14. The projections of the first side 11c, the second side 11d, and at least one first connecting side 11e of the first dielectric substrate 11 onto the second dielectric substrate 13 substantially coincide with the third side 13c, the fourth side 13d, and at least one second connecting side 13e of the second dielectric substrate 13, which is beneficial for forming a better cavity antenna T1.

[0055] In some embodiments, such as Figure 1 As shown, the first dielectric substrate 11 includes a first side 11c, a second side 11d, and at least one first connecting side 11e connecting the first side 11c and the second side 11d. Each side is a straight strip, and the dimension of each side along the thickness direction of the first dielectric substrate 11 is significantly smaller than the dimension along the length direction of the respective side, for example, less than 1 / 2 of the dimension along the length direction. The second dielectric substrate 13 includes a third side 13c, a fourth side 13d, and at least one second connecting side 13e connecting the third side 13c and the fourth side 13d. Each side is also a straight strip, and the dimension of each side along the thickness direction of the second dielectric substrate 13 is significantly smaller than the dimension along the length direction of the respective side, for example, the dimension of each side along the thickness direction of the second dielectric substrate 13 is less than 1 / 2 of the dimension along the length direction of the side.

[0056] Wherein, the length direction of each side of the first dielectric plate 11 and the second dielectric plate 13 can be the extension direction of each side of the first dielectric plate 11 and the second dielectric plate 13, that is, the direction of each side perpendicular to the thickness direction of the first dielectric plate 11 and the second dielectric plate 13.

[0057] In some embodiments, the first dielectric substrate 11 and the second dielectric substrate 13 primarily serve to support the corresponding conductive layers. For example... Figure 1 As shown, in some embodiments, the first conductive layer 12 further includes a third edge 12b and a fourth edge 12c, and the second conductive layer 14 further includes a fifth edge 14b and a sixth edge 14c. Specifically, the third edge 12b of the first conductive layer 12 corresponds to the edge of the first side 11c, the fourth edge 12c of the first conductive layer 12 corresponds to the edge of the second side 11d, the fifth edge 14b of the second conductive layer 14 corresponds to the edge of the third side 13c of the second dielectric substrate 13, and the sixth edge 14c of the second conductive layer 14 corresponds to the edge of the fourth side 13d of the second dielectric substrate 13. As mentioned above, the first conductive layer 12, the second conductive layer 14, and the conductive connection layer 15 form a cavity antenna T1 with two clearance sides S1 and S2 for electromagnetic wave signals to pass through. At this time, the third edge 12b of the first conductive layer 12 and the fifth edge 14b of the second conductive layer 14 are the edges of two opposite sides of the clearance side S1, and the fourth edge 12c and the sixth edge 14c of the second conductive layer 14 are the edges of two opposite sides of the clearance side S2.

[0058] In this application, either the first conductive layer 12 or the second conductive layer 14 can be used as a feed layer to receive a feed signal, and the other of the first conductive layer 12 and the second conductive layer 14 is used as a ground layer. In this application, the first conductive layer 12 is used as a feed layer and the second conductive layer 14 is used as a ground layer for illustration.

[0059] In some embodiments, the first conductive layer 12 serves as a feed layer for receiving a feed signal, and the cavity antenna T1 is used to support the transmission and reception of electromagnetic wave signals in a preset frequency band under the excitation of the feed signal. The equivalent electrical lengths of the third edge 12b and the fourth edge 12c of the first conductive layer 12 are both equal to λ / 4, where λ is the wavelength corresponding to the electromagnetic wave signal in the preset frequency band. As mentioned above, the third edge 12b of the first conductive layer 12 corresponds to the edge of the first side 11c, and the fourth edge 12c of the first conductive layer 12 corresponds to the edge of the second side 11d.

[0060] Wherein, the third edge 12b of the first conductive layer 12 corresponds to the edge of the first side 11c, and is also equivalent to the edge of the clearance side S1 where the first side 11c is located. The fourth edge 12c of the first conductive layer 12 corresponds to the edge of the second side 11d, and as mentioned above, is also equivalent to the edge of the clearance side S2 where the second side 11d is located. The equivalent electrical lengths of the third edge 12b and the fourth edge 12c of the first conductive layer 12 are both equal to λ / 4, which is equivalent to the equivalent electrical lengths of the edges of the clearance side S1 and the clearance side S2 along their respective length directions being λ / 4.

[0061] As mentioned earlier, in the prior art, a typical cavity antenna achieves clearance on one side through an opening or other means, i.e., it has only one empty side, and the empty side is rectangular. The point of maximum electric field is located at the midpoint of the long side of the empty side. In order to meet the boundary condition of minimum electromagnetic oscillation, the long side of the empty side needs to be λ / 2, so that the distance from the point of maximum electric field to the end of the long side of the empty side, i.e. to the conductive sidewall, is λ / 4, thus supporting resonance in the corresponding frequency band. Therefore, the length of the long side of the cavity antenna T1 in the prior art, i.e., the long side located on the empty side, needs to be at least λ / 2. However, the cavity antenna T1 of this application has two clearance sides S1 and S2, and the two clearance sides S1 and S2 are connected, for example, at an angle. This allows the point of maximum electric field to be approximately the point where the two clearance sides S1 and S2 intersect, for example, the point where the third edge 12b and the second edge 12c of the first conductive layer 12 intersect. This makes the required length of each clearance side less than λ / 2. For example, the equivalent electric length of the edge of each clearance side along the length direction is equal to λ / 4. Thus, the distance from the point of maximum electric field of the cavity antenna T1 to the conductive connection layer 15, which serves as the conductive sidewall, still satisfies λ / 4, satisfying the boundary condition of the minimum size required for electromagnetic oscillation. At the same time, the length of the edge located on the clearance side only needs to be λ / 4, which can effectively reduce the overall size and effectively reduce the space occupied.

[0062] That is, in some embodiments, the cavity antenna T1 of this application, compared with the existing cavity antenna, is equivalent to replacing the existing cavity antenna with two cavity antennas S1 and S2 arranged at an angle, thereby reducing the overall length and the overall size of the cavity antenna T1. In some embodiments, such as Figure 1 As shown, the included angle between the two clearance sides S1 and S2 can be 90°, that is, the two clearance sides S1 and S2 can be connected vertically, thereby reducing the size of the cavity antenna T1 of this application by at least half compared with the existing cavity antennas.

[0063] In this application, the equivalent electrical lengths of the third edge 12b and the fourth edge 12c of the first conductive layer 12 are both equal to λ / 4. This does not mean that they are strictly equal to λ / 4, but a certain deviation is allowed. They can be approximately equal to λ / 4. For example, the equivalent electrical lengths of the first side 11c and the second side 11d can both be values ​​between λ / 4 and λ / 10.

[0064] The equivalent electrical lengths of the third edge 12b and the fourth edge 12c of the first conductive layer 12 can be equal to the physical lengths of the third edge 12b and the fourth edge 12c of the first conductive layer 12, or they can be the equivalent electrical lengths under the corresponding matching elements or matching units. The third edge 12b of the first conductive layer 12 corresponds to the edge of the first side 11c, and the fourth edge 12c of the first conductive layer 12 corresponds to the edge of the second side 11d.

[0065] When the equivalent electrical length of the third edge 12b and the fourth edge 12c of the first conductive layer 12 is equal to the physical length of the third edge 12b and the fourth edge 12c of the first conductive layer 12, the physical length of the third edge 12b and the fourth edge 12c of the first conductive layer 12 is not strictly equal to λ / 4, but is allowed to have a certain deviation, approximately equal to λ / 4 is sufficient. For example, the physical length of the first side 11c and the second side 11d can both be values ​​between λ / 4 and λ / 10.

[0066] When the equivalent electrical length of the third edge 12b and the fourth edge 12c of the first conductive layer 12 is the equivalent electrical length under the corresponding matching element or matching unit, the physical length of the third edge 12b and the fourth edge 12c of the first conductive layer 12 can be selected in a wider range, for example, it can be a value between λ / 4 and λ / 6, and the equivalent electrical length can still be approximately equal to λ / 4 under the matching of the corresponding matching element or matching unit.

[0067] In some embodiments, the third edge 12b of the first conductive layer 12 corresponding to the edge of the first side 11c may refer to the edge of the first conductive layer 12 where the first conductive layer 12 is connected to the first side 11c; the fourth edge 12c of the first conductive layer 12 corresponding to the edge of the second side 11d may also refer to the edge of the first conductive layer 12 where the fourth edge 12c is connected to the second side 11d.

[0068] In some embodiments, the first dielectric plate 11 and the second dielectric plate 13 are spaced apart, or the first dielectric plate 11 and the second dielectric plate 13 are attached together, or the first dielectric plate 11 and the second dielectric plate 13 are integrally formed.

[0069] That is, in some embodiments, the first medium plate 11 and the second medium plate 13 may be spaced apart from each other, or they may be directly attached together, or they may be an integral medium plate, which is only virtually divided into the first medium plate 11 and the second medium plate 13.

[0070] Please refer to the following: Figure 2 , Figure 2 for Figure 1 An exploded view of antenna assembly 1 is shown. Figure 1 and Figure 2 As shown, the antenna assembly 1 further includes a support member 16, which is disposed between the first dielectric substrate 11 and the second dielectric substrate 13. The first dielectric substrate 11 and the second dielectric substrate 13 are spaced apart by the support member 16, and the conductive connection layer 15 is also partially disposed on at least a portion of the side of the support member 16.

[0071] That is, in some embodiments, the first dielectric plate 11 and the second dielectric plate 13 are spaced apart, and the spacer is a support member 16 disposed between the first dielectric plate 11 and the second dielectric plate 13. For example, Figure 1 and Figure 2 The first dielectric substrate 11, the support member 16, and the second dielectric substrate 13 can be stacked sequentially. Therefore, the support member 16 ensures the structural stability of the cavity antenna T1. Furthermore, when the combined thickness of the first dielectric substrate 11 and the second dielectric substrate 13 is relatively small, adding the support member 16 increases the distance between the first conductive layer 12 and the second conductive layer 14, thereby increasing the thickness dimension of the cavity antenna T1 and ensuring that the thickness dimension of the cavity antenna T1 meets the requirements. In addition, adding the support member 16 allows for more flexible design of the first dielectric substrate 11 and the second dielectric substrate 13.

[0072] In some embodiments, the support member 16 may also be made of a non-conductive insulating dielectric material, such as ceramic material, glass fiber material, etc.

[0073] In some embodiments, such as Figure 2As shown, the support member 16 includes a support frame 161, the support frame 161 includes at least one support frame strip 161a, the at least one support frame strip 161a includes at least one target support frame strip 161a1 corresponding to the at least one first connecting side 11e and the at least one second connecting side 13e, and the conductive connection layer 15 is also partially disposed on the side of the at least one target support frame strip 161a1.

[0074] That is, in some embodiments, the support member 16 may be a support frame 161, and the support frame 161 includes at least one target support frame strip 161a1 corresponding to at least one first connecting side 11e and at least one second connecting side 13e. When the conductive connection layer 15 is connected between the first edge 12a of the first conductive layer 12 and the second edge 14a of the second conductive layer 14, it also extends through the side of the at least one target support frame strip 161a1, so that the conductive connection layer 15 is also partially disposed on the side of the at least one target support frame strip 161a1.

[0075] Therefore, when the first dielectric plate 11 and the second dielectric plate 13 are spaced apart by the support member 16, the at least one first connecting side 11e and the at least one second connecting side 13e can still be completely covered by the conductive connecting layer 15, so that electromagnetic wave signals are only allowed to be transmitted through the two clear sides S1 and S2, which meets the structural requirements of the cavity antenna T1 and effectively ensures the radiation performance of the cavity antenna T1.

[0076] In some embodiments, the at least one target support frame 161a1 corresponds to the at least one first connecting side 11e and the at least one second connecting side 13e. This can mean that the projections of the side of the at least one target support frame 161a1 and the at least one first connecting side 11e and the at least one second connecting side 13e along the stacking direction of the first dielectric plate 11, the support member 16, and the second dielectric plate 13 can substantially coincide. Therefore, the side of the at least one target support frame 161a1 is substantially coplanar with the at least one first connecting side 11e and the at least one second connecting side 13e. The conductive connection layer 15 is disposed on the coplanar side of the target support frame 161a1 and the at least one first connecting side 11e and the at least one second connecting side 13e, which is beneficial for improving structural stability.

[0077] The support member 16 is in the form of a support frame 161, and the area surrounded by the support member 16 is a hollow area. Therefore, the cavity antenna T1 also has a hollow area without dielectric material, which is beneficial to improving radiation performance.

[0078] In some embodiments, such as Figure 2 As shown, the support frame 161 is a closed annular frame, and the at least one support frame strip 161a includes multiple strips. The at least one support frame strip 161a also includes support frame strips 161a corresponding to the first side 11c and the third side 13c, and support frame strips 161a corresponding to the second side 11d and the fourth side 13d. Multiple support frame strips 161a are connected to form the closed annular frame.

[0079] That is, in some embodiments, the at least one support frame strip 161a includes at least one target support frame strip 161a1 corresponding to the at least one first connecting side 11e and the at least one second connecting side 13e, and also includes support frame strips 161a corresponding to the first side 11c and the third side 13c and support frame strips 161a corresponding to the second side 11d and the fourth side 13d, and these support frame strips 161a are connected end to end to form a closed annular frame. Therefore, the support frame 161 can better support the first dielectric plate 11 and the second dielectric plate 13. Since the conductive connection layer 15 is only provided on the side of the at least one target support frame strip 161a1, the support frame strip 161a corresponding to the first side 11c and the third side 13c, and the support frame strip 161a corresponding to the second side 11d and the fourth side 13d, are not provided with conductive layers. Therefore, the clearance side S1 where the first side 11c and the third side 13c are located and the clearance side S2 of the second side 11d and the fourth side 13d can still form a complete clearance side, which will not affect the radiation performance of the cavity antenna T1.

[0080] Wherein, since the at least one target support frame 161a1 has a certain size in the stacking direction, the side of the at least one target support frame 161a1 also refers to the side surface / side surface of the at least one target support frame 161a1 with a certain area.

[0081] in, Figure 2 The main purpose of this illustration is to more clearly show the structure of the support member 16; some components or component symbols are relative to... Figure 1 Some omissions have been made.

[0082] Please see Figure 3 This is another exploded schematic diagram of antenna assembly 1 in some embodiments of this application.

[0083] In some embodiments, such as Figure 3As shown, the support frame 161 includes more than one target support frame strip 161a1, for example, two or more. In this case, the support frame 161 may only include at least one target support frame strip 161a1 corresponding to the at least one first connecting side 11e and the at least one second connecting side 13e. In this case, at least two target support frame strips 161a1 can effectively support the first dielectric plate 11 and the second dielectric plate 13, and the side of at least one target support frame strip 161a1 can be used to mount the conductive connection layer 15, still ensuring the stability of the conductive connection layer 15. Reducing the number of support frame strips helps reduce costs and also allows the formation of hollow areas in the clearance side S1 and clearance side S2, which can improve radiation performance to a certain extent.

[0084] Obviously, in some embodiments, the support frame 161 may include, in addition to the at least one target support frame strip 161a1, a support frame strip 161a corresponding to the first side 11c and the third side 13c, or a support frame strip 161a corresponding to the second side 11d and the fourth side 13d, but does not form a closed annular frame.

[0085] Please see Figure 4 ,for Figure 1 Another exploded view of antenna assembly 1 shown.

[0086] In some embodiments, such as Figure 4 As shown, the support member 16 includes a support plate 162, the support plate 162 includes at least one target side 162a, the at least one target side 162a corresponds to the at least one first connecting side 11e and the at least one second connecting side 13e, and the conductive connection layer 15 is also partially disposed on at least one target side 162a of the support plate 162.

[0087] That is, in some embodiments, the support member 16 may also be plate-shaped, and the support plate 162 is disposed between the first medium plate 11 and the second medium plate 13, so that the first medium plate 11, the support plate 162 and the second medium plate 13 are stacked in sequence, and the first medium plate 11 and the second medium plate 13 are separated by the support plate 162.

[0088] Therefore, in some embodiments, the support member 16 is plate-shaped, which can effectively improve the support stability of the first medium plate 11 and the second medium plate 13 and improve the stability of the overall structure.

[0089] In some embodiments, the at least one target side 162a corresponds to the at least one first connecting side 11e and the at least one second connecting side 13e. This can mean that the projections of the at least one target side 162a, the at least one first connecting side 11e, and the at least one second connecting side 13e along the stacking direction of the first dielectric plate 11, the support member 16, and the second dielectric plate 13 can substantially coincide. Therefore, the at least one target side 162a, the at least one first connecting side 11e, and the at least one second connecting side 13e are substantially coplanar, and the conductive connection layer 15 is disposed on the coplanar at least one target side 162a, the at least one first connecting side 11e, and the at least one second connecting side 13e, which is beneficial for improving structural stability.

[0090] In some embodiments, when the antenna assembly 1 further includes the support member 16 in any of the foregoing embodiments, the support member 16 in any of the foregoing embodiments may also be provided with functional devices, including matching devices.

[0091] Therefore, in some embodiments, while the support member 16 provides support, certain matching devices can also be set, which is conducive to achieving a compact structure and thus reducing the overall volume.

[0092] In some embodiments, the matching device is used to connect to the first conductive layer 12, which serves as a feed layer, such that the electrical lengths of the third edge 12b and the fourth edge 12c of the first conductive layer 12 meet the requirements, for example, approximately equal to λ / 4.

[0093] In some embodiments, the functional device may further include devices such as power supply connectors, and the matching device may be electrically connected to the first conductive layer 12, which serves as the power supply layer, through the power supply connectors. The power supply connectors may include conductive lines such as coaxial lines and microstrip lines, or electrical connectors such as metal springs.

[0094] Since the support plate 162 has a certain thickness, the at least one target side 162a also refers to a side surface / side surface with a certain area.

[0095] In some embodiments, the support member 16 is disposed between the first medium plate 11 and the second medium plate 13, and can be fixed to the first medium plate 11 and the second medium plate 13 by adhesive bonding or by snap-fitting.

[0096] In some embodiments, functional devices installed on the support member 16, such as matching devices, can be connected to the first conductive layer 12 and / or the second conductive layer 14 through conductive through holes, conductive half holes, or side copper-plated structures provided in the first dielectric plate 11 and / or the second dielectric plate 13, thereby realizing corresponding functions, such as matching adjustment functions.

[0097] Since the functional devices occupy a small space, the interior of the cavity antenna T1 is mostly empty space, thus having little impact on the radiation performance of the cavity antenna T1.

[0098] Please refer to the following: Figure 5 and Figure 6 , Figure 5 This is another simplified schematic diagram of antenna assembly 1 in some embodiments of this application. Figure 6 for Figure 5 The diagram shows an exploded view of antenna assembly 1.

[0099] like Figure 5 and Figure 6 As shown, in some embodiments, the first dielectric substrate 11 and the second dielectric substrate 13 are bonded together, the second surface 11b of the first dielectric substrate 11 and the fourth surface 13b of the second dielectric substrate 13 are facing each other and bonded together, and the conductive connection layer 15 is connected between the first edge 12a of the first conductive layer 12 and the second edge 14a of the second conductive layer 14, and is disposed on the first connection side 11e and the second connection side 13e.

[0100] That is, in some embodiments, the first dielectric plate 11 and the second dielectric plate 13 can be directly stacked together, that is, the second surface 11b of the first dielectric plate 11 and the fourth surface 13b of the second dielectric plate 13 face each other and are attached together, thereby ensuring the stability of the structure. Since the conductive connection layer 15 is only disposed on the first connection side 11e and the second connection side 13e, and the first side 11c and the second side 11d of the first dielectric plate 11 and the third side 13c and the fourth side 13d of the second dielectric plate 13 are not provided with conductive layers, the first side 11c and the third side 13c form the clear side surface S1, and the second side 11d and the fourth side 13d form the clear side surface S2.

[0101] In some embodiments, when the first dielectric plate 11 and the second dielectric plate 13 are directly stacked together, the clearance side S1 can be approximately equal to the sum of the first connecting side 11e and the second connecting side 13e, and the clearance side S2 can be approximately equal to the sum of the second side 11d and the fourth side 13d.

[0102] In some embodiments, when the first medium plate 11 and the second medium plate 13 are directly stacked together, the first medium plate 11 and the second medium plate 13 can also be fixed together by adhesive or by snap-fitting.

[0103] Please refer to the following: Figure 7 This is yet another simplified schematic diagram of antenna assembly 1 in some embodiments of this application.

[0104] In some embodiments, such as Figure 7 As shown, the first dielectric substrate 11 and the second dielectric substrate 13 are integral dielectric substrate 113. The first surface 11a of the first dielectric substrate 11 and the third surface 13a of the second dielectric substrate 13 are two opposite surfaces of the integral dielectric substrate. The conductive connection layer 15 is connected between the first edge 12a of the first conductive layer 12 and the second edge 14a of the second conductive layer 14, and is disposed on the first connection side 11e and the second connection side 13e.

[0105] That is, in some embodiments, the first dielectric substrate 11 and the second dielectric substrate 13 are an integral dielectric substrate 113, that is, an integral dielectric substrate, and a cavity antenna T1 with two clearance sides S1 and S2 for electromagnetic wave signals to pass through is formed by disposing a corresponding conductive layer on the integral dielectric substrate.

[0106] Therefore, since there is only one integrated dielectric plate 113, the stability of the structure can be improved and the manufacturing process can be simplified.

[0107] In some embodiments, when the first dielectric substrate 11 and the second dielectric substrate 13 are integral dielectric substrate 113, the aforementioned first dielectric substrate 11 and the second dielectric substrate 13 may be two virtually divided dielectric substrates, and the first surface 11a of the first dielectric substrate 11 and the third surface 13a of the second dielectric substrate 13 are two opposing surfaces of the integral dielectric substrate. The first side 11c of the first dielectric substrate 11 and the third side 13c of the second dielectric substrate 13 integrally form one side of the integral dielectric substrate, and the second side 11d of the first dielectric substrate 11 and the fourth side 13d of the second dielectric substrate 13 integrally form the other side of the integral dielectric substrate. The first connecting side 11e and the second connecting side 13e integrally form at least one connecting side connecting the aforementioned two sides.

[0108] In this application, the integral dielectric substrate 113 mainly refers to a one-piece molded structure, or a structure manufactured in one step through a process, and does not mean that the integral dielectric substrate 113 only includes a single-layer dielectric substrate structure.

[0109] In some embodiments, the integrated dielectric substrate 113 may be a circuit board with a multilayer structure, wherein the first dielectric substrate 11 and the second dielectric substrate 13 are two layers of the integrated dielectric substrate, and the integrated dielectric substrate further includes a carrier plate disposed between the first dielectric substrate 11 and the second dielectric substrate 13, the carrier plate being used to mount corresponding functional devices, the functional devices including matching devices.

[0110] That is, in some embodiments, the integrated dielectric substrate 113 may also be an integrated circuit board including a multi-layer structure. Furthermore, the integrated dielectric substrate also includes a support plate disposed between the first dielectric substrate 11 and the second dielectric substrate 13. The support plate is used to mount corresponding functional devices, which helps to achieve a compact structure and thus reduces the overall volume.

[0111] In some embodiments, the matching device can also be used to connect to the first conductive layer 12, which serves as a feed layer, such that the electrical lengths of the third edge 12b and the fourth edge 12c of the first conductive layer 12 meet the requirements, for example, approximately equal to λ / 4.

[0112] In some embodiments, the functional device may also include devices such as power supply connectors, and the matching device may be electrically connected to the first conductive layer 12, which serves as the power supply layer, through the power supply connectors.

[0113] In some embodiments, when the integrated dielectric substrate 113 is a circuit board with a multilayer structure and further includes a carrier plate disposed between the first dielectric substrate 11 and the second dielectric substrate 13, functional devices mounted on the carrier plate, such as matching devices, can be connected to the first conductive layer 12 and / or the second conductive layer 14 through conductive vias, conductive half-holes, or side-plated copper structures provided in the first dielectric substrate 11 and / or the second dielectric substrate 13 to achieve corresponding functions, such as matching adjustment functions. Similarly, since the functional devices occupy a small space, the interior of the cavity antenna T1 is mostly empty space, thus having little impact on the radiation performance of the cavity antenna T1.

[0114] Wherein, when the integrated dielectric substrate 113 further includes a support plate disposed between the first dielectric substrate 11 and the second dielectric substrate 13, the structure of the integrated dielectric substrate 113 can be consistent with... Figure 1 as well as Figure 4 The first medium plate 11, the second medium plate 13 and the support member 16 shown have similar structures. The bearing plate can be similar to the support member 16 and is disposed between the first medium plate 11 and the second medium plate 13.

[0115] In this embodiment, when the integrated dielectric substrate 113 includes a multi-layer circuit board, the multi-layer circuit board can be a pre-manufactured integrated structure.

[0116] In some embodiments, the integrated dielectric substrate 113 may also consist of only a dielectric substrate, that is, it may be made entirely of dielectric material, which is beneficial to ensuring the performance of the cavity antenna T1.

[0117] In some embodiments, the central region of the integrated dielectric substrate 113 can also be hollowed out to form a hollow region, thereby improving the performance of the cavity antenna T1.

[0118] Please refer to the following: Figure 8 and Figure 9 , Figure 8 This is a further structural schematic diagram of antenna assembly 1 according to some embodiments of this application. Figure 9 for Figure 8 The diagram shows an exploded view of antenna assembly 1.

[0119] In some embodiments, such as Figure 8As shown, the first conductive layer 12 is provided with a feed point F1 and serves as a feed layer, and the second conductive layer 14 is used to connect to the ground and serves as a ground layer. At least the first conductive layer 12 and the first dielectric substrate 11 have a notch Q1 to form a receiving space. The receiving space is used to accommodate corresponding functional devices. The functional devices are mounted on the first dielectric substrate 11 and / or the second dielectric substrate 13. The functional devices include matching devices.

[0120] That is, in some embodiments, when the antenna assembly 1 further includes functional devices such as matching devices, at least the first conductive layer 12 and the first dielectric substrate 11 have notches Q1 to form a receiving space to accommodate functional devices such as matching devices.

[0121] In some embodiments, the notch Q1 is formed on one side of the clearance side S1 or on one side of the clearance side S2. Figure 8 and Figure 9 The illustration is given by taking the opening Q1 on one side of the clearance side S1 as an example.

[0122] in, Figure 8 and Figure 9 The antenna assembly 1 in the middle is based on the structure of the antenna assembly 1 including the support member 16, and the notch Q1 is further opened, that is, in order to allow for the notch Q1 to be opened in the middle. Figure 1 and Figure 2 The notch Q1 is further formed on the structure of the antenna assembly 1 shown. Obviously, when the antenna assembly 1 also includes functional devices such as matching devices, the notch Q1 can be formed in the antenna assembly 1 in any of the foregoing embodiments.

[0123] In some embodiments, such as Figure 8 and Figure 9 The notch Q1 also penetrates the support member 16, that is, the notch Q1 is formed on the first conductive layer 12, the first dielectric plate 11 and the support member 16.

[0124] In some embodiments, the notch Q1 may be formed only on the first conductive layer 12 and the first dielectric plate 11, or the notch Q1 may further penetrate a portion of the second dielectric plate 13. The notch Q1 may be formed on the first conductive layer 12, the first dielectric plate 11, the support member 16, and the second dielectric plate 13.

[0125] In some embodiments, when the antenna assembly 1 does not include matching devices, that is, when the equivalent electrical length of the third edge 12b and the fourth edge 12c of the first conductive layer 12 is equal to the physical length of the third edge 12b and the fourth edge 12c of the first conductive layer 12, the antenna assembly 1 may not have the notch Q1.

[0126] In some embodiments, such as Figure 1 As shown in the figure, the first conductive layer 12 is provided with a feed point F1 and serves as a feed layer. The antenna assembly 1 also includes a feed source 17, which is coupled to the first conductive layer 12 and is used to provide the feed signal to the first conductive layer 12.

[0127] In this application, the feed source 17 is specifically used to provide a feed signal. The feed signal provided by the feed source 17 is transmitted to the cavity of the cavity antenna T1, forming a periodically oscillating electromagnetic wave signal in the cavity, that is, forming a periodically oscillating electromagnetic wave signal in a preset frequency band, and supporting the transmission and reception of the electromagnetic wave signal in the preset frequency band.

[0128] Please see Figure 10 This is a further structural schematic diagram of the antenna assembly 1 in some embodiments of this application.

[0129] In some embodiments, such as Figure 10 As shown, the antenna assembly 1 further includes a matching unit 18, which is coupled between the first conductive layer 12 and the feed source 17 to achieve impedance matching adjustment.

[0130] That is, in some embodiments, the antenna assembly 1 further includes a matching unit 18, which is used to achieve impedance matching adjustment. Thus, in some embodiments, the equivalent electrical length of the third edge 12b and the fourth edge 12c of the first conductive layer 12 is the equivalent electrical length under the matching of the matching unit 18.

[0131] Therefore, in some embodiments, the feed source 17 is connected to the first conductive layer 12 through the matching unit 18, and the first conductive layer 12 is excited after impedance matching adjustment by the matching unit 18, so as to excite the cavity antenna T1 to support the reception of electromagnetic wave signals in the preset frequency band.

[0132] In some embodiments, when the antenna assembly 1 further includes a matching unit 18, the aforementioned matching device may include the device in the matching unit 18.

[0133] In some embodiments, the first conductive layer 12 is provided with a feed point F1 and serves as a feed layer, and the second conductive layer 14 is used to connect to ground and serves as a ground layer.

[0134] Please see Figure 11 ,for Figure 10 The diagram shows a structural schematic of antenna assembly 1 in a modified example.

[0135] In some embodiments, such as Figure 11As shown, the matching unit 18 is connected between the feed point F1 and the feed source 17, and is also connected to the ground layer / second conductive layer 14.

[0136] That is, in some embodiments, the first conductive layer 12 includes a feed point F1, and the matching unit 18 may specifically be coupled between the feed point F1 of the first conductive layer 12 and the feed source 17, and is also connected to the second conductive layer 14. The feed source 17 is directly connected to the feed point F1 of the first conductive layer 12 through the matching unit 18, and the first conductive layer 12 is excited after impedance matching adjustment by the matching unit 18, so that the cavity antenna T1 can at least support the reception of electromagnetic wave signals in the preset frequency band. That is, in some embodiments, such as Figure 11 As shown, compared to Figure 10 The structure of the antenna assembly 1 shown is such that the matching unit 18 can be further connected to the ground layer / second conductive layer 14.

[0137] In some embodiments, the matching unit 18 may include three connection terminals, which are respectively connected to the feed point F1 of the first conductive layer 12, the second conductive layer 14, and the feed source 17. In this case, the matching unit 18 may include a matching device connected to the ground layer / second conductive layer 14, and may also include a matching device connected between the feed point F1 of the first conductive layer 12 and the feed source 17, thereby improving the matching performance.

[0138] In some embodiments, when the matching unit 18 is not included, the feed source 17 can also be directly connected to the feed point F1 of the first conductive layer 12, and output a feed signal to the feed point F1 of the first conductive layer 12 to excite the cavity antenna T1 to at least support the reception of electromagnetic wave signals in the preset frequency band. That is, in this case, the feed source 17 is directly connected to the feed point F1 of the first conductive layer 12 to realize the feed point, without being connected to the second conductive layer 14.

[0139] In some embodiments, the feed point F1 can be located at any position on the first conductive layer 12. For example, the feed point F1 can be located at any position on the third edge 12b of the first conductive layer 12, or at a position close to the third edge 12b where its projection onto the third edge 12b is located on the third edge 12b. Alternatively, the feed point F1 can be located at the fourth edge 12c of the first conductive layer 12, or at a position close to the fourth edge 12c where its projection onto the fourth edge 12c is located on the fourth edge 12c. In some embodiments, the feed point F1 can also be located near the center of the first conductive layer 12. In some embodiments, the perpendicular distance between the feed point F1 and the conductive connection layer 15 along the extending direction of the third edge 12b or the fourth edge 12c can be 1 / 3, 1 / 2, or 2 / 3 of the length of the third edge 12b or the fourth edge 12c. Figure 10 as well as Figure 11 The diagram illustrates an example where the power supply point F1 is located near the third edge 12b and its projection onto the third edge 12b is located on the third edge 12b.

[0140] Since the third edge 12b and the fourth edge 12c of the first conductive layer 12 are the edges of the two clear sides S1 and S2 respectively, and do not directly contact the second conductive layer 14 which serves as the ground layer, they are essentially free ends. The first edge 12a of the first conductive layer 12 is grounded by connecting to the second conductive layer 14, which serves as the ground layer, through the conductive connection layer 15, effectively acting as a ground end. The first conductive layer 12 is connected to the feed source 17 through the feed point F1, forming a structure similar to an inverted F antenna (IFA). Therefore, it can operate in the preset frequency band under the excitation of the feed source 17 and the impedance matching adjustment of the matching unit 18. Furthermore, since the equivalent electrical lengths of the third edge 12b and the fourth edge 12c of the first conductive layer 12 are both equal to λ / 4, the cavity antenna T1 can oscillate entirely within the preset frequency band, supporting the transmission and reception of electromagnetic wave signals in the preset frequency band under the excitation of the feed source 17.

[0141] The matching unit 18 may include a capacitor and / or an inductor. For example, the matching unit 18 may include an inductor and a capacitor connected in parallel, or an inductor and a capacitor connected in series, or an inductor and a capacitor connected in parallel and then connected in series with an inductor or a capacitor, or it may also be a series branch of a capacitor and an inductor connected in series and a capacitor or / or an inductor connected in parallel, etc.

[0142] in, Figure 10 as well as Figure 11 In order to be in Figure 1 The example shown is an antenna assembly 1 with the matching unit 18 further added. Clearly, the matching unit 18 can be further added to the antenna assembly 1 in any of the aforementioned embodiments.

[0143] In some embodiments, the matching unit 18 is an adjustable matching unit, and the matching parameter value of the matching unit 18 is adjustable so that the preset frequency band supported by the cavity antenna T1 under the excitation of the feed signal is adjustable.

[0144] That is, in some embodiments, the matching parameter value of the matching unit 18 is adjustable, and when the matching parameter value of the matching unit 18 is different, the preset frequency band in which the cavity antenna T1 resonates may be different. Thus, the preset frequency band can be adjusted by adjusting the matching parameter value of the matching unit 18.

[0145] For example, in some embodiments, the matching unit 18 may include multiple matching branches, each of which includes a matching element / matching device and a matching switch connected in series. The matching elements in different matching branches have different types and / or different matching parameter values. They can be turned on by different matching switches, thereby changing the overall matching parameter value of the matching unit 18, so that the cavity antenna T1 supports different preset frequency bands under the excitation of the feed signal.

[0146] When the matching parameter values ​​of the matching unit 18 are different, the equivalent electrical lengths of the third edge 12b and the fourth edge 12c of the first conductive layer 12 under the matching of the matching unit 18 are different, thereby making the cavity antenna T1 support different preset frequency bands for resonance, that is, making the cavity antenna T1 support different preset frequency bands under the excitation of the feed signal.

[0147] The matching element may include a capacitor and / or an inductor, and the matching parameter value may include a capacitance value and / or an inductance value.

[0148] Therefore, in some embodiments, when the matching unit 18 is an adjustable matching unit, the equivalent electrical lengths of the third edge 12b and the fourth edge 12c of the first conductive layer 12 can be adjusted, so that the cavity antenna T1 supports different preset frequency bands under the excitation of the feed signal, thereby widening the bandwidth of the cavity antenna T1.

[0149] Please see Figure 12 This is a further structural schematic diagram of the antenna assembly 1 in some embodiments of this application.

[0150] In some embodiments, the first conductive layer 12 is provided with a feed point F1 as a feed layer, the second conductive layer 14 is used to connect to ground as a ground layer, and the first conductive layer 12 is also provided with a tuning point P1, which is spaced apart from the feed point F1.

[0151] In some embodiments, such as Figure 12 As shown, the antenna assembly 1 further includes a tuning unit 19, which is connected between the tuning point P1 and the second conductive layer 14.

[0152] The tuning unit 19 can present corresponding tuning parameter values, and the tuning parameter values ​​presented by the tuning unit 19 are adjustable. Depending on the different tuning parameter values ​​of the tuning unit 19, the cavity antenna T1 supports different preset frequency bands under the excitation of the feed signal.

[0153] The tuning unit 19 primarily functions as a matching tuner. When the tuning parameter values ​​presented by the tuning unit 19 are different, the equivalent electrical lengths of the third edge 12b and the fourth edge 12c of the first conductive layer 12 will also be different, thereby causing the cavity antenna T1 to support different preset resonant frequency bands, that is, causing the cavity antenna T1 to support different preset frequency bands under the excitation of the feed signal.

[0154] Therefore, in some embodiments, the first conductive layer 12 is also provided with a tuning point P1 spaced apart from the feed point F1, and the tuning unit 19 is connected between the tuning point P1 and the second conductive layer 14, which can also effectively realize the adjustment of the preset frequency band, thereby widening the bandwidth of the cavity antenna T1.

[0155] In some embodiments, the tuning point P1 can also be located at any position on the first conductive layer 12. For example, the tuning point P1 can be located at any position on the third edge 12b of the first conductive layer 12, or at a position close to the third edge 12b and whose projection on the third edge 12b is located on the third edge 12b. Alternatively, the tuning point P1 can be located at the fourth edge 12c of the first conductive layer 12, or at a position close to the fourth edge 12c of the first conductive layer 12 and whose projection on the fourth edge 12c is located on the fourth edge 12c, as long as it is spaced apart from the feed point F1. Figure 12 The example shown is that the tuning point P1 is located near the fourth edge 12c of the first conductive layer 12, and its projection on the fourth edge 12c is located at the position of the fourth edge 12c.

[0156] Figure 12 In order to be in Figure 1 The diagram illustrates an example of adding the tuning unit 19 to the structure of the antenna assembly 1 shown. Clearly, the tuning unit 19 can be further added to the antenna assembly 1 in any of the aforementioned embodiments.

[0157] Please see Figure 13 This is a schematic diagram of the structure of the tuning unit 19 in some embodiments of this application.

[0158] like Figure 13 As shown, in some embodiments, the tuning unit 19 may include a plurality of matching branches 191 electrically connected between the tuning point P1 and the second conductive layer 14, which serves as a ground layer. At least some of the matching branches 191 have different matching parameter values, and each matching branch 191 may be in an enabled or disabled state. Depending on the different matching branches 191 in the tuning unit 19 that are in the enabled state or the different number of matching branches 191 in the enabled state, the tuning unit 19 as a whole presents different matching parameter values.

[0159] The matching parameter values ​​may include capacitance and / or inductance values, and the overall matching parameter values ​​of the tuning unit 19 may be the impedance values ​​of the tuning unit 19 as a whole, formed by capacitance and / or inductance values.

[0160] When the overall matching parameter values ​​of the tuning unit 19 are different, better impedance matching of different frequency bands can be achieved, thereby realizing the adjustment of the preset frequency band.

[0161] In some embodiments, such as Figure 13 As shown, the tuning unit 19 further includes a switch module 192, wherein the switch module 192 is connected between the plurality of matching branches 191 and the second conductive layer 14 serving as a ground layer, and the plurality of matching branches 191 are connected in parallel between the tuning point P1 and the switch module 192; or, the switch module 192 is connected between the plurality of matching branches 191 and the tuning point P1, and the plurality of matching branches 191 are connected in parallel between the switch module 192 and the second conductive layer 14 serving as a ground layer. The switching module 192 is used to connect the corresponding matching branch 191 to the tuning point P1 and the second conductive layer 14, which serves as the ground layer, thereby enabling the corresponding matching branch 191. Each matching branch 191 includes a matching element M1, which includes a capacitor or an inductor. By connecting different matching branches 191 to the tuning point P1 and the second conductive layer 14, which serves as the ground layer, the enabled matching branch 191 can be switched.

[0162] in, Figure 13 The example shown is that the switch module 192 is connected between the plurality of matching branches 191 and the second conductive layer 14, which serves as a ground layer, and the plurality of matching branches 191 are connected in parallel between the switch module 192 and the tuning point P1.

[0163] like Figure 13 As shown, in some embodiments, the switch module 192 may include a plurality of matching switches M2, each matching switch M2 corresponding to a plurality of matching branches 191, and each matching switch M2 being connected in series with a matching element M1 of the corresponding matching branch 191. In some embodiments, the matching branch 191 in the enabled state is switched according to the switching of the on and off states of the matching switches M2.

[0164] That is, in some embodiments, such as Figure 13 As shown, the switch module 192 may include multiple matching switches M2. Each matching switch M2 and the matching element M1 of the corresponding matching branch 191 are connected in series between the tuning point P1 and the second conductive layer 14, which serves as the ground layer. The matching parameter values ​​of the matching element M1 in different matching branches 191 are different. When the matching switch M2 corresponding to a certain matching branch 191 is turned on, the electrical connection between the matching branch 191 and the tuning point P1 and the second conductive layer 14, which serves as the ground layer, is made on, and the matching element M1 is in an enabled state. The matching element M1 is electrically connected between the tuning point P1 and the second conductive layer 14, which serves as the ground layer, and presents a corresponding matching parameter value. When the matching switch M2 corresponding to the matching branch 191 is turned off, the branch where the matching branch 191 is located is disconnected, and the matching branch 191 is in a disabled state.

[0165] The matching element M1 may also include a capacitor and / or an inductor, and the matching parameter value of the matching element M1 may include a capacitance value and / or an inductance value.

[0166] The different matching parameter values ​​of the matching element M1 in different matching branches 191 include the different types and / or different parameter values ​​of the matching element M1 in different matching branches 191.

[0167] For example, the matching element M1 of one matching branch 191 includes a capacitor, the matching element M1 of another matching branch 191 includes an inductor, and the matching element M1 of yet another matching branch 191 also includes a capacitor, but the capacitance value is different from that of the capacitors included in the other matching branches, and so on.

[0168] In some embodiments, the matching element M1 may include a single element or multiple elements, such as a single capacitor or inductor, or multiple capacitors and / or inductors connected in series or parallel. Each matching element M1 includes the same type of element; for example, a particular matching element M1 may include one or more capacitors, or one or more inductors.

[0169] In some embodiments, the matching element M1 may also consist only of conductive lines, i.e., without capacitors and / or inductors.

[0170] in, Figure 13 In the example, the number of matching branches 191 is four, and the matching elements M1 included in the four matching branches 191 are capacitor, capacitor, inductor and conductor respectively.

[0171] in, Figure 13 The tuning unit 19 shown is merely an exemplary structure.

[0172] In some embodiments, the switch module 192 may further include a single-pole multi-throw switch. For example, one end of the matching element M1 in each of the plurality of matching branches 191 is connected to the second conductive layer 14, which serves as a ground layer. The single-pole multi-throw switch is used to selectively establish a connection between the other end of the matching element M1 in one of the matching branches 191 and the tuning point P1, thereby electrically connecting the matching element M1 in one of the matching branches 191 between the tuning point P1 and the second conductive layer 14, which serves as a ground layer. The single-pole multi-throw switch may include a fixed end and a throwing end. The fixed end is fixedly connected to the tuning point P1, and the throwing end can be selectively connected to the other end of the matching element M1 in one of the matching branches 191. When the switch module 192 is located between the plurality of matching branches 191 and the second conductive layer 14 which serves as a ground layer, one end of the matching element M1 in the plurality of matching branches 191 is connected to the tuning point P1, the fixed end of the single-pole multi-throw switch included in the switch module 192 can be connected to the second conductive layer 14 which serves as a ground layer, and the throwing end can be selectively connected to the other end of the matching element M1 in one of the matching branches 191.

[0173] In some embodiments, when the antenna assembly 1 includes the aforementioned matching unit 18, and the matching unit 18 is an adjustable matching unit, the structure of the matching unit 18 may also be similar to the structure of the aforementioned tuning unit 19.

[0174] In some embodiments, the antenna assembly 1 may also include the matching unit 18 and the tuning unit 19. When the matching unit 18 is an adjustable matching unit, matching adjustment can be performed simultaneously by the matching unit 18 and the tuning unit 19, thereby increasing the fineness of the adjustment and improving the accuracy of the tuning.

[0175] Please see Figure 14 This is a further structural schematic diagram of the antenna assembly 1 in some embodiments of this application.

[0176] like Figure 14 As shown, in some embodiments, the antenna assembly 1 includes the feed source 17 and a feed coupling stub 20. The feed coupling stub 20 is spaced apart from and parallel to the third edge 12b and / or the fourth edge 12c of the first conductive layer 12 and coupled to the first conductive layer 12. The third edge 12b of the first conductive layer 12 corresponds to the edge of the first side 11c, and the fourth edge 12c of the first conductive layer 12 corresponds to the edge of the second side 11d. The feed source 17 is electrically connected to the feed coupling stub 20, thereby being coupled to the first conductive layer 12 through the feed coupling stub 20. The feed source 17 couples and excites the cavity antenna T1 through the feed coupling stub 20. Under the coupling excitation of the feed source 17, the cavity antenna T1 supports the reception of electromagnetic wave signals in the preset frequency band.

[0177] That is, in some embodiments, the feed source 17 is coupled to the first conductive layer 12 through the feed coupling stub 20. Thus, in some embodiments, the feed source 17 couples and excites the cavity antenna T1 through the feed coupling stub 20.

[0178] Therefore, in some embodiments, the cavity antenna T1 can also be effectively excited to support the transmission and reception of electromagnetic wave signals in the preset frequency band through coupling excitation.

[0179] In some embodiments, the power supply coupling stub 20 may be a conductive stub such as a metal stub, or it may be a coupling sheet made by processes such as FPC (flexible printed circuit board), steel sheet, copper sheet or PCB extended copper cladding.

[0180] in, Figure 14 Also for the purpose of in Figure 1 The diagram illustrates an example of adding the feed coupling stub 20 to the structure of the antenna assembly 1 shown. Clearly, the feed coupling stub 20 can be further added to the antenna assembly 1 in any of the aforementioned embodiments.

[0181] Please see Figure 15 ,for Figure 14The diagram shows a structural schematic of antenna assembly 1 in a modified example.

[0182] In some embodiments, such as Figure 15 As shown, when the antenna assembly 1 further includes the aforementioned matching unit 18, the matching unit 18 is connected between the feed coupling stub 20 and the feed source 17, and is also connected to the second conductive layer 14, which is a ground layer. The matching unit 18 is coupled to the first conductive layer 12 through the feed coupling stub 20. The feed source 17 couples and excites the cavity antenna T1 through the matching unit 18 and the feed coupling stub 20. Under the coupling excitation of the feed source 17 and the impedance matching adjustment of the matching unit 18, the cavity antenna T1 supports the transmission and reception of electromagnetic wave signals in at least a preset frequency band.

[0183] That is, in some embodiments, such as Figure 15 As shown, compared to Figure 14 The antenna assembly 1 shown has a structure in which the matching unit 18 is connected between the feed coupling stub 20 and the feed source 17, and is further connected to the second conductive layer 14, which is a ground layer.

[0184] In some embodiments, the matching unit 18 may include three connection terminals, which are respectively connected to the power supply coupling stub 20, the second conductive layer 14 and the feed source 17. In this case, the matching unit 18 may include a matching device connected to the ground layer / second conductive layer 14, and may also include a matching device connected between the power supply point F1 of the first conductive layer 12 and the feed source 17, thereby improving the matching performance.

[0185] In some embodiments, when the antenna assembly 1 includes a feed coupling stub 20 and also includes the aforementioned matching unit 18, the antenna assembly 1 may also be provided with the aforementioned notch Q1 for setting and accommodating the matching unit 18.

[0186] In some embodiments, the power supply coupling stub 20 is a straight strip, spaced apart from and parallel to the third edge 12b or the fourth edge 12c of the first conductive layer 12, and coupled to the first conductive layer 12.

[0187] That is, in some embodiments, the feed coupling stub 20 may be spaced apart from and parallel to either the third edge 12b or the fourth edge 12c of the first conductive layer 12, and coupled to the first conductive layer 12. Figure 14 and Figure 17The diagram illustrates an example of a feed coupling stub 20 that is close to the third edge 12b of the first conductive layer 12, spaced apart from and parallel to the third edge 12b of the first conductive layer 12, and coupled to the first conductive layer 12.

[0188] Thus, in some embodiments, the feed coupling stub 20 can be spaced apart from and parallel to an edge of the first conductive layer 12 located on the clearance side, so that the feed source 17 can be effectively coupled to excite the cavity antenna T1 through the feed coupling stub 20.

[0189] In some embodiments, the projection area of ​​the feed coupling stub 20 onto the third edge 12b or fourth edge 12c of the first conductive layer 12 is smaller than the size of the third edge 12b or fourth edge 12c of the first conductive layer 12, and can be located at any suitable position on the third edge 12b or fourth edge 12c of the first conductive layer 12. That is, the feed coupling stub 20 can be directly opposite any suitable position on the third edge 12b or fourth edge 12c of the first conductive layer 12. The projection area of ​​the feed coupling stub 20 onto the third edge 12b or fourth edge 12c of the first conductive layer 12, that is, the area on the third edge 12b or fourth edge 12c of the first conductive layer 12 directly opposite the feed coupling stub 20, is equivalent to a feed region. That is, the equivalent feed region can be located at any suitable position on the first side 11c or the second side 11d.

[0190] in, Figure 14 and Figure 15 The difference between the structure of the antenna assembly 1 shown and that of the previous embodiment is that the first conductive layer 12 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.

[0191] Please see Figure 16 This is another simple structural diagram of antenna assembly 1 in some embodiments of this application. Figure 16 As shown, in some embodiments, the power supply coupling stub 20 may be bent, and the power supply coupling stub 20 includes a first power supply coupling stub 201 and a second power supply coupling stub 202. The first power supply coupling stub 201 is spaced apart from and parallel to the third edge 12b of the first conductive layer 12, and the second power supply coupling stub 202 is spaced apart from and parallel to the fourth edge 12c of the first conductive layer 12.

[0192] That is, in some embodiments, the feed coupling stub 20 can be spaced apart from and parallel to the third edge 12b and the fourth edge 12c of the first conductive layer 12, thereby effectively increasing the coupling area with the first conductive layer 12, 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 17.

[0193] In some embodiments, such as Figure 16 As shown, when the power supply coupling branch 20 is bent and includes a first power supply coupling branch 201 and a second power supply coupling branch 202, the power supply coupling branch 20 can be disposed at the connection between the third edge 12b and the fourth edge 12c of the first conductive layer 12. The connection between the first power supply coupling branch 201 and the second power supply coupling branch 202 of the power supply coupling branch 20 can be close to the connection between the third edge 12b and the fourth edge 12c of the first conductive layer 12.

[0194] In some embodiments, the distance between the power supply coupling stub 20 and the third edge 12b or the fourth edge 12c of the first conductive layer 12 can be any distance required to satisfy the coupling between the power supply coupling stub 20 and the first conductive layer 12.

[0195] The feed source 17 can be electrically connected to any suitable location of the feed coupling stub 20, such as at the end, middle, or other positions of the feed coupling stub 20. That is, any position of the feed coupling stub 20 can be used as a location for electrical connection with the feed source 17, thereby receiving the feed signal output by the feed source 17 at any location and coupling it to the first conductive layer 12 to couple and excite the first conductive layer 12.

[0196] In some embodiments, the first conductive layer 12, the second conductive layer 14, and the conductive connection layer 15 may be made of conductive materials such as metal. In some embodiments, the first conductive layer 12, the second conductive layer 14, and the conductive connection layer 15 may be formed on the surface and / or sides of the corresponding dielectric substrate by laser engraving, printing, or other methods. In some embodiments, the first conductive layer 12, the second conductive layer 14, and the conductive connection layer 15 may also be plate-shaped and fixed to the surface and / or sides of the corresponding dielectric substrate by adhesive, snap-fit, or other methods.

[0197] In some embodiments, the first conductive layer 12, the second conductive layer 14, and the conductive connection layer 15 are all made of conductive materials, and the materials of the first conductive layer 12, the second conductive layer 14, and the conductive connection layer 15 may be the same or different. For example, in some embodiments, the first conductive layer 12, the second conductive layer 14, and the conductive connection layer 15 may all be made of metal materials such as copper. As another example, in some embodiments, the first conductive layer 12 and the second conductive layer 14 are made of metal materials, while the conductive connection layer 15 may be conductive foam. Therefore, in some embodiments, when the conductive connection layer 15 is conductive foam, it can achieve the function of the cavity antenna T1 while also effectively protecting the periphery of the cavity antenna T1.

[0198] In some embodiments, the first conductive layer 12 and the second conductive layer 14 may also reuse parts of the structure in other conductive functional components. For example, the first conductive layer 12 may be a part of the shielding cover, the second conductive layer 14 may be a part of the ground plane, and so on.

[0199] In this application, the first side 11c is connected to the second side 11d, and at least one first connecting side 11e is connected between the first side 11c and the second side 11d. Thus, the first side 11c, the second side 11d, and at least one first connecting side 11e connected between the first side 11c and the second side 11d form the complete outer peripheral side of the first dielectric substrate 11. The third side 13c is connected to the fourth side 13d, and at least one second connecting side 13e is connected between the third side 13c and the fourth side 13d. Thus, the third side 13c, the fourth side 13d, and at least one second connecting side 13e connected between the third side 13c and the fourth side 13d form the complete outer periphery of the second dielectric substrate 13. The conductive connection layer 15 connects the first edge 12a of the first conductive layer 12 and the second edge 14a of the second conductive layer 14, and is disposed at least on at least one first connection side 11e and at least one second connection side 13e. When the second conductive layer 14 is used as a grounding layer, the first edge 12a of the first conductive layer 12 is connected to ground. Furthermore, the third edge 12b of the first conductive layer 12 corresponds to the edge of the first side 11c, and the fifth edge 14b of the second conductive layer 14 corresponds to the edge of the third side 13c of the second dielectric substrate 13. The third edge 12b of the first conductive layer 12 and the fifth edge 14b of the second conductive layer 14 are spaced apart. The fourth edge 12c of the first conductive layer 12 corresponds to the edge of the second side 11d, and the sixth edge 14c of the second conductive layer 14 corresponds to the edge of the fourth side 13d of the second dielectric substrate 13. The fourth edge 12c of the first conductive layer 12 and the second conductive layer 14 are connected to the ground. The sixth edge 14c of layer 14 is spaced apart, so that the third edge 12b of the first conductive layer 12 and the fifth edge 14b of the second conductive layer 14 form the edges of two opposite sides of one of the clearance sides S1, and the fourth edge 12c of the first conductive layer 12 and the sixth edge 14c of the second conductive layer 14 form the edges of two opposite sides of the other clearance side S2. The other sides of the cavity antenna T1 are closed by the conductive connection layer 15. Thus, the first conductive layer 12, the second conductive layer 14 and the conductive connection layer 15 form a cavity antenna T1 with two clearance sides S1 and S2.

[0200] Among them, such as Figure 1As shown, the first side 11c includes a first end D1 and a second end D2 opposite to each other, and the second side 11d includes a third end D3 and a fourth end D4 opposite to each other. The first end D1 of the first side 11c and the third end D3 of the second side 11d are connected. At least one first connecting side 11e is connected between the second end D2 of the first side 11c and the fourth end D4 of the second side 11d. The third side 13c includes a fifth end D5 and a sixth end D6 opposite to each other, and the fourth side 13d includes a seventh end D7 and an eighth end D8 opposite to each other. The fifth end D5 of the third side 13c and the seventh end D7 of the fourth side 13d are connected. At least one second connecting side 13e is connected between the sixth end D6 of the third side 13c and the eighth end D8 of the fourth side 13d.

[0201] Therefore, in this application, the corresponding ends of the first side 11c and the second side 11d are connected together, and the at least one first connecting side 11e is connected between the other corresponding ends of the first side 11c and the second side 11d, thus forming a complete outer periphery of the first conductive layer 12. The two corresponding ends of the third side 13c and the fourth side 13d are connected together, and the at least one second connecting side 13e is connected between the other two corresponding ends of the third side 13c and the fourth side 13d, thus forming a complete outer periphery of the second dielectric substrate 13.

[0202] In some embodiments, such as Figure 1 As shown, and as previously described, the projections of the first side 11c, the second side 11d, and at least one first connecting side 11e of the first dielectric plate 11 onto the second dielectric plate 13 substantially coincide with the third side 13c, the fourth side 13d, and at least one second connecting side 13e, respectively.

[0203] That is, in some embodiments, the projection of the first side 11c of the first dielectric substrate 11 onto the second dielectric substrate 13 coincides with the third side 13c; the projection of the second side 11d of the first dielectric substrate 11 onto the second dielectric substrate 13 coincides with the fourth side 13d; and the projection of at least one first connecting side 11e of the first dielectric substrate 11 onto the second dielectric substrate 13 coincides with at least one second connecting side 13e. Thus, the projection of the first conductive layer 12 onto the second conductive layer 14 substantially coincides with the second conductive layer 14, thereby forming a better cavity antenna T1.

[0204] Specifically, as mentioned above, since the first edge 12a of the first conductive layer 12 corresponds to the at least one first connecting side 11e, the third edge 12b corresponds to the first side 11c, and the fourth edge 12c corresponds to the second side 11d, the second edge 14a of the second conductive layer 14 corresponds to the at least one second connecting side 13e, the fifth edge 14b corresponds to the third side 13c of the second dielectric substrate 13, and the sixth edge 14c corresponds to the fourth side 13d of the second dielectric substrate 13, the projections of each side of the first dielectric substrate 11 onto the second dielectric substrate 13 are larger than the corresponding side of the second dielectric substrate 13. When the projections of the first edge 12a of the first conductive layer 12 onto the second conductive layer 14 are approximately coincident with the second edge 14a of the second conductive layer 14, the projections of the third edge 12b of the first conductive layer 12 onto the second conductive layer 14 are approximately coincident with the fifth edge 14b of the second conductive layer 14, and the projections of the fourth edge 12c of the first conductive layer 12 onto the second conductive layer 14 are approximately coincident with the sixth edge 14c of the second conductive layer 14. Thus, the projections of the first conductive layer 12 onto the second conductive layer 14 are approximately coincident with the second conductive layer 14, thereby forming a better cavity antenna T1.

[0205] Obviously, the overlap of the two objects in this application is not a strict overlap, but rather an approximate overlap, with some deviation allowed. If the two objects are parallel and the distance between them is less than a preset distance, such as 5 mm, or if the two objects intersect and the angle between them is less than a preset angle, such as 20°, they can also be considered as overlapping.

[0206] In some embodiments, the first side 11c and the second side 11d are both straight strips and vertically connected, the third side 13c and the fourth side 13d are both straight strips and vertically connected; the number of the at least one first connecting side 11e is at least one, each first connecting side is a straight line, an arc or an irregular shape, and the number of the at least one second connecting side 13e is at least one, each second connecting side 13e is a straight line, an arc or an irregular shape.

[0207] That is, in some embodiments, the first side 11c and the second side 11d are both straight strips and connected at an angle, specifically vertically connected; the third side 13c and the fourth side 13d are both straight strips and connected at an angle, specifically vertically connected; and the number and shape of at least one first connecting side 11e and at least one second connecting side 13e can be set as needed.

[0208] In this application, the vertical connection between two objects does not refer to a strict vertical connection, but rather to a roughly vertical connection. For example, the angle between the two objects can be between 80° and 100°, etc., all of which can be considered as vertical.

[0209] In this application, the first side 11c, the second side 11d, and at least one first connecting side 11e being straight strips means that the projections of the first side 11c, the second side 11d, and at least one first connecting side 11e along the thickness direction of the first dielectric plate 11 are straight lines. As mentioned above, the first side 11c, the second side 11d, and at least one first connecting side 11e have a certain dimension in the thickness direction, and therefore are straight strips. Similarly, the third side 13c, the fourth side 13d, and at least one second connecting side 13e being straight strips means that the projections of the third side 13c, the fourth side 13d, and at least one second connecting side 13e along the thickness direction of the second dielectric plate 13 are straight lines. As mentioned above, the third side 13c, the fourth side 13d, and at least one second connecting side 13e have a certain dimension in the thickness direction of the second dielectric plate 13, and therefore are straight strips. Correspondingly, since the first edge 12a of the first conductive layer 12 corresponds to the at least one first connecting side 11e, the third edge 12b corresponds to the first side 11c, and the fourth edge 12c corresponds to the second side 11d, and the second edge 14a of the second conductive layer 14 corresponds to the at least one second connecting side 13e, the fifth edge 14b corresponds to the third side 13c of the second dielectric substrate 13, and the sixth edge 14c corresponds to the fourth side 13d of the second dielectric substrate 13, they are all approximately straight strips. Alternatively, when the thicknesses of the first conductive layer 12 and the second conductive layer 14 are small, they can also be considered as straight lines. In some embodiments, the thicknesses of the conductive layers such as the first conductive layer 12, the second conductive layer 14, and the conductive connection layer 15 can be less than the thicknesses of the dielectric substrates such as the first dielectric substrate 11 and the second dielectric substrate 13. Relatively speaking, the thicknesses of the conductive layers such as the first conductive layer 12, the second conductive layer 14, and the conductive connection layer 15 can also be ignored.

[0210] In some embodiments, such as Figure 1As shown, the at least one first connecting side 11e includes two first connecting sides 11e, which are straight strips and are connected sequentially between the second end D2 of the first side 11c and the fourth end D4 of the second side 11d; the at least one second connecting side 13e includes two second connecting sides 13e, which are straight strips and are connected sequentially between the sixth end D6 of the third side 13c and the eighth end D8 of the fourth side 13d.

[0211] That is, in some embodiments, the at least one first connecting side 11e and the at least two second connecting sides 13e may each be two, and both may be straight strips.

[0212] In some embodiments, such as Figure 1 As shown, the two first connecting sides 11e are parallel to the first side 11c and the second side 11d, respectively, and the two second connecting sides 13e are parallel to the third side 13c and the fourth side 13d, respectively. Therefore, since the first side 11c and the second side 11d are both straight strips and connected approximately perpendicularly, and the third side 13c and the fourth side 13d are both straight lines and connected approximately perpendicularly, and the lengths of the first side 11c and the second side 11d are approximately equal (λ / 4), the two first connecting sides 11e 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 first conductive layer 12 to the second conductive layer 14. 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.

[0213] Obviously, in other embodiments, the two first connecting sides 11e may not be parallel to the first side 11c and the second side 11d respectively, and the two second connecting sides 13e may not be parallel to the third side 13c and the fourth side 13d respectively, as long as the projection of at least one first connecting side 11e of the first dielectric plate 11 onto the second dielectric plate 13 is approximately coincident with the at least one second connecting side 13e.

[0214] In this application, since the conductive connection layer 15 is connected between the at least one first connection side 11e and the at least one second connection side 13e, the shape of the projection of the conductive connection layer 15 onto the first conductive layer 12 or onto the second dielectric substrate 13 is the same as the projection shape of the at least one first connection side 11e or the projection shape of the at least one second connection side 13e. Therefore, when both the at least one first connection side 11e and the at least two second connection sides 13e are two in number and both are straight strips, the conductive connection layer 15 correspondingly includes two intersecting planes.

[0215] Please see Figure 17 This is another simplified structural diagram of antenna assembly 1 in some embodiments of this application. Figure 17 As shown, the at least one first connecting side 11e includes a first connecting side 11e, which is any shape such as an arc, a straight line, or an irregular shape, and is connected between the second end D2 of the first side 11c and the fourth end D4 of the second side 11d; the at least one second connecting side 13e includes a second connecting side 13e, which is any shape such as an arc, a straight line, or an irregular shape, and is connected between the third side 13c and the fourth side 13d.

[0216] That is, in some embodiments, the number of the at least one first connecting side 11e and the at least one second connecting side 13e may each be only one.

[0217] in, Figure 17 In this configuration, each of the at least one first connecting side 11e and the at least one second connecting side 13e is an arc-shaped piece. The center of curvature of the first connecting side 11e faces the side containing the first side 11c and the second side 11d, and the center of curvature of the second connecting side 13e faces the side containing the third side 13c and the fourth side 13d. Correspondingly, the edge containing the first edge 12a of the first conductive layer 12 is also arc-shaped, and the edge containing the second edge 14a of the second conductive layer 14 is also arc-shaped. Thus, as... Figure 17 As shown, the cavity antenna T1 formed by the first conductive layer 12, the second conductive layer 14 and the conductive connection layer 15 of the antenna assembly 1 is roughly fan-shaped, and the conductive connection layer 15 is roughly arc-shaped.

[0218] Therefore, by setting the at least one first connecting side 11e and the at least one second connecting side 13e as an arc-shaped structure, the overall size of the cavity antenna T1 can be further reduced.

[0219] in, Figure 17 To illustrate the shape of the cavity antenna T1, many components and component symbols have been omitted.

[0220] Please see Figure 18 This is another simplified structural diagram of antenna assembly 1 in some embodiments of this application. Figure 5 As shown, each of the at least one first connecting side 11e and the at least one second connecting side 13e is a single, straight strip. Correspondingly, the edge containing the first edge 12a of the first conductive layer 12 is also straight, and the edge containing the second edge 14a of the second conductive layer 14 is also straight. Thus, as Figure 18 As shown, the cavity antenna T1 formed by the first conductive layer 12, the second dielectric substrate 13, and the conductive connection layer 15 of the antenna assembly 1 is approximately triangular, while the conductive connection layer 15 is planar. Compared to... Figure 1 The structure shown can further reduce the size by nearly half, which is more conducive to reducing the overall size of the cavity antenna T1.

[0221] in, Figure 18 Also, mainly to illustrate the shape of the cavity antenna T1, many components and component symbols have been omitted.

[0222] Obviously, as mentioned above, in some embodiments, the at least one first connecting side 11e includes a first connecting side 11e, which may also be an irregular shape or any other shape; the at least one second connecting side 13e includes a second connecting side 13e, which may also be an irregular shape or any other shape.

[0223] The preset frequency band can be any frequency band, such as high-frequency bands like WiFi 2.4G / WiFi 5G, mid-to-high-frequency bands like GPS L1 (1575MHz) or GPS L5 (1176MHz), or even low-frequency bands. The preset frequency band can also be other navigation communication bands or cellular communication bands. Since lower frequency bands require larger antenna sizes, the antenna assembly 1 of this application can effectively reduce the overall size and adapt to even lower frequency bands, making the implementation of even lower frequency bands possible.

[0224] In some embodiments, when the antenna assembly 1 includes a matching unit 18 and / or a tuning unit 19, the preset frequency band may include multiple frequency bands. That is, the antenna assembly 1 can support the transmission and reception of electromagnetic wave signals in multiple frequency bands under the matching adjustment of the matching unit 18 and / or the tuning unit 19. In some embodiments, the antenna assembly 1 can change at least one of the supported frequency bands under the matching adjustment of the matching unit 18 and / or the tuning unit 19.

[0225] Therefore, in this application, the cavity antenna T1 with the above-described structure can radiate through the clearance side, and only requires a certain clearance near the clearance side to achieve good antenna radiation performance, thus requiring very little clearance area and can be used in environments with very small clearance areas. Furthermore, in the prior art, a typical cavity antenna achieves clearance on one side through an opening or other means, i.e., it has only one empty side, and the clearance side is rectangular. The point of maximum electric field is located at the midpoint of the long side of the clearance side. To meet the boundary condition of minimum electromagnetic oscillation, the long side of the clearance side needs to be λ / 2, so that the distance from the point of maximum electric field to the end of the long side of the clearance side, i.e., to the conductive sidewall, is λ / 4, thus supporting resonance in the corresponding frequency band. Therefore, the length of the long side of the cavity antenna T1 in the prior art, i.e., the long side located on the clearance side, needs to be at least λ / 2. However, the cavity antenna T1 of this application has two clearance sides S1 and S2, and the first side 11c on the clearance side S1 is connected to the second side 11d on the clearance side S2, and the third side 13c on the clearance side S1 is connected to the fourth side 13d on the clearance side S2. This is equivalent to the two clearance sides S1 and S2 being connected, for example, at an angle. This makes the point of maximum electric field approximately the intersection of the two clearance sides S1 and S2, and the required length of each clearance side is less than λ / 2, effectively reducing the overall size of the cavity antenna. In addition, in this application, since the cavity antenna T1 is formed by setting a conductive layer on a dielectric substrate, the structural stability can be improved through the load-bearing function of the dielectric substrate. Compared with the existing method of forming the conductive sidewalls of the cavity antenna with springs or the like, which requires further screw fastening, this method can effectively improve the performance of the cavity antenna and avoid the use of screws, thus reducing the overall volume.

[0226] Please see Figure 19 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.

[0227] in, Figure 19 The diagram illustrates a simple example of the antenna assembly 1 located within the electronic device 100. (See diagram for example.) Figure 19 As shown, the electronic device 100 includes two adjacent side frames 2, and the two clear side frames S1 and S2 are respectively adjacent to and spaced apart from the two adjacent side frames 2.

[0228] As mentioned above, the first conductive layer 12, the second conductive layer 14, and the conductive connection layer 15 of the antenna assembly 1 form a cavity antenna T1 with two clearance sides S1 and S2. Generally, the clearance sides S1 and S2 of the cavity antenna T1 are the radiation windows for electromagnetic wave signals. Therefore, by placing the two clearance sides S1 and S2 adjacent to and spaced apart from the two adjacent side frames 2, the clearance area near the side frame 2 of the electronic device 100 can be used to transmit and receive electromagnetic wave signals, thereby ensuring antenna performance.

[0229] In some embodiments, the two clear side surfaces S1 and S2 are parallel to the two adjacent side frames 2, respectively.

[0230] As mentioned above, in some embodiments, the first side 11c and the second side 11d are both straight strips and vertically connected, and the third side 13c and the fourth side 13d are both straight strips and vertically connected. Since the first side 11c and the third side 13c are located on one of the clearance sides S1, and the second side 11d and the fourth side 13d are located on the other clearance side S2, the clearance side S1 can be regarded as the side defined by the first side 11c and the third side 13c, and the clearance side S2 is the side defined by the second side 11d and the fourth side 13d. Since the first side 11c and the second side 11d are both straight strips and vertically connected, and the third side 13c and the fourth side 13d are both straight strips and vertically connected, the two clearance sides S1 and S2 are also vertically connected. Since the two adjacent side frames 2 of the electronic device 100 are usually perpendicular, by placing the two clear side frames S1 and S2 parallel to the two adjacent side frames 2, it is beneficial to save the space occupied by the antenna assembly 1 in the electronic device 100.

[0231] in, Figure 19 The electronic device 100 shown includes an antenna assembly 1 that is designed to... Figure 1 The structure of antenna assembly 1 shown is illustrated as an example.

[0232] Please see Figure 20 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 20 The antenna assembly 1 included in the electronic device 100 can be used as... Figure 10The diagram shows the return loss curve obtained from simulation testing using antenna component 1 as an example.

[0233] in, Figure 20 The return loss curve S11-1 is illustrated, and an example is given using the preset frequency band as WiFi 2.4G / WiFi 5G. That is, in some embodiments, the antenna assembly 1 includes a matching unit 18, which, under the matching of the matching unit 18, can simultaneously cover the WiFi 2.4 (resonant frequency of approximately 2.4GHz) and WiFi 5G (resonant frequency of approximately 5.5GHz) frequency bands.

[0234] 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.

[0235] like Figure 20 As shown, the return loss at the resonant frequency of 2.4GHz in the WiFi 2.4G band is approximately -14.5dB, while the return loss at the resonant frequency of 5.5GHz in the WiFi 5G band is approximately -21dB. Therefore, it can be seen that the return loss is low and the overall loss is minimal when the antenna assembly 1 included in the electronic device 100 operates in the preset frequency band.

[0236] Please see Figure 21 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 21 Alternatively, the antenna assembly 1 included in the electronic device 100 can be used as the antenna assembly 1. Figure 10 The diagram shows the radiation efficiency and overall system efficiency curves obtained from simulation tests using antenna component 1 as an example.

[0237] in, Figure 21 The radiation efficiency curve Sr1 and the overall system efficiency curve St1 are illustrated, and an example is given using the preset frequency band as WiFi 2.4G / WiFi 5G.

[0238] 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 21As shown, the radiative efficiency at the resonant frequency of 2.4GHz in the WiFi 2.4G band is approximately -3.3dB, and the overall system efficiency is also approximately -3.3dB. Both the radiative efficiency and the overall system efficiency are relatively high, achieving good antenna efficiency. Furthermore, at the resonant frequency of 5.5GHz in the WiFi 5G band, the radiative efficiency is approximately -2.9dB, and the overall system efficiency is approximately -4.9dB, both of which are also relatively high.

[0239] Therefore, it can be seen that the antenna assembly 1 of the electronic device 100 of this application has high efficiency when operating in the preset frequency band and can achieve better antenna performance.

[0240] Please see Figure 22 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 a preset frequency band. Figure 22 Alternatively, the antenna assembly 1 included in the electronic device 100 can be used as the antenna assembly 1. Figure 10 The results were obtained by simulation testing using antenna component 1 as an example.

[0241] in, Figure 22 Taking the preset frequency band as WiFi 2.4G / WiFi 5G as an example, the antenna pattern A1 of WiFi 2.4G and the antenna pattern A2 of WiFi 5G are shown.

[0242] from Figure 22 It can be seen that the antenna pattern A1 of the WiFi 2.4G band and the antenna pattern A2 of the WiFi 5G band are both relatively rounded, with no obvious distortion in radiation characteristics and good directivity.

[0243] In some embodiments, Figure 22 The antenna pattern can be obtained with the display screen of the electronic device 100 facing upwards. The darkest area in the antenna pattern represents the main radiation direction / beam direction R1. Therefore, in some embodiments, from... Figure 22 It can be seen that the antenna pattern A1 of the WiFi 2.4G band and the main radiation direction R1 of the WiFi 5G band are both roughly oriented towards the side of the display screen of the electronic device 100.

[0244] Please see Figure 23 This is a schematic diagram of the antenna standing wave (SSW) of the antenna assembly 1 included in some embodiments of the electronic device 100 of this application. Figure 23 The antenna assembly 1 included in the electronic device 100 may be the antenna assembly 1. Figure 12 The antenna component 1 shown is used as an example to obtain the antenna standing wave diagram obtained from simulation test.

[0245] Among them, the standing wave is also called the voltage standing wave ratio (VSWR), and the frequency corresponding to the trough of the voltage standing wave ratio is the resonant frequency.

[0246] Figure 23 Several switchable standing waves Vs1 are illustrated, among which, as before... Figure 12 As shown, the antenna assembly 1 also includes a tuning unit 19, which can present corresponding tuning parameter values. The tuning parameter values ​​presented by the tuning unit 19 are adjustable. Depending on the different tuning parameter values ​​of the tuning unit 19, the cavity antenna T1 supports different preset frequency bands under the excitation of the feed signal, and thus the corresponding standing wave Vs1 is different.

[0247] in, Figure 23 The example shown is four switchable standing waves Vs1. Obviously, in some embodiments, the number of different tuning parameter values ​​presented by the tuning unit 19 can be any number as needed, and the number of switchable standing waves Vs1 can also be any number.

[0248] In this application, depending on the size of the cavity antenna T1 and under the matching adjustment of the matching unit 18 and / or tuning unit 19, it supports the transmission and reception of electromagnetic wave signals in multiple frequency bands, or changes the supported frequency bands. The cavity antenna T1 can also support narrowband antennas such as GPS L1 / L5, and can also operate in other cellular frequency bands, such as low-frequency B5 / B8, intermediate-frequency B3 / B1, high-frequency B40 / B41, etc., and the preset frequency band can include single-frequency, dual-frequency, tri-frequency, or even more frequency bands, which will not be elaborated here.

[0249] Please see Figure 24 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 24 As shown, 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 clear side surfaces S1 and S2 on the plane of the display screen 3 are located within the black border area H1.

[0250] 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 clearance 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 by the clearance 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.

[0251] In some embodiments, since the electromagnetic wave signals radiated from the clear 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.

[0252] As mentioned above, the main radiation direction of the preset frequency band, such as the main radiation direction of the WiFi 2.4G band and the WiFi 5G band, is generally towards the side facing the display screen 3 of the electronic device 100. Therefore, when the projections of the two clearance sides S1 and S2 on the plane of the display screen 3 are located within the black border area H1, the electromagnetic wave signal of the preset frequency band radiating in that direction can pass through well without affecting the antenna radiation performance.

[0253] In some embodiments, the projections of the two clear sides 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.

[0254] The two clearance sides S1 and S2 are approximately perpendicular to the plane of the display screen 3. The projection of the clearance side S1 onto the plane of the display screen 3 is actually a line formed by the projections of the first side 11c and the third side 13c onto the plane of the display screen 3, which is also a line formed by the projections of the third edge 12b of the first conductive layer 12 and the fifth edge 14b of the second conductive layer 14 onto the plane of the display screen 3. The projection of the clearance side S2 onto the plane of the display screen 3 is actually a line formed by the projections of the second side 11d and the fourth side 13d onto the plane of the display screen 3, which is also a line formed by the projections of the fourth edge 12c of the first conductive layer 12 and the sixth edge 14c of the second conductive layer 14 onto the plane of the display screen 3. By ensuring that the projections of the two clearance sides 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, the cavity antenna T1 can maximize the utilization of the black border area H1. This means that the electromagnetic wave signals radiated from the clearance sides S1 and S2 of the cavity antenna T1 can be transmitted to the outside of the electronic device 100 almost through the entire black border area H1, thus effectively ensuring antenna performance.

[0255] Obviously, in some embodiments, the portions of the two adjacent side frames 2 of the electronic device 100 facing the two clear 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 by the clear 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 clear area and further improving the antenna radiation performance.

[0256] Please see Figure 25 This is a schematic side view of a portion of the structure of an electronic device 100 in some embodiments of this application. Figure 25 This can be a side view schematic diagram illustrating the internal structure of the electronic device 100 as viewed from its long side.

[0257] like Figure 25 As shown, the electronic device 100 includes a metal cover plate 4. When the first conductive layer 12 serves as a power supply layer and the second conductive layer 14 is used as a grounding layer, the second conductive layer 14 is electrically connected to the metal cover plate 4 and grounded. Alternatively, the second conductive layer 14 is at least a portion of the metal cover plate 4.

[0258] That is, in some embodiments, the metal cover 4 of the electronic device 100 can serve as the ground of the whole device to provide ground potential, the second conductive layer 14 of the antenna assembly 1 can be electrically connected to the metal cover 4 to be grounded, or the second conductive layer 14 of the antenna assembly 1 can be directly a part of the metal cover 4.

[0259] In some embodiments, when the second conductive layer 14 of the antenna assembly 1 is electrically connected to the metal cover plate 4 and grounded, the surface of the second conductive layer 14 facing away from the second dielectric substrate 13 can be in contact with the inner surface of the metal cover plate 4 and be electrically connected. Thus, by attaching the two surfaces together, the bonding stability between the antenna assembly 1 and the metal cover plate 4 can be improved, and the thickness of the electronic device 100 can be reduced. In some embodiments, the surface of the second conductive layer 14 facing away from the second dielectric substrate 13 can be attached to the inner surface of the metal cover plate 4 and connected by means of bonding, welding, etc., further improving the bonding stability.

[0260] In some embodiments, such as Figure 25 As shown, the surface of the first conductive layer 12 facing away from the first dielectric substrate 11 can contact the back of the display screen 3. Therefore, in some embodiments, the cavity antenna T1 can be confined by the display screen 3 and the metal cover plate 4, thereby further improving the stability of the structure.

[0261] In some embodiments, when the second conductive layer 14 is at least a portion of the metal cover plate, the first edge 12a of the first conductive layer 12 of the antenna assembly 1 can be connected to a corresponding position of a preset area of ​​the metal cover plate 4 via a conductive connection layer 15. Thus, the first conductive layer 12, the preset area of ​​the metal cover plate 4, and the conductive connection layer 15 can form a cavity antenna T1 with two clear sides. When the second conductive layer 14 is at least a portion of the metal cover plate 4, a portion of the metal cover plate 4 can be reused as part of the cavity antenna T1, thereby saving costs and further reducing the thickness of the electronic device 100.

[0262] In some embodiments, when the electronic device 100 is an electronic device such as a mobile phone or a tablet computer, the metal cover plate can be a metal back cover. The metal cover plate 4 is a structure that integrates the function of a mid-frame. The metal cover plate 4 is not only used to cover the back of the electronic device 100, but also used to provide support for the display screen 3, etc., and cooperates with the display screen 3 to form a receiving cavity to accommodate various components of the electronic device 100.

[0263] Please see Figure 26This is a schematic side view of a portion of the structure of an electronic device 100 in some embodiments of this application. Figure 26 This can be another side view schematically illustrating the internal structure of the electronic device 100 as viewed from its long side.

[0264] In some embodiments, the electronic device 100 further includes a motherboard 5, the motherboard 5 including a ground layer 51, and when the second conductive layer 14 is used for grounding as a ground layer, the second conductive layer 14 may be grounded by being electrically connected to the ground layer 51 of the motherboard 5, or the second conductive layer 14 may be at least a portion of the ground layer 51.

[0265] That is, in some embodiments, the ground layer 51 of the motherboard 5 of the electronic device 100 can provide a ground potential, the second conductive layer 14 of the antenna assembly 1 can be electrically connected to the ground layer 51 of the motherboard 5 to be grounded, or the second conductive layer 14 of the antenna assembly 1 can be directly a part of the ground layer 51 of the motherboard 5.

[0266] The preset area of ​​the ground layer 51 of the motherboard 5 can be exposed toward the side where the display screen 3 is located. For example, the preset area of ​​the ground layer 51 can be exposed by removing the preset area of ​​other layers of the motherboard 5 located on the side of the ground layer 51 near the display screen 3.

[0267] When the second conductive layer 14 of the antenna assembly 1 is grounded by being electrically connected to the ground layer 51 of the motherboard 5, the second conductive layer 14 of the antenna assembly 1 / the cavity antenna T1 can be carried on a preset area exposed on the side of the ground layer 51 facing the display screen 3 and grounded by being electrically connected to the ground layer 51. When the second conductive layer 14 is at least a part of the ground layer 51, the first edge 12a of the first conductive layer 12 of the antenna assembly 1 can be connected to the corresponding position in the preset area of ​​the ground layer 51 through the conductive connection layer 15. Thus, the first conductive layer 12, the preset area of ​​the ground layer 51, and the conductive connection layer 15 can form a cavity antenna T1 with two clear sides.

[0268] The feed source 17 can be disposed on the motherboard 5 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.

[0269] Please see Figure 27 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 27As shown, in some embodiments, the antenna assembly 1 included in the electronic device 100 may also be the aforementioned type. Figure 17 The antenna assembly 1 shown, namely, the at least one first connecting side 11e and the at least one second connecting side 13e are both arc-shaped, and the cavity antenna T1 formed by the first conductive layer 12, the second conductive layer 14 and the conductive connecting layer 15 of the antenna assembly 1 is approximately fan-shaped.

[0270] Similarly, the two clear sides 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 connection layer 15 is close to the interior of the electronic device 100. Since the conductive connection layer 15 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.

[0271] Please see Figure 28 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 12 As shown, in some embodiments, the antenna assembly 1 included in the electronic device 100 may also be the aforementioned type. Figure 18 The antenna assembly 1 shown is a single, straight strip, consisting of at least one first connecting side 11e and at least one second connecting side 13e.

[0272] At this time, the cavity antenna T1 forms a triangular structure, which also creates more clearance space, making it convenient to place other functional devices of the electronic device 100.

[0273] In this application, the cavity antenna T1 has a shape that is a projection along the arrangement direction of the first conductive layer 12 and the second conductive layer 14, that is, along the thickness direction of the first dielectric substrate 11, etc.

[0274] Please see Figure 29 This is a simplified structural diagram illustrating a portion of the internal structure in some embodiments of this application. Wherein, as... Figure 29 As shown, and as mentioned above Figure 19 As shown in the figure, the electronic device 100 includes multiple sets of two adjacent side frames 2, wherein, as Figure 29 As shown, 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 clear side frames S1 and S2 of each antenna assembly 1 are respectively adjacent to and spaced apart from the corresponding set of two adjacent side frames 2.

[0275] 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.

[0276] Among them, such as Figure 29 As 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.

[0277] in, Figure 29 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.

[0278] 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 different frequency bands for transmitting and receiving electromagnetic wave signals. For example, one antenna component 1 supports the GPS frequency band, another antenna component 1 supports the WIFI frequency band, and so on.

[0279] 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.

[0280] In some embodiments, when the number of antenna assemblies 1 includes two or more, the feed sources 17 included in different antenna assemblies 1 may be the same or different.

[0281] In some embodiments, such as Figure 19 , Figure 29 As shown in the figure, the electronic device 100 is a tablet electronic device, and the two adjacent side frames 2 are any two adjacent side frames 2 of the electronic device 100.

[0282] That is, in some embodiments, the electronic device 100 is a flat-panel 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.

[0283] Please see Figure 30 This is a simplified overall schematic diagram of an electronic device 100 in some embodiments of this application. In some embodiments, such as Figure 30 As 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.

[0284] 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 of ​​the antenna assembly 1. Therefore, as mentioned above, the two clearance sides 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 clearance sides 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.

[0285] Among them, such as Figure 30 As shown, the electronic device 100 is a laptop computer. The first body 110 is equipped with a display screen 3, and the second body 120 is equipped with a keyboard 6. Therefore, the aforementioned two adjacent side frames 2 refer to any two adjacent side frames 2 on the first body 110, such as... Figure 30 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.

[0286] 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.

[0287] Among them, such as Figure 30 As shown, the second body 120 is also provided with a touchpad 61 for users to perform touch input.

[0288] In some embodiments, when the electronic device 100 is a laptop computer, the metal cover 4 may be a cover on the side of the first body 110 that is provided with a display screen 3, opposite to the display screen 3.

[0289] Please see Figure 31 This is a simplified planar schematic diagram of an electronic device 100 in some embodiments of this application. Wherein, as... Figure 31 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.

[0290] 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.

[0291] 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.

[0292] Among them, such as Figure 31 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.

[0293] 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 30 There was no indication of it.

[0294] 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.

[0295] 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.

[0296] The antenna assembly and electronic device 100 of this application, by forming a cavity antenna T1 with the above-described structure, can radiate through the clearance side. Good antenna radiation performance is achieved with only a certain clearance near the clearance side, thus requiring very little clearance area and enabling application in environments with limited clearance. Furthermore, in the prior art, a typical cavity antenna achieves clearance on one side through an opening or similar means, i.e., it has only one empty side, and this clearance side is rectangular. The point of maximum electric field is located at the midpoint of the long side of the clearance side. To meet the boundary condition of minimum electromagnetic oscillation, the long side of the clearance side needs to be λ / 2, so that the distance from the point of maximum electric field to the end of the long side of the clearance side, i.e., to the conductive sidewall, is λ / 4, supporting resonance in the corresponding frequency band. Therefore, the length of the long side of the cavity antenna T1 in the prior art, i.e., the long side located on the clearance side, needs to be at least λ / 2. However, the cavity antenna T1 of this application has two clearance sides S1 and S2, and the first side 11c on the clearance side S1 is connected to the second side 11d on the clearance side S2, and the third side 13c on the clearance side S1 is connected to the fourth side 13d on the clearance side S2. This is equivalent to the two clearance sides S1 and S2 being connected, for example, at an angle. This makes the point of maximum electric field approximately the intersection of the two clearance sides S1 and S2, and the required length of each clearance side is less than λ / 2, effectively reducing the overall size of the cavity antenna. In addition, in this application, since the cavity antenna T1 is formed by setting a conductive layer on a dielectric substrate, the structural stability can be improved through the load-bearing function of the dielectric substrate. Compared with the existing method of forming the conductive sidewalls of the cavity antenna with springs or the like, which requires further screw fastening, this method can effectively improve the performance of the cavity antenna and avoid the use of screws, thus reducing the overall volume.

[0297] 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.

[0298] 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 first dielectric substrate includes a first surface and a second surface opposite to each other, and also includes a first side, a second side, and at least one first connecting side connected between the first side and the second side, wherein one end of the first side is connected to one end of the second side, and the other end of the first side is connected to the other end of the second side through the at least one first connecting side. A first conductive layer is disposed on the first surface. The first conductive layer includes a first edge, which is the edge of the first conductive layer corresponding to the at least one first connection side. A second dielectric substrate is disposed opposite to the first dielectric substrate. The second dielectric substrate includes a third surface and a fourth surface opposite to each other, and also includes a third side, a fourth side, and at least one second connecting side connected between the third side and the fourth side. The third surface is further away from the first dielectric substrate relative to the fourth surface, and the first surface of the first dielectric substrate is further away from the second dielectric substrate relative to the second surface. One end of the third side is connected to one end of the fourth side, and the other end of the third side is connected to the other end of the fourth side through the at least one second connecting side. A second conductive layer is disposed on the third surface. The second conductive layer includes a second edge, which is the edge of the second conductive layer corresponding to the at least one second connection side. A conductive connection layer is connected between the first edge of the first conductive layer and the second edge of the second conductive layer, and is disposed at least on the first connection side and the second connection side; The first side is disposed opposite to the third side, and the second side is disposed opposite to the fourth side. The first conductive layer, the second conductive layer, and the conductive connection layer form a cavity antenna with two clearance sides for electromagnetic wave signals to pass through. The first side and the third side are located on one of the clearance sides, and the second side and the fourth side are located on the other clearance side.

2. The antenna assembly according to claim 1, characterized in that, The first conductive layer serves as a feed layer for receiving a feed signal. The cavity antenna is used to support the transmission and reception of electromagnetic wave signals in a preset frequency band under the excitation of the feed signal. The equivalent electrical lengths of the third and fourth edges of the first conductive layer are both equal to λ / 4, where λ is the wavelength corresponding to the electromagnetic wave signal in the preset frequency band. The third edge of the first conductive layer corresponds to the edge of the first side, and the fourth edge of the first conductive layer corresponds to the edge of the second side.

3. The antenna assembly according to claim 1, characterized in that, The first dielectric substrate and the second dielectric substrate are spaced apart, or the first dielectric substrate and the second dielectric substrate are bonded together, or the first dielectric substrate and the second dielectric substrate are an integral dielectric substrate.

4. The antenna assembly according to claim 3, characterized in that, The antenna assembly further includes a support member disposed between the first dielectric substrate and the second dielectric substrate, the first dielectric substrate and the second dielectric substrate being spaced apart by the support member, and the conductive connection layer being partially disposed on at least a portion of the side of the support member.

5. The antenna assembly according to claim 4, characterized in that, The support member includes a support frame, the support frame includes at least one support frame strip, the at least one support frame strip includes at least one target support frame strip corresponding to the at least one first connecting side and the at least one second connecting side, and the conductive connection layer is also partially disposed on the side of the at least one target support frame strip.

6. The antenna assembly according to claim 5, characterized in that, The support frame is a closed annular frame. The at least one support frame strip includes multiple support frame strips, and the at least one support frame strip also includes support frame strips corresponding to the first side and the third side, as well as support frame strips corresponding to the second side and the fourth side. Multiple support frame strips are connected to form the closed annular frame.

7. The antenna assembly according to claim 4, characterized in that, The support member includes a support plate, the support plate includes at least one target side, the at least one target side corresponds to the at least one first connecting side and the at least one second connecting side, and the conductive connection layer is also partially disposed on at least one target side of the support plate.

8. The antenna assembly according to claim 4, characterized in that, The support component is also equipped with a matching device.

9. The antenna assembly according to claim 3, characterized in that, The first dielectric substrate and the second dielectric substrate are bonded together, the second surface of the first dielectric substrate and the fourth surface of the second dielectric substrate are facing each other and bonded together, and the conductive connection layer is connected between the first edge of the first conductive layer and the second edge of the second conductive layer, and is disposed on the first connection side and the second connection side.

10. The antenna assembly according to claim 3, characterized in that, The first dielectric substrate and the second dielectric substrate are integral dielectric substrates. The first surface of the first dielectric substrate and the third surface of the second dielectric substrate are two opposite surfaces of the integral dielectric substrate. The conductive connection layer is connected between the first edge of the first conductive layer and the second edge of the second conductive layer, and is disposed on the first connection side and the second connection side.

11. The antenna assembly according to claim 10, characterized in that, The integrated dielectric board is a circuit board with a multi-layer structure. The first dielectric board and the second dielectric board are two of the layers in the integrated dielectric board. The integrated dielectric board also includes a support plate disposed between the first dielectric board and the second dielectric board. The support plate is used to mount matching devices.

12. The antenna assembly according to claim 1, characterized in that, The first conductive layer is provided with a feed point and serves as a feed layer, and the second conductive layer is used to connect to the ground and serves as a ground layer. At least the first conductive layer and the first dielectric substrate have notches to form a receiving space, which is used to accommodate a matching device. The matching device is mounted on the first dielectric substrate and / or the second dielectric substrate.

13. The antenna assembly according to claim 2, characterized in that, The antenna assembly also includes a feed source coupled to the first conductive layer for providing the feed signal.

14. The antenna assembly according to claim 13, characterized in that, The antenna assembly further includes a matching unit, which is coupled between the first conductive layer, the second conductive layer and the feed source, for impedance matching adjustment.

15. The antenna assembly according to claim 14, characterized in that, The first conductive layer is provided with a feed point, the second conductive layer is used to connect to the ground and serve as a grounding layer, and the matching unit is connected between the feed point, the grounding layer and the feed source.

16. The antenna assembly according to claim 14, characterized in that, The matching unit is an adjustable matching unit, and the matching parameter value of the matching unit is adjustable so that the preset frequency band supported by the cavity antenna under the excitation of the feed signal is adjustable.

17. The antenna assembly according to claim 13, characterized in that, The antenna assembly further includes a feed coupling stub, which is spaced apart from and parallel to the third and / or fourth edges of the first conductive layer and coupled to the first conductive layer. The third edge of the first conductive layer corresponds to the edge of the first side, and the fourth edge of the first conductive layer corresponds to the edge of the second side. The feed source is electrically connected to the feed coupling stub, thereby coupling to the first conductive layer through the feed coupling stub. The feed source couples and excites the cavity antenna through the feed coupling stub, and the cavity antenna supports the reception of electromagnetic wave signals in the preset frequency band under the coupling excitation of the feed source.

18. The antenna assembly according to claim 17, characterized in that, The power supply coupling stub is a straight strip, spaced apart from and parallel to the first edge or the second edge of the first conductive layer, and coupled to the first conductive layer.

19. The antenna assembly according to claim 17, 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 first conductive layer, and the second power supply coupling stub is spaced apart from and parallel to the second side of the first conductive layer.

20. 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 side 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 side is connected between the sixth end of the third side and the eighth end of the fourth side.

21. The antenna assembly according to claim 20, characterized in that, The projections of the first side, the second side, and at least one first connecting side of the first dielectric substrate onto the second dielectric substrate coincide with the third side, the fourth side, and at least one second connecting side, respectively.

22. The antenna assembly according to claim 1, characterized in that, The first side and the second side are both straight strips and vertically connected, the third side and the fourth side are both straight strips and vertically 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.

23. An electronic device, characterized in that, The electronic device includes an antenna assembly as described in any one of claims 1-22.

24. The electronic device according to claim 23, characterized in that, The electronic device includes two adjacent side frames, and the two clear side frames are respectively adjacent to and spaced apart from the two adjacent side frames.

25. The electronic device according to claim 24, 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 clear side surfaces on the plane of the display screen are located within the black border area.

26. The electronic device according to claim 23, characterized in that, The electronic device further includes a metal cover plate. When the first conductive layer is used as a power supply layer and the second conductive layer is used as a grounding layer, the second conductive layer is electrically connected to the metal cover plate and grounded. Alternatively, the second conductive layer is at least a portion of the metal cover plate.

27. The electronic device according to claim 23, characterized in that, The electronic device includes multiple sets of two adjacent side frames, and the antenna assembly includes multiple antenna assemblies. Each antenna assembly is disposed at one set of two adjacent side frames, and the two clear sides of each antenna assembly are respectively adjacent to and spaced apart from the corresponding set of two adjacent side frames.

28. The electronic device according to any one of claims 23-27, characterized in that, The electronic device includes two adjacent side frames. The electronic device is a tablet-type electronic device, and the two adjacent side frames are any two adjacent side frames of the electronic device.

29. The electronic device according to any one of claims 23-27, characterized in that, The electronic device includes two adjacent side frames. The electronic device is a foldable electronic device. The foldable electronic device 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.

30. The electronic device according to claim 29, characterized in that, The electronic device is a laptop computer. The first body is provided with a display screen, the second body is provided with a keyboard, and the two adjacent side frames are any two adjacent side frames on the second body.

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