Antenna feeding structure, antenna and communication system

Abstract

The present application provides an antenna feeding structure, antenna, and communication device. The feeding structure includes a first cavity having a first signal line and a second cavity having a second signal line. The first signal line includes a first main body and a first elastic bend located at one end of the first main body. The first main body extends along a first direction, the extension direction of the first elastic bend intersects the first direction, and the first elastic bend is capable of deforming in the extension direction of the first main body. A first opening is provided between the first cavity and the second cavity, the first cavity and the second cavity are interconnected through the first opening, the length of the first elastic bend in the second direction is greater than the length of the first cavity in the second direction, and the end of the first elastic bend away from the first main body passes through the first opening and is connected to the second signal line. The first elastic bend of the feeding structure of the present application extends into the first cavity in a compressed state, facilitating installation and saving space and reducing weight of the feeding structure.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to an antenna feeding structure, an antenna, and a communication system. Background Art

[0002] The rapid development of mobile communication technology has placed increasingly stringent technical requirements on the entire communication system architecture. Communication systems must achieve efficient, fast, and high-capacity communications while also being highly integrated, miniaturized, and lightweight. Antennas play a crucial role in communication systems. As the integration of the feed network within base station antennas increases, the requirements for electrical connections between modules within them are also becoming increasingly stringent. In some scenarios, electrical connections between modules in different planes or cavities need to be achieved. Currently, common signal switching solutions in the industry include placing two or three cavities horizontally, with RF transmission lines placed in each cavity. Within each cavity, the RF transmission lines are in the same plane, and a jumper or horizontal stripline is typically used to electrically connect the RF transmission lines in different cavities. This signal switching solution is not suitable for electrical connections in vertical planes, and the cavities required to be larger are not conducive to antenna miniaturization and lightweighting. Summary of the Invention

[0003] The present application provides a feeding structure of an antenna that can save space and reduce weight.

[0004] In the first aspect, the present application provides a feeding structure of an antenna, comprising a first cavity, a second cavity, a first signal line and a second signal line, the first signal line being located in the first cavity, the first signal line comprising a first main body and a first elastic bending portion located at one end of the first main body, the first main body extending along a first direction, the extension direction of the first elastic bending portion intersecting with the first direction, and the first elastic bending portion being capable of deforming toward the extension direction of the first main body; the second signal line being located in the second cavity, a first opening being provided between the first cavity and the second cavity, the first cavity and the second cavity being connected to each other through the first opening, the length of the first elastic bending portion in the second direction being greater than the length of the first cavity in the second direction, the second direction intersecting with the first direction, and the end of the first elastic bending portion away from the first main body passing through the first opening is connected to the second signal line.

[0005] The first signal line and the second signal line are used to transmit signals. The extension direction of the first elastic bending portion intersects with the first direction, which means that the first elastic bending portion is bent toward one side compared to the first main body. In this embodiment, the first elastic bending portion is bent toward the second cavity compared to the first main body. In one embodiment, the extension direction of the first elastic bending portion is perpendicular to the extension direction of the first main body. In some embodiments, the angle between the extension direction of the first elastic bending portion and the extension direction of the first main body is between 60° and 90°. In some embodiments, the angle between the extension direction of the first elastic bending portion and the extension direction of the first main body is between 30° and 60°. The length of the first elastic bend in the second direction is greater than the length of the first cavity in the second direction, so that when the first signal line is placed into the first cavity from one end of the first cavity, the first elastic bend needs to be deformed in the extension direction of the first main body. In other words, the first elastic bend is squeezed into the first cavity in a compressed state, and then continues to advance into the first cavity until the first elastic bend reaches the position of the first opening. The first elastic bend returns to its original shape and is no longer in a compressed state. The end of the first elastic bend away from the first main body passes through the first opening and then into the second cavity. In the present application, the length of the first elastic bend in the second direction is greater than the length of the first cavity in the second direction. In other words, the length of the first cavity in the second direction can be set smaller, thereby saving space and reducing weight.

[0006] The feeding structure of the antenna provided in the present application, on the one hand, is configured by arranging a deformable first elastic bend portion at one end of the first signal line. When the first elastic bend portion is extended into the first cavity in a compressed state, the length of the first cavity in the second direction can be set to be smaller, thereby saving space and reducing weight of the feeding structure; on the other hand, when the first elastic bend portion is pushed into the first opening, the first elastic bend portion that has restored its deformation will be pushed into the first opening when it is pushed to the position of the first opening, thereby facilitating the installation and connection of the first elastic bend portion with the second signal line.

[0007] In one possible implementation, the first main body and the first elastic bend are integrally formed. The first elastic bend can extend through the first opening into the second cavity to connect to the second signal line. Only the end of the first elastic bend away from the first main body needs to be welded to the second signal line, i.e., only one welding point is required, thereby improving signal transmission characteristics and structural strength.

[0008] In one possible implementation, the first elastic bending portion includes a first bending sub-portion and a second bending sub-portion. The first bending sub-portion is located between the second bending sub-portion and the first signal line. The extension direction of the first bending sub-portion intersects the first direction. The second bending sub-portion is electrically connected to the second signal line. The extension direction of the second bending sub-portion and the extension direction of the first bending sub-portion can be at any angle to accommodate second signal lines of different shapes or signal lines in different positions in the second cavity, or accommodate different positions or different planar portions of the second signal line.

[0009] In one possible implementation, the second bend sub-section extends in a direction parallel to the second signal line's extension direction. The second signal line's extension direction refers to the overall extension direction of the second signal line. This can increase the contact area between the second bend sub-section and the second signal line, improving signal transmission stability and structural strength. In one embodiment, the second signal line and the second bend sub-section extend in the first direction. In some embodiments, the second bend sub-section can be larger to increase the connection contact area.

[0010] In one possible implementation, the second signal line includes a connecting portion configured to connect to the first signal line, and the second bent sub-portion extends parallel to the connecting portion. The second bent sub-portion may extend parallel to the connecting portion, but not parallel to the second signal line. This increases the contact area at the signal connection location.

[0011] In one possible implementation, the first elastic bend is provided with a connection hole extending through the first elastic bend, and the second signal line is provided with a protrusion that passes through the connection hole. The connection hole is provided on the second bend sub-component, and the protrusion and the connection hole can be used to secure the second bend sub-component and the second signal line together during welding, thereby preventing the second bend sub-component and the signal line from shaking during welding, which could hinder welding.

[0012] In one possible implementation, the second signal line includes a second main body and a second elastic bend located at one end of the second main body, the second main body extends along a third direction, the extension direction of the second elastic bend intersects with the third direction, the second elastic bend can be deformed in the extension direction of the second main body, and the first elastic bend and the second elastic bend are connected to each other through the first opening. The first signal line and the second signal line are connected through their respective elastic bends to achieve signal connection. In some embodiments, the extension directions of the first cavity and the second cavity are the same, the third direction is parallel to the first direction, or the extension directions of the first signal line and the second signal line are parallel, the extension direction of the second elastic bend is parallel to the extension direction of the first elastic bend, and the two can be superimposed together and then connected by welding. In some embodiments, the third direction may have an angle with the first direction.

[0013] In one possible implementation, the second elastic bend is located within the second cavity, and the connection between the first and second elastic bends is located within the second cavity. The entire second signal line may be located within the second cavity. In some embodiments, a first connecting groove may be formed on the sidewall of the second cavity, and the first and second elastic bends may be welded to the second cavity through the first connecting groove, wherein the groove is formed on a different sidewall than the sidewall where the first opening is located.

[0014] In one possible implementation, the end of the second elastic bend away from the second main body extends through the first opening, and the connection between the first and second elastic bends is located within the first cavity. The end of the second elastic bend away from the second main body is located within the first cavity. In some embodiments, a second connecting groove can be formed in the sidewall of the first cavity, and the first and second elastic bends can be welded to the first cavity through the second connecting groove. The second connecting groove is located on a different sidewall than the first opening.

[0015] In a possible implementation, one end of the second elastic bend portion away from the second main body portion passes through the first opening, and the connection between the first elastic bend portion and the second elastic bend portion is located in the first opening. The first opening is provided on a side wall shared by the first cavity and the second cavity or in an adjacent side wall between the first cavity and the second cavity. In one embodiment, the side wall shared by the first cavity and the second cavity is a common side wall, which is perpendicular to the plane where the first direction and the second direction are located, and the common side wall has a certain thickness. The length of the first opening is the same as the thickness of the common side wall, wherein the length direction of the first opening is the same as the extension direction of the first elastic bend portion. A third connecting groove can be provided on the common side wall shared by the first cavity and the second cavity, and the first elastic bend portion and the second elastic bend portion can be welded in the first opening through the third connecting groove.

[0016] In one possible implementation, the feeding structure also includes a third cavity and a third signal line, the third signal line is located in the third cavity, the third cavity and the second cavity are arranged side by side on one side of the first cavity, a second opening is provided between the first cavity and the third cavity, the first cavity and the third cavity are connected to each other through the second opening, the first signal line also includes a third elastic bending portion located at one end of the first main body, the length of the third elastic bending portion in the second direction is greater than the length of the first cavity in the second direction, and the end of the third elastic bending portion away from the first main body passes through the second opening to be connected to the third signal.

[0017] In some embodiments, the feeding structure also includes a third cavity and a third signal line, the third signal line is located in the third cavity, the third cavity and the second cavity are arranged side by side on one side of the first cavity, and a second opening is provided between the first cavity and the third cavity. The third signal line includes a third main body and a fourth elastic bending portion located at one end of the third main body, and an end of the fourth elastic bending portion away from the third main body passes through the second opening and is connected to the first signal line.

[0018] In the present application, the first cavity, the second cavity and the third cavity may also include functional units in other feeding structures, such as phase shifters, filter units, combiner units, power splitter units or radiation units, and the present application does not impose any restrictions on this. The first cavity, the second cavity and the third cavity may be cavities in the feeding structure itself for accommodating phase shifters, filter units, combiner units, power splitter units or radiation units, that is, cavities possessed by the feeding structure itself. The first elastic bend in the first signal line in the feeding structure of the present application can be applicable to any structure that needs to connect signal lines in two cavities, and is applicable between two cavities with any position deformation or between two cavities with any shape deformation. When there are multiple signal lines and elastic bends, it can be applicable to the connection of signal lines in multiple cavities.

[0019] In the present application, the first elastic bending portion can be formed by bending one end of the first signal line, that is, the material forming the first signal line has a certain deformation amount and can transmit radio frequency signals. Or the first elastic bending portion is formed integrally with a material having deformation ability at one end of the first main body, wherein the material forming the first elastic bending portion not only has a certain deformation amount but also can transmit radio frequency signals. Similarly, the second elastic bending portion can be formed by bending one end of the second signal line, wherein the material forming the second signal line has a certain deformation amount and can transmit radio frequency signals. Or the second elastic bending portion is formed integrally with a material having deformation ability at one end of the second main body, wherein the material forming the second elastic bending portion not only has a certain deformation amount but also can transmit radio frequency signals. The first signal line, the second signal line and the third signal line can be metal strip lines or PCB boards, wherein the metal strip lines can be sheet metal strip lines.

[0020] The position of the first opening can be set according to the actual connection position of the first signal line and the second signal line. In this embodiment, it is set on the common side wall of the first cavity and the second cavity. In some embodiments, an opening can also be set at the corresponding position of the first cavity and the second cavity, and the first elastic bend can pass through the corresponding opening of the first cavity and the second cavity. The first cavity, second cavity, and third cavity in this application can be profile cavities or plastic electroplating cavities.

[0021] In a second aspect, the present application provides an antenna, comprising a feeding structure as described in any one of the above items.

[0022] In a third aspect, the present application provides a communication device, comprising the radio frequency processing unit and the antenna as described above, wherein the radio frequency processing unit is electrically connected to a feeding structure in the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 1 is a schematic structural diagram of a feeding structure of an antenna provided in one embodiment of the present application;

[0024] Figure 2 1 is a schematic diagram of the three-dimensional structure of the feeding structure of the antenna provided in one embodiment of the present application;

[0025] Figure 3 1 is a schematic structural diagram of a first signal line in a feeding structure of an antenna provided in one embodiment of the present application;

[0026] Figure 4 This is a schematic diagram of a first signal line provided by an embodiment of the present application when it is not installed in the first cavity;

[0027] Figure 5This is a schematic diagram of a first signal line provided by an embodiment of the present application when it is not installed in the first cavity;

[0028] Figure 6a is a schematic diagram of a first signal line provided by an embodiment of the present application being pushed into the first cavity;

[0029] Figure 6b This is a schematic diagram of a first signal line and a second signal line connected in a cavity according to an embodiment of the present application;

[0030] Figure 7 This is a schematic diagram of the connection between the first signal line and the second signal line in the prior art;

[0031] Figure 8 This is a schematic diagram of the positions of the first signal line and the second signal line when they are connected, provided by one embodiment of the present application;

[0032] Figure 9 This is a schematic diagram of the positions of the first signal line and the second signal line when they are connected, provided by one embodiment of the present application;

[0033] Figure 10 This is a schematic diagram of the positions of the first signal line and the second signal line when they are connected, provided by one embodiment of the present application;

[0034] Figure 11 1 is a schematic diagram of the three-dimensional structure of the feeding structure of the antenna provided in one embodiment of the present application;

[0035] Figure 12 is a top view of the feeding structure of the antenna provided in one embodiment of the present application;

[0036] Figure 13 This is a schematic structural diagram of a first signal line and a second signal line connected in a second cavity according to an embodiment of the present application;

[0037] Figure 14 This is a schematic structural diagram of a first signal line and a second signal line connected within a first cavity, provided by an embodiment of the present application;

[0038] Figure 15 This is a schematic structural diagram of a first signal line and a second signal line connected in a first opening according to an embodiment of the present application;

[0039] Figure 16 1 is a schematic diagram of the three-dimensional structure of the feeding structure of the antenna provided in one embodiment of the present application;

[0040] Figure 17 is a top view of the feeding structure of the antenna provided in one embodiment of the present application;

[0041] Figure 181 is a schematic structural diagram of a first signal line in a feeding structure of an antenna provided in one embodiment of the present application;

[0042] Figure 19 This is a schematic structural diagram of an antenna provided in one embodiment of the present application;

[0043] Figure 20 It is a structural diagram of a communication device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0044] As used herein, the terms "first," "second," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more.

[0045] In addition, in this article, directional terms such as "upper" and "lower" are defined relative to the orientation of the structure schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the structure.

[0046] See also Figures 1 to 3 In one embodiment of the present application, a feeding structure 10 of an antenna 1 is provided, comprising a first cavity 100 , a second cavity 200 , a first signal line 300 , and a second signal line 400 . The first signal line 300 is located in the first cavity 100. The first signal line 300 includes a first main body 310 and a first elastic bending portion 320 located at one end of the first main body 310. The first main body 310 extends along the first direction A. The extension direction of the first elastic bending portion 320 intersects with the first direction A. The first elastic bending portion 320 can be deformed in the extension direction of the first main body 310; the second signal line 400 is located in the second cavity 200. There is a first opening 110 between the first cavity 100 and the second cavity 200. The first cavity 100 and the second cavity 200 are connected to each other through the first opening 110. The length of the first elastic bending portion 320 in the second direction B is greater than the length of the first cavity 100 in the second direction B. The second direction B intersects with the first direction A. The end of the first elastic bending portion 320 away from the first main body 310 passes through the first opening 110 and is connected to the second signal line 400.

[0047] The first signal line 300 and the second signal line 400 are used to transmit signals. The extension direction of the first elastic bending portion 320 intersects the first direction A, meaning that the first elastic bending portion 320 bends toward one side relative to the first main portion 310. In this embodiment, the first elastic bending portion 320 bends toward the second cavity 200 relative to the first main portion 310. In this embodiment, the extension direction of the first elastic bending portion 320 is perpendicular to the extension direction of the first main portion 310. In some embodiments, the angle between the extension direction of the first elastic bending portion 320 and the extension direction of the first main portion 310 is between 60° and 90°. In some embodiments, the angle between the extension direction of the first elastic bending portion 320 and the extension direction of the first main portion 310 is between 30° and 60°. The length of the first elastic bend portion 320 in the second direction B is greater than the length of the first cavity 100 in the second direction B, so that when the first signal line 300 is placed into the first cavity 100 from one end of the first cavity 100, the first elastic bend portion 320 needs to be deformed in the extension direction of the first main body portion 310. In other words, the first elastic bend portion 320 is squeezed in the first cavity 100 in a compressed state, and then continues to advance into the first cavity 100 until the first elastic bend portion 320 reaches the position of the first opening 110. The first elastic bend portion 320 returns to its original shape and is no longer in a compressed state. The end of the first elastic bend portion 320 away from the first main body portion 310 passes through the first opening 110 and then into the second cavity 200. The first opening 110 is provided on a side wall of the first cavity 100 along the second direction B, and at least a portion of the first cavity 100 and at least a portion of the second cavity 200 are arranged side by side in the second direction B. In this embodiment, the first cavity 100 and the second cavity 200 are arranged side by side and adjacent to each other along the second direction B. In this application, the length of the first elastic bending portion 320 in the second direction B is greater than the length of the first cavity 100 in the second direction B. In other words, the length of the first cavity 100 in the second direction B can be set to be smaller, thereby saving space and reducing weight.

[0048] See also Figures 4 to 6b ,in Figure 4This is a schematic diagram of the structure in which the first signal line 300 is not installed in the first cavity 100, wherein the first cavity 100 and the second cavity 200 both extend along the first direction A, the first cavity 100 and the second cavity 200 are arranged side by side, the first elastic bending portion 320 extends along the second direction B, and the length in the second direction B is greater than the length of the first cavity 100 in the second direction B, the first cavity 100 includes a first opening 102 at one end along the first direction A, the length of the first opening 102 in the second direction B is less than the length of the first elastic bending portion 320 in the second direction B, when the first elastic bending portion 320 has no elasticity or when the first elastic bending portion 320 cannot be deformed in the extension direction of the first main body 310, the first elastic bending portion 320 cannot be placed into the first cavity 100 through the first opening 102. Figure 5 As shown, in the present application, since the first elastic bending portion 320 is elastic, it can be deformed toward the extension line of the first main body portion 310. When the first signal line 300 is placed in the first cavity 100, the first elastic bending portion 320 is squeezed toward the extension direction of the first main body portion 310, so that the length of the compressed first elastic bending portion 320 in the second direction B is less than or equal to the length of the first cavity 100 in the second direction B. At this time, the first elastic bending portion 320 can be pushed into the first cavity 100, and then the first main body portion 310 is pushed into the first cavity 100; as shown in FIG. Figure 6a As shown, when the end of the first elastic bending portion 320 away from the first main body portion 310 reaches the position of the first opening 110, since the first opening 110 is a free and unobstructed space, the distal end of the first elastic bending portion 320 away from the first main body portion 310 extends into the first opening 110, and the first elastic bending portion 320 returns to its original shape. After recovery, the first elastic bending portion 320 is not compressed. At this time, the length of the first elastic bending portion 320 in the second direction B is greater than the length of the first cavity 100 in the second direction B. The end of the first elastic bending portion 320 away from the first main body portion 310 extends into the second cavity 200 through the first opening 110 (as shown in FIG. Figure 6b As shown), when there is no external force acting on the first elastic bending portion 320, the first elastic bending portion 320 is limited in the first opening 110, and then the first elastic bending portion 320 is connected to the second signal line 400, which is convenient for installation.

[0049] The feeding structure 10 of the antenna 1 provided in the present application, on the one hand, is configured by providing a deformable first elastic bending portion 320 at one end of the first signal line 300. When the first elastic bending portion 320 is extended into the first cavity 100 in a compressed state, the length of the first cavity 100 in the second direction B can be set to be smaller, thereby saving space and reducing weight of the feeding structure 10; on the other hand, when the first elastic bending portion 320 is pushed into the first opening 110, the first elastic bending portion 320 that has restored its deformation will be pushed into the first opening 110 when it is pushed to the position of the first opening 110, thereby facilitating the installation and connection between the first elastic bending portion 320 and the second signal line 400.

[0050] In a possible implementation, the first main body portion 310 and the first elastic bending portion 320 are integrally formed. Figure 7 In the conventional case, the two signal lines 301 of the first cavity 100 and the second cavity 200 are electrically connected via a signal connector 101. The two ends of the signal connector 101 are respectively welded to the two signal lines 301 of the first cavity 100 and the second cavity 200, resulting in two welding points O1 and O2. The more welding points there are, the worse the signal transmission characteristics and the structural strength of the signal lines. In this embodiment, however, the first elastic bend 320 can extend into the second cavity 200 through the first opening 110 to connect to the second signal line 400. Only the end of the first elastic bend 320 away from the first main body 310 needs to be welded to the second signal line 400, resulting in a single welding point, which improves signal transmission characteristics and structural strength.

[0051] Please refer again Figure 3 In a possible implementation, the first elastic bending portion 320 includes a first bending sub-portion 321 and a second bending sub-portion 322. The first bending sub-portion 321 is located between the second bending sub-portion 322 and the first signal line 300. The extension direction of the first bending sub-portion 321 intersects with the first direction A, and the second bending sub-portion 322 is electrically connected to the second signal line 400. That is to say, in this embodiment, the first bending sub-portion 321 is deformed toward the extension direction of the first main body portion 310. The extension direction of the second bending sub-portion 322 and the extension direction of the first bending sub-portion 321 can be at any angle to adapt to second signal lines 400 of different shapes or signal lines in cavities at different positions in the second cavity 200, or to adapt to different position parts or different plane parts of the second signal line 400, such as Figure 3 、 Figure 8 、 Figure 9 and Figure 10 Four different implementations are shown.

[0052] Please refer again Figure 1 and Figure 3In one possible implementation, the second bend sub-portion 322 extends in a direction parallel to the second signal line 400. The extension direction of the second signal line 400 refers to the overall extension direction of the second signal line 400. In this embodiment, the contact area between the second bend sub-portion 322 and the second signal line 400 is increased, improving signal transmission stability and structural strength. In this embodiment, the second signal line 400 and the second bend sub-portion 322 extend in the first direction A. In some embodiments, the area of ​​the second bend sub-portion 322 can be larger to increase the connection contact area.

[0053] See also Figure 10 In one possible implementation, the second signal line 400 includes a connecting portion 402 configured to connect to the first signal line 300. The second bent sub-portion 322 extends in a direction parallel to the connecting portion 402. In this embodiment, the second bent sub-portion 322 may extend in a direction not parallel to the second signal line 400, but parallel to the connecting portion 402. This increases the contact area at the signal connection location. In this embodiment, the second bent sub-portion 322 and the connecting portion 402 both extend in a fourth direction D, which forms an angle with the first direction A.

[0054] Please refer again Figure 3 In one possible implementation, the first elastic bend portion 320 is provided with a connection hole 323 that passes through the first elastic bend portion 320. The connection hole 323 facilitates fixing the relative positions of the first signal line 300 and the second signal line 400 during welding. For example, a fixing member can be passed through the connection hole 323 to bring the first signal line 300 and the second signal line 400 into close proximity, thereby preventing the first signal line 300 and the second signal line 400 from shaking during welding.

[0055] See also Figure 11 and Figure 12In one possible implementation, the second signal line 400 includes a second main body 410 and a second elastic bend 420 located at one end of the second main body 410. The second main body 410 extends along a third direction C, and the extension direction of the second elastic bend 420 intersects the third direction C. The second elastic bend 420 is capable of deforming in the extension direction of the second main body 410. The first elastic bend 320 and the second elastic bend 420 are interconnected through the first opening 110. The first signal line 300 and the second signal line 400 are connected via their respective elastic bends to achieve signal connection. In this embodiment, the first cavity 100 and the second cavity 200 extend in the same direction, the third direction C is parallel to the first direction A, or in other words, the extension directions of the first signal line 300 and the second signal line 400 are parallel. The extension direction of the second elastic bend 420 is parallel to the extension direction of the first elastic bend 320. The two can be superimposed and then connected by welding. In some embodiments, the third direction C and the first direction A may form an angle.

[0056] See also Figure 13 In a possible implementation, the second elastic bend 420 is located in the second cavity 200, and the connection between the first elastic bend 320 and the second elastic bend 420 is located in the second cavity 200. In this embodiment, the second signal line 400 is entirely located in the second cavity 200. In this embodiment, a first connecting groove 201 can be opened on the side wall of the second cavity 200, and the first elastic bend 320 and the second elastic bend 420 can be welded in the second cavity 200 through the first connecting groove 201, wherein the side wall of the groove is different from the side wall where the first opening 110 is located. Figure 13 As shown, the side wall where the first connecting groove 201 is located is adjacent to the side wall where the first opening 110 corresponds to the second cavity 200 , and the first elastic bending portion 320 and the second elastic bending portion 420 are welded in the second cavity 200 through the first connecting groove 201 .

[0057] See also Figure 14 In a possible implementation, one end of the second elastic bend portion 420 away from the second main body portion 410 passes through the first opening 110, and the connection between the first elastic bend portion 320 and the second elastic bend portion 420 is located in the first cavity 100. In this embodiment, the end of the second elastic bend portion 420 away from the second main body portion 410 is located in the first cavity 100. In this embodiment, a second connecting groove 103 can be opened on the side wall of the first cavity 100, and the first elastic bend portion 320 and the second elastic bend portion 420 can be welded in the first cavity 100 through the second connecting groove 103. The second connecting groove 103 is different from the side wall where the first opening 110 is located. Figure 14As shown, the side wall where the second connecting groove 103 is located is adjacent to the side wall where the first opening 110 corresponds to the first cavity 100 , and the first elastic bending portion 320 and the second elastic bending portion 420 are welded in the first cavity 100 through the second connecting groove 103 .

[0058] See also Figure 15 In one possible implementation, the end of the second elastic bend portion 420 away from the second main body portion 410 passes through the first opening 110, and the connection between the first elastic bend portion 320 and the second elastic bend portion 420 is located within the first opening 110. The first opening 110 is provided on a side wall shared by the first cavity 100 and the second cavity 200, or in adjacent side walls between the first cavity 100 and the second cavity 200. In this embodiment, the side wall shared by the first cavity 100 and the second cavity 200 is a common side wall 403, which is perpendicular to the plane where the first direction A and the second direction B are located. The common side wall 403 has a certain thickness, and the length of the first opening 110 is the same as the thickness of the common side wall 403, wherein the length direction of the first opening 110 is the same as the extension direction of the first elastic bending portion 320. A third connecting groove 404 can be opened on the common side wall 403 shared by the first cavity 100 and the second cavity 200, and the first elastic bending portion 320 and the second elastic bending portion 420 can be welded in the first opening 110 through the third connecting groove 404.

[0059] See also Figures 16 to 18 In a possible implementation, the feeding structure 10 further includes a third cavity 500 and a third signal line 600. The third signal line 600 is located in the third cavity 500. The third cavity 500 and the second cavity 200 are arranged side by side on one side of the first cavity 100. A second opening 120 (such as Figure 17 As shown in FIG, the first cavity 100 and the third cavity 500 are interconnected through the second opening 120. The first signal line 300 further includes a third elastic bending portion 330 located at one end of the first main body 310. The length of the third elastic bending portion 330 in the second direction B is greater than the length of the first cavity 100 in the second direction B. The end of the third elastic bending portion 330 away from the first main body 310 passes through the second opening 120 and is connected to the third signal line 600. In this embodiment, the third elastic bending portion 330 and the first elastic bending portion 320 are located at the same end of the first main body 310 (as shown in FIG. Figure 18 That is, one end of the first signal line 300 is connected to the second signal line 400 and the third signal line 600 through the first elastic bending portion 320 and the third elastic bending portion 330 respectively.

[0060] See also Figure 17 and Figure 18In a possible implementation, the second bending sub-portion 322 is provided with a connection hole 323 that passes through the second bending sub-portion 322, and the second signal line 400 is provided with a convex portion 401 (such as Figure 17 As shown), the protrusion 401 passes through the connecting hole 323. In this embodiment, the connecting hole 323 is provided on the second bending sub-component 322 (as shown). Figure 18 As shown), the protrusion 401 and the connection hole 323 can be used to fix the second bending sub-portion 322 and the second signal line 400 together when welding the two, so as to avoid the second bending sub-portion 322 and the second signal line 400 shaking during the welding process, which is not conducive to welding.

[0061] In some embodiments, the feeding structure 10 further includes a third cavity 500 and a third signal line 600. The third signal line 600 is located within the third cavity 500. The third cavity 500 and the second cavity 200 are arranged side by side on one side of the first cavity 100. A second opening 120 is provided between the first cavity 100 and the third cavity 500. The third signal line 600 includes a third main body and a fourth elastic bend located at one end of the third main body. The end of the fourth elastic bend away from the third main body passes through the second opening 120 and is connected to the first signal line 300. That is, in this embodiment, the third signal line 600 is connected to the first signal line 300 via the fourth elastic bend, and the second signal line 400 is connected to the first signal line 300 via the first elastic bend 320.

[0062] In the present application, the first cavity 100, the second cavity 200 and the third cavity 500 may also include functional units in other feeding structures, such as phase shifters, filtering units, combining units, power splitting units or radiating units, and the present application does not impose any restrictions on this. The first cavity 100, the second cavity 200 and the third cavity 500 may be cavities in the feeding structure 10 that are used to accommodate phase shifters, filtering units, combining units, power splitting units or radiating units, that is, cavities possessed by the feeding structure itself. The first elastic bending portion 320 in the first signal line 300 in the feeding structure 10 of the present application can be applicable to any structure that needs to connect signal lines in two cavities, and is applicable between two cavities with any position deformation or between two cavities with any shape deformation. When there are multiple signal lines and elastic bending portions, it can be applicable to the connection of signal lines in multiple cavities.

[0063] In the present application, the first elastic bend 320 can be formed by bending one end of the first signal line 300, meaning that the material forming the first signal line 300 has a certain degree of deformation and can transmit RF signals. Alternatively, the first elastic bend 320 can be formed integrally with a deformable material at one end of the first main body 310, wherein the material forming the first elastic bend 320 not only has a certain degree of deformation but also can transmit RF signals. Similarly, the second elastic bend 420 can be formed by bending one end of the second signal line 400, wherein the material forming the second signal line 400 has a certain degree of deformation and can transmit RF signals. Alternatively, the second elastic bend 420 can be formed integrally with a deformable material at one end of the second main body 410, wherein the material forming the second elastic bend 420 has a certain degree of deformation and can also transmit RF signals. The first signal line 300, the second signal line 400, and the third signal line 600 can be metal strips or PCB boards, wherein the metal strips can be sheet metal strips.

[0064] The position of the first opening 110 can be set according to the actual connection position of the first signal line 300 and the second signal line 400. In this embodiment, it is set on the common side wall of the first cavity 100 and the second cavity 200. In some embodiments, an opening can also be set at the corresponding position of the first cavity 100 and the second cavity 200, and the first elastic bending portion 320 can pass through the corresponding openings of the first cavity 100 and the second cavity 200. The first cavity 100, the second cavity 200, and the third cavity 500 in this application can be profile cavities or plastic electroplating cavities.

[0065] See also Figure 19 In one embodiment of the present application, an antenna 1 is provided, which includes a feeding structure 10 as in any of the above embodiments. The antenna 1 also includes a reflector 20 and a radome 30, and the feeding structure 10 is located between the reflector 20 and the radome 30. In this embodiment, the feeding structure 10 is part of the feeding network in the antenna 1, wherein the feeding network also includes a phase-shifting power splitter unit and a radiation unit, etc. The reflector 20 is used to reflect signals, improve the sensitivity of the antenna 1 in transmitting or receiving signals, and focus the reflected signals on the receiving point of the antenna 1, which not only greatly enhances the receiving or transmitting capabilities of the antenna 1, but also blocks or shields the interference of other radio waves from the back side of the reflector 20 on the signal. The material of the reflector 20 can be metal. The radome 30 has good electromagnetic wave penetration characteristics and can withstand harsh external environments to protect the antenna 1 from external environmental influences. In some embodiments, one of the side walls of the first cavity 100 and the second cavity 200 is used as the reflective plate 20 , or one of the side walls of the first cavity 100 , the second cavity 200 and the third cavity 500 is used as the reflective plate 20 .

[0066] See also Figure 20 An embodiment of the present application further provides a communication device 2, comprising an antenna 1 as in any of the above embodiments, wherein the antenna 1 may be multiple, and the multiple antennas 1 are distributed in an array, each antenna 1 has a feeding network, and the feeding network in each antenna 1 may correspond to different frequency bands, and the radiation directions corresponding to the same frequency band in the antenna 1 are different, wherein the feeding network includes a feeding structure 10 as in the above embodiment.

[0067] In some embodiments, the communication device 2 further includes: a radio frequency processing unit 3 and a baseband processing unit 4. The baseband processing unit 4 is connected to the feeding structure 10 in the antenna 1 through the radio frequency processing unit 3; the antenna 1 is used to transmit the received wireless signal to the radio frequency processing unit 3, or convert the transmission signal of the radio frequency processing unit 3 into an electromagnetic wave and send it out. The radio frequency processing unit 3 is electrically connected to the feeding structure 10 in the antenna 1. The radio frequency processing unit 3 is used to perform frequency selection, amplification, and down-conversion processing on the wireless signal received by the antenna 1, and convert it into an intermediate frequency signal or a baseband signal and send it to the baseband processing unit 4, or to up-convert and amplify the baseband signal or intermediate frequency signal sent by the baseband processing unit 4 and send it out through the antenna. The baseband processing unit 4 is used to process the intermediate frequency signal or baseband signal sent by the radio frequency processing unit 3.

[0068] In one embodiment, the RF processing unit 3 is integrally provided with the antenna 1, which is mounted on a pole 5 or a tower. The RF processing unit 3 is integrally provided with the antenna 1, and the baseband processing unit 4 is located at the distal end of the antenna 1 and is connected to the RF processing unit 3 via a cable 6. In some embodiments, the RF processing unit 3 and the baseband processing unit 4 may be located at the distal end of the antenna 2.

[0069] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An antenna feeding structure, characterized in that: The device comprises a first cavity, a second cavity, a first signal line, and a second signal line, wherein the first signal line is located in the first cavity, the first signal line comprises a first main body and a first elastic bending portion located at one end of the first main body, the first main body extends along a first direction, and the extension direction of the first elastic bending portion intersects with the first direction; The second signal line is located in the second cavity, a first opening is defined between the first cavity and the second cavity, and the first cavity and the second cavity are connected to each other through the first opening; The length of the first elastic bending portion in the second direction is greater than the length of the first cavity in the second direction, the second direction intersects with the first direction, the first elastic bending portion can be deformed in the extension direction of the first main body, and the first elastic bending portion is used to move toward the first opening in the first cavity in a deformed state until the end of the first elastic bending portion away from the first main body passes through the first opening and is connected to the second signal line.

2. The feeding structure according to claim 1, characterized in that: The first main body portion and the first elastic bending portion are integrally formed.

3. The feeding structure according to claim 1, characterized in that: The first elastic bending portion includes a first bending sub-portion and a second bending sub-portion, the first bending sub-portion is located between the second bending sub-portion and the first signal line, the extension direction of the first bending sub-portion intersects with the first direction, and the second bending sub-portion is electrically connected to the second signal line.

4. The feeding structure according to claim 3, characterized in that: An extending direction of the second bending sub-portion is parallel to an extending direction of the second signal line.

5. The feeding structure according to claim 1, characterized in that: A connection hole is provided on the first elastic bending portion and passes through the first elastic bending portion. A convex portion is provided on the second signal line and passes through the connection hole.

6. The feeding structure according to any one of claims 1 to 5, characterized in that: The second signal line includes a second main body and a second elastic bent portion located at one end of the second main body, the second main body extends along a third direction, the extension direction of the second elastic bent portion intersects with the third direction, the second elastic bent portion can be deformed toward the extension direction of the second main body, and the first elastic bent portion and the second elastic bent portion are connected to each other through the first opening.

7. The feeding structure according to claim 6, characterized in that: The second elastic bending portion is located in the second cavity, and the connection between the first elastic bending portion and the second elastic bending portion is located in the second cavity.

8. The feeding structure according to claim 6, characterized in that: One end of the second elastic bending portion away from the second main body portion passes through the first opening, and a connection between the first elastic bending portion and the second elastic bending portion is located in the first cavity.

9. The feeding structure according to claim 6, characterized in that: One end of the second elastic bending portion away from the second main body portion passes through the first opening, and a connection between the first elastic bending portion and the second elastic bending portion is located in the first opening.

10. The feeding structure according to any one of claims 1-5 and 7-9, characterized in that: The feeding structure also includes a third cavity and a third signal line. The third signal line is located in the third cavity. The third cavity and the second cavity are arranged side by side on one side of the first cavity. A second opening is provided between the first cavity and the third cavity. The first cavity and the third cavity are connected to each other through the second opening. The first signal line also includes a third elastic bending portion located at one end of the first main body. The length of the third elastic bending portion in the second direction is greater than the length of the first cavity in the second direction. The end of the third elastic bending portion away from the first main body passes through the second opening and is connected to the third signal.

11. The feeding structure according to claim 6, characterized in that: The feeding structure also includes a third cavity and a third signal line. The third signal line is located in the third cavity. The third cavity and the second cavity are arranged side by side on one side of the first cavity. A second opening is provided between the first cavity and the third cavity. The first cavity and the third cavity are connected to each other through the second opening. The first signal line also includes a third elastic bending portion located at one end of the first main body. The length of the third elastic bending portion in the second direction is greater than the length of the first cavity in the second direction. The end of the third elastic bending portion away from the first main body passes through the second opening and is connected to the third signal.

12. An antenna, characterized in that: The antenna comprises the feeding structure according to any one of claims 1 to 11.

13. A communication device, characterized in that: The communication device comprises a radio frequency processing unit and the antenna according to claim 12 , wherein the radio frequency processing unit is electrically connected to a feeding structure in the antenna.

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