Feed network, antenna device, and base station system

Abstract

The present application relates to a feed network, an antenna device, and a base station system. The feed network comprises a ground plane, a main line and a coupling line; the main line is coupled to the ground plane; the main line comprises an input port and at least one main line output port; along a first direction of the main line, the coupling line is coupled to the main line by means of an open end, and the coupling line and the main line are spaced apart; the coupling line comprises the open end and at least one coupling line output port. The feed network has a simple structure, good manufacturability, and a high degree of freedom of design, and the layout space occupied by the feed network can be reduced, thereby facilitating the layout of the feed network in the antenna device. Moreover, it is easier to adjust the phase slopes of signals at the main line output port and the coupling line output port, thereby reducing the phase slope differences of signals between main line output ports and between coupling line output ports, effectively improving the antenna gain.

Description

Feed network, antenna device and base station system

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on November 21, 2023, with application number 202311563130.1 and invention name “Feeding network, antenna device and base station system”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a feeding network, an antenna device, and a base station system. Background Art

[0003] Mobile communications technology has made tremendous progress in recent years. Base station antennas, as a crucial component of mobile communications, have also evolved alongside this development, moving from single- and dual-band to multi-band and even larger-scale, multiple-input, multiple-output (Massive Multiple Input Multiple Output, Massive MIMO) base station antennas. Currently, as antenna arrays become increasingly complex, the layout space for feed networks is shrinking. This results in significant coupling between feed networks, significantly impacting radiation performance and reducing efficiency, increasing energy consumption across the entire communications system.

[0004] Application Contents

[0005] In view of this, the present application provides a feeding network, an antenna device, and a base station system to reduce the layout space occupied by the feeding network, thereby facilitating the layout of the feeding network in the antenna device.

[0006] A first aspect of an embodiment of the present application provides a feeding network, comprising a floor, a main line, and a coupling line, wherein the main line is coupled to the floor, the main line comprises an input port and at least one main line output port, and along a first direction of the main line, the coupling line is coupled to the main line, and the coupling line is spaced apart from the main line, and the coupling line comprises an open end and at least one coupling line output port.

[0007] In the present application, the main line and the coupling line have the same reference ground, so that the generation of resonance during signal transmission can be avoided, thereby improving the antenna gain of the antenna and reducing insertion loss and radiation loss. The structure of the feeding network is simple and manufacturability is good. The main line and the coupling line are located in different planes perpendicular to the first direction, so that the space occupied by the main line and the coupling line on the plane perpendicular to the first direction can be reduced, thereby reducing the layout space occupied by the feeding network, which is beneficial to the layout of the feeding network in the antenna device. In addition, along the first direction of the main line, the coupling line and the main line are spaced apart, which can facilitate the adjustment of the spacing distance between the main line and the coupling line, thereby reducing the wiring density and reducing the mutual coupling between other feeding networks or antenna units and the main line or coupling line, thereby improving the antenna gain.

[0008] Furthermore, since there is no DC connection between the main line and the coupled line, the phase slope of the signal at the main line output port and the coupled line output port can be adjusted to improve antenna gain through inter-line coupling, such as the length, width, shape, or spacing between the main line and the coupled line. This further reduces the structural complexity of the feed network and increases the design freedom of the feed network. Furthermore, by adjusting the phase slope of the signal at the main line output port and the coupled line output port through inter-line coupling between the main line and the coupled line, it is easier to reduce the phase slope difference between the main line output port and the coupled line output port, reducing the number of phase jump cycles between the main line output port and the coupled line output port, thereby effectively improving antenna gain.

[0009] In one possible design, illustratively, the feed network includes a plurality of coupled lines, and along a first direction of the main line, the plurality of coupled lines are located on the same side of the main line. Exemplarily, the feed network includes a plurality of coupled lines, and along the first direction of the main line, the plurality of coupled lines are located on both sides of the main line.

[0010] By setting multiple coupling lines on one or both sides of the feed network, the design freedom of the feed network is further improved, meeting the layout requirements of the feed network in different antenna devices, as well as the phase slope adjustment requirements of each main line output port and each coupling line output port, thereby improving the antenna gain.

[0011] In a possible design, along the first direction of the main line, at least two of the plurality of coupling lines are arranged at intervals.

[0012] By adjusting the positions of multiple coupling lines relative to the main line, the phase slopes of each main line output port and each coupled line output port can be adjusted, thereby reducing the phase slope difference between each main line output port and each coupled line output port, reducing the number of phase jump cycles, improving antenna gain, and further increasing the design freedom of the feed network to meet the layout requirements of the feed network in different antenna devices.

[0013] In one possible design, at least two of the multiple coupling lines are located in the same plane in a first direction perpendicular to the main line. Along the second and / or third directions of the main line, the multiple coupling lines located in the same plane are spaced apart, with the first, second, and third directions of the main line being perpendicular to each other. By spacing the multiple coupling lines located in the same plane, mutual coupling between the lines can be reduced, thereby improving antenna gain.

[0014] In a possible design, along the first direction of the main line, a projection of the main line and a projection of the coupling line at least partially overlap, thereby further reducing the occupied space of the feeding network.

[0015] In one possible design, the input port is provided with one, so that the feeding network can realize the function of converting one input signal into multiple signal outputs, thereby improving the signal transmission efficiency, and the structure of the feeding network is simpler, which is more conducive to the layout of the feeding network in the antenna device.

[0016] In a possible design, the feeding network includes a plurality of the main lines, which are connected in parallel and share one input port, thereby forming a simple 1toN (N≥2) feeding network.

[0017] In a possible design, the main line is a straight line, a curve or a broken line, or a combination of two or more.

[0018] By adjusting the shape of the main line, the phase slope of each main line output port and each coupled line output port can be adjusted, thereby reducing the phase slope difference between each main line output port and each coupled line output port, reducing the number of phase jump cycles, improving antenna gain, and further improving the design freedom of the feed network to meet the layout requirements of the feed network in different antenna devices.

[0019] In a possible design, the coupling line is a straight line, a curve, or a broken line, or a combination of two or more.

[0020] By adjusting the shape of the coupling line, the phase slope of each main line output port and each coupled line output port can be adjusted, thereby reducing the phase slope difference between each main line output port and each coupled line output port, reducing the number of phase jump cycles, improving antenna gain, and further improving the design freedom of the feed network to meet the layout requirements of the feed network in different antenna devices.

[0021] In one possible design, the floor is illustratively located on one side of the main line along a first direction of the main line. In another example, the floor is located on at least one side of the main line along a second direction of the main line. This structure can increase the design freedom of the feed network and further facilitate the layout of the feed network in the antenna device.

[0022] In one possible design, the feeding network further includes a supporting medium, and along the first direction of the main line, the supporting medium includes a first surface and a second surface relative to each other, one of the first surface and the second surface is provided with the main line, and the other is provided with the coupling line.

[0023] The supporting medium can fix the main line and the coupling line and maintain the stability of their relative positions, which is conducive to the miniaturization design of the feeding network and further reduces the space occupied by the feeding network. The setting of the supporting medium can better constrain electromagnetic waves, which is conducive to the stable propagation of signals and the improvement of antenna gain.

[0024] In a second aspect, an embodiment of the present application provides an antenna device, which includes the feed network described above. Since the feed network has the above technical effects, the antenna device including the feed network should also have corresponding technical effects, which will not be described in detail here.

[0025] The third aspect of the present application provides a base station system, which includes the antenna device described above. Since the antenna device has the above technical effects, the base station system including the antenna device should also have corresponding technical effects, which will not be described in detail here.

[0026] It should be understood that the foregoing general description and the following detailed description are merely illustrative and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] FIG1 is a schematic structural diagram of a base station system provided by the present application in some embodiments;

[0029] FIG2 is a schematic structural diagram of the antenna device in FIG1 in some embodiments;

[0030] FIG3 is a diagram illustrating an example of a connection between a feed network and an antenna unit in an antenna device in one embodiment;

[0031] FIG4 is a schematic structural diagram of a feeding network provided in a first embodiment of the present application;

[0032] FIG5 is a side view of FIG4;

[0033] FIG6 is a top view of FIG4;

[0034] FIG7 is a schematic structural diagram of a floor provided in this application;

[0035] FIG8 is a schematic structural diagram of a feeding network provided in a second embodiment of the present application;

[0036] FIG9 is a schematic structural diagram of a feeding network provided by a third embodiment of the present application;

[0037] FIG10 is a side view of FIG9;

[0038] FIG11 is a front view of FIG9;

[0039] FIG12 is a schematic structural diagram of a feeding network provided in a fourth embodiment of the present application;

[0040] FIG13 is a side view of FIG12;

[0041] FIG14 is a schematic structural diagram of a feeding network provided in a fifth embodiment of the present application;

[0042] FIG15 is a schematic structural diagram of a feeding network provided in a sixth embodiment of the present application;

[0043] FIG16 is a schematic structural diagram of a feeding network provided by a seventh embodiment of the present application;

[0044] FIG17 is a schematic structural diagram of a feeding network provided in an eighth embodiment of the present application;

[0045] FIG18 is a side view of FIG17 .

[0046] Reference numerals:

[0047] 100-antenna device;

[0048] 101-antenna array;

[0049] 102-feeding network;

[0050] 103-Phase shifter;

[0051] 104- transmission network;

[0052] 105-combiner;

[0053] 106-antenna connector;

[0054] 107-radome;

[0055] 108-antenna unit;

[0056] 200-antenna adjustment bracket;

[0057] 300-fixed rod;

[0058] 400-Joint seal;

[0059] 500-grounding device;

[0060] 1- Main line;

[0061] 11-input port;

[0062] 12-Main line output port

[0063] 2- coupling line;

[0064] 21-open end;

[0065] 22-coupling line output port;

[0066] 3- Floor;

[0067] 31-gap;

[0068] 4-support medium;

[0069] 41- first surface;

[0070] 42- second surface;

[0071] X-third direction;

[0072] Y-second direction;

[0073] Z - first direction.

[0074] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0075] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0076] In the description of this application, unless otherwise specified or limited, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0077] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0078] It should be understood that the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. Furthermore, the character " / " in this document generally indicates an "or" relationship between the associated objects.

[0079] The following explains the terms that may appear in the embodiments of the present application.

[0080] Coupling: can be understood as direct coupling and / or indirect coupling, and "coupling connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be referred to as "electrical connection", which is understood as the physical contact and electrical conduction between components; it can also be understood as the form in which different components in the circuit structure are connected through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals; "indirect coupling" can be understood as two conductors being electrically conductive in an airless / non-contact manner. In one embodiment, indirect coupling can also be referred to as capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitance through coupling between the gap between two conductive parts.

[0081] Relative / relative setting: The relative setting of A and B may refer to A and B being face to face (opposite to, or face to face).

[0082] Ground / floor: can generally refer to at least a portion of any grounding layer, grounding plate, or grounding metal layer in an electronic device (such as a mobile phone), or at least a portion of any combination of any of the above grounding layers, grounding plates, or grounding components, etc. "Ground / floor" can be used for grounding components in an electronic device. In one embodiment, the "ground / floor" can be the grounding layer of the circuit board of the electronic device, or it can be the grounding plate formed by the middle frame of the electronic device or the grounding metal layer formed by the metal film under the screen. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12 to 14-layer board having 8, 10, 12, 13, or 14 layers of conductive material, or an element separated and electrically insulated by a dielectric layer or insulating layer such as fiberglass, polymer, etc. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer, and a routing layer, and the routing layer and the grounding layer are electrically connected through vias. In one embodiment, components such as a display, touch screen, input buttons, transmitter, processor, memory, battery, charging circuit, and system-on-chip (SoC) structures can be mounted on or connected to a circuit board, or electrically connected to a trace layer and / or ground layer in the circuit board. For example, a radio frequency source can be located on a trace layer.

[0083] Open end: In some embodiments, the open end is, for example, relative to the ground, and the open end is not grounded, or is, for example, relative to other conductors, and the open end is not electrically connected to other conductors.

[0084] The limitations such as collinearity, coaxiality, coplanarity, symmetry (for example, axisymmetry, or center symmetry, etc.), parallelism, perpendicularity, and sameness (for example, same length, same width, etc.) mentioned in the embodiments of the present application are all for the current level of technology, rather than absolutely strict definitions in a mathematical sense. There may be a deviation of less than a predetermined threshold value (for example, 1 mm, 0.5 m, or 0.1 mm) in the line width direction between two collinear radiating branches or the edges of two antenna units. There may be a deviation of less than a predetermined threshold value (for example, 1 mm, 0.5 m, or 0.1 mm) in the direction perpendicular to their coplanar planes between two coplanar radiating branches or the edges of two antenna units. There may be a deviation of a predetermined angle (for example, ±5°, ±10°) between two antenna units that are parallel or perpendicular to each other.

[0085] The present application provides a base station system, an antenna device 100 and a feeding network 102. The base station system, the antenna device 100 and the antenna array 101 can be applied to fields such as radar, broadcasting and communication.

[0086] Please refer to Figure 1, which is a schematic diagram of the structure of a base station system provided in some embodiments of this application. As shown in Figure 1, the base station system is composed of an antenna device 100, an antenna adjustment bracket 200, a fixing rod 300, a joint seal 400, a grounding device 500, etc. The base station system is an interface device for wireless communication, capable of exchanging information with communication terminals in the area.

[0087] Please refer to Figures 2 and 3. Figure 2 is a schematic diagram of the structure of the antenna device 100 in Figure 1 in some embodiments, and Figure 3 is an exemplary diagram of the connection between the feed network 102 and the antenna elements 108 in the antenna device 100 in one embodiment. As shown in Figure 2, the antenna device 100 comprises an antenna array 101, a phase shifter 103, a transmission network 104 or a calibration network, a combiner 105 or an undulator, and a radome 107. The antenna array 101 includes multiple antenna elements 108, which receive or transmit radio frequency signals via a feed network 102 composed of the phase shifters 103, the transmission network 104, and the combiner 105. As shown in Figure 3, the feed network 102 can feed radio frequency signals to the antenna elements 105 in the antenna array 101 at a predetermined amplitude and phase. Alternatively, the feed network 102 can transmit the radio signals received by the antenna array 101 at a predetermined amplitude and phase via the antenna connector 106 to the signal processing unit of the base station system. The antenna cover 107 is a structural component that can protect internal components from the influence of the external environment. It has good electromagnetic wave penetration characteristics in terms of electrical performance and can withstand the effects of harsh external environments in terms of mechanical performance.

[0088] Please refer to FIG. 4 to FIG. 6 , FIG. 4 is a structural diagram of a feeding network provided in a first embodiment of the present application, FIG. 5 is a side view of FIG. 4 , and FIG. 6 is a top view of FIG. 4 .

[0089] As shown in Figure 4, the feeding network includes a floor 3, a main line 1 and a coupling line 2. The main line 1 is coupled to the floor 3, and the coupling line 2 is coupled to the main line 1 for signal transmission, so that the main line 1 and the coupling line 2 have the same reference ground, thereby avoiding the generation of resonance during signal transmission, thereby improving the antenna gain of the antenna and reducing insertion loss and radiation loss.

[0090] The floor 3 can be made of a conductive material. In one embodiment, the conductive material can be any of the following: copper, aluminum, stainless steel, brass, and alloys thereof; copper foil on an insulating substrate; aluminum foil on an insulating substrate; gold foil on an insulating substrate; silver-plated copper; silver-plated copper foil on an insulating substrate; silver foil and tin-plated copper on an insulating substrate; cloth impregnated with graphite powder; a graphite-coated substrate; a copper-plated substrate; a brass-plated substrate; and an aluminum-plated substrate. Of course, the floor 3 can also be made of other conductive materials, which are not limited here.

[0091] For ease of understanding, the thickness direction of the main line 1 is defined as the first direction Z, the width direction of the main line 1 is defined as the second direction Y, and the length direction of the main line 1 is defined as the third direction X. The first direction Z, the second direction Y and the third direction X of the main line are roughly perpendicular to each other.

[0092] As shown in FIG4 , along a first direction Z of the main line 1, the main line 1 includes relative upper and lower sides, along a second direction Y of the main line 1, the main line 1 includes relative left and right sides, and along a third direction X of the main line 1, the main line 1 includes relative front and rear sides. Based on actual needs, the floor 3 can be flexibly arranged on the upper, lower, left, right, front, or rear sides of the main line 1 to increase the design freedom of the feed network 102 and further facilitate the layout of the feed network 102 in the antenna device 100.

[0093] Illustratively, along a first direction Z of the main line 1, the floor 3 is located on at least one side of the main line 1. For example, as shown in FIG4 , the floor 3 may be located on the lower side of the main line 1, and / or the floor 3 may also be located on the upper side of the main line 1. Illustratively, along a second direction Y of the main line 1, the floor 3 is also located on at least one side of the main line 1. For example, the floor 3 may be located on the left and / or right side of the main line 1. Illustratively, the floor 3 may also be located on at least one side of the main line 1 along the first direction Z and at least one side of the main line 1 along the second direction Y. For example, the floor 3 may be located on the upper and / or lower side of the main line 1, and on the left and / or right side of the main line 1. Illustratively, along a third direction X of the main line 1, the floor 3 is located on at least one side of the main line 1. For example, the floor 3 may be located on the front and / or rear side of the main line 1. Exemplarily, the floor 3 may also be simultaneously located on at least one side of the main line 1 along the first direction Z and at least one side along the third direction X. For example, the floor 3 may be simultaneously located on the upper side and / or lower side of the main line 1, and at the front side and / or rear side of the main line 1. Exemplarily, the floor 3 may also be simultaneously located on at least one side of the main line 1 along the second direction Y and at least one side along the third direction X. For example, the floor 3 may be simultaneously located on the left side and / or right side of the main line 1, and at the front side and / or rear side of the main line 1. Exemplarily, the floor 3 may also be simultaneously located on at least one side of the main line 1 along the first direction Z, at least one side along the second direction Y, and at least one side along the third direction X. For example, please refer to Figure 7, which is a structural schematic diagram of a floor provided in the present application. As shown in Figure 7, the floor 3 may be a structure having a cavity, and the main line 1 and the coupling line 2 are located in the cavity of the floor 3. The floor 3 is simultaneously located on the upper side, lower side, left side, right side, front side, and rear side of the main line 1, thereby reducing the radiation loss of the signal. At the same time, holes or gaps 31 may be provided on the side walls of the floor 3 along the third direction X of the main line 1 to facilitate signal transmission.

[0094] The structure and position of the floor 3 can be set according to actual needs, as long as it can ensure that the main line 1 and the coupling line 2 have the same reference ground, and no limitation is imposed here.

[0095] As shown in Figure 4, main line 1 includes an input port 11 and at least one main line output port 12, and coupled line 2 includes an open end 21 and at least one coupled line output port 22. During signal transmission, a signal can be input to main line 1 via input port 11 of main line 1, transmitted through main line 1 to main line output port 12 for output. Simultaneously, at least a portion of the signal transmitted on main line 1 can be coupled to coupled line 2 via open end 21 of coupled line 2, transmitted through the coupled line to coupled line output port 22 for output.

[0096] 5 and 6 , along the first direction Z of the main line 1 , the coupling line 2 is spaced apart from the main line 1 , and the projection of the main line 1 at least partially overlaps with the projection of the coupling line 2 .

[0097] In this embodiment, as shown in Figures 4 to 6, the feed network 102 has a simple structure and good manufacturability. The main line 1 and the coupling line 2 are located in different planes perpendicular to the first direction Z. This reduces the space occupied by the main line 1 and the coupling line 2 in the plane perpendicular to the first direction Z, thereby reducing the layout space occupied by the feed network 102, thereby facilitating the layout of the feed network 102 in the antenna device 100. Furthermore, along the first direction Z of the main line 1, the coupling line 2 is spaced apart from the main line 1, which facilitates adjustment of the spacing between the main line 1 and the coupling line 2, thereby reducing routing density and reducing mutual coupling between other feed networks 102 or antenna units 108 and the main line 1 or the coupling line 2, thereby improving antenna gain.

[0098] In addition, if the phase slope difference between the signals at each main line output port 12 and each coupled line output port 22 is large, it will affect the performance of the antenna. In the embodiment of the present application, since there is no DC connection between the main line 1 and the coupled line 2, the phase slope of the signal at the main line output port 12 and the coupled line output port 22 can be adjusted to improve the antenna gain through inter-line coupling such as the length, width, shape, or spacing between the main line 1 and the coupled line 2, thereby further reducing the structural complexity of the feed network 102 and improving the design freedom of the feed network 102. Moreover, by adjusting the phase slope of the signal at the main line output port 12 and the coupled line output port 22 through inter-line coupling between the main line 1 and the coupled line 2, it is easier to reduce the phase slope difference between the signals at each main line output port 12 and each coupled line output port 22, reduce the number of phase jump cycles between the signals at each main line output port 12 and each coupled line output port 22, and thus effectively improve the antenna gain.

[0099] Furthermore, as shown in Figures 5 and 6 , along the first direction Z of the main line 1, the projection of the main line 1 and the projection of the coupling line 2 at least partially overlap, thereby further reducing the space occupied by the feed network 102, for example. Of course, in other embodiments, the projections of the main line 1 and the coupling line 2 in the first direction Z may also be staggered, thereby further increasing the design freedom of the feed network 102 and facilitating more flexible layout of the feed network 102 in the antenna device 100.

[0100] Furthermore, as shown in FIG4 , the main line 1 has only one input port 11, so that the feed network 102 can convert one input signal into multiple output signals, thereby improving the signal transmission efficiency. In addition, the structure of the feed network 102 is simpler, which is more conducive to the layout of the feed network 102 in the antenna device 100.

[0101] Among them, the number of main line output ports 12 of the main line 1 can be one, two, three, etc., and the number of coupled line output ports 22 of the coupled line 2 can be one, two, three, etc., so that the feeding network 102 can have more output ports, thereby realizing a simple 1toN (N≥2) feeding network 102. The specific settings can be made according to actual needs and are not limited here.

[0102] In a specific embodiment, the feeding network 102 may include a main line 1 and a coupled line 2 . Along the first direction Z of the main line 1 , the coupled line 1 is located on one side of the main line 1 .

[0103] In the specific embodiment shown in FIG4 , the feed network 102 includes a main line 1 and a coupled line 2. The main line 1 is provided with an input port 11 and a main line output port 12. The coupled line 2 is provided with an open end 21 and a coupled line output port 22. The coupled line 2 is coupled to the main line 1 via the open end 21, thereby forming a simple 1-to-2 feed network 102. Of course, according to actual needs, two, three, or more main line output ports 12 and / or coupled line output ports 22 can be provided on the main line 1 and / or coupled line 2 to achieve a simpler 1-to-N (N ≥ 2) feed network 102. This is not limited here.

[0104] For example, along the first direction Z of the main line 1, as shown in FIG4 , the coupling line 2 can be located on the upper side of the main line 1, that is, the coupling line 2 is located on the side of the main line 1 facing away from the floor 3. Alternatively, for example, referring to FIG8 , which is a schematic structural diagram of the feeding network provided in the second embodiment of the present application, as shown in FIG8 , the coupling line 2 can also be located on the lower side of the main line 1, that is, the coupling line 2 is arranged between the main line 1 and the floor 3. The coupling line 2 can be specifically configured according to actual needs to further enhance the design freedom of the feeding network 102.

[0105] Please refer to Figures 9 to 14, Figure 9 is a structural diagram of a feeding network provided in the third embodiment of the present application, Figure 10 is a side view of Figure 9, Figure 11 is a front view of Figure 9, Figure 12 is a structural diagram of a feeding network provided in the fourth embodiment of the present application, Figure 13 is a side view of Figure 12, and Figure 14 is a structural diagram of a feeding network provided in the fifth embodiment of the present application.

[0106] In a specific embodiment, the feed network 102 may include a main line 1 and multiple coupled lines 2. The number of coupled lines 2 may be two, three, four, or the like, and may be set based on actual needs and is not limited herein. In the specific embodiments shown in Figures 9 and 12, the feed network 102 includes a main line 1 and two coupled lines 2. The main line 1 includes an input port 11 and a main line output port 12. Each coupled line 2 includes an open end 21 and a coupled line output port 22. Each coupled line 2 is coupled to the main line 1 via its open end 21, thereby forming a simple 1-to-3 feed network 102.

[0107] For example, along the first direction Z of the main line 1, the multiple coupled lines 2 can be located on one side of the main line 1. For example, in the specific embodiment shown in FIG9 , the two coupled lines 2 can be located on the same side of the main line 1. Alternatively, for example, along the first direction Z of the main line 1, the multiple coupled lines 2 can be located on both sides of the main line 1. For example, in the specific embodiment shown in FIG12 , the two coupled lines 2 can be located on opposite sides of the main line 1. This further increases the design freedom of the feed network 102, meets the layout requirements of the feed network 102 in different antenna devices 100, and meets the phase slope adjustment requirements of each main line output port 12 and each coupled line output port 22, thereby improving the antenna gain.

[0108] Furthermore, when the plurality of coupling lines 2 are located on the same side of the main line 1 along the first direction Z, illustratively, at least two of the plurality of coupling lines 2 are located in the same plane perpendicular to the first direction Z of the main line. For example, in the specific embodiments shown in Figures 9 to 11 , the two coupling lines 2 are located in the same plane perpendicular to the first direction Z. Alternatively, illustratively, such as in the specific embodiment shown in Figure 14 , at least two of the plurality of coupling lines 2 are spaced apart along the first direction Z of the main line 1, that is, at least two coupling lines 2 are located in two different planes perpendicular to the first direction Z.

[0109] As shown in Figures 12 and 13, when multiple coupling lines 2 are respectively located on opposite sides of the main line 2 along the first direction Z, exemplarily, there are at least two coupling lines 2 on at least one side of the main line 1 and are located in the same plane perpendicular to the first direction Z of the main line, or, exemplarily, there are at least two coupling lines 2 on at least one side of the main line 1, and at least two coupling lines 2 among the multiple coupling lines 2 are spaced apart along the first direction Z of the main line 1, that is, there are at least two coupling lines 2 located in two different planes perpendicular to the first direction Z.

[0110] By adjusting the positions of the multiple coupled lines 2 relative to the main line 1, the phase slopes of each main line output port 12 and each coupled line output port 22 can be adjusted, thereby reducing the phase slope difference between each main line output port 12 and each coupled line output port 22, reducing the number of phase jump cycles, improving antenna gain, and further increasing the design freedom of the feed network 102, thereby meeting the layout requirements of the feed network 102 in different antenna devices 100.

[0111] As shown in FIG11 , when there are at least two coupling lines 2 located in the same plane in the first direction Z perpendicular to the main line, multiple coupling lines 2 located in the same plane are spaced apart along the second direction Y and / or the third direction X of the main line, thereby reducing the mutual coupling between the lines and improving the antenna gain.

[0112] Further, please refer to FIG15 , which is a schematic structural diagram of a feeding network provided in a sixth embodiment of the present application.

[0113] In a specific embodiment, the feeding network 102 may further include multiple main lines 1, which are connected in parallel and share one input port 11, thereby forming a simple 1toN (N≥2) feeding network 102. The number of main lines 1 may be two, three, four, etc., and when there are multiple main lines 1, the number of coupled lines 2 may be greater than or equal to the number of main lines 1. The specific setting can be made according to actual needs and is not limited here.

[0114] For example, in the specific embodiment shown in FIG15 , the feed network 2 includes two main lines 1, which are connected in parallel and share a common input port 11. The feed network 102 also includes two coupled lines 2, which are located in the same plane perpendicular to the first direction Z and spaced apart along the second direction Y. Each coupled line 2 at least partially overlaps with the projection of its corresponding main line 1 in the first direction Z. This simple structure can implement a simple 1-to-4 feed network 102, and it occupies a small layout space, facilitating layout in the antenna device 100.

[0115] Please refer to FIG. 16 , which is a schematic structural diagram of a feeding network provided in a seventh embodiment of the present application.

[0116] In each of the above embodiments, the main line 1 can be a straight line, a curve, or a broken line, or a combination of two or more thereof. Correspondingly, the coupling line 2 can be a straight line, a curve, or a broken line, or a combination of two or more thereof. Of course, the main line 1 and the coupling line 2 can also have other irregular shapes, which can be set according to specific needs and are not limited here.

[0117] In this embodiment, by adjusting the shapes of the main line 1 and the coupled line 2, the phase slopes of each main line output port 12 and each coupled line output port 22 can be adjusted, thereby reducing the phase slope difference between each main line output port 12 and each coupled line output port 22, reducing the number of phase jump cycles, improving the antenna gain, and further increasing the design freedom of the feed network 102, thereby meeting the layout requirements of the feed network 102 in different antenna devices 100.

[0118] In the specific embodiments shown in Figures 5 to 15 , the main line 1 and the coupled line 2 are both straight lines. This structure can reduce routing density and reduce inter-line coupling. In the specific embodiment shown in Figure 16 , the main line 1 and the coupled line 2 are both zigzag lines. This structure can avoid other coupled lines 2 or main line 1 components in the feed network 102, thereby further reducing routing density.

[0119] In the above embodiments, the spacing distance between the antenna 1 and the coupling line 2 along the first direction Z of the antenna 1, the spacing distance between the multiple coupling lines 2, the spacing distance between the multiple coupling lines 2 along the second direction Y and / or the third direction Z of the antenna 1, the thickness of each main line 1 and each coupling line 2 along the first direction Z, the width of each main line 1 and each coupling line 2 along the second direction Y, the length of each main line 1 and each coupling line 2 along the third direction Z, the shape of each main line 1 and each coupling line 2, etc. can all be set according to actual needs to meet the layout requirements of the feed network 102 in different antenna devices 100, as well as the phase slope adjustment requirements of each main line output port 12 and each coupling line output port 22, to improve the performance of the antenna, and are not limited here.

[0120] Please refer to Figures 17 and 18. Figure 17 is a structural diagram of a feeding network provided in the eighth embodiment of the present application, and Figure 18 is a side view of Figure 17.

[0121] As shown in Figures 17 and 18, in a specific embodiment, the feeding network 102 may further include a supporting medium 4. Along the first direction Z of the main line 1, the supporting medium 4 includes a first surface 41 and a second surface 42 relative to each other, wherein one of the first surface 41 and the second surface 42 is provided with the main line, and the other is provided with the coupling line 2.

[0122] In this embodiment, the supporting medium 4 can fix the main line 1 and the coupling line 2 and maintain the stability of their relative positions, which is conducive to the miniaturized design of the feeding network 102 and further reduces the occupied space of the feeding network 102. In addition, the setting of the supporting medium 4 can better constrain electromagnetic waves, which is conducive to the stable propagation of signals and the improvement of antenna gain.

[0123] The supporting medium 4 can be a circuit board or a plastic part. Specifically, the material of the supporting medium 4 can be ceramic, polycarbonate (PC), or modified polyester resin (PY). Of course, the dielectric layer can also be other materials that can be used for energy radiation, and there is no limitation here.

[0124] In this specification, reference can be made to the same or similar parts between the various embodiments. In particular, for the device embodiment and the terminal embodiment, since they are basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description in the method embodiment.

[0125] The above description is merely a specific implementation of the embodiments of the present application, but the scope of protection of the embodiments of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the embodiments of the present application shall be included in the scope of protection of the embodiments of the present application. Therefore, the scope of protection of the embodiments of the present application shall be based on the scope of protection of the claims.

Claims

1. A feeding network, characterized in that: include: floor; A main line, the main line is coupled to the floor, the main line includes an input port and at least one main line output port; A coupling line is coupled to the main line along a first direction of the main line, and the coupling line is spaced apart from the main line; the coupling line includes an open end and at least one coupling line output port.

2. The feeding network according to claim 1, characterized in that The feeding network includes a plurality of coupling lines, and along a first direction of the main line, the plurality of coupling lines are located on a same side of the main line.

3. The feeding network according to claim 1, characterized in that The feeding network includes a plurality of coupling lines, and along a first direction of the main line, the plurality of coupling lines are respectively located on both sides of the main line.

4. The feeding network according to claim 2 or 3, characterized in that: Along the first direction of the main line, at least two of the plurality of coupling lines are arranged at intervals.

5. The feeding network according to claim 2 or 3, characterized in that: At least two of the plurality of coupling lines are located in the same plane in a first direction perpendicular to the main line; Along the second direction and / or the third direction of the main line, a plurality of coupling lines located in the same plane are arranged at intervals; The first direction, the second direction and the third direction of the main line are perpendicular to each other.

6. The feeding network according to any one of claims 1 to 5, characterized in that: Along a first direction of the main line, a projection of the main line at least partially overlaps with a projection of the coupling line.

7. The feeding network according to any one of claims 1 to 6, characterized in that: The input port is provided with one.

8. The feeding network according to claim 7, characterized in that The feeding network includes a plurality of the main lines, and the plurality of the main lines are connected in parallel and share one input port.

9. The feeding network according to any one of claims 1 to 8, characterized in that: The main line is a straight line, a curve or a broken line, or a combination of two or more.

10. The feeding network according to any one of claims 1 to 9, characterized in that: The coupling line is a straight line, a curve or a broken line, or a combination of two or more thereof.

11. The feeding network according to any one of claims 1 to 10, characterized in that: Along a first direction of the main line, the floor is located on at least one side of the main line.

12. The feeding network according to any one of claims 1 to 11, characterized in that: Along a second direction of the main line, the floor is located on at least one side of the main line.

13. The feeding network according to any one of claims 1 to 12, characterized in that: The feed network further comprises a supporting medium, wherein along a first direction of the main line, the supporting medium comprises a first surface and a second surface opposite to each other; The main line is disposed on one of the first surface and the second surface, and the coupling line is disposed on the other surface.

14. An antenna device, characterized in that: The antenna device comprises a feeding network as claimed in any one of claims 1 to 13.

15. A base station system, characterized in that: The base station system comprises the antenna device according to claim 14.

Images