Feed network, antenna device and base station system

Abstract

The invention relates to a feed network, an antenna device and a base station system, the feed network comprises a floor, a main line and a coupling line, the main line is in coupling connection with the floor, 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 in coupling connection with the main line through an open end, and the coupling line and the main line are arranged at intervals; the coupling line includes an open end and at least one coupling line output port. The feed network is simple in structure, good in manufacturability and high in design freedom degree, the layout occupied space of the feed network can be reduced, and the layout of the feed network in the antenna device is facilitated. And the phase slope of the signal at the main line output ports and the coupling line output ports is easier to adjust, so that the phase slope difference of the signal at each main line output port and each coupling line output port is reduced, and the antenna gain can be effectively improved.

Description

Technical Field

[0001] 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

[0002] In recent years, mobile communication technology has made great progress. As an important part of mobile communication, base station antennas have also evolved with the development of communication technology, from single-frequency and dual-frequency to multi-frequency and to a larger number of multiple-input and multiple-output (Massive Multiple Input Multiple Output, Massive MIMO) base station antennas. At present, as antenna arrays become more and more complex, the layout space of the feed network becomes smaller and smaller, which will cause greater coupling between the feed networks, have a greater impact on the radiation performance, and have low efficiency, which will increase the energy consumption of the entire communication system. Summary of the invention

[0003] 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.

[0004] 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 from the main line, and the coupling line comprises an open end and at least one coupling line output port.

[0005] 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 the 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 arranged at intervals, which can facilitate the adjustment of the spacing distance between the main line and the coupling line, thereby reducing the routing 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.

[0006] In addition, since there is no DC connection between the main line and the coupling line, the phase slope of the signal at the main line output port and the coupling line output port can be adjusted to improve the antenna gain through line coupling such as the length, width, shape or spacing distance between the main line and the coupling line, thereby further reducing the structural complexity of the feeding network and improving the design freedom of the feeding network. And by adjusting the phase slope of the signal at the main line output port and the coupling line output port through line coupling between the main line and the coupling line, it is easier to reduce the phase slope difference between the signal at each main line output port and each coupling line output port, and reduce the number of phase jump cycles between the signal at each main line output port and each coupling line output port, thereby effectively improving the antenna gain.

[0007] In a possible design, exemplarily, the feeding network includes a plurality of the coupling lines, and along a first direction of the main line, the plurality of the coupling lines are located on the same side of the main line. Exemplarily, the feeding network includes a plurality of the coupling lines, and along a first direction of the main line, the plurality of the coupling lines are located on both sides of the main line.

[0008] By setting multiple coupling lines on one side or both sides of the feeding network, the design freedom of the feeding network is further improved, meeting the layout requirements of the feeding network in different antenna devices and the phase slope adjustment requirements of each main line output port and each coupling line output port, thereby improving the antenna gain.

[0009] 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.

[0010] By adjusting the positions of multiple coupling lines relative to the main line, the phase slopes of each main line output port and each coupling line output port can be adjusted, thereby reducing the phase slope difference between each main line output port and each coupling line output port, reducing the number of phase jump cycles, improving antenna gain, and further improving the design freedom of the feeding network to meet the layout requirements of the feeding network in different antenna devices.

[0011] In a 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, and along the second direction and / or third direction of the main line, the multiple coupling lines located in the same plane are arranged at intervals, and the first direction, the second direction, and the third direction of the main line are perpendicular to each other. By arranging the multiple coupling lines located in the same plane at intervals, the mutual coupling between the lines can be reduced and the antenna gain can be improved.

[0012] 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.

[0013] In one possible design, the input port is provided with one, so that the feeding network can realize the function of converting an 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.

[0014] In a possible design, the feeding network includes a plurality of the main lines, and the plurality of the main lines are connected in parallel to share one input port, thereby forming a simple 1toN (N≥2) feeding network.

[0015] In a possible design, the main line is a straight line, a curve or a broken line, or a combination of two or more.

[0016] 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 feeding network to meet the layout requirements of the feeding network in different antenna devices.

[0017] In a possible design, the coupling 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 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 feeding network to meet the layout requirements of the feeding network in different antenna devices.

[0019] In a possible design, illustratively, along the first direction of the main line, the floor is located on one side of the main line. illustratively, along the second direction of the main line, the floor is located on at least one side of the main line. This structure can improve the design freedom of the feed network and further facilitate the layout of the feed network in the antenna device.

[0020] In one possible design, the feeding network further includes a supporting medium, and along a 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.

[0021] 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 miniaturized design of the feeding network and further reduces the occupied space of 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.

[0022] The second aspect of the 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.

[0023] The third aspect of the embodiment 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 repeated here.

[0024] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. 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 paying creative labor.

[0026] Figure 1 A schematic diagram of the structure of a base station system provided in the present application in some embodiments;

[0027] Figure 2 for Figure 1 A schematic diagram of the structure of an antenna device in some embodiments;

[0028] Figure 3 An exemplary diagram of the connection between a feed network and an antenna unit in an antenna device in one embodiment;

[0029] Figure 4 A schematic diagram of the structure of a feeding network provided in the first embodiment of the present application;

[0030] Figure 5 for Figure 4 Side view of

[0031] Figure 6 for Figure 4 A top view of

[0032] Figure 7 A schematic diagram of the structure of a floor provided for this application;

[0033] Figure 8 A schematic diagram of the structure of a feeding network provided for the second embodiment of the present application;

[0034] Fig. 9 A schematic diagram of the structure of a feeding network provided for the third embodiment of the present application;

[0035] Fig.10 for Fig. 9 Side view of

[0036] Fig.11 for Fig. 9 A front view of

[0037] Fig.12 A schematic diagram of the structure of a feeding network provided in the fourth embodiment of the present application;

[0038] Fig.13 for Fig.12 Side view of

[0039] Fig.14 A schematic diagram of the structure of a feeding network provided in a fifth embodiment of the present application;

[0040] Fig.15 A schematic diagram of the structure of a feeding network provided in a sixth embodiment of the present application;

[0041] Fig.16 A schematic diagram of the structure of a feeding network provided in the seventh embodiment of the present application;

[0042] Fig.17 A schematic diagram of the structure of a feeding network provided in an eighth embodiment of the present application;

[0043] Fig.18 for Fig.17 Side view of.

[0044] Reference numerals:

[0045] 100-antenna device;

[0046] 101-antenna array;

[0047] 102-feeding network;

[0048] 103-Phase shifter;

[0049] 104- transmission network;

[0050] 105- combiner;

[0051] 106-antenna connector;

[0052] 107-radome;

[0053] 108-antenna unit;

[0054] 200-antenna adjustment bracket;

[0055] 300-fixed rod;

[0056] 400-Joint seal;

[0057] 500- grounding device;

[0058] 1- Main line;

[0059] 11- Input port;

[0060] 12-Main line output port

[0061] 2- coupling line;

[0062] 21-open end;

[0063] 22-coupled line output port;

[0064] 3- Floor;

[0065] 31-gap;

[0066] 4- Support medium;

[0067] 41- first surface;

[0068] 42- second surface;

[0069] X-third direction;

[0070] Y-second direction;

[0071] Z - first direction.

[0072] 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

[0073] 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.

[0074] In the description of this application, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot 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 be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0075] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" 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 other meanings.

[0076] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0077] The following explains the terms that may appear in the embodiments of the present application.

[0078] Coupling: can be understood as direct coupling and / or indirect coupling, and "coupled connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection", which is understood as the physical contact and electrical conduction between components; it can also be understood as the connection between different components in the circuit structure 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 called capacitive coupling, for example, signal transmission is achieved by coupling between the gaps between two conductive parts to form an equivalent capacitor.

[0079] Relative / relative setting: The relative setting of A and B may refer to A and B being set face to face (opposite to, or face toface).

[0080] Ground / floor: can refer to at least a part of any grounding layer, grounding plate, or grounding metal layer, etc. in an electronic device (such as a mobile phone), or at least a part of any combination of any of the above grounding layers, grounding plates, or grounding components, etc., and "ground / floor" can be used for grounding components in electronic devices. 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 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 with 8, 10, 12, 13 or 14 layers of conductive materials, or an element separated and electrically insulated by a dielectric layer or insulating layer such as glass fiber, polymer, etc. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer and a wiring layer, and the wiring layer and the grounding layer are electrically connected through vias. In one embodiment, components such as a display, a touch screen, input buttons, a transmitter, a processor, a memory, a battery, a charging circuit, a system on chip (SoC) structure, etc. can be mounted on or connected to a circuit board; or electrically connected to a wiring layer and / or a ground layer in the circuit board. For example, a radio frequency source is disposed on the wiring layer.

[0081] 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.

[0082] 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 technological level, rather than absolutely strict definitions in a mathematical sense. There may be a deviation of less than a predetermined threshold value (for example, 1mm, 0.5m, or 0.1mm) 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, 1mm, 0.5m, or 0.1mm) 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.

[0083] 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.

[0084] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of the base station system provided in this application in some embodiments. Figure 1 As shown, 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 and can exchange information with communication terminals in the area.

[0085] Please refer to Figure 2 and Figure 3 As shown, Figure 2 for Figure 1 The schematic diagram of the structure of the antenna device 100 in some embodiments is shown in FIG. Figure 3 FIG. 1 is a diagram showing an example of a connection between a feed network 102 and an antenna unit 108 in an antenna device 100 in an embodiment. Figure 2 As shown, the antenna device 100 is composed of 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 a plurality of antenna units 108, which receive or transmit radio frequency signals through a feed network 102 composed of the phase shifter 103, the transmission network 104 and the combiner 105. Figure 3 As shown, the feed network 102 can feed the radio frequency signal to the antenna unit 105 in the antenna array 101 according to a certain amplitude and phase. Alternatively, the feed network 102 can also send the wireless signal received by the antenna array 101 to the signal processing unit of the base station system through the antenna connector 106 according to a certain amplitude and phase. The antenna cover 107 is a structural member that can protect the internal components from the influence of the external environment. It has good electromagnetic wave penetration characteristics in electrical performance and can withstand the influence of harsh external environment in mechanical performance.

[0086] Please refer to Figures 4 to 6 , Figure 4 A schematic diagram of the structure of a feeding network provided in the first embodiment of the present application, Figure 5 for Figure 4 Side view of Figure 6 for Figure 4 Top view of the .

[0087] like Figure 4 As shown, 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.

[0088] The floor 3 can be made of a conductive material. In one embodiment, the conductive material can be any of the following materials: copper, aluminum, stainless steel, brass and their alloys, 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 is not limited here.

[0089] 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 approximately perpendicular to each other.

[0090] like Figure 4 As shown, along the first direction Z of the main line 1, the main line 1 includes a relative upper side and a lower side, along the second direction Y of the main line 1, the main line 1 includes a relative left side and a right side, and along the third direction X of the main line 1, the main line 1 includes a relative front side and a rear side. According to actual needs, the floor 3 can be flexibly arranged on the upper side, the lower side, the left side, the right side, the front side, and the rear side of the main line 1 to enhance the design freedom of the feeding network 102, and further facilitate the layout of the feeding network 102 in the antenna device 100.

[0091] Exemplarily, along the 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 Figure 4As shown, the floor 3 may be located at the lower side of the main line 1, and / or the floor 3 may also be located at the upper side of the main line 1. Exemplarily, along the second direction Y of the main line 1, the floor 3 is also located 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. Exemplarily, the floor 3 may also be located at least one side of the main line 1 along the first direction Z and at least one side along the second direction Y, for example, the floor 3 may be located at the upper and / or lower side of the main line 1, and at the left and / or right side of the main line 1. Exemplarily, along the third direction X of the main line 1, the floor 3 is located at least one side of the main line 1, for example, the floor 3 may be located at the front and / or rear side of the main line 1. Exemplarily, the floor 3 may also be located 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 located at the upper and / or lower side of the main line 1, and at the front and / or rear side of the main line 1. Exemplarily, the floor 3 can also be located at least one side of the main line 1 along the second direction Y and at least one side along the third direction X at the same time. For example, the floor 3 is located at the left side and / or right side of the main line 1 at the same time, and is located at the front side and / or the rear side of the main line 1 at the same time. Exemplarily, the floor 3 can also be located at least one side of the main line 1 along the first direction Z, at least one side of the second direction Y, and at least one side of the third direction X at the same time. For example, please refer to Figure 7 , Figure 7 A schematic diagram of the structure of a floor provided in this application, such as Figure 7 As shown, the floor 3 can be a structure with a cavity, the main line 1 and the coupling line 2 are located in the cavity of the floor 3, and 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, so as to reduce the radiation loss of the signal. At the same time, holes or gaps 31 can be provided on the side walls of the floor 3 along the third direction X of the main line 1 to facilitate signal transmission.

[0092] 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 made here.

[0093] like Figure 4 As shown, the main line 1 includes an input port 11 and at least one main line output port 12, and the coupled line 2 includes an open end 21 and at least one coupled line output port 22. In the process of signal transmission, the signal can be input to the main line 1 through the input port 11 of the main line 1, and transmitted to the main line output port 12 through the main line 1 for output. At the same time, at least a part of the signal transmitted on the main line 1 can be coupled to the coupled line 2 through the open end 21 on the coupled line 2, and transmitted to the coupled line output port 22 through the coupled line and output.

[0094] Also refer to Figure 5 and Figure 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 .

[0095] In this embodiment, Figures 4 to 6 As shown, the structure of the feed network 102 is simple and has good manufacturability. The main line 1 and the coupling line 2 are located in different planes perpendicular to the first direction Z, so that the space occupied by the main line 1 and the coupling line 2 on the plane perpendicular to the first direction Z can be reduced, thereby reducing the layout space occupied by the feed network 102, which is beneficial to the layout of the feed network 102 in the antenna device 100. In addition, along the first direction Z of the main line 1, the coupling line 2 is arranged at an interval with the main line 1, which can facilitate the adjustment of the interval distance between the main line 1 and the coupling line 2, thereby reducing the routing density, reducing the mutual coupling between other feed networks 102 or antenna units 108 and the main line 1 or the coupling line 2, and thus improving the antenna gain.

[0096] In addition, if the phase slope difference of the signal between 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 line coupling such as the length, width, shape of the main line 1 and the coupled line 2 or the spacing distance 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. And by adjusting the phase slope of the signal at the main line output port 12 and the coupled line output port 22 through line coupling between the main line 1 and the coupled line 2, it can be easier to reduce the phase slope difference of the signal between each main line output port 12 and each coupled line output port 22, and reduce the number of phase jump cycles of the signal between each main line output port 12 and each coupled line output port 22, thereby effectively improving the antenna gain.

[0097] Furthermore, if Figure 5 and Figure 6 As shown, 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 occupied space of the feed network 102. 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 improving the design freedom of the feed network 102, thereby making it easier to flexibly layout the feed network 102 in the antenna device 100.

[0098] Furthermore, if Figure 4As shown, the main line 1 has only one input port 11, so that the feeding network 102 can convert one input signal into multiple signal outputs, thereby improving the signal transmission efficiency, and the structure of the feeding network 102 is simpler, which is more conducive to the layout of the feeding network 102 in the antenna device 100.

[0099] 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.

[0100] In a specific embodiment, the feeding network 102 may include a main line 1 and a coupling line 2 . Along a first direction Z of the main line 1 , the coupling line 1 is located on one side of the main line 1 .

[0101] like Figure 4 In the specific embodiment shown, the feeding network 102 includes a main line 1 and a coupling line 2, the main line 1 is provided with an input port 11, a main line output port 12, the coupling line 2 is provided with an open end 21 and a coupling line output end 22, and the coupling line 2 is coupled and connected to the main line 1 through the open end 21, thereby forming a simple 1to2 feeding network 102. Of course, according to actual needs, two, three or more main line output ports 12 and / or coupling line output ports 22 can be set on the main line 1 and / or the coupling line 2, so as to realize a simpler 1toN (N≥2) feeding network 102, which is not limited here.

[0102] Exemplarily, along the first direction Z of the main line 1, such as Figure 4 As shown, 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 away from the floor 3. Or, for example, please refer to Figure 8 , Figure 8 A schematic diagram of the structure of the feeding network provided in the second embodiment of the present application is shown in FIG. Figure 8 As shown, the coupling line 2 may also be located at 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 may be arranged according to actual needs to further improve the design freedom of the feeding network 102.

[0103] Please refer to Figures 9 to 14 , Fig. 9 A schematic diagram of the structure of a feeding network provided in the third embodiment of the present application, Fig.10 for Fig. 9 Side view of Fig.11 for Fig. 9 The front view of Fig.12A schematic diagram of the structure of a feeding network provided in the fourth embodiment of the present application, Fig.13 for Fig.12 Side view of Fig.14 A schematic diagram of the structure of a feeding network provided for the fifth embodiment of the present application.

[0104] In a specific embodiment, the feed network 102 may include a main line 1 and a plurality of coupling lines 2. The number of coupling lines 2 may be two, three, four, etc., which may be set according to actual needs and is not limited here. Fig. 9 and Fig.12 In the specific embodiment shown, the feeding 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, and each coupled line 2 is coupled to the main line 1 through its open end 21, thereby forming a simple 1to3 feeding network 102.

[0105] Wherein, illustratively, along the first direction Z of the main line 1, a plurality of coupling lines 2 may be located on one side of the main line 1, for example Fig. 9 In the specific embodiment shown, the two coupling lines 2 may 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 plurality of coupling lines 2 may also be located on both sides of the main line 1, for example Fig.12 In the specific embodiment shown, the two coupling lines 2 can also be located on opposite sides of the main line 1, thereby further improving the design freedom of the feeding network 102, meeting the layout requirements of the feeding network 102 in different antenna devices 100, and the phase slope adjustment requirements of each main line output port 12 and each coupling line output port 22, thereby improving the antenna gain.

[0106] Further, 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 coupling lines 2 among the plurality of coupling lines 2 are located in the same plane in the first direction Z perpendicular to the main line, for example Figures 9 to 11 In the specific embodiment shown, the two coupling lines 2 are located in the same plane perpendicular to the first direction Z. Alternatively, for example, Fig.14 In the specific embodiment shown, along the first direction Z of the main line 1 , at least two coupling lines 2 among the plurality of coupling lines 2 are arranged at intervals, that is, there are at least two coupling lines 2 located in two different planes perpendicular to the first direction Z.

[0107] like Fig.12 and Fig.13As shown, 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 located in the same plane on the first direction Z perpendicular to 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.

[0108] By adjusting the positions of the plurality of coupling lines 2 relative to the main line 1, the phase slopes of the main line output ports 12 and the coupling line output ports 22 can be adjusted, thereby reducing the phase slope differences between the main line output ports 12 and the coupling line output ports 22, reducing the number of phase jump cycles, improving the antenna gain, and further improving the design freedom of the feed network 102, thereby meeting the layout requirements of the feed network 102 in different antenna devices 100.

[0109] Among them, Fig.11 As shown, 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 arranged at intervals 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.

[0110] For further information, please refer to Fig.15 , Fig.15 A schematic diagram of the structure of a feeding network provided for the sixth embodiment of the present application.

[0111] In a specific embodiment, the feeding network 102 may further include a plurality of 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 coupling lines 2 may be greater than or equal to the number of main lines 1, which may be set according to actual needs and is not limited here.

[0112] For example Fig.15 In the specific embodiment shown, the feed network 2 includes two main lines 1, which are connected in parallel and share an input port 11. The feed network 102 also includes two coupling lines 2, which are located in the same plane perpendicular to the first direction Z and are spaced apart along the second direction Y. Each coupling line 2 at least partially overlaps with the projection of its corresponding main line 1 in the first direction Z. The structure is simple, and a simple 1to4 feed network 102 can be realized, and the layout space occupied is small, which is convenient for layout in the antenna device 100.

[0113] Please refer to Fig.16 , Fig.16A schematic diagram of the structure of a feeding network provided for the seventh embodiment of the present application.

[0114] In the above embodiments, the main line 1 can be one or a combination of two or more of a straight line, a curve or a broken line, and correspondingly, the coupling line 2 can be one or a combination of two or more of a straight line, a curve or a broken line. Of course, the main line 1 and the coupling line 2 can also be other irregular shapes, which can be set according to needs and are not limited here.

[0115] In this embodiment, by adjusting the shapes of the main line 1 and the coupling line 2, the phase slopes of each main line output port 12 and each coupling line output port 22 can be adjusted, thereby reducing the phase slope difference between each main line output port 12 and each coupling line output port 22, reducing the number of phase jump cycles, improving the antenna gain, and further improving the design freedom of the feeding network 102, meeting the layout requirements of the feeding network 102 in different antenna devices 100.

[0116] Among them, Figures 5 to 15 In the specific embodiment shown, the main line 1 and the coupling line 2 are both straight lines. This structure can reduce the wiring density and reduce the coupling between lines. Fig.16 In the specific embodiment shown, the main line 1 and the coupling line 2 are both broken lines. This structure can avoid other coupling lines 2 or main line 1 and other components in the feeding network 102, thereby further reducing the routing density.

[0117] 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 feeding 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, so as to improve the performance of the antenna, and no limitation is made here.

[0118] Please refer to Fig.17 and Fig.18 , Fig.17 A schematic diagram of the structure of a feeding network provided in the eighth embodiment of the present application, Fig.18 for Fig.17 Side view of.

[0119] like Fig.17 and Fig.18As shown, 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 opposite first surface 41 and second surface 42. Among them, 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.

[0120] In this embodiment, the supporting medium 4 can fix the main line 1 and the coupling line 2, maintaining the stability of their relative positions, which is beneficial to the miniaturization design of the feeding network 102, further reducing the occupied space of the feeding network 102. Moreover, the setting of the supporting medium 4 can better constrain electromagnetic waves, which is beneficial to the stable propagation of signals and the improvement of antenna gain.

[0121] Among them, 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, which are not limited herein.

[0122] The same or similar parts among the various embodiments in this specification can be referred to each other. In particular, for the device embodiments and the terminal embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the description in the method embodiments.

[0123] The above is only the specific implementation manner of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any change or replacement within the technical scope disclosed in the embodiments of the present application should be covered within the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be subject to the protection scope of the claimed rights.

Claims

1. A feeding network, It is 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, It is 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, It is 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. A feeding network according to claim 2 or 3, It is 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, It is 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, It is 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. A feeding network according to any one of claims 1 to 6, It is characterized in that The input port is provided with one.

8. The feeding network according to claim 7, It is 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, It is 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, It is 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, It is 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, It is 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. A feeding network according to any one of claims 1 to 12, It is 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, It is 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, It is characterized in that The base station system comprises the antenna device according to claim 14.

Images