Feed structure, feed network, antenna and base station

Abstract

The invention provides a feed structure, a feed network, an antenna and a base station. Wherein the first power dividing feeder line is provided with a first port and at least two second ports; each balun comprises a feed body and a feed pin, the feed body is connected with the second port, and the feed pin is arranged at the end, away from the second port, of the feed body; a first power division isolation space is formed on the power division isolation piece, and the first power division feeder line is fixed on the first power division isolation piece and located in the first power division isolation space; a balun isolation space is formed on the balun isolation piece, and the feed body is fixed on the balun isolation piece and located in the balun isolation space. According to the invention, the isolation effect between the first power dividing feed line and the balun in the feed structure and components in the external environment can be improved, so that the radiation loss is reduced.

Description

Technical Field

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

[0002] In a communication base station, a feeding network is usually provided, and the feeding network includes a phase shifter, a power divider, a balun, etc. The balun can be connected to the antenna unit to realize signal transmission between the antenna unit and the antenna unit.

[0003] In the related art, the power divider and balun are both microstrip lines, which have strong radiation fields. Therefore, when transmitting signals, the power divider and balun are easily coupled with the components around the feed network in the base station, resulting in large radiation losses, thus affecting the radiation performance of the antenna unit. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a feeding structure, a feeding network, an antenna and a base station, which can increase the isolation effect between the first power division feeder and the balun in the feeding structure and the components in the external environment, thereby reducing radiation loss.

[0005] The present application provides a feeding structure, which can be applied to a feeding network, which can be applied to an antenna, which includes not only the feeding network but also an antenna unit electrically connected to the feeding network. The antenna can be applied to a base station, which includes not only the antenna but also a receiver and a transmitter.

[0006] The feeding structure includes: a first power division feeder, at least two baluns, a power division isolator and a balun isolator. The first power division feeder has a first port and at least two second ports. Each balun includes a feeder and a feeding pin, and the feeders of at least two baluns are respectively connected to the at least two second ports, and the feeding pins are arranged at one end of the feeder away from the second port. A first power division isolation space is formed on the power division isolator, and the first power division feeder is fixed on the first power division isolator and is located in the first power division isolation space. A balun isolation space is formed on the balun isolator, and the feeder is fixed on the balun isolator and is located in the balun isolation space.

[0007] When the feeding structure of the present application is applied, the feeding pin can be electrically connected to the antenna unit. The first port of the first power division feeder can be electrically connected to the receiver and the transmitter respectively. In the process of the antenna unit radiating the signal, the transmitter can send a signal to the first port of the first power division feeder, and the first power division feeder can divide the signal into multiple sub-signals, and transmit each sub-signal to the balun through the second port. Then it is transmitted to the antenna unit through the feeding pin of the balun, and radiated through the antenna unit. After the antenna unit receives the signal, the antenna unit can transmit the signal to the balun through the feeding pin, and transmit it to the second port of the first power division feeder through the balun, and transmit it to the first port through the first power division feeder, and transmit it from the first port to the receiver.

[0008] Since the power division isolator has a first power division isolation space, and the first power division feeder is located in the first power division isolation space, the power division isolator can provide isolation for the first power division feeder, thereby reducing the coupling between the first power division feeder and components in the external environment, thereby reducing radiation loss. Similarly, a balun isolation space is formed on the balun isolator, and the feeder is located in the balun isolation space, so that the balun isolator can provide isolation for the balun, thereby reducing the coupling between the balun and components in the external environment, thereby reducing radiation loss.

[0009] In some embodiments, the feeding structure also includes a second power division feeder, and the second power division feeder includes a first port and at least two second ports. The feeder of a part of the at least two baluns is connected to the second port of the first power division feeder, and the feeder of another part of the balun is connected to the second port of the second power division feeder. A second power division isolation space is also formed on the power division isolation element, and the second power division feeder is fixed on the power division isolation element and is located in the second power division isolation space. When the antenna unit is a dual-polarization antenna unit, the feeding network needs to transmit signals of different polarization directions to the antenna unit. Since in this embodiment, the feeding structure also includes a second power division feeder, the first power division feeder and the second power division feeder can respectively receive signals of different polarization directions sent by the transmitter, and thus, the feeding structure of the present application can be applied to base stations using dual-polarization antenna units.

[0010] Based on this, the power division isolator includes a first power division isolator and a second power division isolator, a first power division isolation space is formed on the first power division isolator, a second power division isolation space is formed on the second power division isolator, and the first power division isolator and the second power division isolator are arranged side by side. The first power division feeder and the first power division isolator can form a first power divider, and the second power division feeder and the second power division isolator can form a second power divider. The first power division isolator and the second power division isolator can isolate the first power division feeder and the second power division feeder, respectively, so as to reduce the radiation loss between the sub-signal transmitted on the first power division feeder and the sub-signal transmitted on the second power division feeder.

[0011] In some embodiments, the first power division isolator and the second power division isolator both include a first power division isolating portion and a second power division isolating portion provided on the first power division isolating portion and extending in a direction that has an angle with the first power division isolating portion. The first power division feeder and the second power division feeder both include a signal transmission body and extension bodies extending from both sides of the signal transmission body, respectively. The signal transmission bodies of the first power division feeder and the second power division feeder are respectively fixed on the first power division isolating portion of the first power division isolator and the second power division isolator, and the extension bodies of the first power division feeder and the second power division feeder are respectively fixed on the second power division isolating portion of the first power division isolator and the second power division isolator. In this way, the first power division isolating portion can isolate the signal transmission body, and the second power division isolating portion can isolate the extension body.

[0012] In some embodiments, the first power division isolation part includes a first substrate and first side panels fixed on both sides of the first substrate, and the signal transmission body is located between the first substrate and the first side panels on both sides. In this way, the first substrate and the two first side panels can isolate the signal transmission body, that is, the first power division isolation part can provide isolation in three directions for the signal transmission body. When the feeding structure is applied, the feeding structure can be fixed on the circuit board through a phase-shifting power division network, so that the circuit board, the first substrate of the first power division isolation part and the two first side panels can provide isolation in four directions for the signal transmission body, thereby further reducing radiation loss. Moreover, the structural form between the signal transmission body and the first power division isolation part is a quasi-coaxial structure.

[0013] The second power division isolation part includes a second substrate and second side plates fixed on both sides of the second substrate, and the extension body is located between the second substrate and the second side plates of the second power division isolation part. In this way, the first substrate and the two first side plates can both isolate the extension body, that is, the second power division isolation part can provide isolation in three directions for the extension body. When the feeding structure is applied, the feeding structure can be fixed on the circuit board through a phase-shifting power division network, so that the circuit board, the first substrate of the second power division isolation part and the two first side plates can provide isolation in four directions for the extension body, thereby further reducing radiation loss. Moreover, the structural form between the extension body and the second power division isolation part is a quasi-coaxial structure.

[0014] Regarding the connection relationship between the first power division isolator and the second power division isolator, in a possible implementation, two second side plates on the first power division isolator and the second power division isolator that are close to each other are in contact and connected. In this case, the first power division isolator and the second power division isolator can be made separately, and then the first power division isolator and the second power division isolator are fixedly connected by bonding or welding. In this way, one of the second side plates on the first power division isolator and one of the second side plates on the second power division isolator are both located between the first power division feeder and the second power division feeder, and both of the second side plates can isolate the first power division feeder and the second power division feeder, thereby further reducing radiation loss.

[0015] In another possible implementation, the power division isolator also includes a connecting plate, and there is a distance between two second side plates on the first power division isolator and the second power division isolator that are close to each other and are connected by the connecting plate. In this way, one of the second side plates on the first power division isolator and one of the second side plates on the second power division isolator are both located between the first power division feeder and the second power division feeder, and both of the second side plates can isolate the first power division feeder and the second power division feeder, thereby further reducing the radiation loss between the signals.

[0016] Based on this, the power division isolator is an integrated structure, so that the strength of the power division isolator can be improved.

[0017] The first power division isolator can be an integrally formed structure, and the second power division isolator can also be an integrally formed structure. In this way, in order to facilitate bending the second power division isolator to form two first side panels, the length of the first side panel can be less than the length of the first substrate, and the end of the first side panel away from the second power division isolation part is flush with the first substrate. In other words, there is a gap between the first side panel and the first power division isolator, then the second power division isolator cannot provide isolation for the signal transmission body at the gap. Based on this, the end of the signal transmission body close to the extension body is closer to the first substrate than the end away from the extension body, that is, the signal transmission body is closer to the first substrate. The end of the signal transmission body away from the extension body needs to be connected to the circuit board through a phase-shifting power division network. When the signal transmission body is closer to the first substrate, it can ensure that the end of the signal transmission body away from the extension body is connected to the circuit board through the phase-shifting power division network, and it can also enable the first substrate to provide a better isolation effect for the part of the signal transmission body closer to it.

[0018] Further, the signal transmission body includes a first connection part, a second connection part and a signal input-output part connected in sequence, the first connection part is connected to the extension body, and the distance between the second connection part and the first substrate is less than the distance between the first connection part and the first substrate, and greater than the distance between the signal input-output part and the first substrate. The first connection part corresponds to the gap, and the first connection part is closest to the first substrate, thereby improving the isolation effect of the first substrate on the first connection part. The signal input-output part is farthest from the first substrate, that is, the signal input-output part is closest to the bottom of the feeding structure, thereby facilitating connection to the circuit board through the phase-shifting power division network. The second connection part also plays the role of connecting the first connection part and the signal input-output part. When the distance between the second connection part and the first substrate is greater than the distance between the first connection part and the first substrate, and less than the distance between the signal input-output part and the first substrate, the second connection part can be located in the middle of the first side plate, thereby making the second power division isolation part have a better isolation effect on the signal transmission body.

[0019] In some embodiments, a plurality of receiving grooves are provided on the second side plates of the first power division isolator and the second power division isolator, and a bottom pin is formed between two adjacent receiving grooves of the same second side plate, and the receiving groove is provided on the side of the second side plate away from the second substrate. When the feeding structure is applied, it is necessary to weld the second side plate of the first power division isolation part to the phase-shifting power division network. The bottom pin can be welded to the phase-shifting power division network, for example, by applying solder paste to the bottom pin and the receiving groove, and curing the solder paste by reflow soldering. The receiving groove can accommodate more solder paste, thereby improving the welding stability between the first power division isolation part and the phase-shifting power division network.

[0020] In some embodiments, a connecting groove is provided on the side of the second side plate facing away from the second substrate, and a protrusion is provided on the groove wall of the connecting groove, and the protrusion and the groove wall form a clamping space. The feeding structure also includes a first fixing member, the first fixing member includes a fixing body and a clamping portion fixed to the fixing body, the first power division feeder and / or the second power division feeder are fixed to the first power division isolator and the second power division isolator through the first fixing member, and the clamping portion is clamped into the connecting groove and is located in the clamping space. In this way, the assembly between the signal transmission body, the first fixing member and the first power division isolator and the second power division isolator is more convenient, and the connection is more reliable.

[0021] In some embodiments, the clamping portion is a boss or an elastic arm. Thus, the structure of the clamping portion is simple and easy to implement.

[0022] In some embodiments, two opposite sides of the extension body are provided with corresponding grooves, so that the grooves on the extension body can achieve impedance matching. Or, two opposite sides of the feed body are provided with corresponding grooves, so that the grooves on the feed body can achieve impedance matching.

[0023] In some embodiments, both the first power division feeder and the second power division feeder are provided with a limiting protrusion and a limiting groove; a clamping groove is formed on the fixed body, and the first fixing member further includes a barb fixed on the groove wall of the clamping groove, the limiting protrusion is located in the clamping groove, and the barb is clamped on the limiting protrusion and partially located in the limiting groove. In this way, the limiting groove and the limiting protrusion can play a limiting role for the first fixing member, so that the first power division feeder and the second power division feeder can be fixed on the power division isolation member through the first fixing member.

[0024] In some embodiments, the feeding structure further includes a second fixing member, the second fixing member includes a fixing plate and a guide body fixed to the fixing plate, a plurality of through holes are provided on the fixing plate, the fixing plate is fixed to the balun, and portions of the feeding pins are inserted into the through holes and extend out of the fixing plate. Moreover, the bottom surface of the antenna unit may generally be provided with a guide hole, and in the process of installing the antenna unit on the feeding structure, the installation position of the antenna on the feeding structure may be positioned by the guide body and the guide hole, thereby achieving rapid positioning. In addition, if there is no guide body, the installation position of the antenna unit needs to be positioned by the feeding pin, which will cause damage to the feeding pin. Therefore, the provision of the guide body can also protect the feeding pin.

[0025] In some embodiments, the first power division feeder and the second power division feeder both include a signal transmission body and extension bodies extending from both sides of the signal transmission body. The feeding structure also includes a first phase shifter, which is fixed between the first power division feeder and the power division isolator, and the first phase shifter is also fixed between the second power division feeder and the power division isolator. The first phase shifter is used to perform phase shift processing on the signals transmitted on the first power division feeder and the second power division feeder, respectively. In this way, the first phase shifter can not only play the role of fixing the second power division feeder and the power division isolator in connection, but also has a phase shifting effect. Moreover, the first phase shifter is located on one side of the signal transmission body, that is, the first phase shifter only performs phase shift processing on the signal transmitted by the extension body located on one side of the signal transmission body, thereby achieving a prefabricated phase of the signal transmitted from the extension body on one side relative to the signal transmitted from the extension body on the other side, thereby achieving a prefabricated downtilt angle of the antenna radiation beam.

[0026] In some embodiments, the feeding structure further includes a second phase shifter, the second phase shifter and the first phase shifter are located on the same side of the signal transmission body, the balun is fixed to the balun isolator through the second phase shifter, and the second phase shifter is used to perform phase shift processing on the signal transmitted on the balun. The phase shift amount of the phase shifter is related to the length of the phase shifter along the signal transmission direction, and since the first fixing member is also fixed between the extension body and the power divider isolator, the length of the extension body along the signal transmission direction is limited, the length of the first phase shifter is limited, and the phase shift amount of the first phase shifter cannot meet the phase shift amount requirement. The second phase shifter can perform phase shift processing on the signal transmitted from the extension body to the balun and transmitted on the balun. Since the first phase shifter and the second phase shifter are located on the same side of the signal transmission body, the signal transmitted on the balun can be phase shifted by the first phase shifter and the second phase shifter respectively. The phase shift amount of the feeding structure is the sum of the phase shift amount of the first phase shifter and the phase shift amount of the second phase shifter, thereby increasing the phase shift amount of the feeding structure, thereby meeting the phase shift amount requirement.

[0027] The number of balun isolators is multiple. The balun isolators include an isolation body. With respect to the structure of the isolation body, in some possible embodiments, the isolation body includes a third substrate and third side plates located on both sides of the third substrate, and the third side plates of every two isolation bodies are arranged opposite to each other and form a balun isolation space. In this way, the structure of the isolation body is simple and has high strength. In this case, the number of balun isolators is the same as the number of baluns.

[0028] In some other possible implementations, the cross section of the isolation body is an annular cross section with an opening, and each isolation body can form a balun isolation space. Thus, the balun isolation piece can adopt an integrally formed structure, thereby improving the strength of the balun isolation piece.

[0029] In some embodiments, the balun isolator also includes an isolation pin located at one end of the isolation body, and the feed pin is arranged opposite to the isolation pin. Moreover, a portion of the isolation pin can also be inserted into the through hole of the second fixing member and extend out of the fixing plate. In this way, the second fixing member can provide an auxiliary connection for the balun and the balun isolator. Moreover, the fixing structure of the balun isolator and the second fixing member is simpler and easier to install.

[0030] In some embodiments, the first power division feeder and the at least two baluns form an integrated structure. In this way, the first power division feeder and the at least two baluns can be manufactured together, thereby simplifying the manufacturing process of the feeding structure.

[0031] In some embodiments, the power divider isolator and the at least two balun isolators form an integrated structure. In this way, the power divider isolator and the at least two balun isolators can be manufactured together, thereby simplifying the manufacturing process of the feeding structure.

[0032] In a second aspect of the present application, a feeding network is provided, comprising a circuit board, a phase-shifting power division network and a feeding structure of any of the above embodiments, wherein the phase-shifting power division network is electrically connected to the circuit board, and the feeding structure is electrically connected to the phase-shifting power division network. The feeding network can achieve all the effects of the feeding structure.

[0033] In a third aspect of the present application, an antenna is provided, comprising a plurality of antenna units and the above-mentioned feeding network, wherein the antenna units are electrically connected to the feeding network. The antenna can achieve all the effects of the feeding network.

[0034] In a fourth aspect of the present application, a base station is provided, comprising a receiver, a transmitter and the above antenna, wherein the receiver and the transmitter are both electrically connected to the antenna. The base station can achieve all the effects of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application 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 any creative labor.

[0036] Figure 1 This is a schematic diagram of the structure of a base station in an embodiment of the present application;

[0037] Figure 2a for Figure 1 A schematic diagram of the positional relationship between the antenna unit of the first frequency band and the antenna unit of the second frequency band;

[0038] Figure 2b A schematic diagram of the connection structure of an antenna unit and a feeding network in a first frequency band in the related art;

[0039] Figure 3 This is a schematic diagram of the connection structure of the feeding network and the antenna unit in the embodiment of the present application;

[0040] Figure 4 for Figure 3 A top view of the embodiment shown;

[0041] Figure 5 for Figure 3 A schematic diagram of the three-dimensional structure of the feeding structure shown;

[0042] Figure 6 for Figure 5 An exploded schematic diagram of the feeding structure shown;

[0043] Figure 7 for Figure 5 , a schematic diagram of the connection structure between the first power dividing isolator and the balun isolator;

[0044] Figure 8 for Figure 5 , a schematic diagram of the connection structure between the second power dividing isolator and the balun isolator;

[0045] Fig. 9 for Figure 7 One of the partial structural diagrams;

[0046] Fig.10 for Figure 8 One of the partial structural diagrams;

[0047] Fig.11 for Figure 7 The second schematic diagram of the local structure;

[0048] Fig.12 for Figure 8 The second schematic diagram of the local structure;

[0049] Fig.13 for Figure 7 The third schematic diagram of the local structure;

[0050] Fig.14 for Figure 8 The third schematic diagram of the local structure;

[0051] Fig.15 for Figure 7 Schematic diagram of the local structure of the fourth;

[0052] Fig.16 for Figure 8 Schematic diagram of the local structure of the fourth;

[0053] Fig.17 for Figure 5 , a schematic diagram of the connection structure between the first power division feeder and the balun;

[0054] Fig.18 for Figure 5 , a schematic diagram of the connection structure between the second power splitter feeder and the balun;

[0055] Fig.19 for Fig.17 One of the partial structural diagrams;

[0056] Fig. 20 for Fig.18 One of the partial structural diagrams;

[0057] Fig.21 for Fig.17 The second schematic diagram of the local structure;

[0058] Fig. 22 for Fig.18 The second schematic diagram of the local structure;

[0059] Fig.23 for Fig.17 The third schematic diagram of the local structure;

[0060] Fig.24 for Fig.18 The third schematic diagram of the local structure;

[0061] Fig.25 for Fig.17 Schematic diagram of the local structure of the fourth;

[0062] Fig.26 for Fig.18 Schematic diagram of the local structure of the fourth;

[0063] Fig. 27 for Figure 5 , a schematic structural diagram of a first fixing member;

[0064] Fig.28 for Figure 5 , a schematic structural diagram of a third fixing member;

[0065] Fig.29 for Figure 5 , a schematic structural diagram of a second fixing member;

[0066] Fig.30 for Figure 5 , a schematic structural diagram of a fourth fixing member;

[0067] Fig.31 for Figure 5 , a schematic structural diagram of the first phase shifting unit;

[0068] Fig.32 for Figure 5 , a schematic structural diagram of the second phase shifting unit;

[0069] Fig.33 This is a schematic diagram of the three-dimensional structure of the feeding structure in the second embodiment of the present application;

[0070] Fig.34 for Fig.33 An exploded schematic diagram of the feeding structure shown;

[0071] Fig.35 for Fig.33 , a schematic diagram of the structure of the power divider isolation element;

[0072] Fig.36 for Fig.35 One of the partial structural diagrams;

[0073] Fig.37 for Fig.35 One of the partial structural diagrams;

[0074] Fig.38 for Fig.35 The second schematic diagram of the local structure;

[0075] Fig.39 for Fig.35 The second schematic diagram of the local structure;

[0076] Fig.40 for Fig.33 , schematic diagram of the structure of the balun isolator;

[0077] Fig.41 for Fig.33 , a schematic diagram of the connection structure between the second power splitter feeder and the balun;

[0078] Fig.42 for Fig.41 One of the partial structural diagrams;

[0079] Fig.43 for Fig.41 One of the partial structural diagrams;

[0080] Fig.44 for Fig.33 , a schematic structural diagram of a first fixing member;

[0081] Fig.45 for Fig.33 , a schematic structural diagram of a third fixing member;

[0082] Fig.46 for Fig.33 , a schematic structural diagram of a second fixing member;

[0083] Fig.47 for Fig.33 , a schematic structural diagram of the first phase shifting unit;

[0084] Fig.48 for Fig.33 , a schematic structural diagram of the second phase shifter.

[0085] Icons: 1-antenna; 2-receiver; 3-transmitter; 200-antenna unit; 100-feeding network; 101-phase shifting power division network; 102-feeding structure; 1021-phase shifter; 1022-power divider; 1023-transmission line; 10-first power division feeder; 20-second power division feeder; 11-first port; 12-second port; 13-signal transmission body; 131-first connecting part; 132-second connecting part; 133-signal input and output part; 134 - limiting groove; 14- extension body; 141- groove; 30- balun; 31- feeder; 311- first feeder; 312- second feeder; 313- limiting bump; 32- feeder pin; 40- power division isolator; 41- first power division isolation space; 42- second power division isolation space; 43- first power division isolator; 44- second power division isolator; 45- connection plate; 46- identification part; 431- first power division isolation part; 4311- first substrate; 4312 -first side plate; 432-second power division isolation part; 4321-second substrate; 4322-second side plate; 4323-accommodation groove; 4324-bottom pin; 4325-process hole; 4326-connection groove; 4327-protrusion; 4328-clamping space; 4329-avoidance groove; 434-top window; 433-side window; 50-balun isolation member; 51-isolation body; 511-barb groove; 512-third substrate; 513-third side plate; 52-isolation From the pin; 53-balun isolation space; 54-isolation welding pin; 61-first fixing member; 611-fixing body; 6111-clamping groove; 612-clamping part; 613-hook; 62-second fixing member; 621-fixing plate; 6211-through hole; 622-guide body; 623-boss; 63-third fixing member; 64-fourth fixing member; 70-first phase shifting part; 71-phase shifting body; 711-phase shifting groove; 72-baffle; 80-second phase shifting part. DETAILED DESCRIPTION

[0086] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0087] The term "and / or" herein is merely a description of the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone, wherein A and B may be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one (item)" refers to one or more, and "plurality" refers to two or more. "At least one of the following (items)" or similar expressions refers to any combination of these items, including any combination of single (items) or plural (items). For example, at least one (item) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or multiple.

[0088] The terms "first" and "second" in the description and claims of the embodiments of the present application are used to distinguish different objects rather than to describe a specific order of objects. For example, a first target object and a second target object are used to distinguish different target objects rather than to describe a specific order of target objects.

[0089] "Connected", "connected" and similar words are used to express the intercommunication or interaction between different components, which may include direct connection or indirect connection through other components. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, inclusion of a series of steps or units. Methods, systems, products or devices are not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. "Up", "down", "left", "right" and the like are only used relative to the orientation of the components in the drawings. These directional terms are relative concepts. They are used for description and clarification relative to the description, which may change accordingly according to the change of the orientation of the components in the drawings.

[0090] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0091] In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more than two. For example, multiple processing units refer to two or more processing units; multiple systems refer to two or more systems.

[0092] A base station usually includes Figure 1 Receiver 2, transmitter 3 and antenna 1 are shown. Receiver 2 and transmitter 3 are both electrically connected to antenna 1. Antenna 1 is the basis of current mobile communications and plays an important role in mobile communications. In order to meet the growing demand for mobile communication speed and bandwidth, it is necessary to design a communication system with higher speed and larger capacity. Antenna 1 evolves from the fourth-generation (4G) mobile communication technology to the fifth-generation (5G) mobile communication technology.

[0093] like Figure 1 As shown, the antenna 1 includes a plurality of antenna units 200 and a feed network 100, and the plurality of antenna units 200 are electrically connected to the feed network 100. The feed network 100 is also electrically connected to the receiver 2, and the feed network 100 is also electrically connected to the transmitter 3. The feed network 100 can receive the signal sent by the transmitter 3, and after reasonably distributing the signal in terms of amplitude and phase, transmit it to each antenna unit 200, thereby controlling the beam of the signal transmitted by the antenna 1. Of course, each antenna unit 200 can also receive a signal and send the signal to the receiver 2. Therefore, the feed network 100 is an important component of the antenna 1. It is an inevitable trend in the evolution of the antenna 1 to arrange the feed network 100 in the antenna 1 in a highly integrated, low-cost and miniaturized manner.

[0094] In a related technique, Figure 2a As shown, the antenna unit 200 in the antenna 1 includes an antenna unit 200a of a first frequency band and an antenna unit 200b of a second frequency band. To achieve an integrated design, the antenna unit 200b of the second frequency band is usually arranged below the antenna unit 200a of the first frequency band. In order to reduce the influence of the antenna unit 200a of the first frequency band on the signal radiation and reception of the antenna unit 200b of the second frequency band, as shown in FIG. Figure 2b As shown, the feeding network 100 is arranged on both sides of the antenna unit 200a of the first frequency band.

[0095] like Figure 2b As shown, the feed network 100 includes a circuit board ( Figure 2b The feeding structure 102 includes a phase shifter 1021, a power divider 1022, a transmission line 1023 and a balun ( Figure 2b1021 is electrically connected to the circuit board, the phase shifter 1021 is electrically connected to the power divider 1022, the power divider 1022 is electrically connected to the balun through the transmission line 1023, and the balun is electrically connected to the antenna unit 200 of the first frequency band. The phase shifter 1021 is also connected to the transmitter 3. In this way, the signal transmitted by the transmitter 3 can be transmitted to the antenna unit 200 of the first frequency band through the phase shifter 1021, the power divider 1022, the transmission line 1023 and the balun in sequence, and radiated through the antenna unit 200a of the first frequency band.

[0096] Since the feed network 100 is located on both sides of the antenna unit 200a of the first frequency band, the lateral size of the feed network 100 is relatively large, and it will also block the signal radiation of the antenna unit 200b of the second frequency band. In addition, there are too many manual solder joints between the transmission line 1023 and the balun, and the SMT reflow soldering method is not supported. When the transmission line 1023 is a microstrip line, the transmission loss is high; in order to reduce the transmission loss, a microstrip line with a multi-layer RF board structure can be used, which will result in higher costs. The power divider 1022 is usually implemented through a PCB board, which is not easy to perform SMT reflow soldering and is complicated to assemble.

[0097] In order to solve the above problem, in another related technology, the balun and the power divider 1022 are made into an integrated structure, so that there is no need to use the transmission line 1023. However, the power divider 1022 and the balun are both microstrip lines, and the microstrip line has a strong radiation field. In this way, when the power divider 1022 and the balun transmit signals, they are easily coupled with the components around the feed network 100 in the base station, resulting in large radiation loss, thereby affecting the radiation performance of the antenna unit 200.

[0098] Based on this, the embodiment of the present application provides a feeding network 100. Figure 3 As shown, the feed network 100 includes a circuit board ( Figure 3 ), the phase-shift power division network 101 and the feeding structure 102. The phase-shift power division network 101 is electrically connected to the circuit board, and the feeding structure 102 is electrically connected to the phase-shift power division network 101. That is, the bottom of the feeding structure 102 is mounted on the phase-shift power division network 101, and the phase-shift power division network 101 is mounted on the circuit board. Figure 4 As shown, the phase-shifting power division network 101 may be located between two sets of opposite antenna units 200 .

[0099] like Figure 5 and Figure 6 As shown, the feeding structure 102 includes: a first power division feed line 10 , at least two baluns 30 , a power division isolator 40 and a balun isolator 50 .

[0100] like Figure 6As shown, the first power division feeder 10 has a first port 11 and at least two second ports 12. Exemplarily, the first power division feeder 10 in this embodiment includes two second ports 12. A first power division isolation space 41 is formed on the power division isolation member 40, and the first power division feeder 10 is fixed on the first power division isolation member 40 and is located in the first power division isolation space 41.

[0101] like Figure 6 As shown, each balun 30 includes a feeder 31 and a feed pin 32, one end of the feeder 31 is connected to the second port 12, and the feed pin 32 is arranged at the end of the feeder 31 away from the second port 12. The balun isolator 50 includes an isolation body 51 and an isolation pin 52 located at one end of the isolation body 51, a balun isolation space 53 is formed on the isolation body 51, the feeder 31 is fixed on the balun isolator 50 and is located in the balun isolation space 53, and the feed pin 32 is arranged opposite to the isolation pin 52.

[0102] When the feeding structure 102 of the embodiment of the present application is used, the feeding pin 32 can be connected to Figure 4 The pads of the radiation surface of the antenna unit 200 of the first frequency band are electrically connected by soldering. The first port 11 of the first power division feeder 10 can be connected to Figure 1 The receiver 2 and transmitter 3 shown are electrically connected respectively. In the process of the antenna unit 200 radiating the signal, the transmitter 3 can send a signal to the first port 11 of the first power division feeder 10, and the first power division feeder 10 can divide the signal into multiple sub-signals, and transmit each sub-signal to the balun 30 through the second port 12. Then it is transmitted to the antenna unit 200 through the feeding pin 32 of the balun 30, and radiated through the antenna unit 200. After the antenna unit 200 receives the signal, the antenna unit 200 can transmit the signal to the balun 30 through the feeding pin 32, and transmit it to the second port 12 of the first power division feeder 10 through the balun 30, and transmit it to the first port 11 through the first power division feeder 10, and transmit it to the receiver 2 from the first port 11.

[0103] Since the power division isolator 40 has a first power division isolation space 41, and the first power division feeder 10 is located in the first power division isolation space 41, the power division isolator 40 can provide isolation for the first power division feeder 10, thereby reducing the coupling between the first power division feeder 10 and components in the external environment, thereby reducing radiation loss. Similarly, a balun isolation space 53 is formed on the balun isolator 50, and the feeder 31 is located in the balun isolation space 53. In this way, the balun isolator 50 can provide isolation for the balun 30, thereby reducing the coupling between the balun 30 and components in the external environment, thereby reducing radiation loss. In this way, the impact on the radiation signal of the antenna unit 200 can be reduced.

[0104] Moreover, in this embodiment, the balun 30 is connected to the first power division feeder 10 without the need for a transmission line 1023, thereby achieving advantages such as integration and miniaturization. The feed structure 102 is located below the antenna unit 200, thereby reducing the lateral size of the antenna. The feed network 100 is a frame-type structure as a whole, and can also reduce the shielding of the antenna unit 200 of the second frequency band, so as to reduce the impact on the signal radiation performance of the antenna unit 200 of the second frequency band. The feed structure 102 and the antenna unit 200 and the feed structure 102 and the phase-shifting power division network 101 can be welded by SMT reflow soldering. In addition, the balun 30, the first power division feeder 10, the power division isolator 40 and the balun isolator 50 can all be conductive materials, such as metal materials, specifically, copper, aluminum and other materials. In this way, since there is no need to use a microstrip line in this embodiment, the transmission loss can be reduced and the cost can be reduced.

[0105] like Figure 6 As shown, the feeding structure 102 may further include a second power division feeder 20, and the structure of the second power division feeder 20 may be the same as that of the first power division feeder 10. Exemplarily, the second power division feeder 20 may also include a first port 11 and two second ports 12. The second power division feeder 20 may also be a one-to-two power divider 1022.

[0106] like Figure 6 As shown, the feeder 31 of a part of the at least two baluns 30 is connected to the second port 12 of the first power division feeder 10, and the feeder 31 of the other part of the baluns 30 is connected to the second port 12 of the second power division feeder 20. Exemplarily, in this embodiment, the feeding structure 102 includes four baluns 30, wherein one end of two baluns 30 is respectively connected to the two second ports 12 of the first power division feeder 10, and one end of the other two baluns 30 is respectively connected to the two second ports 12 of the second power division feeder 20.

[0107] like Figure 6 As shown, a second power division isolation space 42 is also formed on the power division isolation element 40, and the second power division feeder 20 is fixed on the power division isolation element 40 and is located in the second power division isolation space 42. When the antenna unit 200 is a dual-polarized antenna unit 200, the feed network 100 needs to transmit signals of different polarization directions to the antenna unit 200. Since in this embodiment, the feed structure 102 also includes the second power division feeder 20, the first power division feeder 10 and the second power division feeder 20 can respectively receive signals of different polarization directions sent by the transmitter 3, and thus, the feed structure 102 of the present application can be applied to a base station using a dual-polarized antenna unit 200.

[0108] Based on this, Figure 6As shown, the power division isolator 40 includes a first power division isolator 43 and a second power division isolator 44. A first power division isolator 41 is formed on the first power division isolator 43, and a second power division isolator 42 is formed on the second power division isolator 44. The first power division isolator 43 and the second power division isolator 44 are arranged side by side. The first power division feeder 10 and the first power division isolator 43 can form a first power divider. Moreover, since the first power division feeder 10 has two second ports 12, the first power divider in this embodiment is a one-to-two power divider. The second power division feeder 20 and the second power division isolator 44 can form a second power divider. Similarly, the second power divider can also be a one-to-two power divider. In this way, the first power division isolator 43 and the second power division isolator 44 can isolate the first power division feeder 10 and the second power division feeder 20 respectively, thereby reducing the radiation loss between the sub-signal transmitted on the first power division feeder 10 and the sub-signal transmitted on the second power division feeder 20.

[0109] like Figure 7 As shown, the first power division isolator 43 includes a first power division isolating portion 431 and a second power division isolating portion 432 , wherein the second power division isolating portion 432 is disposed on the first power division isolating portion 431 , and an extending direction thereof forms an angle with the first power division isolating portion 431 .

[0110] like Figure 8 As shown, the second power division isolator 44 has the same structure as the first power division isolator 43 and is arranged opposite to each other. Exemplarily, the second power division isolator 44 also includes a first power division isolator portion 431 and a second power division isolator portion 432, wherein the second power division isolator portion 432 is arranged on the first power division isolator portion 431, and the extension direction has an angle with the first power division isolator portion 431. The first power division isolator 43 and the first power division isolator portion 431 of the second power division isolator 44 are arranged in a direction away from each other.

[0111] like Figure 7 As shown, the first power division isolation part 431 may include a first substrate 4311 and first side plates 4312 fixed on both sides of the first substrate 4311 , and the first substrate 4311 and the two first side plates 4312 may form a “U”-shaped structure.

[0112] like Figure 7As shown, the second power division isolation part 432 may include a second substrate 4321 and second side plates 4322 fixed on both sides of the second substrate 4321, and the second substrate 4321 and the two second side plates 4322 may form a "U"-shaped structure. The area enclosed between the first substrate 4311 and the two first side plates 4312 of the first power division isolator 43 and the area enclosed between the second substrate 4321 and the two second side plates 4322 are the first power division isolation space 41. Similarly, the area enclosed between the first substrate 4311 and the two first side plates 4312 of the second power division isolator 44 and the area enclosed between the second substrate 4321 and the two second side plates 4322 are the second power division isolation space 42.

[0113] like Figure 6 As shown, in this embodiment, the two second side plates 4322 on the first power division isolator 43 and the second power division isolator 44 that are close to each other are in contact and connected. In this case, the first power division isolator 43 and the second power division isolator 44 can be made separately, and then the first power division isolator 43 and the second power division isolator 44 are fixedly connected by bonding or welding. In this way, one of the second side plates 4322 on the first power division isolator 43 and one of the second side plates 4322 on the second power division isolator 44 are both located between the first power division feeder 10 and the second power division feeder 20, and the two first side plates 4312 can both play an isolating role for the first power division feeder 10 and the second power feeder 20, thereby further reducing radiation loss. In other embodiments, the two second side plates 4322 on the first power division isolator 43 and the second power division isolator 44 that are close to each other are in contact but not connected; or, there is a gap between the two second side plates 4322 on the first power division isolator 43 and the second power division isolator 44 that are close to each other.

[0114] like Fig. 9 and Fig.10 As shown, a plurality of receiving grooves 4323 are provided on the second side plates 4322 of the first power division isolator 43 and the second power division isolator 44, and a bottom pin 4324 can be formed between two adjacent receiving grooves 4323 on the same second side plate 4322, and the receiving groove 4323 is provided on the side of the second side plate 4322 away from the second substrate 4321. When the feeding structure 102 is used, the second side plate 4322 of the first power division isolator 431 needs to be welded to the phase-shifting power division network 101. The bottom pin 4324 can be welded to the phase-shifting power division network 101, for example, by applying solder paste to the bottom pin 4324 and the receiving groove 4323, and solidifying the solder paste by reflow soldering. The receiving groove 4323 can accommodate more solder paste, thereby improving the welding stability between the first power division isolator 431 and the phase-shifting power division network 101.

[0115] like Fig. 9 and Fig.10 As shown, a process hole 4325 is provided at the connection between the second substrate 4321 and the second side plate 4322, so that it is convenient to form the first power division isolator 43 by bending the sheet metal.

[0116] like Fig.17 and Fig.18 As shown, the first power feeder 10 and the second power feeder 20 may include a signal transmission body 13 and extension bodies 14 extending from both sides of the signal transmission body 13. One end of the extension body 14 away from the signal transmission body 13 is connected to one end of the balun 30.

[0117] like Figure 6 As shown, the signal transmission body 13 of the first power division feeder 10 is fixed on the first power division isolation part 431 of the first power division isolation body 43. Exemplarily, the signal transmission body 13 of the first power division feeder 10 is fixed between the first substrate 4311 of the first power division isolation body 43 and the first side plates 4312 on both sides. In this way, the first substrate 4311 of the first power division isolation body 43 and the two first side plates 4312 can both isolate the signal transmission body 13 of the first power division feeder 10, that is, the first power division isolation part 431 can provide three-directional isolation for the signal transmission body 13. When the feeding structure 102 is used, the feeding structure 102 can be fixed on the circuit board through the phase-shifting power division network 101, so that the circuit board, the first substrate 4311 of the first power division isolation part 431 and the two first side plates 4312 can provide four-directional isolation for the signal transmission body 13, thereby further reducing radiation loss. Moreover, the structural form between the signal transmission body 13 and the first power division isolation part 431 is a quasi-coaxial structure.

[0118] like Figure 6 As shown, the signal transmission body 13 of the second power division feeder 20 is fixed on the first power division isolation part 431 of the second power division isolator 44. Exemplarily, the signal transmission body 13 of the second power division feeder 20 is fixed between the first substrate 4311 of the second power division isolator 44 and the first side plates 4312 on both sides.

[0119] like Figure 6As shown, the extension bodies 14 on both sides of the first power division feeder 10 are fixed on the second power division isolation part 432 of the first power division isolation body 43. Exemplarily, the extension body 14 is located between the second substrate 4321 and the second side plate 4322 of the second power division isolation part 432. In this way, the second substrate 4321 and the two second side plates 4322 can both isolate the extension body 14, that is, the second power division isolation part 432 can provide three-directional isolation for the extension body 14. When the feeding structure 102 is applied, the feeding structure 102 can be fixed on the circuit board through the phase-shifting power division network 101, so that the circuit board, the second substrate 4321 of the second power division isolation part 432 and the two second side plates 4322 can provide four-directional isolation for the extension body 14, thereby further reducing radiation loss. Moreover, the structural form between the extension body 14 and the second power division isolation part 432 is a quasi-coaxial structure. Similarly, the extension bodies 14 on both sides of the second power division feed line 20 are fixed on the second power division isolation portion 432 of the second power division isolation body 44 .

[0120] In this embodiment, the first power division isolator 43 may be an integrally formed structure, and the second power division isolator 44 may also be an integrally formed structure. In this way, in order to facilitate bending the second power division isolator 44 to form two first side plates 4312, as shown in FIG. Fig.11 As shown, the length L2 of the first side plate 4312 can be less than the length L1 of the first substrate 4311, and the end of the first side plate 4312 away from the second power division isolating part 432 is flush with the first substrate 4311. In other words, there is a gap between the first side plate 4312 and the first power division isolating body 43, and the second power division isolating body 44 cannot provide isolation for the signal transmission body 13 at the gap. Based on this, the end of the signal transmission body 13 close to the extension body 14 is closer to the first substrate 4311 than the end away from the extension body 14, that is, the signal transmission body 13 is closer to the first substrate 4311. The end of the signal transmission body 13 away from the extension body 14 needs to be connected to the circuit board through the phase-shifting power division network 101. When the signal transmission body 13 is closer to the first substrate 4311, it can ensure that the end of the signal transmission body 13 away from the extension body 14 is connected to the circuit board through the phase-shifting power division network 101, and it can also enable the first substrate 4311 to provide a better isolation effect for the part of the signal transmission body 13 closer to it.

[0121] Furthermore, if Fig.23 and Fig.24As shown, the signal transmission body 13 includes two first connection parts 131, two second connection parts 132 and a signal input-output part 133, and the two first connection parts 131 are respectively connected to the signal input-output part 133 through the two second connection parts 132. The two first connection parts 131 are respectively connected to the two extension bodies 14, and the distance between the second connection part 132 and the first substrate 4311 is smaller than the distance between the first connection part 131 and the first substrate 4311, and larger than the distance between the signal input-output part 133 and the first substrate 4311. The first connection part 131 corresponds to the gap, and the first connection part 131 is closest to the first substrate 4311, thereby improving the isolation effect of the first substrate 4311 on the first connection part 131. The signal input-output part 133 is farthest from the first substrate 4311, that is, the signal input-output part 133 is closest to the bottom of the feeding structure 102, thereby facilitating connection to the circuit board through the phase-shifting power division network 101. The second connection part 132 also serves to connect the first connection part 131 and the signal input-output part 133. When the distance between the second connection part 132 and the first substrate 4311 is greater than the distance between the first connection part 131 and the first substrate 4311, and is smaller than the distance between the signal input-output part 133 and the first substrate 4311, the second connection part 132 can be located in the middle of the first side plate 4312, thereby making the second power division isolation part 432 have a better isolation effect on the signal transmission body 13.

[0122] like Fig.13 and Fig.14 As shown, a connecting groove 4326 is provided on the side of the second side plate 4322 away from the second substrate 4321, and the connecting groove 4326 is provided on the second side plate 4322 away from the first power dividing isolator 43 and the second power dividing isolator 44. A protrusion 4327 is provided on the groove wall of the connecting groove 4326, and the protrusion 4327 forms a clamping space 4328 with the groove wall.

[0123] like Figure 6 As shown, the feeding structure 102 may further include two first fixing members 61. Fig. 27 As shown, the first fixing member 61 includes a fixing body 611, two clamping parts 612 and at least two barbs 613. The two clamping parts 612 are respectively fixed to two sides of the fixing body 611. The fixing body 611 is also provided with two parallel clamping grooves 6111, and the two barbs 613 are respectively fixed to the groove walls of the two clamping grooves 6111.

[0124] Fig.23 The two first connecting parts 131 or the second connecting parts 132 of the signal transmission body 13 shown in the figure can be respectively inserted into Fig. 27The first connection part 131 or the second connection part 132 is limited by the hook 613 in the snap-in groove 6111 shown in the figure. The two snap-in parts 612 of the first fixing member 61 are respectively snapped into the connection grooves 4326 of the first power division isolator 43 and the second power division isolator 44 and are located in the snap-in space 4328. In this way, the two first fixing members 61 can respectively fix the signal transmission body 13 of the first power division feeder 10 and the signal transmission body 13 of the second power division feeder 20 on the first power division isolator 43 and the second power division isolator 44, which not only realizes the fixation between the signal input body and the first power division isolator 43, but also can realize the fixation between the first power division isolator 43 and the second power division isolator 44. In addition, the snap-in connection method makes assembly more convenient and the connection more reliable. The snap-in part 612 is a boss or an elastic arm. Therefore, the structure of the snap-in part 612 is simple and easy to implement.

[0125] like Fig.25 and Fig.26 As shown, both the first power division feeder 10 and the second power division feeder 20 are provided with a limiting protrusion 313 and a limiting groove 134. The limiting protrusion 313 is inserted into the clamping groove 6111, and the barb 613 is clamped on the limiting protrusion 313 and partially located in the limiting groove 134. In this way, the limiting protrusion 313 and the limiting groove 134 can play a limiting role for the first fixing member 61, so that the first power division feeder 10 and the second power division feeder 20 can be fixed on the power division isolation member 40 through the first fixing member 61.

[0126] like Figure 6 As shown, the feeding structure 102 may further include three third fixing members 63 arranged along the length direction of the extension body 14, and the third fixing members 63 may fix the extension body 14 to the first power dividing isolating body 43 and the second power dividing isolating body 44. The third fixing members 63 have a similar structure to the first fixing member 61, as shown in FIG. Fig.28 As shown, it also includes a fixed body 611, two clamping parts 612 and at least two barbs 613. The two clamping parts 612 are respectively fixed to the two sides of the fixed body 611. The fixed body 611 is also provided with two parallel clamping grooves 6111, and the two barbs 613 are respectively fixed to the groove walls of the two clamping grooves 6111. Figure 6 The extension body 14 shown is fixed to the first power division isolator 43 and the second power division isolator 44 through the third fixing member 63. Moreover, the connection method between the extension body 14, the third fixing member 63 and the first power division isolator 43 and the second power division isolator 44 can be the same as the connection method between the first fixing member 61, the first power division feeder 10, the second power division feeder 20 and the first power division isolator 43 and the second power division isolator 44, which will not be repeated here.

[0127] like Figure 6As shown, the feeding structure 102 may further include a fourth fixing member 64. The fourth fixing member 64 is similar in structure to the first fixing member 61, and also includes a fixing body 611, two clamping portions 612 and at least two barbs 613. The two clamping portions 612 are respectively fixed to the two sides of the fixing body 611. Two parallel clamping grooves 6111 are also provided on the fixing body 611, and the two barbs 613 are respectively fixed to the groove walls of the two clamping grooves 6111. The balun 30 is fixed to the balun isolator 50 through the fourth fixing member 64. Moreover, the connection method between the balun 30, the fourth fixing member 64 and the first power division isolator 43 and the second power division isolator 44 may be the same as the connection method between the first fixing member 61, the first power division feeder 10, the second power division feeder 20 and the first power division isolator 43 and the second power division isolator 44, which will not be repeated here.

[0128] Moreover, if Fig.11 As shown, the bottoms of the two first side plates 4312 away from each other of the first power division isolator 43 and the second power division isolator 44 are both provided with avoidance grooves 4329 to avoid Figure 6 The third fixing member 63 is shown.

[0129] like Fig.21 and Fig. 22 As shown, two opposite sides of the extension body 14 are provided with corresponding grooves 141, so that the grooves 141 on the extension body 14 can achieve impedance matching. In another possible implementation, two opposite sides of the feed body 31 are provided with corresponding grooves, so that the grooves on the feed body 31 can achieve impedance matching.

[0130] like Figure 6 As shown, the feeding structure 102 further includes a second fixing member 62. Fig.29 As shown, the second fixing member 62 includes a fixing plate 621, a guide body 622 fixed to the top of the fixing plate 621, and a boss 623 fixed to the bottom of the fixing plate 621. The fixing plate 621 is provided with a plurality of through holes 6211. Figure 6 The balun 30 and the balun isolator 50 shown in FIG. Figure 6 As shown, portions of the feeding pin 32 and the isolation pin 52 are inserted into the through hole 6211 and extend out of the fixing plate 621 .

[0131] like Fig.15 and Fig.16 As shown, each balun isolator 50 is provided with a barb groove 511 at the top. The barb groove 511 may be a groove with a barb on the groove wall. In this way, the boss 623 of the second fixing member 62 may be fixed in the barb groove 511, thereby, the second fixing member 62 may be fixed to the balun 30 and the balun isolator 50, and the second fixing member 62 may provide an auxiliary connection for the balun 30 and the balun isolator 50.

[0132] and, Figure 4 The bottom surface of the antenna unit 200 shown may generally be provided with a guide hole. In the process of installing the antenna unit 200 on the feed structure 102, the installation position of the antenna on the feed structure 102 may be positioned through the guide body 622 and the guide hole, thereby achieving rapid positioning. In addition, if there is no guide body 622, the installation position of the antenna unit 200 needs to be positioned through the feed pin 32 and the isolation pin 52, which will cause damage to the feed pin 32 or the isolation pin 52. Therefore, the provision of the guide body 622 can also protect the feed pin 32 and the isolation pin 52.

[0133] like Figure 6 As shown, the feeding structure 102 also includes a first phase shifter 70, which is fixed between the first power division feeder 10 and the power division isolator 40. The first phase shifter 70 is also fixed between the second power division feeder 20 and the power division isolator 40. The first phase shifter 70 is used to perform phase shift processing on the signals transmitted on the first power division feeder 10 and the second power division feeder 20, respectively.

[0134] like Fig.31 As shown, the first phase shifting portion 70 includes a phase shifting body 71, a plurality of baffles 72, a plurality of bosses 623 and a plurality of clamping portions 612. The phase shifting body 71 is provided with two parallel phase shifting grooves 711. Fig.17 The extension body 14 shown is located in the phase shift groove 711, and the space in the phase shift groove 711 and the groove wall can perform phase shift processing on the signal transmitted on the extension body 14. Four clamping grooves 6111 are also provided on the phase shift body 71, two of which are located at one end of the phase shift groove 711, and the other two are located at the other end of the phase shift groove 711, and the plurality of clamping portions 612 are respectively on the groove walls of the clamping grooves 6111. Fig.17 The extension body 14 shown can be inserted into the snap-fitting groove 6111 via the snap-fitting portion 612 .

[0135] like Fig.31 As shown, some of the baffles 72 are located between the phase shifting groove 711 and the clamping groove 6111 at one end, and another part of the baffles 72 is located between the phase shifting groove 711 and the clamping groove 6111 at the other end. Fig.17 The extension body 14 shown abuts against the extension body 14 to limit the extension body 14 .

[0136] In this way, the first phase shifter 70 can not only play the role of fixing the second power division feeder 20 and the power division isolator 40, but also has a phase shifting effect. Moreover, the first phase shifter 70 is located on one side of the signal transmission body 13, that is, the first phase shifter 1021 only performs phase shifting processing on the signal transmitted by the extension body 14 located on one side of the signal transmission body 13, thereby realizing the prefabricated phase of the signal transmitted from the extension body 14 on one side relative to the signal transmitted from the extension body 14 on the other side, thereby realizing the prefabricated downtilt angle of the antenna radiation beam. It can be understood that the connection method between the first phase shifter 70, the power division isolator 40, the first power division feeder 10 and the second power division feeder 20 is similar to the connection method between the first fixing member 61, the power division isolator 40, the first power division feeder 10 and the second power division feeder 20, and will not be repeated here.

[0137] like Figure 6 As shown, the feeding structure 102 also includes a second phase shifter 80, which is located on the same side of the signal transmission body 13 as the first phase shifter 70. The balun 30 is fixed to the balun isolation element 50 through the second phase shifter 80, and the second phase shifter 80 is used to perform phase shift processing on the signal transmitted on the balun 30.

[0138] like Fig.32 As shown, the second phase shifter 80 includes a phase shifter body 71, a clamping portion 612 and a boss 623. The boss 623 is arranged on both sides of the phase shifter body 71. A phase shifter groove 711 is arranged on the phase shifter body 71, and the balun 30 is located in the phase shifter groove 711. The space in the phase shifter groove 711 and the groove wall can perform phase shift processing on the signal transmitted on the balun 30. Four clamping grooves 6111 are also arranged on the phase shifter body 71, wherein two clamping grooves 6111 are located at one end of the phase shifter groove 711, and the other two clamping grooves 6111 are located at the other end of the phase shifter groove 711. The clamping portion 612 is located in the clamping groove 6111, and the protrusion 4327 on the balun 30 is clamped into the clamping groove 6111 through the clamping portion 612.

[0139] The phase shift amount of the phase shift part is related to the length of the phase shift part along the signal transmission direction. Since the first fixing member 61 is also fixed between the extension body 14 and the power division isolator 40, the length of the extension body 14 along the signal transmission direction is limited, and the length of the first phase shift part 70 is limited. The phase shift amount of the first phase shift part 70 cannot meet the phase shift amount requirement. The second phase shift part 80 can perform phase shift processing on the signal transmitted from the extension body 14 to the balun 30 and transmitted on the balun 30. Since the first phase shift part 70 and the second phase shift part 80 are located on the same side of the signal transmission body 13, the signal transmitted on the balun 30 can be phase shifted by the first phase shift part 70 and the second phase shift part 80 respectively. The phase shift amount of the feeding structure 102 is the sum of the phase shift amount of the first phase shift part 70 and the phase shift amount of the second phase shift part 80, thereby increasing the phase shift amount of the feeding structure 102, thereby meeting the phase shift amount requirement.

[0140] In addition, since the first phase shifter 70 and the second phase shifter 80 are provided on one side of the signal transmission body 13, and no phase shifter is provided on the other side, in order to facilitate the distinction of directions, as shown in FIG. Fig.11 and Fig.12 As shown, a marking portion 46 may be provided on the power dividing isolator 40 at one side where the first phase shifter 1021 is located, thereby facilitating installation.

[0141] like Fig.17 and Fig.18 As shown, the feeder 31 includes a first feeder 311 connected to the first power division feeder 10 or the second power division feeder 20 and a second feeder 312 connected to the first feeder 311, and the second feeder 312 is connected to an end of the first feeder 311 away from the first power division feeder 10 or the second power division feeder 20. The feeding pin 32 is fixed to an end of the second feeder 312 away from the first feeder 311. The width of the second feeder 312 may be greater than the width of the first feeder 311. Figure 6 The second phase shifter 80 shown can be fixedly connected to the first feeding unit 311 of the balun 30. Figure 6 In the balun isolation space 53 of the balun isolation element 50 shown, therefore, when the width of the second feeding portion 312 is smaller than the width of the first feeding portion 311 , sufficient space can be provided for the installation of the second phase shifter 80 .

[0142] like Fig.17 As shown, the lengths of the two baluns 30 connected to the first power division feeder 10 may be the same, and the lengths of the first feeding section 311 and the second feeding section 312 may be different. Since the second phase shifter 80 is only fixed to one of the baluns 30a, the length of the second feeding section 312 of the balun 30b to which the second phase shifter 80 is not fixed may be longer than the length of the second feeding section 312 of the balun 30a to which the second phase shifter 80 is fixed.

[0143] like Fig.25 and Fig.26 As shown, the feeder 31 may further include a limiting protrusion 313 fixed on the first feeding portion 311. Figure 6 The second phase shifting portion 80 shown in the figure abuts against the limiting protrusion 313, so that the limiting protrusion 313 can be Figure 6 The second phase shifting portion 80 shown in the figure provides a limit. Moreover, in order to avoid interference between the second phase shifting portion 80 and the limit protrusion 313, resulting in a lower installation accuracy of the second phase shifting portion 80, as shown in FIG. Fig.25 As shown, a limiting groove 134 is further provided on the first feeding portion 311 , and a groove wall of the limiting groove 134 is connected to a side wall of the limiting protrusion 313 .

[0144] like Fig.19 and Fig. 20 As shown, the feeding pin 32 is in an "L" shape, and the feeding pin 32 is located on one side of the second feeding portion 312. Fig.17 As shown, the feeding pins 32 of the two baluns 30 connected to the first power division feeder 10 are connected in the same direction, that is, they are located on the same side of the second feeding portion 312 .

[0145] like Fig.17 As shown, the first power division feeder 10 and the two baluns 30 fixed on the first power division feeder 10 form an integrated structure. In this way, the first power division feeder 10 and the two baluns 30 can be manufactured together, thereby simplifying the manufacturing process of the feeding structure 102. Fig.18 As shown, the second power division feeder 20 and the two baluns 30 fixed on the second power division feeder 20 form an integrated structure. In this way, the first power division feeder 10 and the two baluns 30 can be manufactured together, thereby simplifying the manufacturing process of the feeding structure 102.

[0146] like Figure 6 As shown, the number of balun isolators 50 is the same as the number of baluns 30. In this embodiment, the number of balun isolators 50 and the number of baluns 30 are both four. Fig.15 As shown, the isolation body 51 includes a third substrate 512 and third side panels 513 located on both sides of the third substrate 512. The third substrate 512 and the two third side panels 513 can form a "U"-shaped structure.

[0147] like Figure 7As shown, two balun isolators 50 are fixed at both ends of the first power division isolator 43, and the first power division isolator 431 and the two balun isolators 50 fixed on the first power division isolator 43 form an integrated structure. Exemplarily, the first power division isolator 43 and the two balun isolators 50 can be manufactured by cutting, bending, and other processes on the sheet metal. In this way, the first power division isolator 43 and the two balun isolators 50 can be manufactured together, thereby simplifying the manufacturing process of the feeding structure 102.

[0148] like Figure 8 As shown, the other two balun isolators 50 are fixed at both ends of the second power division isolator 44, and the second power division isolator 44 and the two balun isolators 50 fixed on the second power division isolator 44 form an integrated structure. Exemplarily, the second power division isolator 44 and the two balun isolators 50 can be manufactured by cutting, bending and other processes on the sheet metal. In this way, the second power division isolator 44 and the two balun isolators 50 can be manufactured together, thereby simplifying the manufacturing process of the feeding structure 102.

[0149] like Figure 6 As shown, the two balun isolators 50 located on the same side of the first power division feeder 10 and the second power division feeder 20 are arranged opposite to each other, that is, the third side plates 513 are arranged in opposite directions. In this way, a balun isolation space 53 can be formed between the two third substrates 512 and the four third side plates 513. The two baluns 30 located on the same side of the first power division feeder 10 and the second power division feeder 20 are both located in the balun isolation space 53 on the same side as the two baluns.

[0150] In other embodiments of the present application, Fig.33 and Fig.34 As shown, Figure 6 The differences between the illustrated embodiments are that the structure of the power divider isolator 40, the number and structure of the balun 30 and the balun isolator 50, the manufacturing method of the feeding structure 102, the first fixing member 61, the second fixing member 62, the third fixing member 63, the first phase shifter 70 and the second phase shifter 80 are different.

[0151] In an embodiment, Fig.36 and Fig.39 As shown, the power division isolator 40 may include a connecting plate 45 in addition to the first power division isolator 43 and the second power division isolator 44. Fig.39 As shown, there is a gap between the two second side plates 4322 on the first power division isolator 43 and the second power division isolator 44, and they are connected by a connecting plate 45. Fig.35 and Fig.38As shown, the power division isolator 40 may be an integrally formed structure, so as to improve the strength of the power division isolator 40. The connecting plate 45 may be a plate with an arc, so as to facilitate the production of the power division isolator 40 by a bending process.

[0152] like Fig.36 As shown, top opening windows 434 are provided at opposite positions on the first power division isolator 43 and the second power division isolator 44, and the balun 30 can pass through the bottom of the top opening window 434 to extend out of the top. Fig.37 As shown, a side window 433 is further provided on the first side plate 4312 which is away from the first power dividing isolator 43 and the second power dividing isolator 44 , so that the first fixing member 61 or the first phase shifter 1021 can be avoided.

[0153] like Fig.34 As shown, the number of balun isolation elements 50 is two. Fig.40 As shown, the cross section of the isolation body 51 of each balun isolator 50 is a ring-shaped cross section with an opening, so that a balun isolation space 53 can be formed inside each balun isolator 50, and the balun isolator 50 can adopt an integrally formed structure, thereby improving the strength of the balun isolator 50. Fig.34 As shown, the two baluns 30 located on one side of the first power division feeder 10 and the second power division feeder 20 are located in a balun isolation space 53 formed in one of the balun isolation components 50, and the two baluns 30 located on the other side of the first power division feeder 10 and the second power division feeder 20 are located in a balun isolation space 53 formed in another balun isolation component 50.

[0154] like Fig.40 As shown, the balun isolation member 50 may also include a Fig.34 The isolation welding pin 54 at one end of the first power division feeder 10 is a plate-shaped structure, and the extension direction thereof forms an angle with the extension direction of the isolation body 51. The isolation welding pin 54 can be fixed to Fig.34 On the power divider isolation element 40 shown.

[0155] The two opposite surfaces of the balun isolator 50 are also provided with side windows 433 to avoid Fig.34 The first phase shifter 70 is shown.

[0156] Each balun isolator 50 is an integrally formed structure and is soldered to the power divider isolator 40 by soldering.

[0157] like Fig.41 and Fig.42 As shown, the feeding pin 32 of the balun 30 extends in a straight line and is provided with opposite limiting bumps 313. Fig.43As shown, two opposite sides of the extension body 14 of the balun 30 are provided with corresponding grooves 141, so that impedance matching can be achieved.

[0158] like Fig.44 The first fixing member 61 shown in FIG. Fig.45 The clamping portion 612 on the third fixing member 63 shown is an elastic arm structure. Fig.34 As shown, the number of the second fixing members 62 is four, two of which are fixed to one balun isolating member 50, and the other two second fixing members 62 are fixed to another balun isolating member 50. Fig.46 As shown, the second fixing member 62 includes a fixing plate 621 and bosses 623 extending from both sides of the fixing plate 621. A through hole 6211 is provided on the second fixing member 62.

[0159] like Fig.34 As shown, the number of the first phase shifting parts 70 is two, and the two first phase shifting parts 70 are connected along the length direction. Fig.47 As shown, the number of the clamping grooves 6111 on the first phase shifting portion 70 is two, and the number of the baffles 72 is also two.

[0160] like Fig.30 As shown, there are two second phase shifters 80, and the two second phase shifters 80 are arranged side by side. One of the second phase shifters 80 is connected to one of the two baluns 30 on the same side, and the other second phase shifter 80 is connected to the other balun 30. Fig.48 As shown, both sides of the phase shift body 71 of the second phase shift portion 80 are provided with bosses 623 to Fig.34 The first power dividing isolator 43 and the second side plate 4322 of the second power dividing isolator 44 are fixedly connected.

[0161] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A feeding structure, characterized in that: include: A first power division feeder having a first port and at least two second ports; At least two baluns, each of the baluns comprises a feeder and a feed pin, the feeders of the at least two baluns are respectively connected to the at least two second ports, and the feed pin is arranged at one end of the feeder away from the second port; A power division isolator, wherein a first power division isolation space is formed on the power division isolator, and the first power division feeder is fixed on the first power division isolator and is located in the first power division isolation space; A balun isolator is formed with a balun isolation space, and the feeder is fixed on the balun isolator and located in the balun isolation space.

2. The feeding structure according to claim 1, characterized in that: The feeding structure further includes a second power division feeder, the second power division feeder having a first port and at least two second ports, a feeder of a part of the at least two baluns being connected to the second port of the first power division feeder, and a feeder of another part of the baluns being connected to the second port of the second power division feeder; A second power division isolation space is also formed on the power division isolation element, and the second power division feeder is fixed on the power division isolation element and is located in the second power division isolation space.

3. The feeding structure according to claim 2, characterized in that: The power division isolator comprises a first power division isolator and a second power division isolator. The first power division isolator forms the first power division isolation space, the second power division isolation space is formed on the second power division isolator, and the first power division isolator and the second power division isolator are arranged side by side.

4. The feeding structure according to claim 3, characterized in that: The first power division isolator and the second power division isolator both include a first power division isolator portion and a second power division isolator portion provided on the first power division isolator portion and extending in a direction that forms an angle with the first power division isolator portion; The first power division feeder and the second power division feeder both include a signal transmission body and extension bodies extending from both sides of the signal transmission body, the signal transmission bodies of the first power division feeder and the second power division feeder are respectively fixed on the first power division isolation parts of the first power division isolator and the second power division isolator, and the extension bodies of the first power division feeder and the second power division feeder are respectively fixed on the second power division isolation parts of the first power division isolator and the second power division isolator.

5. The feeding structure according to claim 4, characterized in that: The first power dividing and isolating part includes a first substrate and first side plates fixed on both sides of the first substrate, and the signal transmission body is located between the first substrate and the first side plates on both sides; And / or, the second power division isolation part includes a second substrate and second side plates fixed on both sides of the second substrate, and the extension body is located between the second substrate and the second side plates of the second power division isolation part.

6. The feeding structure according to claim 5, characterized in that: Two second side plates on the first power dividing isolator and the second power dividing isolator that are close to each other are in contact and connected.

7. The feeding structure according to claim 5, characterized in that: The power division isolator also includes a connecting plate, and two second side plates close to each other on the first power division isolator and the second power division isolator have a spacing between them and are connected by the connecting plate.

8. The feeding structure according to claim 7, characterized in that: The power division isolator is an integrally formed structure.

9. The feeding structure according to any one of claims 5 to 8, characterized in that: The length of the first side plate is smaller than the length of the first substrate, and an end of the first side plate away from the second power dividing and isolating portion is flush with the first substrate; An end of the signal transmission body close to the extension body is closer to the first substrate than an end of the signal transmission body far from the extension body.

10. The feeding structure according to any one of claims 5 to 9, characterized in that: The signal transmission body includes a first connecting part, a second connecting part and a signal input-output part which are connected in sequence, the first connecting part is connected to the extension body, the distance between the second connecting part and the first substrate is smaller than the distance between the first connecting part and the first substrate, and larger than the distance between the signal input-output part and the first substrate.

11. The feeding structure according to any one of claims 5 to 10, characterized in that: The second side panels of the first power division isolator and the second power division isolator are both provided with a plurality of accommodating grooves, a bottom pin is formed between two adjacent accommodating grooves on the same second side panel, and the accommodating grooves are arranged on the side of the second side panel away from the second substrate.

12. The feeding structure according to any one of claims 5 to 11, characterized in that: A connecting groove is provided on a side of the second side plate facing away from the second base plate, a protrusion is provided on a groove wall of the connecting groove, and a clamping space is formed between the protrusion and the groove wall; The feeding structure further includes a first fixing member, wherein the first fixing member includes a fixing body and a clamping portion fixed on the fixing body; The first power division feeder and / or the second power division feeder are fixed to the first power division isolator and the second power division isolator via the first fixing member, and the clamping portion is clamped into the connecting groove and is located in the clamping space.

13. The feeding structure according to claim 12, characterized in that: The clamping portion is a boss or an elastic arm.

14. The feeding structure according to claim 4, 5, 9 or 10, characterized in that: Two opposite side surfaces of the extension body are provided with grooves at corresponding positions; or two opposite side surfaces of the feed body are provided with grooves at corresponding positions.

15. The feeding structure according to claim 12 or 13, characterized in that: The first power division feeder and the second power division feeder are both provided with a limiting protrusion and a limiting groove; A clamping groove is formed on the fixing body, the first fixing member also includes a barb fixed on the groove wall of the clamping groove, the limiting protrusion is located in the clamping groove, the barb is clamped on the limiting protrusion and partially located in the limiting groove.

16. The feeding structure according to any one of claims 1 to 15, characterized in that: The feeding structure also includes a second fixing member, which includes a fixing plate and a guide body fixed on the fixing plate. The fixing plate is provided with a plurality of through holes. The fixing plate is fixed on the balun, and parts of the feeding pins are inserted into the through holes and extend out of the fixing plate.

17. The feeding structure according to any one of claims 2 to 7, 9, 12 or 15, characterized in that: The first power division feeder and the second power division feeder each include a signal transmission body and extension bodies extending from two sides of the signal transmission body respectively; The feeding structure also includes a first phase shifter located on one side of the signal transmission body, the first phase shifter is fixed between the first power division feeder and the power division isolator, and the first phase shifter is also fixed between the second power division feeder and the power division isolator, and the first phase shifter is used to perform phase shift processing on the signals transmitted on the first power division feeder and the second power division feeder, respectively.

18. The feeding structure according to claim 17, characterized in that: The feeding structure also includes a second phase shifter, which is located on the same side of the signal transmission body as the first phase shifter. The balun is fixed to the balun isolation component through the second phase shifter, and the second phase shifter is used to perform phase shift processing on the signal transmitted on the balun.

19. The feeding structure according to any one of claims 1 to 18, characterized in that: The number of the balun isolation components is multiple and is the same as the number of the baluns; the balun isolation component includes an isolation body, the isolation body includes a third substrate and third side plates located on both sides of the third substrate, and the third side plates of every two isolation bodies are arranged opposite to each other to form the balun isolation space.

20. The feeding structure according to any one of claims 1 to 18, characterized in that: The balun isolation element includes an isolation body, and a cross section of the isolation body is a ring-shaped cross section with an opening.

21. The feeding structure according to claim 19 or 20, characterized in that: The balun isolation component further includes an isolation pin located at one end of the isolation body, and the feeding pin is arranged opposite to the isolation pin.

22. The feeding structure according to any one of claims 1 to 21, characterized in that: The first power division feeder and at least two of the baluns form an integrated structure.

23. The feeding structure according to any one of claims 1 to 22, characterized in that: The power divider isolator and at least two balun isolators form an integrated structure.

24. A feeding network, characterized in that: It comprises a circuit board, a phase-shift power division network and a feeding structure as described in any one of claims 1 to 23, wherein the phase-shift power division network is electrically connected to the circuit board, and the feeding structure is electrically connected to the phase-shift power division network.

25. An antenna, characterized in that: The invention comprises a plurality of antenna units and the feeding network as claimed in claim 24, wherein the antenna units are electrically connected to the feeding network.

26. A base station, characterized in that: The invention comprises a receiver, a transmitter and the antenna as claimed in claim 25, wherein the receiver and the transmitter are both electrically connected to the antenna.

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