Signal transmitting and receiving device, feed structure and antenna

Abstract

The embodiment of the invention discloses a signal transmitting and receiving device, a feed structure and an antenna, and the signal transmitting and receiving device comprises a first cavity which is provided with a first interface, a first filter circuit which is arranged in the first cavity and of which the first end is connected with the first interface, and a second cavity which is provided with a second interface and a third interface, the first filter circuit is arranged in the first cavity, the second filter circuit is arranged in the second cavity, a first end of the second filter circuit is connected with the second interface, and the connecting component comprises a first end, a second end and a third end which are opposite to each other; the first end of the connecting part is connected with the second end of the first filter circuit, the third end of the connecting part is connected with the second end of the second filter circuit, and the second end of the connecting part is connected with the third interface; the connecting component is used for transmitting signals of a first frequency band and a second frequency band. The connecting component adopts an integrated structure, so that the assembly tolerance is reduced, and the passive intermodulation performance of the signal transmitting and receiving device is improved.

Description

[0001] This application is a divisional application of the Chinese invention patent with application number "202080105270.2", application date December 28, 2020, and invention name "Signal transceiver, feeding structure and antenna". Technical Field

[0002] The embodiments of the present application relate to the field of communication technology, and in particular to a signal transceiver device, a feeding structure, and an antenna. Background Art

[0003] Signal transceivers, such as combiners, are an important component of base station antennas. Their function is to combine two or more RF signals from different transmitters into one RF signal that is sent to the antenna's RF device, while preventing mutual interference between signals at each port.

[0004] The signal transceiver device usually includes multiple cavities, each of which is equipped with a filter circuit, such as Figure 1 、 Figure 2 、 Figure 3 As shown, the signal transceiver device further includes: a connector 01, which is used to connect the filter circuits in adjacent cavities.

[0005] However, the assembly tolerance of the connector is relatively large, which may easily affect the passive intermodulation (PIM) performance of the signal transceiver. Summary of the Invention

[0006] The embodiments of the present application provide a signal transceiver device, a feeding structure, and an antenna, which solve the problem of poor passive intermodulation performance of the signal transceiver device.

[0007] To achieve the above objectives, this application adopts the following technical solutions:

[0008] In a first aspect of the present application, a signal transceiver device is provided, comprising: a first cavity, on which a first interface is provided; a first filter circuit, which is arranged in the first cavity, the first filter circuit comprising a first end and a second end opposite to each other, the first end of the first filter circuit being connected to the first interface, and the first filter circuit being used to transmit a signal in a first frequency band; a second cavity, on which a second interface and a third interface are provided, the first filter circuit and the second filter circuit being parallel; a second filter circuit, which is arranged in the second cavity, the second filter circuit comprising a first end and a second end opposite to each other, the first end of the second filter circuit being connected to the first interface. The second interface is connected, and the second filter circuit is used to transmit signals in the second frequency band; the connecting component includes a first end and a second end relative to each other, and a third end located between the first end of the connecting component and the second end of the connecting component; wherein the first end of the connecting component is located in the first cavity, and the first end of the connecting component is connected to the second end of the first filter circuit, the third end of the connecting component is located in the second cavity, and the third end of the connecting component is connected to the second end of the second filter circuit, and the second end of the connecting component is connected to the third interface; wherein the connecting component adopts an integrated structure, and the connecting component is used to transmit signals in the first frequency band and the second frequency band. Therefore, the connecting component adopts an integrated structure, which reduces the assembly tolerance and improves the passive intermodulation performance of the signal transceiver device compared to the prior art in which multiple connection structures are used to connect filter circuits in different cavities.

[0009] In an optional implementation, the signal transceiver device further includes: a first printed circuit board (PCB), the first filter circuit being disposed on the first PCB, a first slot being provided within the first cavity, the first PCB being detachably connected to the first slot; and a second PCB, the second filter circuit being disposed on the second PCB, a second slot being provided within the second cavity, the second PCB being detachably connected to the second slot. This simplifies assembly and reduces difficulty.

[0010] In one optional implementation, the first cavity is provided with a first opening that matches the shape of the first PCB, allowing the first PCB to be engaged with the first slot through the first opening; the second cavity is provided with a second opening that matches the shape of the second PCB, allowing the second PCB to be engaged with the second slot through the second opening. Thus, the first and second cavities can be formed separately, and then the first PCB can be installed through the first opening, and the second PCB can be installed through the second opening, reducing assembly difficulty.

[0011] In one optional implementation, the first cavity is provided with a first welding port, located above the first end of the connecting component, for welding the first end of the connecting component to the second end of the first filter circuit through the first welding port; the second cavity is provided with a second welding port, located above the third end of the connecting component, for welding the third end of the connecting component to the second end of the second filter circuit through the second welding port. Thus, after the first and second cavities are formed separately, the connecting component and the first filter circuit can be welded through the first welding port, and the connecting component and the second filter circuit can be welded through the second welding port, thereby reducing assembly difficulty.

[0012] In an optional implementation, a third opening is provided in the first cavity or the second cavity, and the third opening is adapted to the shape of the connecting component so that the connecting component can enter the first cavity or the second cavity through the third opening. In this way, the first cavity and the second cavity can be formed separately, and then the connecting component can be installed through the third opening, reducing the difficulty of assembly.

[0013] In an optional implementation, the signal transceiver device further includes: a third cavity, wherein the third cavity is located between the first cavity and the second cavity, and a fourth interface is provided on the third cavity; a third filter circuit, wherein the third filter circuit is arranged in the third cavity, the third filter circuit includes a first end and a second end relative to each other, the first end of the third filter circuit is connected to the third interface, the second end of the third filter circuit is connected to the fourth end of the connecting component, and the third filter circuit is used to transmit signals in a third frequency band; wherein the fourth end of the connecting component is located between the first end of the connecting component and the third end of the connecting component, and the connecting component is also used to transmit signals in the third frequency band. Thus, the connecting component can simultaneously connect multiple filter circuits, can combine multiple signals into one, and can also divide one signal into multiple channels. At the same time, the connecting component adopts an integrated structure, which reduces assembly tolerance and improves the passive intermodulation performance of the signal transceiver device.

[0014] In one optional implementation, the signal transceiver device further includes: a third PCB, the third filter circuit being disposed on the third PCB; a third slot being disposed within the third cavity, the third PCB being detachably connected to the third slot; and a fourth opening being disposed within the third cavity, the fourth opening being adapted to the shape of the third PCB. Thus, the third PCB can be installed through the fourth opening after the third cavity is formed, thereby reducing assembly difficulty.

[0015] In one optional implementation, the third cavity is provided with a third welding opening, located above the fourth end of the connecting component, for welding the fourth end of the connecting component to the second end of the third filter circuit through the third welding opening. This allows the connecting component and the third filter circuit to be welded through the third welding opening after the third cavity is formed, reducing assembly difficulty.

[0016] In one optional implementation, the first, second, and fourth interfaces are connected to a signal input terminal, and the third interface is connected to a signal output terminal; or, the first, second, and fourth interfaces are connected to a signal output terminal, and the third interface is connected to a signal input terminal. Thus, the signal transceiver device can combine multiple signals into one signal through the connecting component, or split one signal into multiple signals, thus providing a wider range of applications.

[0017] In an optional implementation, the first filter circuit, the second filter circuit, and the third filter circuit each include: a main transmission line, and a plurality of open-circuit filter branches connected to the main transmission line, thereby enabling passband signals to be transmitted through the main transmission line.

[0018] In an optional implementation, the length of the open-circuit filter branch is Here, λ1 is the wavelength corresponding to the stopband signal frequency band. Therefore, the open filter branch can act as a resonator, generating resonance within the stopband frequency band. The stopband signal can only be transmitted back and forth on this open filter branch, thus filtering out the stopband signal.

[0019] In an optional implementation, the connecting component includes at least one impedance-transformed transmission line segment, the length of which is greater than Wherein, λ2 is the wavelength corresponding to the highest frequency in the input signal. Thus, the impedance-transformed transmission line segment can perform impedance matching for signals of different frequency bands, so that the connecting component can simultaneously transmit signals of different frequency bands.

[0020] A second aspect of the present application further provides a feed structure comprising: a phase shifter and the aforementioned signal transceiver device, wherein the phase shifter is electrically connected to the signal transceiver device. Thus, the feed structure employing the aforementioned signal transceiver device can reduce assembly tolerances and improve the passive intermodulation performance of the system.

[0021] A second aspect of the present application further provides an antenna comprising: at least one antenna array, the antenna array comprising: at least one radiating element, a reflector, and the feed structure described above; the radiating element being disposed above the reflector, and the feed structure being connected to the radiating element. Thus, the antenna employing the feed structure described above has the same effects as the aforementioned feed structure, and a detailed description thereof is omitted here.

[0022] In an optional implementation, the antenna further comprises: an antenna cover, wherein the radiation unit, the reflector plate and the feed structure are located in a cavity enclosed by the antenna cover. Thus, the antenna cover can reduce the impact of the external environment on the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of a signal transceiver device;

[0024] Figure 2 for Figure 1 Schematic diagram of the disassembled structure of the signal transceiver;

[0025] Figure 3 It is a structural schematic diagram of a connecting piece;

[0026] Figure 4 It is a structural diagram of another signal transceiver device;

[0027] Figure 5 for Figure 4 Schematic diagram of the disassembled structure of the signal transceiver;

[0028] Figure 6 A schematic structural diagram of a signal transceiver device provided in an embodiment of the present application;

[0029] Figure 7 for Figure 6 Schematic diagram of the disassembled structure of the signal transceiver;

[0030] Figure 8 A schematic structural diagram of another signal transceiver device provided in an embodiment of the present application;

[0031] Figure 9 for Figure 8 Schematic diagram of the disassembled structure of the signal transceiver;

[0032] Figure 10 for Figure 8 A top view of the signal transceiver;

[0033] Figure 11 for Figure 8 Schematic diagram of the structure of the connecting parts;

[0034] Figure 12 A schematic structural diagram of a feeding structure provided in an embodiment of the present application;

[0035] Figure 13 A schematic diagram of the disassembled structure of a feeding structure provided in an embodiment of the present application;

[0036] Figure 14 for Figure 13 A top view of the mid-feed structure;

[0037] Figure 15 for Figure 13 Top view of the mid-phase shifter;

[0038] Figure 16 for Figure 13 A top view of the signal transceiver;

[0039] Figure 17 for Figure 13 A cross-sectional view of the mid-feed structure;

[0040] Figure 18 A schematic diagram of the disassembled structure of another feeding structure provided in an embodiment of the present application;

[0041] Figure 19 for Figure 18 A top view of the mid-feed structure;

[0042] Figure 20 for Figure 18 A cross-sectional view of the mid-feed structure;

[0043] Figure 21 A schematic diagram of the structure of an antenna provided in an embodiment of the present application;

[0044] Figure 22 A schematic structural diagram of a base station antenna feed system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0046] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0047] In addition, in this application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the components in the drawings.

[0048] The following explains the terms that may appear in the embodiments of the present application.

[0049] Insertion loss: The loss of load power caused by the insertion of a component or device somewhere in the transmission system. It is expressed as the ratio of the power received by the load before the component or device is inserted to the power received by the same load after insertion in decibels.

[0050] Passive intermodulation (PIM) refers to the generation of spurious signals when two or more frequencies are mixed together in a nonlinear device.

[0051] The embodiment of the present application provides a signal transceiver device, which includes two or more cavities. Figure 4 As shown, the signal transceiver device 101 includes: a first cavity 102 , a second cavity 104 and a third cavity 103 .

[0052] A first filter circuit 105 is disposed in the first cavity 102 , a second filter circuit 107 is disposed in the second cavity 104 , and a third filter circuit 106 is disposed in the third cavity 103 .

[0053] The signal transceiver 101 further includes a connecting component 108 , wherein the connecting component 108 includes a first end and a second end opposite to each other, and a third end and a fourth end located between the first end of the connecting component 108 and the second end of the connecting component 108 .

[0054] The first end of the connecting component 108 is located in the first cavity 102, and the first end of the connecting component 108 is connected to the second end of the first filtering circuit 105. The third end of the connecting component 108 is located in the second cavity 104, and the third end of the connecting component 108 is connected to the second end of the second filtering circuit 107. The fourth end of the connecting component 108 is located in the third cavity 106, and the fourth end of the connecting component 108 is connected to the second end of the third filtering circuit 106. The second end of the connecting component 108 is connected to the interface on the second cavity.

[0055] In some embodiments of the present application, the connecting component 108, the first filter circuit 105, the second filter circuit 107 and the third filter circuit 106 are integrally formed, and the connecting component 108, the first filter circuit 105, the second filter circuit 107 and the third filter circuit 106 are all arranged on a printed circuit board (PCB), and the connecting component 108 crosses the three inner cavities.

[0056] like Figure 5As shown, the signal transceiver 101 includes a base 001 and a cover 002. During assembly, the connecting component 108, the first filter circuit 105, the second filter circuit 107, and the third filter circuit 106 are first assembled onto a PCB, which is then mounted on the base 001. Finally, the cover 002 is welded to the base 001.

[0057] However, the above assembly method easily affects the passive intermodulation (PIM) performance of the signal transceiver 101 , and has high requirements on the assembly process, which increases the difficulty of assembly and makes maintenance difficult.

[0058] To this end, an embodiment of the present application provides an improved signal transceiver device 101.

[0059] In some embodiments of the present application, Figure 6 、 Figure 7 As shown, the signal transceiver device 101 includes: a first cavity 102 and a second cavity 104 .

[0060] A first filter circuit 105 is disposed in the first cavity 102 , and a first interface 1021 is disposed on the first cavity 102 .

[0061] The first filter circuit 105 includes a first end and a second end opposite to each other. The first end of the first filter circuit 105 is connected to the first interface 1021 . The first filter circuit 105 transmits signals in a first frequency band.

[0062] A second filter circuit 107 is disposed in the second cavity 104 , and a second interface 1041 is disposed on the second cavity 104 . A third interface 1024 is disposed on the first cavity 102 . The first filter circuit 105 and the second filter circuit 107 are parallel.

[0063] It should be noted that the above-mentioned parallelism is not parallelism in the strict mathematical sense, and errors may exist. If the error is less than a preset threshold, it is considered to be parallel.

[0064] It should be noted that, in some other embodiments of the present application, the third interface 1024 may be provided on the second cavity 104 , for example.

[0065] The second filtering circuit 107 includes a first end and a second end opposite to each other. The first end of the second filtering circuit 107 is connected to the second interface 1041 . The second filtering circuit 107 is configured to transmit signals in a second frequency band.

[0066] The signal transceiver 101 further includes a connecting component 108 , wherein the connecting component 108 includes a first end and a second end opposite to each other, and a third end located between the first end of the connecting component 108 and the second end of the connecting component 108 .

[0067] The first end of the connecting component 108 is located in the first cavity 102, and the first end of the connecting component 108 is connected to the second end of the first filtering circuit 105. The third end of the connecting component 108 is located in the second cavity 104, and the third end of the connecting component 108 is connected to the second end of the second filtering circuit 107. The second end of the connecting component 108 is connected to the third interface 1024.

[0068] The connecting component 108 is used to transmit signals in the first frequency band and the second frequency band.

[0069] When in use, the connecting component 108 can combine multiple signals into one output, or divide one signal into multiple outputs.

[0070] In some embodiments, the first interface 1021 and the second interface 1041 are used to connect to a signal input end, and the third interface 1024 is used to connect to a signal output end.

[0071] When working, the first interface 1021 can be used to receive signals of the first frequency band and pass the received signals of the first frequency band to the first filtering circuit 105. The first filtering circuit 105 can pass the signals to the connecting component 108. The second interface 1041 can be used to receive signals of the second frequency band and pass the received signals of the second frequency band to the second filtering circuit 107. Then the second filtering circuit 107 passes the signals to the connecting component 108.

[0072] In this embodiment, the connecting component 108 may combine the signal of the first frequency band and the signal of the second frequency band into one channel, and transmit the combined signal to the third interface 1024 , and the third interface 1024 outputs the combined signal.

[0073] In other embodiments, the first interface 1021 and the second interface 1041 are used to connect to a signal output end, and the third interface 1024 is used to connect to a signal input end.

[0074] When in operation, the third interface 1024 may be used to receive a signal in the first frequency band and transmit the received signal in the first frequency band to the connecting component 108 .

[0075] In this embodiment, the connecting component 108 can split one signal into two paths, and pass one path to the first filtering circuit 105, and pass the other path to the second filtering circuit 107. The first filtering circuit 105 can pass the signal to the first interface 1021, and the second filtering circuit 107 can pass the signal to the second interface 1041, so that the split signals are output by the first interface 1021 and the second interface 1041 respectively.

[0076] Among them, the connecting component 108 adopts an integrated structure, a part of the connecting component 108 is located in the first cavity 102, and the other part is located in the second cavity 104, and is respectively connected to the first filtering circuit 105, the second filtering circuit 107 and the third interface 1024. Compared with the prior art in which the filtering circuits and the second interface 1041 in different cavities are connected through multiple connection structures, the assembly tolerance is reduced and the passive intermodulation performance of the signal transceiver 101 is improved.

[0077] The embodiment of the present application does not limit the assembly method of the connecting component 108 and the first filter circuit 105 and the second filter circuit 107. In some embodiments, Figure 3 As shown, the signal transceiver 101 further includes: a first PCB 1050 and a second PCB 1070 , the first filter circuit 105 is arranged on the first PCB 1050 , a first card slot 1020 is provided in the first cavity 102 , and the first PCB 1050 is detachably connected to the first card slot 1020 .

[0078] The first cavity 102 is provided with a first opening 1022 , for example. The first opening 1022 matches the shape of the first PCB 1050 , so that the first PCB 1050 can be engaged with the first slot 1020 through the first opening 1022 .

[0079] When assembling the first PCB 1050 , the first PCB 1050 provided with the first filter circuit 105 can be inserted into the first cavity 102 through the first opening 1022 and engaged with the first engaging slot 1020 .

[0080] The second filter circuit 107 is disposed on the second PCB 1070 . A second slot 1040 is disposed in the second cavity 104 . The second PCB 1070 and the second slot 1040 are detachably connected.

[0081] The second cavity 104 is provided with a second opening 1042 , for example. The second opening 1042 matches the shape of the second PCB 1070 , so that the second PCB 1070 can be engaged with the second slot 1040 through the second opening 1042 .

[0082] When assembling the second PCB 1070 , the second PCB 1070 provided with the second filter circuit 107 can be inserted into the first cavity 102 through the second opening 1042 and engaged with the second slot 1040 .

[0083] In addition, a third opening 1022 is provided on the first cavity 102 . The third opening 1022 matches the shape of the connecting component 108 , so that the connecting component 108 can enter the first cavity 102 and the second cavity 104 through the third opening 1022 .

[0084] In other embodiments of the present application, the third opening 1022 may also be provided on the second cavity 104 .

[0085] In some embodiments, a third slot (not shown in the figure) adapted to the connecting component 108 is further provided in the first cavity 102 and the second cavity 104 .

[0086] When assembling the connecting component 108 , the connecting component 108 can be inserted into the first cavity 102 and the second cavity 104 through the third opening 1022 and engaged with the third engaging slot.

[0087] In some other embodiments, a mounting seat (not shown in the figures) is further provided in the first cavity 102 and the second cavity 104 , for example, and the mounting seat is used to install the connecting component 108 .

[0088] When assembling the connecting component 108 , the connecting component 108 can be inserted into the first cavity 102 and the second cavity 104 through the third opening 1022 and fixedly connected to the mounting seat.

[0089] The embodiment of the present application does not limit the connection method of the connecting component 108 and the first filter circuit 105 and the second filter circuit 107. In some embodiments of the present application, the connecting component 108 and the first filter circuit 105, the connecting component 108 and the second filter circuit 107 are all welded.

[0090] The first cavity 102 is provided with a first welding port 1023 , for example. The first welding port 1023 is located above the first end of the connecting component 108 , so that the first end of the connecting component 108 and the second end of the first filter circuit 105 can be welded through the first welding port 1023 .

[0091] When welding the connecting component 108 and the first filter circuit 105, the first end of the connecting component 108 and the second end of the first filter circuit 105 can be heated to a molten state through the first welding port 1023, so that the first end of the connecting component 108 and the second end of the first filter circuit 105 are connected as one after cooling.

[0092] A second welding port 1043 is defined on the second cavity 104 . The second welding port 1043 is located above the third end of the connecting component 108 , so that the third end of the connecting component 108 and the second end of the second filter circuit 107 can be welded through the second welding port 1043 .

[0093] When welding the connecting component 108 and the second filter circuit 107, the third end of the connecting component 108 and the second end of the second filter circuit 107 can be heated to a molten state through the second welding port 1043, so that the third end of the connecting component 108 and the second end of the second filter circuit 107 are connected as one after cooling.

[0094] In other embodiments of the present application, the signal transceiver device 101 has three cavities. Figure 8 、 Figure 9 As shown, the signal transceiver device 101 includes: a first cavity 102, a second cavity 104, and a third cavity 103. The structures of the first cavity 102 and the second cavity 104, and the connection between the first filter circuit 105, the second filter circuit 107, and the connecting component 108 can be referred to the above embodiment and will not be repeated here.

[0095] The third cavity 103 is located between the first cavity 102 and the second cavity 104 , and a fourth interface 1031 is provided on the third cavity 103 .

[0096] A third filtering circuit 106 is provided in the third cavity 103. The third filtering circuit 106 includes a first end and a second end relative to each other. The first end of the third filtering circuit 106 is connected to the third interface 1024, and the second end of the third filtering circuit 106 is connected to the fourth end of the connecting component 108. The third filtering circuit 106 is used to transmit signals in the third frequency band.

[0097] The fourth end of the connecting component 108 is located between the first end of the connecting component 108 and the third end of the connecting component 108 , and the connecting component 108 is further used to transmit the signal of the third frequency band.

[0098] The signal transceiver 101 further includes a third PCB 1060 , on which the third filter circuit 106 is disposed. A third slot 1030 is disposed in the third cavity 103 , and the third PCB 1060 is detachably connected to the third slot 1030 .

[0099] The third cavity 103 is provided with a third opening 1022 , for example. The third opening 1022 matches the shape of the third PCB 1060 .

[0100] When assembling the third PCB 1060 , the third PCB 1060 provided with the third filter circuit 106 can be inserted into the third cavity 103 through the third opening 1022 and engaged with the third engaging slot 1030 .

[0101] In addition, a third welding port 1033 is provided on the third cavity 103 . The third welding port 1033 is located above the fourth end of the connecting component 108 , so that the fourth end of the connecting component 108 and the second end of the third filter circuit 106 can be welded through the third welding port 1033 .

[0102] When welding the connecting component 108 and the third filter circuit 106, the fourth end of the connecting component 108 and the second end of the third filter circuit 106 can be heated to a molten state through the third welding port 1033, so that the fourth end of the connecting component 108 and the second end of the third filter circuit 106 are connected as one after cooling.

[0103] In some embodiments of the present application, the first interface 1021 , the second interface 1041 and the fourth interface 1031 are used to connect to a signal input end, and the third interface 1024 is used to connect to a signal output end.

[0104] When working, the first interface 1021 can be used to receive signals in the first frequency band and pass the received signals in the first frequency band to the first filtering circuit 105. The first filtering circuit 105 can pass the signal to the connecting component 108. The second interface 1041 can be used to receive signals in the second frequency band and pass the received signals in the second frequency band to the second filtering circuit 107. The fourth interface 1031 can be used to receive signals in the third frequency band and pass the received signals in the third frequency band to the second filtering circuit 107. The second filtering circuit 107 then passes the signal to the connecting component 108.

[0105] In this embodiment, the connecting component 108 may combine the signal of the first frequency band, the signal of the second frequency band, and the signal of the third frequency band into one channel, and transmit the combined signal to the third interface 1024 , and the third interface 1024 outputs the combined signal.

[0106] In other embodiments of the present application, the first interface 1021 , the second interface 1041 , and the fourth interface 1031 are used to connect to a signal output terminal, and the third interface 1024 is used to connect to a signal input terminal.

[0107] During operation, the third interface 1024 can be used to receive signals in the first frequency band and transmit the received signals in the first frequency band to the connection component 108. The connection component 108 can split one signal into three paths, and transmit one path to the first filter circuit 105, one path to the second filter circuit 107, and the third path to the third filter circuit 106. The first filter circuit 105 can transmit the signal to the first interface 1021, the second filter circuit 107 can transmit the signal to the second interface 1041, and the third filter circuit 106 can transmit the signal to the fourth interface 1031, so that the split signals are output by the first interface 1021 and the second interface 1041 respectively.

[0108] The above description is based on the case where the signal transceiver 101 includes a 2-frequency division and a 3-frequency division. In other embodiments of the present application, the signal transceiver 101 may include an N-frequency division, where N is a positive integer greater than 1. The N-frequency division signal transceiver 101 can refer to the structure of the 2-frequency division and the 3-frequency division, and will not be repeated here.

[0109] The embodiment of the present application does not limit the specific structures of the first filter circuit 105, the second filter circuit 107 and the third filter circuit 106. Figure 10 As shown, the first filter circuit 105 , the second filter circuit 107 and the third filter circuit 106 each include, for example: a plurality of open-circuit filter branches.

[0110] The first filtering circuit 105 includes a first main transmission line 1055 , a first filtering branch 1051 , a second filtering branch 1052 , a third filtering branch 1053 and a fourth filtering branch 1054 .

[0111] One end of the first main transmission line 1055 is connected to the first interface 1021, and the other end is connected to the connecting component 108. The first main transmission line 1055 is used to transmit signals in the first frequency band, for example.

[0112] One end of the first filter branch 1051, the second filter branch 1052, the third filter branch 1053 and the fourth filter branch 1054 is connected to the first main transmission line 1055, and the other end is in an open-circuit state. Among them, the first filter branch 1051, the second filter branch 1052, the third filter branch 1053 and the fourth filter branch 1054 can be used to transmit stopband signals. Since the filter branch adopts an open-circuit structure, the stopband signal can only be transmitted back and forth on the first filter branch 1051, the second filter branch 1052, the third filter branch 1053 and the fourth filter branch 1054, thereby filtering out the stopband signal on the main transmission line.

[0113] The lengths of the first filter branch 1051 , the second filter branch 1052 , the third filter branch 1053 and the fourth filter branch 1054 are, for example, Among them, λ1 is the wavelength corresponding to the stopband signal frequency band in the first frequency band, so that the first filter branch 1051, the second filter branch 1052, the third filter branch 1053 and the fourth filter branch 1054 can act as resonators to generate resonance within the stopband frequency band. The stopband signal can only be transmitted back and forth on the open filter branch, and the stopband signal can be filtered out.

[0114] The first filter branch 1051, the second filter branch 1052, the third filter branch 1053, and the fourth filter branch 1054 are used to filter out stopband signals. It should be noted that, in this embodiment, the stopband signals refer to signals other than the first frequency band, for example, signals in the second frequency band and signals in the third frequency band.

[0115] The second filtering circuit 107 includes a second main transmission line 1074 , a fifth filtering branch 1071 , a sixth filtering branch 1072 , and a seventh filtering branch 1073 .

[0116] One end of the second main transmission line 1074 is connected to the second interface 1041, and the other end is connected to the connection component 108. The second main transmission line 1074 is used, for example, to transmit a passband signal of the second frequency band.

[0117] One end of the fifth filter branch 1071, the sixth filter branch 1072, and the seventh filter branch 1073 is connected to the second main transmission line 1074, and the other end is in an open circuit state. Among them, the fifth filter branch 1071, the sixth filter branch 1072, and the seventh filter branch 1073 can be used to transmit stopband signals. Because the fifth filter branch 1071, the sixth filter branch 1072, and the seventh filter branch 1073 adopt an open circuit structure, the stopband signal can only be transmitted back and forth on the filter branch, thereby filtering out the stopband signal on the main transmission line.

[0118] The lengths of the fifth filter branch 1071, the sixth filter branch 1072, and the seventh filter branch 1073 are, for example, Wherein, λ2 is the wavelength corresponding to the stopband signal frequency band in the second frequency band, so that the fifth filter branch 1071, the sixth filter branch 1072, and the seventh filter branch 1073 can act as resonators, generating resonance within the stopband frequency band. The stopband signal can only be transmitted back and forth on the open filter branch, thereby filtering out the stopband signal. It should be noted that in this embodiment, the stopband signal refers to other signals outside the second frequency band, for example, signals in the first frequency band and signals in the third frequency band.

[0119] The third filtering circuit 106 includes a third main transmission line 1064 , an eighth filtering branch 1061 , a ninth filtering branch 1062 , and a tenth filtering branch 1063 .

[0120] One end of the third main transmission line 1064 is connected to the fourth interface 1031, and the other end is connected to the connection component 108. The third main transmission line 1064 is used, for example, to transmit a passband signal in a third frequency band.

[0121] One end of the eighth filter branch 1061, the ninth filter branch 1062, and the tenth filter branch 1063 is connected to the third main transmission line 1064, and the other end is in an open circuit state. Among them, the eighth filter branch 1061, the ninth filter branch 1062, and the tenth filter branch 1063 can be used to transmit stopband signals. Because the filter branches adopt an open circuit structure, the stopband signals can only be transmitted back and forth on the eighth filter branch 1061, the ninth filter branch 1062, and the tenth filter branch 1063, thereby filtering out the stopband signals on the third main transmission line 1064.

[0122] The lengths of the eighth filtering branch 1061, the ninth filtering branch 1062, and the tenth filtering branch 1063 are, for example, Wherein, λ3 is the wavelength corresponding to the stopband signal frequency band in the third frequency band. This allows the eighth filter branch 1061, the ninth filter branch 1062, and the tenth filter branch 1063 to act as resonators, generating resonance within the stopband frequency band. Stopband signals can only be transmitted back and forth on these open-circuit filter branches, thereby filtering out the stopband signals. It should be noted that in this embodiment, the stopband signals refer to signals other than the third frequency band, for example, signals in the first frequency band and signals in the second frequency band.

[0123] The first main transmission line 1055, the second main transmission line 1074, the third main transmission line 1064, the first filter branch 1051, the second filter branch 1052, the third filter branch 1053, the fourth filter branch 1054, the fifth filter branch 1071, the sixth filter branch 1072, the seventh filter branch 1073, the eighth filter branch 1061, the ninth filter branch 1062, and the tenth filter branch 1063 can adopt a bending structure, which can reduce the spatial size of the filter circuit and is conducive to the miniaturization of the equipment.

[0124] like Figure 11 As shown, the connecting component 108 includes at least one impedance-transformed transmission line segment, and the length of the impedance-transformed transmission line segment is L, wherein L is greater than Where λ0 is the wavelength corresponding to the highest frequency in the input signal.

[0125] Figure 12 A schematic diagram of a feeding structure provided in this application is shown in FIG. Figure 12As shown, the feeding structure includes: a phase shifter 200 and the signal transceiver device 101 as described above, and the phase shifter 200 is electrically connected to the signal transceiver device 101.

[0126] Example 1:

[0127] like Figure 13 、 Figure 14 、 Figure 15 、 Figure 16 、 Figure 17 As shown, the feeding structure includes: a signal transceiver module 100 and a phase shifter 200 stacked along the Z direction.

[0128] Among them, such as Figure 16 、 Figure 17 As shown, the signal transceiver module 100 includes: a first cavity 1011, a second cavity 1012 and a third cavity 1013 arranged along the Y direction, and five cavities are arranged side by side along the X direction in the first cavity 1011, the second cavity 1012 and the third cavity 1013. Figure 9 、 Figure 10 The signal transceiver device includes: a first signal transceiver device 01 , a second signal transceiver device 02 , a third signal transceiver device 03 , a fourth signal transceiver device 04 , and a fifth signal transceiver device 05 .

[0129] The configuration of each signal transceiver can refer to the above Figure 8 and Figure 9 The relevant description will not be repeated here.

[0130] like Figure 15 As shown, the phase shifter 200 includes a fourth cavity 2001, a fifth cavity 2002, and a sixth cavity 2003, each of which includes a phase shifting structure. The fourth cavity 2001 is opposite the first cavity 1011, the fifth cavity 2002 is opposite the second cavity 1012, and the sixth cavity 2003 is opposite the third cavity 1013. The phase shifter is used to adjust the phase of a signal.

[0131] The feeding structure further includes an input port Pin and a first output port Pout1 , a second output port Pout2 , a third output port Pout3 and a fourth output port Pout4 .

[0132] The feeding structure further includes a conductive plug 205 , and the five signal transceiver devices are electrically connected to the phase shift structure via the conductive plug 205 .

[0133] The connection structure of the fifth signal transceiver 05 is connected to the input port. The fifth signal transceiver 05 includes three filter circuits. The fifth signal transceiver 05 is used to divide the received signal into three paths.

[0134] Each filter circuit of the fifth signal transceiver device 05 is connected to an input port of a phase shifter via a conductive plug.

[0135] The four output ports of the phase shifter are respectively connected to the filtering circuits of the first signal transceiver device 01 , the second signal transceiver device 02 , the third signal transceiver device 03 , and the fourth signal transceiver device 04 through conductive plugs.

[0136] During use, the input port Pin receives the signals of the input frequency band 1, frequency band 2 and frequency band 3, and divides them into three paths after passing through the third signal transceiver device 03. The three signals are respectively transmitted to the input port of its filter circuit, and then respectively input to the input port of each phase shifting structure through the conductive plug 205. The corresponding power division and phase shift are achieved through each phase shifting structure, and then output from the four output ports of the phase shifter 200 and input to the input end of the filter circuit of the first signal transceiver device 01, the second signal transceiver device 02, the third signal transceiver device 03, and the fourth signal transceiver device 04 through the plug PCB, and finally output at the output ports (first output port Pout1, second output port Pout2, third output port Pout3 and fourth output port Pout4) of the first signal transceiver device 101, the second signal transceiver device 101, the third signal transceiver device 101, and the fourth signal transceiver device 101.

[0137] In addition, the feeding structure further includes: a first pull rod 2011 , a second pull rod 2012 , a third pull rod 2013 , a first sliding medium 202 , a second sliding structure 203 , and a third sliding medium 204 .

[0138] The first pull rod 2011 is connected to the first sliding medium 202 . When the first pull rod 2011 is pushed or pulled, the first sliding medium 202 slides relative to the first cavity 1011 .

[0139] The second pull rod 2012 is connected to the second sliding medium 203 . When the second pull rod 2012 is pushed or pulled, the second sliding medium 203 slides relative to the second cavity 1012 .

[0140] The third pull rod 2013 is connected to the third sliding medium 204 . When the third pull rod 2013 is pushed or pulled, the third sliding medium 204 slides relative to the third cavity 1013 .

[0141] Among them, the four output ports (the first output port Pout1, the second output port Pout2, the third output port Pout3 and the fourth output port Pout4) are respectively connected to the radiating elements of the array antenna. When the first pull rod 2011, the second pull rod 2012, and the third pull rod 2013 respectively drive the first sliding medium 202, the second sliding structure 203, and the third sliding medium 204 to move a certain distance, the signals of frequency band 1, frequency band 2, and frequency band 3 input by Pin are adjusted by the three phase shifters 200 to feed the radiating elements with the required signal current strength and phase in frequency band 1, frequency band 2, and frequency band 3, respectively, thereby changing the direction of the array antenna radiation pattern in frequency band 1, frequency band 2, and frequency band 3, respectively.

[0142] Example 2:

[0143] The embodiment of the present application also provides a feeding structure, such as Figure 18 、 Figure 19 、 Figure 20 As shown, the feeding structure includes: a signal transceiver module 100 and a phase shifter 200 stacked along the Z direction. The signal transceiver module 100 includes: two cavities arranged along the Y direction, and five cavities are arranged side by side along the X direction in the two cavities. Figure 6 、 Figure 7 The signal transceiver device 101 is shown.

[0144] The phase shifter also includes two cavities. The specific structure and working process of the signal transceiver 100 and the phase shifter 200 can be referred to Example 1, and will not be repeated here.

[0145] The embodiment of the present application also provides an antenna 01, such as Figure 21 As shown, the antenna 01 includes: at least one antenna array 004, and the antenna array 004 includes: at least one radiation unit 0041, a reflection plate 0042 and the feeding structure 010 as described above.

[0146] The radiation unit 0041 is a unit that constitutes the basic structure of the antenna array and can effectively radiate or receive radio waves. The frequency of each radiation unit 0041 can be the same or different. The radiation unit 0041 is arranged above the reflector 0042.

[0147] Reflector 0042 (also known as base plate, antenna panel, or metal reflector) improves antenna signal reception sensitivity by focusing the antenna signal at the receiving point. This not only significantly enhances the antenna's receiving and transmitting capabilities but also blocks and shields the received signal from interference from other radio waves coming from behind (in the opposite direction).

[0148] The feeding structure 010 is connected to the radiating unit 0041 , and the antenna array 004 can receive or transmit radio frequency signals through the respective feeding structures 010 .

[0149] Feed structure 010 can feed signals to radiating element 0041 at a specific amplitude and phase, or transmit received wireless signals to the base station's signal processing unit at a specific amplitude and phase. Feed structure 010 is typically composed of a controlled impedance transmission line and typically includes a phase shifter 200. In some cases, it may also include components such as a combiner and a filter.

[0150] The feeding structure 010 can realize different radiation beam directions through the transmission components, or be connected to the transmission network (or calibration network) 003 to obtain the calibration signal required by the system.

[0151] The antenna 01 further includes: an antenna cover 006 , and the radiation unit 0041 , the reflection plate 0042 and the feeding structure 010 are located in a cavity enclosed by the antenna cover 006 .

[0152] The radome 006 is a structural component that can protect the antenna 01 from the influence of the external environment. It has good electromagnetic wave penetration characteristics in terms of electrical performance and can withstand the effects of harsh external environments in terms of mechanical performance.

[0153] The embodiment of the present application also provides a base station antenna feed system, such as Figure 22 As shown, the base station antenna feed system includes the antenna 01 described above. It also includes a feeder line 05, a mast 02, and an antenna adjustment bracket 03. Feeder line 05 is connected to antenna 01, for example, via an antenna connector 005. A connector seal 04 is provided on the outside of antenna connector 005. Connector seal 04 can be made of either insulating sealing tape or PVC insulating tape.

[0154] The above is only a specific embodiment of the present application, but the scope of protection of this application is not limited to this. Any changes or substitutions within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A signal transceiver device, characterized in that: include: a first cavity, wherein a first interface is provided on the first cavity; a first filtering circuit, the first filtering circuit being in the first cavity, the first filtering circuit comprising a first end and a second end opposite to each other, the first end of the first filtering circuit being connected to the first interface; a second cavity, wherein a second interface and a third interface are provided on the second cavity; a second filtering circuit, the second filtering circuit being in the second cavity, the first filtering circuit and the second filtering circuit being parallel, the second filtering circuit comprising a first end and a second end opposite to each other, the first end of the second filtering circuit being connected to the second interface; a connecting component, the connecting component comprising a first end and a second end opposite to each other, and a third end located between the first end and the second end of the connecting component; wherein the first end of the connecting component is located in the first cavity and connected to the second end of the first filtering circuit, the third end of the connecting component is located in the second cavity and connected to the second end of the second filtering circuit, and the second end of the connecting component is connected to the third interface; Wherein, the connecting component adopts an integrated structure.

2. The signal transceiver device according to claim 1, wherein: Also includes: a first printed circuit board (PCB), wherein the first filter circuit is on the first PCB, a first slot is provided in the first cavity, and the first PCB is detachably connected to the first slot; The second PCB is provided with the second filter circuit, and a second slot is provided in the second cavity. The second PCB is detachably connected to the second slot.

3. The signal transceiver device according to claim 2, wherein: The first cavity is provided with a first opening, and the first opening is adapted to the shape of the first PCB, so that the first PCB can be engaged with the first card slot through the first opening; A second opening is provided on the second cavity, and the second opening is adapted to the shape of the second PCB, so that the second PCB can be engaged with the second slot through the second opening.

4. The signal transceiver device according to any one of claims 1 to 3, characterized in that: A first welding port is provided on the first cavity, and the first welding port is located above the first end of the connecting component, so as to weld the first end of the connecting component and the second end of the first filter circuit through the first welding port; A second welding port is provided on the second cavity, and the second welding port is located above the third end of the connecting component, so that the third end of the connecting component and the second end of the second filter circuit are welded through the second welding port.

5. The signal transceiver device according to any one of claims 1 to 4, characterized in that: A third opening is provided on the first cavity or the second cavity, and the third opening is adapted to the shape of the connecting component so that the connecting component can enter the first cavity and the second cavity through the third opening.

6. The signal transceiver device according to any one of claims 1 to 5, characterized in that: Also includes: A third cavity, wherein the third cavity is located between the first cavity and the second cavity, and a fourth interface is provided on the third cavity; a third filtering circuit, the third filtering circuit being in the third cavity, the third filtering circuit comprising a first end and a second end opposite to each other, the first end of the third filtering circuit being connected to the third interface, the second end of the third filtering circuit being connected to the fourth end of the connecting component, and the third filtering circuit being configured to transmit signals in a third frequency band; The fourth end of the connecting component is located between the first end of the connecting component and the third end of the connecting component, and the connecting component is further used to transmit signals in the third frequency band.

7. The signal transceiver device according to claim 6, characterized in that: Also includes: a third PCB, the connecting component being on the third PCB, a third slot being provided in the third cavity, and the third PCB being detachably connected to the third slot; The third cavity is provided with a third opening, and the third opening is adapted to the shape of the third PCB.

8. The signal transceiver device according to claim 6 or 7, characterized in that: The third cavity is provided with a third welding port, and the third welding port is located above the fourth end of the connecting component, so that the fourth end of the connecting component and the second end of the third filter circuit are welded through the third welding port.

9. The signal transceiver device according to any one of claims 6 to 8, characterized in that: The first interface, the second interface and the fourth interface are used to connect to the signal input end, and the third interface is used to connect to the signal output end; Alternatively, the first interface, the second interface and the fourth interface are used to connect to the signal output end, and the third interface is used to connect to the signal input end.

10. The signal transceiver device according to any one of claims 6 to 9, characterized in that: The first filter circuit, the second filter circuit and the third filter circuit each include: a plurality of open-circuit filter branches.

11. The signal transceiver device according to claim 10, characterized in that: The length of the open-circuit filter branch is Where λ1 is the wavelength corresponding to the stopband signal frequency band.

12. The signal transceiver device according to any one of claims 1 to 11, characterized in that: The connecting component includes at least one impedance-transformed transmission line segment, the length of which is greater than Where λ2 is the wavelength corresponding to the highest frequency in the input signal.

13. The signal transceiver device according to any one of claims 1 to 12, characterized in that: The first filtering circuit is used to transmit signals in a first frequency band, the second filtering circuit is used to transmit signals in a second frequency band, and the connecting component is used to transmit signals in the first frequency band and the second frequency band.

14. A feeding structure, characterized in that: include: A phase shifter, and a signal transceiver device according to any one of claims 1 to 13, wherein the phase shifter is electrically connected to the signal transceiver device.

15. An antenna, characterized in that: include: At least one antenna array, the antenna array comprising: at least one radiating element, a reflector, and the feed structure according to claim 14; The radiation unit is above the reflection plate, and the feeding structure is connected to the radiation unit.

16. The antenna according to claim 15, characterized in that The antenna further includes: an antenna cover, and the radiation unit, the reflection plate and the feeding structure are located in a cavity enclosed by the antenna cover.

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