Integrated structure of combiner and phase shifter and base station antenna

Abstract

The present invention is applicable to the field of antenna technology, and provides an integrated structure of a combiner and a phase shifter and a base station antenna. The integrated structure of the combiner and the phase shifter includes a fixed plate, a first circuit board and a fourth circuit board; the first circuit board is arranged on the top surface of the fixed plate and operates in the first frequency band; the fourth circuit board is arranged on the bottom surface of the fixed plate and operates in the second frequency band; the first circuit board includes a first phase shifting network and at least one first combining line, and each output port of the first phase shifting network is electrically connected to each first combining line through a connecting line; the fourth circuit board is similar; a first combining line is electrically connected to a fourth combining line of a fourth circuit board to form a combiner, and each combiner is electrically connected to an output port. In this way, the present invention integrates the combiner and the phase shifter on the same microstrip network, which has a compact structure, saves a large number of connecting cables, and reduces costs.

Description

Technical Field

[0001] The present invention relates to the field of antenna technology, and in particular to an integrated structure of a combiner and a phase shifter and a base station antenna. Background Art

[0002] With the continuous deepening of 5G construction and the increasing shortage of site and antenna resources, operators are increasingly demanding multi-standard and multi-band antennas. Multi-frequency antennas can not only greatly save antenna resources, but also reduce the construction and operation costs of base stations. However, in the prior art, due to the separate settings of the phase shifters and combiners inside the antenna, as the frequency bands increase, the number of phase shifters, combiners and connecting cables inside the antenna also increases, making the antenna layout difficult and the cost greatly increased. At the same time, there are many cable welding points, high intermodulation risks, and production difficulties.

[0003] In summary, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0004] In view of the above-mentioned defects, the purpose of the present invention is to provide an integrated structure of a combiner and a phase shifter and a base station antenna, which integrates the combiner and the phase shifter on the same microstrip network, has a compact structure, saves a large number of connecting cables, and reduces costs.

[0005] In order to achieve the above-mentioned object, the present invention provides an integrated structure of a combiner and a phase shifter, comprising a fixing board, a first circuit board and a fourth circuit board;

[0006] The first circuit board is arranged on the top surface of the fixing plate, and the first circuit board operates in a first frequency band;

[0007] The fourth circuit board is arranged on the bottom surface of the fixing plate, and the fourth circuit board operates in the second frequency band;

[0008] The first circuit board comprises a first phase-shifting network and at least one first combining line, and each output port of the first phase-shifting network is electrically connected to each first combining line through a connecting line;

[0009] The fourth circuit board comprises a fourth phase-shifting network and at least one fourth combining line, and each output port of the fourth phase-shifting network is electrically connected to each of the fourth combining lines through a connecting line;

[0010] One of the first combined lines is electrically connected to one of the fourth combined lines to form a combiner, and each of the combiners is electrically connected to a corresponding first output port.

[0011] According to the integrated structure of the combiner and the phase shifter, the first combined line and the fourth combined line are electrically connected via a plug board;

[0012] The plug board is a PCB board, and circuits are arranged on both sides of the plug board, and metal vias are provided; the plug board is welded to the first combined circuit and the fourth combined circuit through welding points.

[0013] According to the integrated structure of the combiner and the phase shifter, the first combined line and the fourth combined line are electrically connected via a wire.

[0014] According to the integrated structure of the combiner and the phase shifter, a second circuit board is further provided on the top surface of the fixed plate, the second circuit board is symmetrically arranged with the first circuit board, and the second circuit board and the first circuit board both operate in the first frequency band;

[0015] A third circuit board is also disposed on the bottom surface of the fixing plate, the third circuit board and the fourth circuit board are symmetrically disposed, and both the third circuit board and the fourth circuit board operate in the second frequency band;

[0016] The second circuit board includes a second phase-shifting network and at least one second combining line, and each output port of the second phase-shifting network is electrically connected to each second combining line through a connecting line;

[0017] The third circuit board comprises a third phase-shifting network and at least one third combining line, and each output port of the third phase-shifting network is electrically connected to each of the third combining lines through a connecting line;

[0018] One of the second combined lines is electrically connected to one of the third combined lines to form a combiner, and each of the combiners is electrically connected to a corresponding second output port.

[0019] According to the integrated structure of the combiner and the phase shifter, the first phase shift network and the second phase shift network are respectively provided with first phase shift sheet assemblies rotatably attached thereto, and the shaft ends of the two groups of the first phase shift sheet assemblies are respectively connected to the main feed input line of the first phase shift network and the main feed input line of the second phase shift network; the main feed input line of the first phase shift network is externally connected to the main feed line through the first main feed input port; the main feed input line of the second phase shift network is externally connected to the main feed line through the second main feed input port;

[0020] The first phase shifter assembly comprises a first phase shifter, a first phase shifter fixing member and a plurality of elastic washers, one end of each of the elastic washers is connected to the first phase shifter fixing member, and the other end is connected to the first phase shifter, and a first coupling power splitter circuit is provided on one side of the first phase shifter;

[0021] The first coupling power division circuits of the two first phase shifters are respectively attached to the first phase shift network and the second phase shift network; and

[0022] The third phase-shifting network and the fourth phase-shifting network are respectively rotatably fitted with second phase-shifting sheet assemblies, and the rotating shaft ends of the two groups of the second phase-shifting sheet assemblies are respectively connected to the main feed input line of the third phase-shifting network and the main feed input line of the fourth phase-shifting network; the main feed input line of the third phase-shifting network is externally connected to the main feed line through the third main feed input port; the main feed input line of the fourth phase-shifting network is externally connected to the main feed line through the fourth main feed input port;

[0023] The second phase shifter assembly includes a second phase shifter, a second phase shifter fixing member, and a plurality of elastic washers, one end of each of the elastic washers is connected to the second phase shifter fixing member, and the other end is connected to the second phase shifter, and a second coupling power splitter circuit is provided on one side of the second phase shifter;

[0024] The second coupling power division circuits of the two second phase shifters are respectively attached to the third phase shift network and the fourth phase shift network.

[0025] According to the integrated structure of the combiner and the phase shifter, the integrated structure further comprises a first driving assembly for driving the first phase shifter assembly to rotate, and the first driving assembly comprises a first pull rod and a first pull rod adapter;

[0026] The first pull rod is disposed between the first phase-shifting network and the second phase-shifting network;

[0027] The first pull rod adapter is fixed to the first pull rod by a buckle; a first positioning hole is opened on the first pull rod, and a first positioning column is arranged on the first pull rod adapter, and the first positioning column is arranged in the first positioning hole;

[0028] The first pull rod adapter is symmetrically provided with two first sliding grooves;

[0029] The fixing plate is provided with a first arc groove adapted to the rotation track of the other end opposite to the rotating shaft end of the first phase shifting sheet assembly; and the other end opposite to the rotating shaft end of the first phase shifting sheet fixing member is provided with a first hook and a first guide column; the first hook is hooked into the first arc groove, and the first guide column extends into the first slide groove;

[0030] A limit buckle is provided on the first pull rod, and the limit buckle is installed in a second positioning hole opened on the first pull rod; and

[0031] The integrated structure further comprises a second driving assembly for driving the second phase shifting plate assembly to rotate, wherein the second driving assembly comprises a second pull rod and a second pull rod adapter;

[0032] The second pull rod is arranged between the third phase shifting network and the fourth phase shifting network;

[0033] The second pull rod adapter is fixed to the second pull rod by a buckle; a third positioning hole is opened on the second pull rod, a second positioning column is arranged on the second pull rod adapter, and the second positioning column is arranged in the third positioning hole;

[0034] The second pull rod adapter is symmetrically provided with two second sliding grooves;

[0035] The fixing plate is provided with a second arc groove adapted to the rotation track of the other end opposite to the rotating shaft end of the second phase shifting sheet assembly; and the other end opposite to the rotating shaft end of the second phase shifting sheet fixing member is provided with a second hook and a second guide column; the second hook is hooked into the second arc groove, and the second guide column extends into the second slide groove;

[0036] The fixing plate is also provided with a plurality of guide buckles for guiding the first pull rod and the second pull rod respectively; the first pull rod and the second pull rod pass through the corresponding guide buckles respectively.

[0037] According to the integrated structure of the combiner and the phase shifter, the rotating shaft end of the first phase shifter assembly and the rotating shaft end of the second phase shifter assembly can be rotatably connected to the rotating assembly.

[0038] According to the integrated structure of the combiner and the phase shifter, the rotating assembly includes a fastening mother nail and a fastening sub-nail, the fastening mother nail is provided with an internal thread, and the fastening sub-nail is provided with an external thread;

[0039] The fastening female nail passes through the first phase-shifting sheet assembly arranged on the top surface of the fixing plate to the second phase-shifting sheet assembly arranged on the bottom surface of the fixing plate; one end of the fastening female nail abuts against the first phase-shifting sheet assembly, and the fastening sub-nail is screwed to the other end of the fastening female nail and abuts against the second phase-shifting sheet assembly; or

[0040] The rotating assembly includes a pin and a retaining ring; the pin passes through the first phase-shifting sheet assembly arranged on the top surface of the fixed plate to the second phase-shifting sheet assembly arranged on the bottom surface of the fixed plate; one end of the pin abuts against the first phase-shifting sheet assembly, and the retaining ring is clamped into the other end of the pin and abuts against the second phase-shifting sheet assembly.

[0041] According to the integrated structure of the combiner and the phase shifter, an insulating gasket is provided between the first circuit board, the second circuit board, the third circuit board and the fourth circuit board and the fixed board;

[0042] The first circuit board, the second circuit board, the third circuit board and the fourth circuit board are fixed to the fixing plate by rivets;

[0043] The integrated structure also includes a cable fastener for fixing the cable;

[0044] The connecting line is a microstrip line.

[0045] In order to achieve the above object, the present invention further provides a base station antenna, comprising the integrated structure of the combiner and the phase shifter as described in any one of the above items and a radiation unit;

[0046] The main feed input lines of the first phase-shifting network, the second phase-shifting network, the third phase-shifting network and the fourth phase-shifting network of the integrated structure are all connected to the main feed line through their main feed input ports, and the synthesizer of the integrated structure is electrically connected to an output port through a microstrip line, and the output port is connected to the radiation unit.

[0047] The embodiments of the present invention form a combiner by distributing the combining lines on the top surface of the fixed plate and the bottom surface of the fixed plate, respectively. When the first combining line on the top surface of the fixed plate and the fourth combining line on the bottom surface of the fixed plate are electrically connected, a combiner is formed. The first phase shifting network on the top surface of the fixed plate and the fourth phase shifting network on the bottom surface of the fixed plate respectively operate in different frequency bands. Since the first phase shifting network is electrically connected to the first combining line and the fourth phase shifting network is electrically connected to the fourth combining line, the combiner outputs signals of two different frequency bands to the output port. Thus, the present invention integrates the combiner and the phase shifter on the same microstrip network, has a compact structure, saves a large number of connecting cables, and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 is a schematic structural diagram of the top surface of a fixing plate of an integrated structure of a combiner and a phase shifter according to an embodiment of the present invention;

[0049] Figure 2 is a schematic structural diagram of the bottom surface of a fixing plate of an integrated structure of a combiner and a phase shifter according to an embodiment of the present invention;

[0050] Figure 3 It is a schematic diagram of the structure of a plug-in board of an integrated structure of a combiner and a phase shifter according to an embodiment of the present invention;

[0051] Figure 4 It is a schematic diagram of the connection structure of a plug-in board with an integrated structure of a combiner and a phase shifter and a first combined line and a fourth combined line according to an embodiment of the present invention;

[0052] Figure 5 is a cross-sectional view of an integrated structure of a combiner and a phase shifter according to an embodiment of the present invention;

[0053] Figure 6 It is a schematic diagram of the exploded structure of the first phase shifter assembly of the integrated structure of the combiner and the phase shifter according to an embodiment of the present invention;

[0054] Figure 7 It is a schematic diagram of the exploded structure of the second phase shifter assembly of the integrated structure of the combiner and the phase shifter according to an embodiment of the present invention;

[0055] Figure 8 It is a structural schematic diagram of a pin and a clamp ring of an integrated structure of a combiner and a phase shifter according to an embodiment of the present invention;

[0056] Fig. 9 is a structural schematic diagram of a first driving component of an integrated structure of a combiner and a phase shifter according to an embodiment of the present invention;

[0057] Fig.10 is a schematic diagram of a base station antenna according to an embodiment of the present invention. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0059] It should be noted that references to "one embodiment", "embodiment", "example embodiment", etc. in this specification refer to the embodiment described, which may include specific features, structures or characteristics, but not every embodiment must include these specific features, structures or characteristics. In addition, such expressions do not refer to the same embodiment. Furthermore, when describing specific features, structures or characteristics in conjunction with an embodiment, whether or not there is an explicit description, it has been shown that it is within the knowledge of those skilled in the art to combine such features, structures or characteristics into other embodiments.

[0060] In addition, certain words are used in the specification and subsequent claims to refer to specific components or parts. Those with ordinary knowledge in the relevant field should understand that manufacturers can use different nouns or terms to refer to the same component or part. This specification and subsequent claims do not use differences in names as a way to distinguish components or parts, but use differences in the functions of components or parts as the criteria for distinction. "Including" and "including" mentioned throughout the specification and subsequent claims are open-ended terms and should be interpreted as "including but not limited to". In addition, the word "connected" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connection through other devices.

[0061] See also Figures 1 to 9 In a first embodiment of the present invention, an integrated structure 200 of a combiner and a phase shifter is provided, comprising a fixing board 100, a first circuit board 10 and a fourth circuit board 40;

[0062] The first circuit board 10 is disposed on the top surface of the fixing board 100, and the first circuit board 10 operates in a first frequency band;

[0063] The fourth circuit board 40 is disposed on the bottom surface of the fixing board 100, and the fourth circuit board 40 operates in the second frequency band;

[0064] The first circuit board 10 includes a first phase-shifting network 11 and at least one first combining line 12, and each output port of the first phase-shifting network 11 is electrically connected to each first combining line 12 through a connecting line.

[0065] The fourth circuit board 40 includes a fourth phase-shifting network 41 and at least one fourth combining line 42, and each output port of the fourth phase-shifting network 41 is electrically connected to each fourth combining line 42 through a connecting line.

[0066] A first combined line 12 and a fourth combined line 42 are electrically connected to form a combiner, and each combiner is electrically connected to a corresponding first output port 14 .

[0067] In this embodiment, the phase shifter is an important component for electrically adjusting the downtilt angle in the base station antenna. In the mobile communication system, in order to optimize the wireless signal coverage of the service area and to suppress the mutual interference of the same-frequency signals, the downtilt angle of the base station antenna needs to be reasonably adjusted. The phase shifter continuously adjusts the antenna feed network and continuously changes the phase of each radiating unit in the antenna array, thereby realizing continuous adjustment of the antenna electrical downtilt angle under the premise that the physical position of the antenna remains unchanged. The combiner can transmit signals of multiple frequency bands simultaneously. The integrated structure 200 integrates the phase shifter and the combiner, and by distributing the combined lines on the top surface of the fixed plate 100 and the bottom surface of the fixed plate 100 respectively, a combiner is formed when the first combined line 12 on the top surface of the fixed plate 100 and the fourth combined line 42 on the bottom surface of the fixed plate 100 are electrically connected. The combiner is distributed on the top surface of the fixed plate 100 and the bottom surface of the fixed plate 100 through the first combiner line 12 and the fourth combiner line 42, respectively, so as to be connected with the first phase shift network 11 set on the top surface of the fixed plate 100 and the fourth phase shift network 41 set on the bottom surface of the fixed plate 100, thereby reducing the use of cables and solder joints, facilitating production and reducing costs. The first phase shift network 11 on the top surface of the fixed plate 100 and the fourth phase shift network 41 on the bottom surface of the fixed plate 100 respectively operate in different frequency bands. Since the first phase shift network 11 is electrically connected to the first combiner line 12, and the fourth phase shift network 41 is electrically connected to the fourth combiner line 42, the combiner can output signals of two different frequency bands to the first output port 14. Thus, the combiner and the phase shifter are integrated into the same microstrip network, which has a compact structure, saves a large number of connecting cables, and reduces costs. Optionally, the first output port 14 is arranged on the top surface of the fixed plate 100. Optionally, the combiner is electrically connected to the first output port 14 via a microstrip line. Optionally, the number of first combiner lines 12 corresponds to the number of output ports of the first phase shift network 11; similarly, the number of fourth combiner lines 42 corresponds to the number of output ports of the fourth phase shift network 41. Optionally, the first frequency band is different from the second frequency band. Optionally, the connecting line is a microstrip line, which reduces the use of cables, thereby reducing solder joints and improving production efficiency.

[0068] As an alternative embodiment, see Figure 1 to Figure 4 , the first combined line 12 is electrically connected to the fourth combined line 42 via the plug board 51;

[0069] The plug board 51 is a PCB (Printed Circuit Board) board. Both sides of the plug board 51 are provided with the same circuit 51a, and are provided with metal vias 51b. The metal (such as copper) on the vias 51b can connect the circuits 51a on both sides; the plug board 51 is welded to the first combined line 12 and the fourth combined line 42 through welding points 51c to realize the electrical connection between the first combined line 12 and the fourth combined line 42.

[0070] As an optional embodiment, the first combined line 12 and the fourth combined line 42 are electrically connected via a wire.

[0071] As an alternative embodiment, see Figure 1-2 , a second circuit board 20 is also disposed on the top surface of the fixing plate 100, the second circuit board 20 is symmetrically disposed with the first circuit board 10, and both the second circuit board 20 and the first circuit board 10 operate in the first frequency band;

[0072] A third circuit board 30 is also disposed on the bottom surface of the fixing plate 100. The third circuit board 30 and the fourth circuit board 40 are symmetrically disposed, and both the third circuit board 30 and the fourth circuit board 40 operate in the second frequency band.

[0073] The second circuit board 20 includes a second phase-shifting network 21 and at least one second combining line 22, and each output port of the second phase-shifting network 21 is electrically connected to each second combining line 22 through a connecting line.

[0074] The third circuit board 30 includes a third phase-shifting network 31 and at least one third combining line 32, and each output port of the third phase-shifting network 31 is electrically connected to each third combining line 32 through a connecting line.

[0075] A second combined line 22 and a third combined line 32 are electrically connected to form a combiner, and each combiner is electrically connected to a corresponding second output port 24 .

[0076] In this embodiment, in order to improve the integration of the integrated structure 200 of the combiner and phase shifter and reduce the cost, the first circuit board 10 and the second circuit board 20 can be symmetrically arranged on the top surface of the fixed plate 100, and the third circuit board 30 and the fourth circuit board 40 can be symmetrically arranged on the bottom surface of the fixed plate 100; the second circuit board 20 and the first circuit board 10 both work in the first frequency band; the third circuit board 30 and the fourth circuit board 40 both work in the second frequency band; the output ports of each phase shift network are preferably provided with six, and the corresponding each combiner line is provided with six. Each phase shift network is connected to a main feed input line.

[0077] As an alternative embodiment, see Figure 5-6The first phase-shifting network 11 and the second phase-shifting network 21 are respectively rotatably provided with first phase-shifting sheet assemblies 70, and the rotating shaft ends of the two sets of first phase-shifting sheet assemblies 70 are respectively connected to the main feed input line of the first phase-shifting network 11 and the main feed input line of the second phase-shifting network 21; the main feed input line of the first phase-shifting network 11 is externally connected to the main feed line through the first main feed input port 13; the main feed input line of the second phase-shifting network 21 is externally connected to the main feed line through the second main feed input port 23;

[0078] The first phase shifter assembly 70 includes a first phase shifter 71, a first phase shifter fixing member 72, and a plurality of elastic washers 75. One end of each elastic washer 75 is connected to the first phase shifter fixing member 72, and the other end is connected to the first phase shifter 71. A first coupling power division circuit 71a is provided on one side of the first phase shifter 71.

[0079] The first coupling power division circuits 71a of the two first phase shifters 71 are respectively attached to the first phase shift network 11 and the second phase shift network 21; and

[0080] See also Figure 7 The third phase-shifting network 31 and the fourth phase-shifting network 41 are respectively rotatably provided with second phase-shifting sheet assemblies 80, and the rotating shaft ends of the two sets of second phase-shifting sheet assemblies 80 are respectively connected to the main feed input line of the third phase-shifting network 31 and the main feed input line of the fourth phase-shifting network 41; the main feed input line of the third phase-shifting network 31 is externally connected to the main feed line through the third main feed input port 33; the main feed input line of the fourth phase-shifting network 41 is externally connected to the main feed line through the fourth main feed input port 43;

[0081] The second phase shifter assembly 80 includes a second phase shifter 81, a second phase shifter fixing member 82, and a plurality of elastic washers 75. One end of each elastic washer 75 is connected to the second phase shifter fixing member 82, and the other end is connected to the second phase shifter 81. A second coupling power division circuit 81a is provided on one side of the second phase shifter 81.

[0082] The second coupling power division circuits 81 a of the two second phase shifters 81 are respectively attached to the third phase shift network 31 and the fourth phase shift network 41 .

[0083] In this embodiment, the coupling power division circuit arranged on the phase shifter is connected to the main feed input circuit of the phase shifter network at the end of the rotating shaft of the phase shifter; the first phase shifter network 11 and the second phase shifter network 21 obtain the phase change of the first frequency band by rotating the first phase shifter assembly 70; the third phase shifter network 31 and the fourth phase shifter network 41 obtain the phase change of the second frequency band by rotating the second phase shifter assembly 80, thereby realizing the adjustment of the downtilt angle of the antenna beam. The elastic gasket 75 is used to provide elastic force to fit the phase shifter to the phase shifter network. The optional elastic gasket 75 can be replaced by elastic parts such as springs and rubber pads.

[0084] As an alternative embodiment, see Fig. 9 The integrated structure 200 further includes a first driving assembly for driving the first phase shifting plate assembly 70 to rotate, and the first driving assembly includes a first pull rod 55 and a first pull rod adapter 57;

[0085] The first pull rod 55 is disposed between the first phase shifting network 11 and the second phase shifting network 21;

[0086] The first pull rod adapter 57 is fixed to the first pull rod 55 through a buckle 57c; and the first pull rod 55 is provided with a first positioning hole 55a, and the first pull rod adapter 57 is provided with a positioning column 57b, and the positioning column 57b is arranged in the first positioning hole 55a;

[0087] The first pull rod adapter 57 is symmetrically provided with two first sliding grooves 57a;

[0088] The fixing plate 100 is provided with a first arc groove 101 adapted to the rotation track of the other end opposite to the rotation shaft end of the first phase shifting sheet assembly 70; and the other end opposite to the rotation shaft end of the first phase shifting sheet fixing member 72 is provided with a first hook portion 73 and a first guide column 74; the first hook portion 73 is hooked into the first arc groove 101, and the first guide column 74 extends into the first slide groove 57a and is slidably connected with the first slide groove 57a;

[0089] The first pull rod 55 is provided with a limit buckle 59, which is installed in the second positioning hole 55b provided on the first pull rod 55; the limit buckle 59 is used to limit the working stroke of the first pull rod 55.

[0090] The integrated structure 200 further includes a second driving assembly for driving the second phase shifting plate assembly 80 to rotate, and the second driving assembly includes a second pull rod 56 and a second pull rod adapter 58;

[0091] The second pull rod 56 is disposed between the third phase shifting network 31 and the fourth phase shifting network 41;

[0092] The second pull rod adapter 58 is fixed to the second pull rod 56 through a buckle 57c; and a third positioning hole is formed on the second pull rod 56, and a positioning column 57b is provided on the second pull rod adapter 58, and the positioning column 57b is disposed in the third positioning hole;

[0093] The second pull rod adapter 58 is symmetrically provided with two second sliding grooves 58a;

[0094] The fixing plate 100 is provided with a second arc groove 102 adapted to the rotation track of the other end opposite to the rotation shaft end of the second phase-shifting sheet assembly 80; and the other end opposite to the rotation shaft end of the second phase-shifting sheet fixing member 82 is provided with a second hook portion 83 and a second guide column 84; the second hook portion 83 is hooked into the second arc groove 102, and the second guide column 84 extends into the second slide groove 58a and is slidably connected with the second slide groove 58a;

[0095] The fixing plate 100 is also provided with a plurality of guide buckles 54 for guiding the first pull rod 55 and the second pull rod 56 respectively; the first pull rod 55 and the second pull rod 56 pass through the corresponding guide buckles 54 respectively.

[0096] In this embodiment, the first phase-shifting sheet assembly 70 is driven by the first driving assembly, and similarly, the second phase-shifting sheet assembly 80 is driven by the second driving assembly. When the first pull rod 55 moves horizontally due to the guiding action of the guide buckle 54, it drives the first pull rod adapter 57 to move horizontally. Since the first slide groove 57a is provided and the first guide column 74 is provided in the first slide groove 57a of the first pull rod adapter 57, the first pull rod adapter 57 drives the first guide column 74 to move along the first slide groove 57a in the vertical direction, and at the same time drives the first photo assembly to rotate around its rotating shaft end, and the first hook 73 slides in the first arc groove. Due to the rotation of the first photo assembly, the phase change of the first frequency band is realized, thereby adjusting the downtilt angle of the antenna beam. The working principle of the second driving assembly is similar, and it will not be repeated here. The phase change of the first frequency band and the phase change of the second frequency band can be carried out independently through the first driving assembly and the second driving assembly.

[0097] As an optional embodiment, the shaft ends of the first phase shifting sheet assembly 70 and the shaft ends of the second phase shifting sheet assembly 80 can be rotatably connected to the rotating assembly. Optionally, a through hole matching the rotating assembly is provided on the shaft end, and the through hole is inserted into the rotating assembly and rotatably connected to the rotating assembly.

[0098] As an alternative embodiment, see Figure 1-2 The rotating assembly includes a fastening female nail 52 and a fastening sub-nail 53, the fastening female nail 52 is provided with an internal thread, and the fastening sub-nail 53 is provided with an external thread;

[0099] The fastening mother nail 52 passes through the first phase-shifting sheet assembly 70 arranged on the top surface of the fixing plate 100 to the second phase-shifting sheet assembly 80 arranged on the bottom surface of the fixing plate 100; one end of the fastening mother nail 52 abuts against the first phase-shifting sheet assembly 70, and the fastening sub-nail 53 is screwed to the other end of the fastening mother nail 52 and abuts against the second phase-shifting sheet assembly 80, so that the first phase-shifting sheet assembly 70 and the second phase-shifting sheet assembly 80 can be rotatably attached to their corresponding phase-shifting networks through the fastening mother nail 52 and the fastening sub-nail 53; optionally, in order to prevent the threads of the fastening mother nail 52 and the fastening sub-nail 53 from loosening, anti-loosening glue can be applied to the threads. Or

[0100] See also Figure 8 The rotating assembly includes a pin 62 and a snap ring 63; the pin 62 passes through the first phase shifter assembly 70 arranged on the top surface of the fixed plate 100 to the second phase shifter assembly 80 arranged on the bottom surface of the fixed plate 100; one end of the pin 62 abuts against the first phase shifter assembly 70, and the snap ring 63 is clamped into the other end of the pin 62 and abuts against the second phase shifter assembly 80, so that the first phase shifter assembly 70 and the second phase shifter assembly 80 can be rotatably attached to their corresponding phase shift networks through the pin 62 and the snap ring 63.

[0101] As an optional embodiment, an insulating gasket 50 is provided between the first circuit board 10 , the second circuit board 20 , the third circuit board 30 , and the fourth circuit board 40 and the fixing plate 100 ;

[0102] The first circuit board 10, the second circuit board 20, the third circuit board 30 and the fourth circuit board 40 are fixed on the fixing plate 100 by rivets 61;

[0103] The integrated structure 200 further includes a cable fastener 60 for fastening cables.

[0104] See also Fig.10 , a second embodiment of the present invention provides a base station antenna 1000, comprising an integrated structure 200 of a combiner and a phase shifter as described above and a radiation unit 1200;

[0105] The main feed input lines of the first phase-shifting network, the second phase-shifting network, the third phase-shifting network and the fourth phase-shifting network of the integrated structure 200 are all connected to the main feed line 1100 through their main feed input ports 1300. The synthesizer of the integrated structure is electrically connected to an output port 1400 through a microstrip line, and the output port 1400 is connected to the radiation unit 1200.

[0106] It should be noted that the integrated structure of the combiner and phase shifter of the base station antenna provided in the embodiment of the present invention has the same specific implementation and technical effects as those in the aforementioned embodiment. For the sake of brief description, for matters not mentioned in the base station antenna embodiment, reference may be made to the corresponding contents in the aforementioned embodiment.

[0107] In summary, the embodiments of the present invention form a combiner by distributing the combining lines on the top surface of the fixed plate and the bottom surface of the fixed plate, respectively, when the first combining line on the top surface of the fixed plate and the fourth combining line on the bottom surface of the fixed plate are electrically connected. The first phase shifting network on the top surface of the fixed plate and the fourth phase shifting network on the bottom surface of the fixed plate respectively operate in different frequency bands. Since the first phase shifting network is electrically connected to the first combining line, and the fourth phase shifting network is electrically connected to the fourth combining line, the combiner outputs signals of two different frequency bands to the output port. In this way, the present invention integrates the combiner and the phase shifter on the same microstrip network, which has a compact structure, saves a large number of connecting cables, and reduces costs.

[0108] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. An integrated structure of a combiner and a phase shifter, characterized in that: It includes a fixing board, a first circuit board and a fourth circuit board; The first circuit board is arranged on the top surface of the fixing plate, and the first circuit board operates in a first frequency band; The fourth circuit board is arranged on the bottom surface of the fixing plate, and the fourth circuit board operates in the second frequency band; The first circuit board comprises a first phase-shifting network and at least one first combining line, and each output port of the first phase-shifting network is electrically connected to each first combining line through a connecting line; The fourth circuit board comprises a fourth phase-shifting network and at least one fourth combining line, and each output port of the fourth phase-shifting network is electrically connected to each of the fourth combining lines through a connecting line; One of the first combined lines is electrically connected to one of the fourth combined lines to form a combiner, and each of the combiners is electrically connected to a corresponding first output port; A second circuit board is also disposed on the top surface of the fixing plate, the second circuit board is symmetrically disposed with the first circuit board, and both the second circuit board and the first circuit board operate in the first frequency band; A third circuit board is also disposed on the bottom surface of the fixing plate, the third circuit board and the fourth circuit board are symmetrically disposed, and both the third circuit board and the fourth circuit board operate in the second frequency band; The second circuit board includes a second phase-shifting network and at least one second combining line, and each output port of the second phase-shifting network is electrically connected to each second combining line through a connecting line; The third circuit board comprises a third phase-shifting network and at least one third combining line, and each output port of the third phase-shifting network is electrically connected to each of the third combining lines through a connecting line; One of the second combined lines is electrically connected to one of the third combined lines to form a combiner, and each of the combiners is electrically connected to a corresponding second output port; The first phase-shifting network and the second phase-shifting network are respectively rotatably provided with first phase-shifting sheet assemblies, and the rotating shaft ends of the two groups of the first phase-shifting sheet assemblies are respectively connected to the main feed input line of the first phase-shifting network and the main feed input line of the second phase-shifting network; the main feed input line of the first phase-shifting network is externally connected to the main feed line through the first main feed input port; the main feed input line of the second phase-shifting network is externally connected to the main feed line through the second main feed input port; The first phase shifter assembly comprises a first phase shifter, a first phase shifter fixing member and a plurality of elastic washers, one end of each of the elastic washers is connected to the first phase shifter fixing member, and the other end is connected to the first phase shifter, and a first coupling power splitter circuit is provided on one side of the first phase shifter; The first coupling power division circuits of the two first phase shifters are respectively attached to the first phase shift network and the second phase shift network; as well as The third phase-shifting network and the fourth phase-shifting network are respectively rotatably fitted with second phase-shifting sheet assemblies, and the rotating shaft ends of the two groups of the second phase-shifting sheet assemblies are respectively connected to the main feed input line of the third phase-shifting network and the main feed input line of the fourth phase-shifting network; the main feed input line of the third phase-shifting network is externally connected to the main feed line through the third main feed input port; the main feed input line of the fourth phase-shifting network is externally connected to the main feed line through the fourth main feed input port; The second phase shifter assembly includes a second phase shifter, a second phase shifter fixing member, and a plurality of elastic washers, one end of each of the elastic washers is connected to the second phase shifter fixing member, and the other end is connected to the second phase shifter, and a second coupling power splitter circuit is provided on one side of the second phase shifter; The second coupling power division circuits of the two second phase shifters are respectively attached to the third phase shift network and the fourth phase shift network.

2. The integrated structure of combiner and phase shifter according to claim 1, characterized in that: The first combined line is electrically connected to the fourth combined line via a plug board; The plug board is a PCB board, and circuits are arranged on both sides of the plug board, and metal vias are provided; the plug board is welded to the first combined circuit and the fourth combined circuit through welding points.

3. The integrated structure of combiner and phase shifter according to claim 1, characterized in that: The first combined line and the fourth combined line are electrically connected via a wire.

4. The integrated structure of combiner and phase shifter according to claim 1, characterized in that: The integrated structure further comprises a first driving assembly for driving the first phase shifting plate assembly to rotate, wherein the first driving assembly comprises a first pull rod and a first pull rod adapter; The first pull rod is disposed between the first phase-shifting network and the second phase-shifting network; The first pull rod adapter is fixed to the first pull rod by a buckle; a first positioning hole is opened on the first pull rod, and a first positioning column is arranged on the first pull rod adapter, and the first positioning column is arranged in the first positioning hole; The first pull rod adapter is symmetrically provided with two first sliding grooves; The fixing plate is provided with a first arc groove adapted to the rotation track of the other end opposite to the rotating shaft end of the first phase shifting sheet assembly; and the other end opposite to the rotating shaft end of the first phase shifting sheet fixing member is provided with a first hook and a first guide column; the first hook is hooked into the first arc groove, and the first guide column extends into the first slide groove; A limit buckle is provided on the first pull rod, and the limit buckle is installed in a second positioning hole opened on the first pull rod; and The integrated structure further comprises a second driving assembly for driving the second phase shifting plate assembly to rotate, wherein the second driving assembly comprises a second pull rod and a second pull rod adapter; The second pull rod is arranged between the third phase shifting network and the fourth phase shifting network; The second pull rod adapter is fixed to the second pull rod by a buckle; a third positioning hole is opened on the second pull rod, a second positioning column is arranged on the second pull rod adapter, and the second positioning column is arranged in the third positioning hole; The second pull rod adapter is symmetrically provided with two second sliding grooves; The fixing plate is provided with a second arc groove adapted to the rotation track of the other end opposite to the rotating shaft end of the second phase shifting sheet assembly; and the other end opposite to the rotating shaft end of the second phase shifting sheet fixing member is provided with a second hook and a second guide column; the second hook is hooked into the second arc groove, and the second guide column extends into the second slide groove; The fixing plate is also provided with a plurality of guide buckles for guiding the first pull rod and the second pull rod respectively; the first pull rod and the second pull rod pass through the corresponding guide buckles respectively.

5. The integrated structure of combiner and phase shifter according to claim 4, characterized in that: The rotating shaft end of the first phase-shifting sheet assembly and the rotating shaft end of the second phase-shifting sheet assembly can be rotatably connected to the rotating assembly.

6. The integrated structure of combiner and phase shifter according to claim 5, characterized in that: The rotating assembly comprises a fastening female nail and a fastening sub-nail, wherein the fastening female nail is provided with an internal thread, and the fastening sub-nail is provided with an external thread; The fastening female nail passes through the first phase-shifting sheet assembly arranged on the top surface of the fixing plate to the second phase-shifting sheet assembly arranged on the bottom surface of the fixing plate; one end of the fastening female nail abuts against the first phase-shifting sheet assembly, and the fastening sub-nail is screwed to the other end of the fastening female nail and abuts against the second phase-shifting sheet assembly; or The rotating assembly includes a pin and a retaining ring; the pin passes through the first phase-shifting sheet assembly arranged on the top surface of the fixed plate to the second phase-shifting sheet assembly arranged on the bottom surface of the fixed plate; one end of the pin abuts against the first phase-shifting sheet assembly, and the retaining ring is clamped into the other end of the pin and abuts against the second phase-shifting sheet assembly.

7. The integrated structure of combiner and phase shifter according to claim 1, characterized in that: An insulating gasket is provided between the first circuit board, the second circuit board, the third circuit board and the fourth circuit board and the fixing plate; The first circuit board, the second circuit board, the third circuit board and the fourth circuit board are fixed to the fixing plate by rivets; The integrated structure also includes a cable fastener for fixing the cable; The connecting line is a microstrip line.

8. A base station antenna, characterized in that: An integrated structure of a combiner and a phase shifter as claimed in any one of claims 1 to 7 and a radiation unit; The main feed input lines of the first phase-shifting network, the second phase-shifting network, the third phase-shifting network and the fourth phase-shifting network of the integrated structure are all connected to the main feed line through their main feed input ports, and the combiner of the integrated structure is electrically connected to an output port through a microstrip line, and the output port is connected to the radiation unit.

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