CN114447611A - Multi-frequency fusion phase-shifting feed network and base station antenna - Google Patents
Multi-frequency fusion phase-shifting feed network and base station antenna Download PDFInfo
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- CN114447611A CN114447611A CN202210002185.4A CN202210002185A CN114447611A CN 114447611 A CN114447611 A CN 114447611A CN 202210002185 A CN202210002185 A CN 202210002185A CN 114447611 A CN114447611 A CN 114447611A
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- 230000004927 fusion Effects 0.000 title claims abstract description 34
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- 238000005859 coupling reaction Methods 0.000 claims description 31
- 230000005855 radiation Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 238000003466 welding Methods 0.000 abstract description 9
- 230000008859 change Effects 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000010363 phase shift Effects 0.000 description 91
- 238000009434 installation Methods 0.000 description 9
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- 238000010586 diagram Methods 0.000 description 4
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
- H01P1/184—Strip line phase-shifters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- Computer Networks & Wireless Communication (AREA)
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
The invention relates to the technical field of antennas, and provides a multi-frequency fusion phase-shifting feed network and a base station antenna, wherein the multi-frequency fusion phase-shifting feed network comprises a plurality of phase-shifting assemblies, each phase-shifting assembly comprises a phase-shifting circuit board and a sliding piece assembly which is rotationally connected with the phase-shifting circuit board, the phase-shifting circuit board is provided with a phase-shifting circuit, the phase-shifting circuit boards are divided into a first phase-shifting circuit board and a second phase-shifting circuit board, the first phase-shifting circuit board is provided with a combining circuit, and phase-shifting output ports of the phase-shifting circuit on the first phase-shifting circuit board and the phase-shifting circuit on the second phase-shifting circuit board are respectively connected with a combining input port of the combining circuit. The multi-frequency fusion phase-shifting feed network and the base station antenna can realize multi-frequency independent phase shifting and fusion output, do not need to be provided with a combiner independently, are favorable for reducing the occupied space of the antenna, simplifying the layout and reducing cable welding spots; the phase-shifting feed network has good phase change stability, good consistency and convenient assembly.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a multi-frequency fusion phase-shifting feed network and a base station antenna.
Background
With the development of mobile communication technology, more and more mobile users have higher and higher requirements on communication quality and larger capacity. In order to meet the increasingly developed requirements of mobile networks, operators put forward various communication network standards, and in order to save station sites and antenna feed resources and reduce operation cost, co-station co-location multi-frequency co-ordination antennas become the first choice for network establishment.
Meanwhile, in order to improve the utilization efficiency and the coverage area of the base station, different wave beam directions are formed in different frequency bands of the base station antenna, the wave beam directions are adjusted according to different users, the user target is accurately covered, and the service quality and the communication efficiency are greatly improved. In this case, a multi-frequency integrated feed network with independent electric regulation for different frequency bands is required.
The existing scheme is mainly that a combiner is arranged below a radiation oscillator, and each frequency band is electrically adjusted through a phase shifter and then is connected to the combiner for combining and then is connected with the radiation oscillator. The existing feed network has the problems of large occupied antenna space, complex layout, multiple cable welding spots, large intermodulation risk and poor index consistency.
Disclosure of Invention
The invention provides a multi-frequency fusion phase-shifting feed network and a base station antenna, which are used for solving the problems of large occupied antenna space, complex layout, multiple cable welding spots, high intermodulation risk and poor index consistency of the conventional feed network.
The invention provides a multi-frequency fusion phase-shifting feed network which comprises a plurality of phase-shifting assemblies, wherein each phase-shifting assembly comprises a phase-shifting circuit board and a sliding sheet assembly which is rotationally connected with the phase-shifting circuit board, the corresponding part of the phase-shifting circuit board and the sliding sheet assembly is provided with a phase-shifting circuit, the phase-shifting circuit boards are divided into a first phase-shifting circuit board and a second phase-shifting circuit board, the first phase-shifting circuit board is provided with a combining circuit, and the phase-shifting output ports of the phase-shifting circuits on the first phase-shifting circuit board and the second phase-shifting circuit board are respectively connected with the combining input port of the combining circuit.
According to the multi-frequency fusion phase-shifting feed network provided by the invention, the combiner circuit is connected with the phase-shifting output port on the first phase-shifting circuit board through the microstrip line, and the combiner circuit is connected with the phase-shifting output port on the second phase-shifting circuit board through the cable.
According to the multi-frequency fusion phase-shifting feed network provided by the invention, the combining circuits are distributed at two ends of the first phase-shifting circuit board, and at any end of the first phase-shifting circuit board, a combining input port and a combining output port which are connected with the second phase-shifting circuit board by the combining circuits are arranged at the end parts of the phase-shifting circuit board.
According to the multi-frequency fusion phase-shifting feed network provided by the invention, the first phase-shifting circuit board is connected to the first supporting plate, two ends of the first supporting plate are respectively provided with a wire clamp, and the wire clamp is provided with a cable clamping groove.
According to the multi-frequency fusion phase-shifting feed network provided by the invention, the end part of the first supporting plate is provided with a step part, and the line card is arranged at the step part.
According to the multi-frequency fusion phase-shifting feed network provided by the invention, the phase-shifting circuit boards are stacked up and down, and two adjacent phase-shifting circuit boards are connected through the supporting piece.
According to the multi-frequency fusion phase-shifting feed network provided by the invention, the sliding vane component comprises a coupling sliding vane and a rotating shaft, the rotating shaft sequentially penetrates through one end of the coupling sliding vane and the phase-shifting circuit board, one end of the rotating shaft penetrating through the phase-shifting circuit board is detachably connected with a fastener, the coupling sliding vane is rotatably connected to the rotating shaft, and the rotating shaft and the phase-shifting circuit board are integrally and fixedly connected through the fastener.
According to the multi-frequency fusion phase-shifting feed network provided by the invention, the fastening piece is a fastening nut, and the part of the rotating shaft, which penetrates out of the phase-shifting circuit board, is provided with an external thread matched with the fastening nut; and one side of the fastening nut, which faces the phase-shifting circuit board, is provided with an elastic arm.
According to the multi-frequency fusion phase-shifting feed network provided by the invention, a positioning structure is also arranged between the fastening nut and the phase-shifting circuit board; the positioning structure comprises a convex block arranged on one side of the fastening nut, which faces towards the phase-shifting circuit board, and a positioning hole arranged on the first supporting plate and matched with the convex block.
The invention also provides a base station antenna which comprises the multi-frequency fusion phase-shifting feed network and a plurality of radiation oscillators, wherein the plurality of radiation oscillators are correspondingly connected with the combiner output ports of the combiner circuits one by one.
The invention provides a multi-frequency fusion phase-shifting feed network and a base station antenna.A plurality of phase-shifting components are arranged to realize independent phase shifting of different frequency bands, and phase-shifting output ports of the plurality of phase-shifting components are connected to a combining circuit of a first phase-shifting circuit board; the combiner circuit is integrated on the first phase-shifting circuit board, a combiner is not required to be arranged independently, connection is convenient, occupied antenna space is reduced, layout is simplified, and cable welding spots are reduced; the phase shift assembly comprises a phase shift circuit board and a slide assembly, has a simple structure and is beneficial to reducing the installation space; the phase-shifting feed network has good phase change stability, good consistency and convenient assembly.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is an overall exploded schematic view of a multi-frequency fusion phase-shifting feed network provided by the present invention;
FIG. 2 is an exploded view of a first phase shifting circuit board arrangement provided by the present invention;
FIG. 3 is a schematic diagram of a first phase shifting circuit board provided by the present invention;
FIG. 4 is a schematic diagram of a second phase shifting circuit board provided by the present invention;
fig. 5 is a schematic structural diagram of a first support plate provided by the present invention;
FIG. 6 is a schematic diagram of a line card according to the present invention;
FIG. 7 is a schematic structural view of a support provided by the present invention;
FIG. 8 is a schematic structural view of a spindle provided in the present invention;
FIG. 9 is a first schematic view of a fastening nut provided by the present invention;
FIG. 10 is a second schematic view of the fastening nut provided by the present invention;
FIG. 11 is a schematic view of a retaining clip according to the present invention;
reference numerals:
101: a first phase shift circuit board; 102: a second phase shift circuit board; 201: a first support plate;
202: a second support plate; 2011: a step portion; 2012: installing a clamping groove;
2013: opening a hole; 2014: an assembly hole; 2015: positioning holes;
3: a slide assembly; 301: coupling the sliding sheet; 302: a rotating shaft;
303: fastening a nut; 304: a fixing clip; 3021: a blocking table;
3022: cutting into noodles; 3023: an external thread; 3031: a threaded hole;
3032: a resilient arm; 3033: a bump; 3041: a circular hole;
3042: an elastic member; 4: a phase shift circuit; 5: a combiner circuit;
501: a combiner input port; 502: a combiner output port; 503: a pad;
6: a support member; 601: mounting holes; 602: a positioning column;
7: a line card; 701: a cable slot; 702: and (5) installing a buckle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A multi-frequency fusion phase-shifting feed network and a base station antenna according to the present invention are described below with reference to fig. 1 to 11.
Referring to fig. 1, the present embodiment provides a multi-frequency blending phase-shifting feed network, which includes a plurality of phase-shifting components, each of the phase-shifting components includes a phase-shifting circuit board and a slider component 3 rotatably connected to the phase-shifting circuit board, and a phase-shifting circuit 4 is disposed on a portion of the phase-shifting circuit board corresponding to the slider component 3. The slide member 3 is rotatable relative to the phase shift circuit board, and the phase shift circuit 4 is provided within a rotation range of the slide member 3. The phase shift assembly rotates relative to the phase shift circuit board through the sliding plate assembly 3 to enable phase difference of each port to be changed, and therefore the antenna beam of the base station is declined.
The plurality of phase shift circuit boards are divided into a first phase shift circuit board 101 and a second phase shift circuit board 102, a combining circuit 5 is arranged on the first phase shift circuit board 101, and the phase shift output ports of the phase shift circuits 4 on the first phase shift circuit board 101 and the phase shift output ports of the phase shift circuits 4 on the second phase shift circuit board 102 are respectively connected to a combining input port 501 of the combining circuit 5.
In this embodiment, the phase shift circuit board provided with the combining circuit 5 is referred to as a first phase shift circuit board 101, and the phase shift circuit board not provided with the combining circuit 5 is referred to as a second phase shift circuit board 102. That is, the combiner circuit 5 is integrally arranged on the first phase-shift circuit board 101 in the present embodiment; the phase shift output ports of the multiple phase shift circuit boards are simultaneously connected to the combining input port 501 of the combining circuit 5, so that the output is combined by the combining circuit 5. The phase shift circuit boards can correspond to antenna signals of multiple frequency bands, so that multi-frequency combined output is realized through the combining circuit 5.
In the multi-frequency fusion phase-shifting feed network provided by this embodiment, a plurality of phase-shifting components are arranged to realize independent phase shifting of different frequency bands, and phase-shifting output ports of the plurality of phase-shifting components are all connected to the combining circuit 5 of the first phase-shifting circuit board 101, so that different frequency bands are fused through the combining circuit 5, and multi-frequency independent phase shifting and fusion output are realized; the combiner circuit 5 is integrated on the first phase-shifting circuit board 101, a combiner is not required to be arranged independently, connection is convenient, occupied antenna space is reduced, layout is simplified, and cable welding spots are reduced; the phase shift assembly comprises a phase shift circuit board and a sliding piece assembly 3, has a simple structure and is beneficial to reducing the installation space; the phase-shifting feed network has good phase change stability, good consistency and convenient assembly.
Specifically, the number of the phase shift output ports on each phase shift circuit board is the same, and is the same as the number of the combining circuits 5, the number of the combining input ports 501 of each combining circuit 5 is the same as the number of the phase shift circuit boards, and each combining circuit 5 is provided with one combining output port 502. The corresponding phase shift output ports on the multiple phase shift circuit boards are connected with the multiple combining input ports 501 of one combining circuit 5 in a one-to-one correspondence manner, and output after combining.
For example, referring to fig. 1 and fig. 2, in the present embodiment, a first phase shift circuit board 101 and a second phase shift circuit board 102 are provided, where the first phase shift circuit board 101 has a phase shift input port and 7 phase shift output ports, and the second phase shift circuit board 102 also has a phase shift input port and 7 phase shift output ports; the first phase-shift circuit board 101 is provided with combiner circuits 5 at positions corresponding to the 7 phase-shift output ports, namely the first phase-shift circuit board 101 is provided with 7 combiner circuits 5; for each combining circuit 5 there are two combining input ports 501 and one combining output port 502. One of the two combining input ports 501 of each combining circuit 5 is connected to the phase-shift output port on the first phase-shift circuit board 101, and the other is connected to the corresponding phase-shift output port on the second phase-shift circuit board 102. Therefore, a set of corresponding phase shift output ports on the first phase shift circuit board 101 and the second phase shift circuit board 102 are connected with one combining circuit 5, and output after combining.
In other embodiments, the number of the phase shift output ports on each phase shift circuit board may not be other, and the number of the corresponding combiner circuits 5 may also be other, which is not limited specifically. The number of the phase shift circuit boards may also be three or more, so as to realize more combined outputs of different frequency bands, and the specific limitation is not limited.
On the basis of the above embodiment, further referring to fig. 1, the combining circuit 5 is connected to the phase-shift output port on the first phase-shift circuit board 101 through a microstrip line, and the combining circuit 5 is disposed on the first phase-shift circuit board 101, and the microstrip line can be directly disposed to connect the phase-shift output port on the first phase-shift circuit board 101 and the combining input port 501, so that the cable arrangement is reduced, the welding spots are reduced, and the connection is facilitated. The combiner circuit 5 is connected with the phase shift output port of the second phase shift circuit board 102 through a cable. The connection can be made by wire welding.
On the basis of the above embodiments, further referring to fig. 3, the combining circuit 5 is distributed at two ends of the first phase-shifting circuit board 101, and at any end of the first phase-shifting circuit board 101, the combining input port 501 and the combining output port 502, which are connected to the second phase-shifting circuit board 102, of the combining circuit 5 are both disposed at the end of the phase-shifting circuit board. In this embodiment, the combining circuits 5 are distributed at two ends of the first phase-shift circuit board 101, so that the connection ports of the combining circuits 5 can be conveniently distributed at the end of the first phase-shift circuit board 101, thereby facilitating the connection of the combining circuits 5; and the phase shift circuit is located at the middle part of the first phase shift circuit board 101, which is convenient for the arrangement of the sliding sheet assembly 3.
Specifically, the combining input ports 501 and the combining output ports 502 of the combining circuit 5 and the second phase-shift circuit board 102 are arranged in a row. The ports are orderly arranged, so that orderly connection is realized, and the cable arrangement is convenient. Furthermore, the connection ports of the phase shifting circuit on the second phase shifting circuit board 102 can be distributed at the two ends; so that the connection is orderly.
Further, referring to fig. 3, bonding pads 503 are disposed at a combining input port 501 and a combining output port 502 of the combining circuit 5 connected to the second phase-shift circuit board 102. For soldering connection with a cable. At either end of the first phase shift circuit board 101, the pads 503 may be arranged in a column so as to be connected in order to facilitate soldering. Referring to fig. 4, the second phase-shifting circuit board 102 may also be provided with pads 503 at each connection port of the phase-shifting circuit 4 for soldering connection with a wire.
On the basis of the above embodiment, further, referring to fig. 2, the first phase-shift circuit board 101 is connected to the first support plate 201. The first support plate 201 can support and fix the first phase-shifting circuit board 101, so as to facilitate supporting and mounting the first phase-shifting circuit board 101. The two ends of the first supporting plate 201 are also respectively provided with a wire clamp 7, and the wire clamp 7 is provided with a cable clamping groove 701. At the two ends of the first phase-shifting circuit board 101, the cables connected at the connecting ports of the combiner circuit 5 can be fixedly supported through the cable slots 701 on the line cards 7, so that the ordered arrangement of the cables can be realized.
Further, the first phase shifting circuit board 101 and the first support plate 201 may be fixedly connected by rivets, and the specific connection manner may be other, which is not limited. Referring to fig. 1, the second phase shift circuit board 102 is attached to the second support plate 202. The second support plate 202 can support and fix the second phase shift circuit board 102, so as to facilitate the supporting and mounting of the second phase shift circuit board 102. Further, two ends of the second support plate 202 can be respectively provided with a wire clip 7 for fixing a cable; the specific arrangement structure may be similar to the arrangement of the wire clip 7 on the first support plate 201, and will not be described again.
On the basis of the above embodiment, further referring to fig. 5, the end of the first support plate 201 is provided with a step part 2011, and the line card 7 is provided at the step part 2011. So that the surface is flush with the lower surface of the first phase shift circuit board 101. The tip of first backup pad 201 can integrative bending type becomes step position 2011 for the surface at tip position is less than the surface of middle part, thereby when step position 2011 is installed to ply-yarn drill 7, can make the upper surface of ply-yarn drill 7 and first looks circuit board 101's surface parallel and level, is convenient for fix the cable on ply-yarn drill 7.
Referring to fig. 5 and 6, the upper surface and the lower surface of the line card 7 are respectively provided with a cable slot 701, and the first support plate 201 is provided with an opening 2013 corresponding to the cable slot 701 on the lower surface of the line card 7. The cable slot 701 on the lower surface of the line card 7 correspondingly passes through the opening 2013 on the first support plate 201 and is used for fixing a cable. The lower surface of the line card 7 is provided with an installation buckle 702, and the first support plate 201 is provided with an installation clamping groove 2012 matched with the installation buckle 702. The installation buckle 702 on the line card 7 is connected with the installation clamping groove 2012 on the first support plate 201 in a matching manner, so that the line card 7 is fixedly connected with the first support plate 201. Fig. 5 only illustrates the structural arrangement of the opening 2013 and the mounting slot 2012, and the specific arrangement position and number of the opening 2013 and the mounting slot 2012 are not limited.
On the basis of the above embodiment, further, referring to fig. 1, a plurality of phase shift circuit boards are stacked up and down, and two adjacent phase shift circuit boards are connected by a supporting member 6. The phase shift assembly in this embodiment adopts the structure of piling up the setting, and the cable of being convenient for sets up the connection, and compact structure is favorable to reducing installation occupation space.
Further, referring to fig. 7, the top and the bottom of the supporting member 6 are respectively provided with a mounting hole 601, and the phase shift circuit board is detachably connected with the supporting member 6 at the mounting hole 601; the removable attachment may be by screws or the like. A matched positioning structure is also arranged between the supporting piece 6 and the phase-shifting circuit board. Specifically, in the present embodiment, the supporting member 6 may be i-shaped, and the upper and lower surfaces are used for connecting to the adjacent phase-shifting circuit boards; the support 6 may have other structures, and is not limited in particular. The top and the bottom of the supporting piece 6 can be respectively provided with a positioning column 602, the phase-shift circuit board can be correspondingly provided with matched through holes, and the positioning is realized through the insertion of the positioning column 602 and the through holes, so that the installation is convenient.
On the basis of the above embodiment, further, referring to fig. 2, the slider assembly 3 includes a coupling slider 301 and a rotating shaft 302, the rotating shaft 302 sequentially passes through one end of the coupling slider 301 and the phase-shift circuit board, one end of the rotating shaft 302 penetrating through the phase-shift circuit board is detachably connected with a fastener, the coupling slider 301 is rotatably connected to the rotating shaft 302, and the rotating shaft 302 and the phase-shift circuit board are integrally and fixedly connected through the fastener. The end of the rotating shaft 302 penetrating through the phase-shifting circuit board is connected with the fastener to realize the integral connection with the phase-shifting circuit board, i.e. the rotating shaft 302 is non-rotatably connected with the phase-shifting circuit board. The coupling slide sheet 301 is provided with a coupling circuit, the coupling slide sheet 301 can rotate relative to the rotating shaft 302, and phase shift adjustment can be realized through rotation of the coupling slide sheet 301.
Furthermore, the phase-shift circuit board is provided with an assembly hole 2014 for the shaft 302 to pass through, the assembly hole 2014 is a non-circular hole 3041, and a portion of the shaft 302 corresponding to the phase-shift circuit board is matched with the non-circular hole 3041. Referring to fig. 8, the side wall of the rotating shaft 302 can be provided with a cut 3022, so that the rotating shaft 302 has a non-circular cross section partially for matching with the assembling hole 2014 of the phase-shifting circuit board, thereby realizing the non-rotation of the rotating shaft 302 relative to the phase-shifting circuit board. Further, the support plate (including the first support plate 201 or the second support plate 202) may also have a mounting hole 2014 corresponding to the rotating shaft 302, where the mounting hole 2014 is a non-circular hole 3041, and is used to match with the rotating shaft 302 to implement the non-rotatable connection between the rotating shaft 302 and the support plate. The assembly aperture 2014 may be a D-shaped aperture.
Referring to fig. 2 and 8, a blocking table 3021 is disposed at an end of the rotating shaft 302 penetrating through the coupling slide 301, and a cross-sectional dimension of the blocking table 3021 is larger than a cross-sectional dimension of the rotating shaft 302; one end of the rotating shaft 302 is provided with a blocking table 3021, and the other end of the rotating shaft passes through the coupling slide sheet 301 and the phase-shifting circuit board in sequence and then is connected with a fastener. Blocking stage 3021 is used to block the rotation shaft 302 from sliding out of the coupling slide 301 and the phase shift circuit board. The block table 3021 is provided with a fool-proof structure. The fool-proof structure is used for identifying the correct matching position of the rotating shaft 302 and the assembling hole 2014, so that the rotating shaft 302 can smoothly pass through the assembling hole 2014, and smooth connection with the phase-shifting circuit board is realized. Specifically, the fool-proof structure may be a shape identifier of the blocking table 3021, that is, the blocking table 3021 may be configured to be a non-centrosymmetric structure for identifying the assembling direction; the fool-proof structure can also be in other forms, and is not limited specifically.
On the basis of the above embodiment, further, referring to fig. 8 and 9, the fastener is a fastening nut 303. The fastening nut 303 has a threaded hole 3031; the part of the rotating shaft 302 penetrating out of the phase-shifting circuit board is provided with an external thread 3023 matched with the fastening nut 303; the shaft 302 and the fastening nut 303 may be connected by a screw. And one side of the fastening nut 303 facing the phase shift circuit board is provided with an elastic arm 3032. The elastic arm 3032 is of an elastic structure, and when the fastening nut 303 is connected with the rotating shaft 302, the elastic arm 3032 can be in abutting contact with the phase-shifting circuit board or the supporting plate, so that the fastening connection of the rotating shaft 302 is realized.
Specifically, referring to fig. 9 and 10, in the present embodiment, a plurality of elastic arms 3032 may be circumferentially disposed on the fastening nut 303, and the specific number of the elastic arms 3032 is not limited.
On the basis of the above embodiment, further, a positioning structure is further provided between the fastening nut 303 and the phase shift circuit board; referring to fig. 5 and 9, the positioning structure includes a protrusion 3033 provided on a side of the fastening nut 303 facing the phase-shift circuit board, and a positioning hole 2015 provided on the first support plate 201 and matched with the protrusion 3033. When the rotating shaft 302 and the fastening nut 303 are connected in place, the protrusion 3033 on the fastening nut 303 can be correspondingly inserted into the positioning hole 2015 on the first supporting plate 201, so that the position of the fastening nut 303 can be limited, and the connection firmness is ensured.
Further, referring to fig. 5, a plurality of positioning holes 2015 are provided, and the plurality of positioning holes 2015 are distributed in a circular shape. So that the fastening nut 303 has a plurality of positioning positions in the circumferential direction, and the mounting flexibility and the applicability are improved. Further, the connection of the fastening nut 303 and the second support plate 202 is similar to the first support plate 201, and thus, the description thereof is omitted.
Referring to fig. 2, the slide assembly 3 further includes a fixing clip 304, the fixing clip 304 is disposed on a side of the coupling slide 301 away from the phase shift circuit board, the fixing clip 304 is rotatably connected to the rotating shaft 302 at a first end, and a slot for the coupling slide 301 to pass through is disposed at a second end; the coupling slide 301 passes through the slot to realize integral rotation connection with the fixing clip 304. The first end of the fixing clip 304 may be provided with a circular hole 3041 for the rotating shaft 302 to rotate through, so as to realize the rotating connection with the rotating shaft 302. And a support structure is arranged between the fixing clip 304 and the coupling slide 301. The supporting structure is used for applying supporting force towards the phase-shifting circuit board to the coupling sliding sheet 301, so that the gap between the coupling sliding sheet 301 and the phase-shifting circuit board is kept stable, and the phase-shifting stability is improved.
Further, referring to fig. 11, the supporting structure includes an elastic member 3042 provided to the fixing clip 304; the elastic member 3042 is disposed on a side of the fixing clip 304 facing the coupling slide 301, and is configured to abut between the fixing clip 304 and the coupling slide 301 to apply an elastic supporting force to the coupling slide 301. The elastic member 3042 has elasticity, and may be an elastic block, an elastic sheet, or an elastic bump, which is not limited in detail. Fig. 2 and 11 mainly show the arrangement of the circular hole 3041, the slot and the supporting structure on the fixing clip 304, and the other structures are not limited.
On the basis of the foregoing embodiments, further, this embodiment provides a base station antenna, which includes the multi-frequency fusion phase-shifting feed network described in any of the foregoing embodiments, and further includes a plurality of radiation oscillators, where the plurality of radiation oscillators are connected to the combiner output ports 502 of the plurality of combiner circuits 5 in a one-to-one correspondence manner.
On the basis of the above embodiment, further, the present embodiment is based on the problem that the existing phase shifter and combiner are independently placed inside the base station antenna, the occupied space inside the base station antenna is large, the layout is complex, meanwhile, multiple frequency bands are mutually connected through cable terminals, the welding spots are multiple, the intermodulation risk is large, and the index consistency is poor, and a multi-frequency integration independent phase shifting feed network integrating the phase shifting circuit and the combiner circuit 5 is provided. The phase-shifting feed network comprises: the phase-shifting circuit, the combining circuit 5, the coupling circuit, the supporting and fixing structure and the rotating structure; the rotating structure rotates to drive the coupling circuit to rotate around the rotating shaft 302 and cling to the phase shifting circuit, so that independent phase shifting of different frequency bands is realized, different frequency bands are fused through cable connection, phase shifting and combined output is realized, and multi-frequency independent phase shifting and fused output are realized. The embodiment has good phase change stability, and has the effects of simple structure, low cost, good consistency, convenience in assembly and the like.
Specifically, the phase shift circuit, the combiner circuit 5 and the coupling circuit include: the phase-shifting circuit board is a PCB board which is fixed on the metal plate supporting plate; the combiner circuit 5 is integrated on a phase-shifting circuit board; the coupling circuit is provided on the coupling slide 301. The support fixing structure and the rotating structure comprise a fixing clamp 304, a first support plate 201, a second support plate 202, a high-temperature-resistant retaining rivet, a line clamp 7, a rotating shaft 302, namely a fixing screw, and a fastening nut 303. The gleitbretter hugs closely the PCB board under fixation clamp 304 and set screw's limiting displacement, and set screw passes fixation clamp 304, gleitbretter, PCB board and panel beating backup pad, possesses spacing characteristic and can be fixed with the panel beating backup pad, cooperates through screw and fastening nut 303, and fixation clamp 304 and gleitbretter rotate with set screw to be connected.
The fastening nut 303 has a threaded hole 3031 which is a standard nut feature, and can be assembled automatically by using a torsion tool. The fastening nut 303 has a nut dead-stop position, namely a bump 3033, which can achieve the dead-stop effect after being fixed with the fixing screw, and has the characteristics of an elastic arm 3032, and after being matched with the fixing screw, the elastic arm 3032 can provide a proper pressing force to ensure that a sliding sheet PCB and a PCB between the fastening nut 303 and the fixing screw are tightly attached. The panel beating backup pad has fastening nut 303 locating hole 2015, can guarantee that the fixed back joint of nut prevents not hard up in locating hole 2015. The panel beating backup pad has bending characteristic and ply-yarn drill 7 fixed orifices characteristic, and the bending characteristic is unanimous with ply-yarn drill 7 thickness, can guarantee that ply-yarn drill 7 fixed back upper surface can with main PCB substrate lower surface parallel and level.
A plurality of arc slow wave microstrip line structures which are uniformly distributed, namely phase shifting circuits, are arranged on the first PCB and the second PCB, and the arc slow wave microstrip line structures have the same circle center. The first PCB board is provided with a combiner circuit 5, and two ends of the arc-shaped slow wave microstrip line structure are connected with the first PCB board through the microstrip circuit. The first PCB board is connected with the second PCB board through a plurality of coaxial cables.
The first phase-shifting network is that the sliding-vane PCB is tightly attached to the first PCB under the action of the fixing clamp 304 and rotates by taking a fixing screw as a shaft, and specific power distribution and phase change are realized by signals through the sliding-vane PCB and an arc slow-wave microstrip line structure. The second phase shifting network is a sliding sheet PCB tightly attached to the second PCB board under the action of the fixing clamp 304, and independent phase shifting is realized in the same way as the first phase shifting network. The first phase-shifting network and the combining network are arranged on the same main PCB and are connected through a microstrip line; the second phase shifting network is connected with the combining network through a cable, and the independent phase shifting network with different frequencies integrated is realized through cable output.
Wherein, ply-yarn drill 7 has the buckle characteristic, is fixed in on foretell panel beating backup pad. The wire clamp 7 can support the welding point of the PCB substrate after being fixed, and the situation that any stress does not exist between the welded cable and the PCB is guaranteed. The first phase shifting network and the second phase shifting network are fixedly supported by a plurality of I-shaped supporting pieces 6.
This embodiment integrates on first PCB board and moves phase and way network, and very big improvement feeds electric network's integrated level, and whole feeding network makes the volume littleer, and the performance uniformity is better to realize independently moving the phase, improved communication efficiency simultaneously under the condition that reduces communication base station volume.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The multi-frequency fusion phase-shifting feed network is characterized by comprising a plurality of phase-shifting assemblies, wherein each phase-shifting assembly comprises a phase-shifting circuit board and a sliding piece assembly which is rotatably connected with the phase-shifting circuit board, the corresponding part of the phase-shifting circuit board and the sliding piece assembly is provided with a phase-shifting circuit, the phase-shifting circuit boards are divided into a first phase-shifting circuit board and a second phase-shifting circuit board, the first phase-shifting circuit board is provided with a combining circuit, and the phase-shifting output ports of the phase-shifting circuits on the first phase-shifting circuit board and the second phase-shifting circuit board are respectively connected with the combining input port of the combining circuit.
2. The multi-frequency fusion phase-shifting feed network according to claim 1, wherein the combining circuit is connected to the phase-shifting output port of the first phase-shifting circuit board through a microstrip line, and the combining circuit is connected to the phase-shifting output port of the second phase-shifting circuit board through a cable.
3. The multi-frequency fusion phase-shifting feed network according to claim 1, wherein the combining circuits are distributed at two ends of the first phase-shifting circuit board, and at any end of the first phase-shifting circuit board, the combining input port and the combining output port of the combining circuit, which are connected with the second phase-shifting circuit board, are both arranged at the end of the phase-shifting circuit board.
4. The multi-frequency fusion phase-shifting feed network according to any one of claims 1-3, wherein the first phase-shifting circuit board is connected to a first support plate, two ends of the first support plate are respectively provided with a line card, and the line card is provided with a cable slot.
5. The multi-frequency fusion phase-shifting feed network according to claim 4, wherein the end of the first support plate is provided with a step portion, and the line card is arranged at the step portion.
6. The multi-frequency fusion phase-shifting feed network according to any one of claims 1-3, wherein a plurality of the phase-shifting circuit boards are stacked up and down, and two adjacent phase-shifting circuit boards are connected by a support member.
7. The multi-frequency fusion phase-shifting feed network according to claim 4, wherein the sliding assembly comprises a coupling sliding piece and a rotating shaft, the rotating shaft sequentially penetrates through one end of the coupling sliding piece and the phase-shifting circuit board, the end of the rotating shaft penetrating through the phase-shifting circuit board is detachably connected with a fastener, the coupling sliding piece is rotatably connected to the rotating shaft, and the rotating shaft and the phase-shifting circuit board are integrally and fixedly connected through the fastener.
8. The multi-frequency fusion phase-shifting feed network according to claim 7, wherein the fastening member is a fastening nut, and the part of the rotating shaft penetrating out of the phase-shifting circuit board is provided with an external thread matched with the fastening nut; and one side of the fastening nut, which faces the phase-shifting circuit board, is provided with an elastic arm.
9. The multi-frequency fusion phase-shifting feed network according to claim 8, wherein a positioning structure is further arranged between the fastening nut and the phase-shifting circuit board; the positioning structure comprises a convex block arranged on one side of the fastening nut, which faces the phase-shifting circuit board, and a positioning hole arranged on the first supporting plate and matched with the convex block.
10. A base station antenna, comprising the multi-frequency fusion phase-shifting feed network of any one of claims 1 to 9, and further comprising a plurality of radiation elements, wherein the plurality of radiation elements are connected to the combiner output ports of the plurality of combiner circuits in a one-to-one correspondence manner.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210002185.4A CN114447611A (en) | 2022-01-04 | 2022-01-04 | Multi-frequency fusion phase-shifting feed network and base station antenna |
| PCT/CN2022/103260 WO2023130690A1 (en) | 2022-01-04 | 2022-07-01 | Multi-frequency fusion phase-shifting feed network and base station antenna |
| EP22918146.6A EP4325665A1 (en) | 2022-01-04 | 2022-07-01 | Multi-frequency fusion phase-shifting feed network and base station antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210002185.4A CN114447611A (en) | 2022-01-04 | 2022-01-04 | Multi-frequency fusion phase-shifting feed network and base station antenna |
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| CN114447611A true CN114447611A (en) | 2022-05-06 |
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| CN202210002185.4A Pending CN114447611A (en) | 2022-01-04 | 2022-01-04 | Multi-frequency fusion phase-shifting feed network and base station antenna |
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| Country | Link |
|---|---|
| EP (1) | EP4325665A1 (en) |
| CN (1) | CN114447611A (en) |
| WO (1) | WO2023130690A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023130690A1 (en) * | 2022-01-04 | 2023-07-13 | 中信科移动通信技术股份有限公司 | Multi-frequency fusion phase-shifting feed network and base station antenna |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101703744B1 (en) * | 2015-06-15 | 2017-02-07 | 주식회사 케이엠더블유 | Multi-line phase shifter in multi-band antenna of mobile communication base transceiver station |
| CN110085953A (en) * | 2019-05-28 | 2019-08-02 | 京信通信技术(广州)有限公司 | Composite network microwave device and antenna |
| CN110661102B (en) * | 2019-09-29 | 2021-05-07 | 华南理工大学 | Phase shifting device and base station antenna |
| CN111585025B (en) * | 2020-05-20 | 2021-08-17 | 中信科移动通信技术股份有限公司 | Phase shifter and base station antenna |
| CN113437455B (en) * | 2021-06-08 | 2022-08-26 | 华南理工大学 | Frequency division phase shifter, feed network and base station antenna |
| CN114447611A (en) * | 2022-01-04 | 2022-05-06 | 中信科移动通信技术股份有限公司 | Multi-frequency fusion phase-shifting feed network and base station antenna |
-
2022
- 2022-01-04 CN CN202210002185.4A patent/CN114447611A/en active Pending
- 2022-07-01 WO PCT/CN2022/103260 patent/WO2023130690A1/en active Application Filing
- 2022-07-01 EP EP22918146.6A patent/EP4325665A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023130690A1 (en) * | 2022-01-04 | 2023-07-13 | 中信科移动通信技术股份有限公司 | Multi-frequency fusion phase-shifting feed network and base station antenna |
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| WO2023130690A1 (en) | 2023-07-13 |
| EP4325665A1 (en) | 2024-02-21 |
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