CN106972271B - Phase shifter - Google Patents
Phase shifter Download PDFInfo
- Publication number
- CN106972271B CN106972271B CN201710363652.5A CN201710363652A CN106972271B CN 106972271 B CN106972271 B CN 106972271B CN 201710363652 A CN201710363652 A CN 201710363652A CN 106972271 B CN106972271 B CN 106972271B
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- phase shifter
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- cavity body
- connecting part
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- 239000002184 metal Substances 0.000 claims abstract description 43
- 238000003466 welding Methods 0.000 claims abstract description 24
- 239000004020 conductor Substances 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 abstract description 7
- NMWSKOLWZZWHPL-UHFFFAOYSA-N 3-chlorobiphenyl Chemical compound ClC1=CC=CC(C=2C=CC=CC=2)=C1 NMWSKOLWZZWHPL-UHFFFAOYSA-N 0.000 description 9
- 101001082832 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) Pyruvate carboxylase 2 Proteins 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000010363 phase shift Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
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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
- H01Q3/32—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 mechanical 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
- H01P1/18—Phase-shifters
Landscapes
- Details Of Aerials (AREA)
- Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
Abstract
The present invention provides a phase shifter comprising: metal cavity, PCB board and coaxial cable. The metal cavity comprises an integrally formed cavity body and a connecting part; the cavity body comprises a bottom wall, a pair of side walls and a top wall connected with the side walls in a bridging mode. At least one connecting part is arranged on the outer side of at least one side wall of the cavity body, and a semicircular groove with an upward or downward opening is arranged on the connecting part. The outer conductor of the coaxial cable is welded to the inner wall of the semicircular groove, and the inner conductor is welded to the PCB. According to the phase shifter, the metal cavity is integrally formed, the semicircular groove is formed in the connecting part, the outer conductor of the coaxial cable is welded to the inner wall of the semicircular groove, and the inner conductor is welded to the PCB, so that the problem of connection failure between the coaxial cable and the semicircular groove is avoided, and the consistency and stability of the phase shifter performance are greatly improved. The semicircular arc groove is opened upwards or downwards, so that the effective matching of the connecting part and the welding equipment is facilitated, the welding is realized rapidly and conveniently, and the installation procedure and time are greatly reduced.
Description
Technical Field
The invention relates to the field of mobile communication base station antennas, in particular to a phase shifter.
Background
With the rapid development of communication technology, the application of the multi-frequency electric tuning antenna of the base station is more and more, in the foreseeable future, the multi-frequency electric tuning antenna and the limiting antenna become important development directions of the base station antenna, and the performance of the phase shifter serving as one of key components of the electric tuning antenna determines the reliability and the stability of the multi-frequency electric tuning antenna.
In the prior art, coaxial cables in cavity type phase shifters are usually connected with a phase shifter shell (metal cavity) through a connecting block, the coaxial cables are firstly connected on the connecting block, the connecting block is connected with the phase shifter shell through bolts, and in the connecting mode, stress failure occurs easily to a threaded assembly part in the production assembly process, the structural strength can be weakened and changed, slipping occurs easily to the threaded assembly part, the connection between the connecting block and the phase shifter shell is loose, unstable functions of the phase shifter are caused, and the electric performance index of a corresponding communication network is seriously affected.
Disclosure of Invention
The invention aims to provide a phase shifter, which can ensure firm connection between a coaxial cable and a metal cavity, has a simple installation mode and greatly reduces installation procedures and time.
The technical scheme provided by the invention is as follows: a phase shifter, comprising: the metal cavity comprises an integrally formed cavity body and a connecting part; the cavity body comprises a bottom wall, a pair of side walls and a top wall, wherein the side walls are formed by extending upwards along two sides of the lengthwise direction of the bottom wall, and the top wall is bridged on the pair of side walls; the connecting part is positioned at the outer side of at least one side wall of the cavity body, and a semicircular groove with an upward or downward opening is arranged on the connecting part; the PCB is arranged in the cavity body; and the outer conductor of the coaxial cable is welded to the inner wall of the semicircular groove, and the inner conductor is welded to the PCB.
Preferably, the cavity body is provided with a cavity for mounting the PCB, the top of the connecting portion is lower than the top of the cavity, and the bottom of the connecting portion is higher than the bottom of the cavity.
Preferably, the cavity body is internally provided with at least two independent cavities for the installation of the PCB, and each independent cavity is arranged up and down in the cavity body; the connecting part is arranged on the outer side of at least one side wall corresponding to each cavity; the connecting parts are arranged in parallel.
Preferably, the openings of the plurality of semicircular grooves positioned outside the same side wall are arranged in the same direction or in opposite directions.
Preferably, the openings of the plurality of semicircular grooves located outside different side walls are arranged in the same direction or in opposite directions.
Preferably, the cavity body is provided with two independent cavities, and the connecting parts are arranged on the outer side of at least one side wall corresponding to the two independent cavities.
Preferably, a space is arranged between the two connecting parts positioned at the outer side of the same side wall, and the openings of the semicircular grooves on the two connecting parts are arranged in the same direction or in opposite directions; the top of the connecting part is lower than the top of the corresponding independent chamber, and the bottom of the connecting part is higher than the bottom of the corresponding independent chamber.
Preferably, two connecting parts located at the outer side of the same side wall are connected, openings of the semicircular grooves on the two connecting parts are arranged in opposite directions, the top of the connecting part located at the upper part is lower than the top wall of the cavity body, and the bottom of the connecting part located at the lower part is higher than the bottom wall of the cavity body.
Preferably, the inner diameter of the semicircular groove is 3.6mm-3.9mm.
Preferably, the semicircular groove is provided with a mounting hole penetrating through the side wall and allowing the inner conductor of the coaxial cable to pass through, and the top wall or the bottom wall is provided with a welding hole at a position corresponding to the mounting hole.
According to the technical scheme, the invention has the advantages and positive effects that:
1. according to the invention, the metal cavity is integrally formed, the semicircular groove is arranged at the connecting part, the outer conductor of the coaxial cable is welded to the inner wall of the semicircular groove, and the inner conductor is welded to the PCB, so that the problem of connection failure between the coaxial cable and the semicircular groove is avoided, and the consistency and stability of the performance of the phase shifter are greatly improved;
2. in the invention, the opening of the semicircular groove is upward or downward, which is beneficial to the effective matching of the connecting part and the welding equipment (high-frequency induction coil), so that the welding of the coaxial cable and the semicircular groove is realized quickly and conveniently, and the installation procedure and time are greatly reduced. And the welding equipment directly heats the semicircular groove on the connecting part, and the semicircular groove is not required to be in contact with the coaxial cable, so that the coaxial cable can be effectively protected and prevented from being damaged. 3. According to the invention, the semicircular groove can clamp the coaxial cable therein, so that not only can the mutual interference between a plurality of coaxial cables in the same group be avoided, but also the degree of fit between the coaxial cables and the inner wall of the semicircular groove can be ensured; and the inner diameter of the semicircular arc groove is similar to the outer diameter of the coaxial cable, so that the problem of high heat loss during welding is avoided, and the welding performance of the coaxial cable and the metal cavity is stable and reliable.
Drawings
Fig. 1 is a schematic diagram of a phase shifter according to embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of a metal cavity according to embodiment 1 of the present invention.
Fig. 3 is a sectional view of a phase shifter according to embodiment 1 of the present invention.
Fig. 4 is a schematic diagram of the structure of the upper medium shift sheet, the PCB board and the lower medium shift sheet according to embodiment 1 of the present invention.
Fig. 5 is a schematic diagram of the combination of the upper dielectric phase shifter, the PCB board and the lower dielectric phase shifter in embodiment 1 of the present invention.
Fig. 6 is a schematic diagram of the structure of the combination of the upper dielectric phase shifter, the PCB board and the lower dielectric phase shifter inserted into the metal cavity according to embodiment 1 of the present invention.
Fig. 7 is a schematic diagram of a combination structure of a metal cavity and an upper dielectric phase shifter, a PCB board and a lower dielectric phase shifter for fixing a positioning column according to embodiment 1 of the present invention.
Fig. 8 is a schematic structural diagram of a coaxial cable according to embodiment 1 of the present invention mounted in a metal cavity.
Fig. 9 is a sectional view of a phase shifter according to embodiment 2 of the present invention.
Fig. 10 is a cross-sectional view of a phase shifter according to embodiment 3 of the present invention.
Fig. 11 is a cross-sectional view of a phase shifter according to embodiment 4 of the present invention.
Fig. 12 is a cross-sectional view of a phase shifter according to embodiment 5 of the present invention.
Fig. 13 is a cross-sectional view of a phase shifter according to embodiment 6 of the present invention.
Fig. 14 is a cross-sectional view of a phase shifter according to embodiment 7 of the present invention.
Fig. 15 is a cross-sectional view of a phase shifter according to embodiment 8 of the present invention.
Wherein reference numerals are as follows: 100. a phase shifter; 1. a metal cavity; 11. a cavity body; 10. Top wall; 1101. welding holes; 1102. a positioning column matching hole; 111. a sidewall; 1111. a clamping groove; 112. a bottom wall; 113. A partition plate; 115. an independent chamber; 12. a connection part; 121. a semicircular arc groove; 1211. a mounting hole; 2. A PCB board; 21. a sliding groove; 3. a coaxial cable; 4. moving the medium to a photo; 41. moving the photo on the medium; 411. a snap fit hole; 42. moving the photo under the medium; 421. a buckle; 5. A pull rod; 6. and positioning columns.
Detailed Description
Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It will be understood that the invention is capable of various modifications in various embodiments, all without departing from the scope of the invention, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the invention.
For the purpose of further illustrating the principles and structure of the present invention, preferred embodiments of the invention will now be described in detail with reference to the accompanying drawings.
Example 1
Referring to fig. 1 to 3, the present invention provides a phase shifter 100, which includes a metal cavity 1, a pcb board 2, a coaxial cable 3, a dielectric shift sheet 4, a pull rod 5 and a positioning column 6.
The metal cavity 1 comprises a cavity body 11 and a connecting part 12, and the cavity body 11 and the connecting part 12 are integrally formed. The chamber body 11 includes a bottom wall 112, a pair of side walls 111 formed to extend upward along both sides of the bottom wall 112 in the longitudinal direction, and a top wall 110 bridging the pair of side walls 111. The two transverse ends of the metal cavity 1 are opened to be provided with a PCB 2, a coaxial cable 3, a dielectric phase shifter 4 and a pull rod 5.
In this embodiment, the chamber body 11 is divided into two independent chambers 115 in the longitudinal direction by a partition 113. Corresponding to each independent chamber, a clamping groove 1111 is respectively arranged on the inner sides of the pair of side walls 111 for clamping the PCB 2.
As seen in the view direction of fig. 3, two connecting portions 12 are disposed on the outer side of the sidewall 111 on the right side, the two connecting portions 12 are disposed in parallel, and are arranged at an upper-lower interval, and the two connecting portions respectively correspond to two independent chambers. 12 are lower at the top than the top of the upper independent chamber 115, the bottom is higher than the bottom of the independent chamber 115, the top of the lower connecting portion 12 is lower than the top of the lower independent chamber 115, and the bottom is higher than the bottom of the independent chamber 115. In this embodiment, the openings of the semicircular grooves 121 are oppositely arranged, the semicircular groove opening of the upper connecting portion is upward, and the semicircular groove opening of the lower connecting portion is downward. The semicircular groove 121 is provided with a mounting hole 1211, and the mounting hole 1211 penetrates through the side wall 111 for the coaxial cable 3 to pass through. Welding holes 1101 are formed in the top wall 110 and the bottom wall 112 at positions corresponding to the mounting holes 1211, and workers can weld the inner conductor of the coaxial cable 3 with the PCB 2 through the welding holes 1101.
The semicircular groove 121 has an inner diameter of 3.6mm to 3.9mm. The general outer diameter of the coaxial cable 3 is 3.55mm, and in order to facilitate the clamping of the coaxial cable 3 into the semicircular groove 121, the inner diameter of the semicircular groove 121 is slightly larger than the outer diameter of the coaxial cable 3. The coaxial cable 3 is conveniently arranged in the semicircular arc groove 121, and the inner diameter of the semicircular arc groove 121 is not too large in order to enable the heat dissipation speed to be low during welding, so that the inner diameter of the semicircular arc groove 121 is 3.6mm-3.9mm.
A circuit (not numbered) is provided on the PCB board 2. The PCB 2 is also provided with a sliding groove 21 and a positioning column matching hole 22.
The outer conductor of the coaxial cable 3 is soldered to the inner wall of the semicircular groove 121 and the inner conductor is soldered to the land of the PCB board 2.
The dielectric phase shift sheet 4 includes an upper dielectric phase shift sheet 41 and a lower dielectric phase shift sheet 42. The upper medium phase shifter 41 is provided with a buckle matching hole 411, and the lower medium phase shifter 42 is provided with a buckle 421. The snap 421 passes through the fitting hole 421 and is connected with the snap fitting hole 411 to connect the upper dielectric phase shifter 41 and the lower dielectric phase shifter 42 with the PCB board 2.
The pull rod 5 is arranged on the upper medium phase shifter 41, and the pull rod 5 drives the medium phase shifter 4 to move in the sliding groove 21 in the PCB 2, so that the phase shifting of the phase shifter is realized.
The positioning column 6 passes through the positioning column matching hole 22 and the positioning column matching hole 1102 on the top wall 110 of the cavity body 11 to fix the PCB 2 and the metal cavity 1.
Referring to fig. 4 to 8, in the process of installation, the pull rod 5 is connected to the upper medium phase shifter 41, the buckle 421 on the lower medium phase shifter 42 passes through the sliding groove 21 on the PCB board and then cooperates with the buckle cooperation hole 411 on the upper medium phase shifter 41, so that the upper medium phase shifter 41 and the lower medium phase shifter 42 are connected and combined with the PCB board 2. Then the upper medium phase shifter 41, the lower medium phase shifter 42 and the PCB 2 are assembled into the metal cavity 1. At this time, the positioning posts 6 are matched with the positioning post matching holes 22 of the PCB 2 and the positioning post matching holes 1102 on the top wall 110 of the cavity body 11 to fix the PCB 2 and the metal cavity 1.
The coaxial cable 3 is inserted into the mounting hole 1211, bent by 90 degrees, the outer conductor of the coaxial cable 3 is soldered into the semicircular groove 121, and the inner conductor of the coaxial cable 3 is soldered onto the pad of the PCB board 2.
In this embodiment, during welding, the heating source can be placed between upper and lower two semicircle grooves, can heat upper and lower semicircle grooves simultaneously, welds two coaxial cable about simultaneously, the effectual welding efficiency that has improved.
Example 2
Referring to fig. 9, the metal cavity 1a of the present embodiment is different from the metal cavity 1 of the first embodiment in that: in this embodiment, two connecting portions 12a corresponding to two independent chambers 115a are disposed on the outer sides of a pair of sidewalls 111a of the metal cavity 1a, the openings of the semicircular arc grooves 121a on the two connecting portions 12a located on the outer sides of the same sidewall 111a are oppositely disposed, the semicircular arc groove opening of the connecting portion located above is upward, and the semicircular arc groove opening of the connecting portion located below is downward.
In this embodiment, during welding, the heating source can be placed between upper and lower two semicircle grooves, can heat upper and lower semicircle grooves simultaneously, welds two coaxial cable about simultaneously, the effectual welding efficiency that has improved.
Example 3
Referring to fig. 10, the metal cavity 1b of the present embodiment is different from the metal cavity 1 of the first embodiment described above in that: in this embodiment, two connecting portions 12b corresponding to the two independent chambers 115b are disposed on the outer side of the right side wall 111b of the metal cavity 1b, and the openings of the semicircular arc grooves 121b on the two connecting portions 12b are all upward.
Example 4
Referring to fig. 11, the difference between the metal cavity 1c of the present embodiment and the metal cavity 1b of the above-mentioned embodiment 3 is that: in this embodiment, two connection portions 12c corresponding to two independent chambers 115c are provided on the outer sides of a pair of side walls 111c of the metal cavity 1c, and the openings of the semicircular arc grooves 121c on the two connection portions 12c located on the outer sides of the same side wall 111c are all upward.
Example 5
Referring to fig. 12, the metal cavity 1d of the present embodiment is different from the metal cavity 1 of the first embodiment described above in that: in the present embodiment, the metal cavity 1d has only one cavity 115d, which is directly surrounded by the bottom wall 112d, the pair of side walls 111d and the top wall 110 d. The outer connecting portion 12d of the right side wall 111d is provided with a semicircular groove 121d having an opening facing upward.
Example 6
Referring to fig. 13, the difference between the metal cavity 1e of the present embodiment and the metal cavity 1d of the above-mentioned embodiment 5 is that: in this embodiment, a connecting portion 12e is disposed on the outer side of a pair of side walls 111e of the metal cavity 1e, and the openings of the semicircular grooves on the two connecting portions 12e are all upward.
Example 7
Referring to fig. 14, the metal cavity 1f of the present embodiment is different from the metal cavity 1 of the first embodiment described above in that: in this embodiment, two connecting portions 12f corresponding to two independent chambers 115f are disposed on the outer side of the right side wall 111f of the metal cavity 1f, the openings of the semicircular grooves on the two connecting portions 12f are disposed opposite to each other, the semicircular groove opening of the upper connecting portion is downward, and the semicircular groove opening of the lower connecting portion is upward.
Example 8
Referring to fig. 15, the metal cavity 1g of the present embodiment is different from the metal cavity 1f of the above-described embodiment 7 in that: in this embodiment, two connecting portions 12g corresponding to two independent chambers 115g are provided on the outer sides of a pair of side walls 111g of the metal cavity 1g, openings of semicircular arc grooves 121g on the two connecting portions 12g located on the outer sides of the same side wall 111g are provided in opposite directions, the semicircular arc groove opening of the connecting portion located above is downward, and the semicircular arc groove opening of the connecting portion located below is upward.
According to the technical scheme, the invention has the advantages and positive effects that:
1. according to the invention, the metal cavity is integrally formed, the semicircular groove is arranged at the connecting part, the outer conductor of the coaxial cable is welded to the inner wall of the semicircular groove, and the inner conductor is welded to the PCB, so that the problem of connection failure between the coaxial cable and the semicircular groove is avoided, and the consistency and stability of the performance of the phase shifter are greatly improved;
2. in the invention, the opening of the semicircular groove is upward or downward, which is beneficial to the effective matching of the connecting part and the welding equipment (high-frequency induction coil), so that the welding of the coaxial cable and the semicircular groove is realized quickly and conveniently, and the installation procedure and time are greatly reduced. And the welding equipment directly heats the semicircular groove on the connecting part, and the semicircular groove is not required to be in contact with the coaxial cable, so that the coaxial cable can be effectively protected and prevented from being damaged. 3. According to the invention, the semicircular groove can clamp the coaxial cable therein, so that not only can the mutual interference between a plurality of coaxial cables in the same group be avoided, but also the degree of fit between the coaxial cables and the inner wall of the semicircular groove can be ensured; and the inner diameter of the semicircular arc groove is similar to the outer diameter of the coaxial cable, so that the problem of high heat loss during welding is avoided, and the welding performance of the coaxial cable and the metal cavity is stable and reliable.
The foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by applying the descriptions and the drawings of the present invention are included in the scope of the present invention.
Claims (8)
1. A phase shifter, comprising:
the metal cavity comprises an integrally formed cavity body and a connecting part; the cavity body comprises a bottom wall, a pair of side walls and a top wall, wherein the side walls are formed by extending upwards along two sides of the lengthwise direction of the bottom wall, and the top wall is bridged on the pair of side walls; the connecting part is positioned at the outer side of at least one side wall of the cavity body, and a semicircular groove with an upward or downward opening is arranged on the connecting part; the inner diameter of the semicircular groove is 3.6mm-3.9mm;
the PCB is arranged in the cavity body;
the coaxial cable, semicircle groove department sets up the link up the lateral wall and supplies the mounting hole that the inner conductor of coaxial cable passed through, roof or on the diapire corresponds the position department of mounting hole is equipped with the welding hole, coaxial cable's outer conductor welding to semicircle groove's inner wall, the inner conductor welding to the PCB board.
2. The phase shifter of claim 1, wherein the cavity body has a cavity for mounting the PCB board, the top of the connection portion is lower than the top of the cavity, and the bottom of the connection portion is higher than the bottom of the cavity.
3. The phase shifter according to claim 1, wherein the cavity body has at least two independent chambers for mounting the PCB board therein, each independent chamber being disposed up and down in the cavity body;
the connecting part is arranged on the outer side of at least one side wall corresponding to each cavity; the connecting parts are arranged in parallel.
4. A phase shifter according to claim 3, wherein the openings of the plurality of semicircular grooves located outside the same side wall are disposed in the same direction or in opposite directions.
5. A phase shifter according to claim 3, wherein the openings of the plurality of semicircular grooves located outside the different side walls are disposed in the same direction or in opposite directions.
6. A phase shifter according to claim 3, wherein the cavity body has two independent chambers therein, and at least one of the outer sides of the side walls is provided with the connecting portion corresponding to the two independent chambers.
7. The phase shifter according to claim 6, wherein a space is provided between two of the connection portions located outside the same side wall, and openings of the semicircular grooves on the two connection portions are arranged in the same direction or in opposite directions; the top of the connecting part is lower than the top of the corresponding independent chamber, and the bottom of the connecting part is higher than the bottom of the corresponding independent chamber.
8. The phase shifter according to claim 6, wherein two of the connection portions located outside the same side wall are connected, openings of the semicircular grooves in the two connection portions are disposed in opposition, a top of the connection portion located at an upper portion is lower than a top wall of the cavity body, and a bottom of the connection portion located at a lower portion is higher than a bottom wall of the cavity body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710363652.5A CN106972271B (en) | 2017-05-22 | 2017-05-22 | Phase shifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710363652.5A CN106972271B (en) | 2017-05-22 | 2017-05-22 | Phase shifter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106972271A CN106972271A (en) | 2017-07-21 |
| CN106972271B true CN106972271B (en) | 2023-09-19 |
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| CN201710363652.5A Active CN106972271B (en) | 2017-05-22 | 2017-05-22 | Phase shifter |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107634290A (en) * | 2017-08-28 | 2018-01-26 | 广州司南天线设计研究所有限公司 | A kind of new coupling phase shifter |
| CN109473755B (en) * | 2018-12-29 | 2021-11-05 | 京信通信技术(广州)有限公司 | Microwave device cavity, preparation method thereof and microwave device |
| CN112436243A (en) * | 2019-08-26 | 2021-03-02 | 广东博纬通信科技有限公司 | Cavity type phase shifter |
| CN112436244B (en) * | 2019-08-26 | 2022-10-28 | 广东博纬通信科技有限公司 | Cavity type phase shifter |
| CN118693487A (en) * | 2023-03-21 | 2024-09-24 | 中兴通讯股份有限公司 | Phase shifter, base station antenna and base station |
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| CN205376693U (en) * | 2015-12-24 | 2016-07-06 | 广东通宇通讯股份有限公司 | A cavity type phase shifter |
| CN105720329A (en) * | 2016-03-23 | 2016-06-29 | 武汉虹信通信技术有限责任公司 | Phase shift for isolating heat transfer between welding point and large heat capacity cavity |
| CN207038732U (en) * | 2017-05-22 | 2018-02-23 | 摩比天线技术（深圳）有限公司 | Phase shifter |
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| Publication number | Publication date |
|---|---|
| CN106972271A (en) | 2017-07-21 |
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