CN109509939B - FA/D phase shifter - Google Patents
FA/D phase shifter Download PDFInfo
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- CN109509939B CN109509939B CN201811410936.6A CN201811410936A CN109509939B CN 109509939 B CN109509939 B CN 109509939B CN 201811410936 A CN201811410936 A CN 201811410936A CN 109509939 B CN109509939 B CN 109509939B
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- shifting module
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- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000002955 isolation Methods 0.000 claims abstract description 6
- 230000010363 phase shift Effects 0.000 claims abstract description 6
- 238000005253 cladding Methods 0.000 claims description 2
- 230000013011 mating Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003989 dielectric material Substances 0.000 description 4
- XOMKZKJEJBZBJJ-UHFFFAOYSA-N 1,2-dichloro-3-phenylbenzene Chemical compound ClC1=CC=CC(C=2C=CC=CC=2)=C1Cl XOMKZKJEJBZBJJ-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- ZHBBDTRJIVXKEX-UHFFFAOYSA-N 1-chloro-2-(3-chlorophenyl)benzene Chemical compound ClC1=CC=CC(C=2C(=CC=CC=2)Cl)=C1 ZHBBDTRJIVXKEX-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation 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
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses an ultra-wideband FA/D phase shifter, which comprises an outer cavity, wherein the inner cavity of the outer cavity is divided into an upper part and a lower part, a phase shifting module, a transmission line and a medium block are arranged in the upper part and the lower part, the transmission line is connected with the phase shifting module, the medium block is movably arranged on the phase shifting module to form an up-down arrangement FA/D phase shift, and the ultra-wideband FA/D phase shifter is characterized in that the phase shifting module comprises two strip lines with the same width, the strip lines of the phase shifting module are connected in series, and isolation resistors are added to form a phase shifter multiple difference relation. The invention has simple structure, low production cost and stable performance.
Description
Technical Field
The invention relates to the technical field of communication equipment, in particular to a phase shifter in communication equipment.
Background
With the rapid development of mobile communication technology, the requirements on the base station antenna are increasing. For the novel base station antenna applied to the TD-LTE network, multi-antenna diversity, power division multiplexing and beam forming are all important indexes.
The FA/D phase shifter is one of the key components of the TD antenna. The phase shifting function needs to be realized in the FA section and the D section, and the research and development difficulty is high. The conventional FA/D phase shifter has the problems of insufficient performance, higher cost and the like, and the volume 26 and the 3 rd phase shifter for a TD-LTE electrically-controlled intelligent antenna are published in the university of Chongqing post school of medicine, 6 months in 2014, the phase shifter can work in the F section (1880-1920 MHz), the A section (2010-2025 MHz) and the D section (2515-2635 MHz), the phase shifter is of a medium longitudinal sliding type, beneficial attempts are made on the aspect of miniaturization and light weight of the phase shifter, but the ports of the phase shifter are still more, and research personnel are still required to continuously promote and improve the performance and the cost.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide the phase shifter with low manufacturing cost and excellent performance for the FA section (1880-1920 MHz) and the D section (2515-2635 MHz).
The invention adopts the following technical proposal to realize the aim: the ultra-wideband FA/D phase shifter comprises an outer cavity, wherein the inner cavity of the outer cavity is divided into an upper part and a lower part, a phase shifting module, a transmission line and a medium block are arranged in the upper part and the lower part, the transmission line is connected with the phase shifting module, the medium block is movably arranged on the phase shifting module to form an up-down arranged FA/D phase shifting section, and the ultra-wideband FA/D phase shifter is characterized in that the phase shifting module comprises two identical strip lines, the strip lines of the phase shifting module are connected in series, and isolation resistors are added to form a stable amplitude distribution and phase multiple difference relation of the phase shifter.
As a further explanation of the scheme, the outer cavity is internally provided with a PCB, the phase shifting module is arranged on the PCB, and a circuit is arranged on the PCB.
Further, an upper fixing frame and a lower fixing frame are arranged in the outer cavity, the upper fixing frame and the lower fixing frame are buckled to enclose the phase shifting module, and belt wires of the phase shifting module are tightly pressed. So that intermodulation stability and uniformity of the phase shifter are very high.
Further, the strip lines of the phase shifting module are connected in series, and an isolation resistor is added.
Further, the phase shifting modules of the FA/D phase shifters arranged up and down are connected with the circuit of the FA section and the circuit of the D section through the switching of the phase shifting modules and the vertical PCB connecting plates of the PCB board provided with the phase shifting modules. The phase shifter has a simple structure, saves a coaxial cable part and reduces the cost of the phase shifter to a certain extent.
Further, be provided with the jack groove on the PCB board that sets up the phase shift module, the PCB connecting plate will be shifted the module switching from top to bottom through inserting the jack groove, and this PCB connecting plate is T type structure, and the length of jack groove is less than the horizontal limit length of T type structure.
Further, the number of the PCB connecting plates is four, the number of the plugging grooves on each PCB is four, and the circuit ends on the PCB are correspondingly distributed
Further, a built-in combiner is arranged in the phase shifter. The external combiner part is omitted, the ports of the phase shifter are reduced, the limitation of the conventional FA/D phase shifter is broken through to a great extent, and meanwhile, the cost of the phase shifter is greatly reduced.
Further, two strip lines of the phase shifting module are distributed side by side from top to bottom and are spaced from each other; the upper end side and the lower end side of the medium block are respectively provided with a bent edge, and the bent edge is movably coated and matched with the edge of the phase shifting module, so that the medium block can move along the axial direction of the strip line.
Further, the phase shifter adopts a series circuit structure, and a phase shift multiple difference relation is formed according to different numbers of the branches.
The beneficial effects achieved by adopting the technical proposal of the invention are as follows:
1. the phase shifter mainly comprises the outer cavity, the phase shifting module arranged in the outer cavity, the outer frame, the transmission line and the medium sliding block, and circuits of the FA section and the D section are connected through the PCB arranged in the outer cavity, so that the structure is optimized, meanwhile, a cable part is omitted, and the cost of the phase shifter is reduced to a certain extent.
2. The transmission line part of the phase shifter comprises the built-in combiner, so that the original external combiner is directly omitted, meanwhile, the ports of the phase shifter are reduced, and the cost of the phase shifter is greatly reduced.
3. The dielectric part of the phase shifter is made of low-cost dielectric materials, so that the cost is reduced to a certain extent.
4. The phase shifter adopts an outer frame to surround the phase shifting module and is tightly pressed with a strip line, so that intermodulation stability and consistency of the phase shifter are very high.
5. The invention adopts the strip line of the phase shifting module in a serial mode and is added with an isolation resistor; not only can the cost be reduced, the volume be reduced, the structure be optimized, but also the performance of the phase shifter can be optimized.
Drawings
Fig. 1 is a schematic view showing an exploded structure of the present invention.
Fig. 2 shows a front view of the present invention.
Fig. 3 shows a top view of the present invention.
Fig. 4 shows a side view of the invention.
Reference numerals illustrate: 1. the device comprises a dielectric block 2, a fixed frame 2-1, an upper fixed frame 2-2, a lower fixed frame 3, a pull rod 4, a phase shifting module (with wires) 5, a PCB 6, an outer cavity 6-1, an upper FA phase shifter 6-2, a lower D phase shifter 7, a PCB connecting plate 8, a circuit 9 and a plugging slot.
Detailed Description
The present technical solution is described in detail below with reference to specific embodiments.
As shown in fig. 1-4, the present invention is an FA/D phase shifter, which comprises an outer cavity 6, wherein the outer cavity 6 is divided into an upper layer and a lower layer, the upper layer is an FA phase shifter 6-1, the lower layer is a D phase shifter 6-2, the installation positions of the upper layer and the lower layer can be interchanged, the upper layer and the lower layer are respectively provided with a phase shifting module 4, a transmission line and a dielectric block 1, the transmission line is connected with the phase shifting module 4, the dielectric blocks 1 are respectively and movably arranged on the phase shifting module in the upper and the lower directions of the phase shifting module, the phase shifting module 4 adopts a series connection mode, two identical strip lines are connected in series, the two strip lines are distributed side by side from top to bottom, have intervals between each other, and are provided with isolation resistors. The outer cavity is internally provided with the PCB 5, and the strip lines of the phase shifting module 4 are arranged on the PCB 5, so that the cost of the phase shifter can be greatly reduced.
The upper layer and the lower layer of the outer cavity 6 are respectively provided with an outer frame 2, the outer frames 2 are upper and lower fixed frame structures 2-1 and 2-2 which are buckled up and down, the phase shifting module 4 is buckled in the upper and lower fixed frames (2-1 and 2-2), the outer frames 2 surround the phase shifting module 4, and belt wires of the phase shifting module 4 are tightly pressed, so that intermodulation stability and consistency of the phase shifter are very high. The two identical strip lines of the phase shifting module are distributed up and down and are spaced from each other, the upper end side and the lower end side of the medium block 1 are respectively provided with a bent edge which is in movable cladding fit with the edge of the phase shifting module, the upper and lower fixed frames (2-1 and 2-2) are also provided with sliding grooves, meanwhile, the upper and lower layers are respectively provided with a pull rod extending to the outer end of the outer cavity 1 to form an upper pull rod and a lower pull rod, and the end connecting directions of the two pull rods are horizontally oriented and are opposite, so that the two pull rods cannot influence each other; the end of the pull rod is connected with the end of the upper and lower dielectric plates, and the dielectric block and the pull rod slide in the sliding groove, so that the dielectric block 1 can move along the axial direction of the belt line. Two mediums with different thicknesses are adopted at the positions of the medium block 1 corresponding to the two strip lines, so that the phase multiple difference relation of the phase shifter is ensured to a certain extent; the dielectric block 1 is made of low-cost dielectric materials, so that the cost is reduced to a certain extent; the upper end side and the lower end side of the medium block are respectively provided with a bent edge, and the bent edge is movably coated and matched with the edge of the phase shifting module, so that the medium block 1 can move along the axial direction of the strip line.
Meanwhile, a built-in combiner is arranged in the phase shifter. The external combiner part is omitted, the ports of the phase shifter are reduced, the limitation of the conventional FA/D phase shifter is broken through to a great extent, and meanwhile, the cost of the phase shifter is greatly reduced.
As shown in fig. 1, the phase shift modules of the FA/D phase shifters arranged up and down are connected to a PCB connection board 7 in a direction perpendicular to a PCB board 5 provided with the phase shift modules, and the PCB connection board 7 is provided with a connection circuit for connecting the FA section and the D section of the circuit 8. The mode has simple and compact structure, saves the coaxial cable part and reduces the cost of the phase shifter to a certain extent. The PCB board 5 that sets up and shift the module is provided with jack groove 9, and PCB connecting plate 7 will shift the module switching from top to bottom through inserting jack groove 9, and this PCB connecting plate 7 is T type structure, and the length of jack groove 9 is less than the horizontal limit length of T type structure, makes PCB connecting plate 7 can block two PCB boards that hold up the upper and lower setting and be connected with the circuit. The number of the PCB connecting plates 7 is four, the number of the plugging grooves 9 on each PCB 5 is four, and the circuit ends on the PCBs 5 are correspondingly distributed.
Compared with the prior art, the phase shifting part of the phase shifter is formed by two identical strip lines 4, so that the phase shifter multiple difference relation is formed, the size of the phase shifter can be reduced to a great extent, the thickness of a medium block is ensured, and the strength of the phase shifter is enhanced; the dielectric part of the phase shifter adopts two dielectrics with different thicknesses, so that the phase multiple difference relation of the phase shifter is ensured to a certain extent, and the dielectric block adopts low-cost dielectric materials, so that the cost is reduced to a certain extent; the phase shifter adopts an outer frame to surround the phase shifting module and is tightly pressed with the strip line 4, so that the intermodulation stability and consistency of the phase shifter are very high; the design of the phase shifter adopts an integrated phase shifter, and is suitable for antennas with 5 units and more; compared with the phase shifters of the same type, the phase shifter has smaller overall design size, and can ensure a low-cost scheme to a certain extent; in the aspect of overall design, the adopted PCB is a low-cost plate, so that the cost of the phase shifter is greatly reduced, and experimental data show that the phase shifting module comprises two identical strip lines, the strip lines of the phase shifting module adopt a serial connection mode and a PCB connecting plate structure mode, so that the product performance can be effectively improved, the cost can be reduced, the volume can be reduced, and the structure can be optimized.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present invention.
Claims (5)
1. The ultra-wideband FA/D phase shifter comprises an outer cavity, wherein the inner cavity of the outer cavity is divided into an upper part and a lower part, phase shifting modules, transmission lines and medium blocks are arranged in the upper part and the lower part, the transmission lines are connected with the phase shifting modules, the medium blocks are movably arranged on the phase shifting modules to form FA/D phase shifting which is distributed up and down, the ultra-wideband FA/D phase shifter is characterized in that the phase shifting modules comprise two strip lines with the same width, the strip lines of the phase shifting modules are connected in series, the two strip lines are distributed side by side from top to bottom and are spaced from each other, and isolation resistors are added to form a phase shifter multiple difference relation;
the outer cavity is internally provided with a PCB, the strip lines of the phase shifting module are arranged on the PCB, and the PCB is provided with a circuit;
an upper fixing frame and a lower fixing frame are further arranged in the outer cavity, the upper fixing frame and the lower fixing frame are buckled to enclose the phase shifting module, and belt wires of the phase shifting module are tightly pressed;
the phase shifting modules of the FA/D phase shifters arranged up and down are connected with a PCB connecting plate in the vertical direction of a PCB provided with the phase shifting modules, and a connecting circuit is arranged on the PCB connecting plate and is used for connecting circuits of the FA section and the D section;
the PCB provided with the phase shifting module is provided with inserting grooves, the PCB connecting plate is inserted into the inserting grooves to transfer the upper phase shifting module and the lower phase shifting module, the PCB connecting plate is of a T-shaped structure, and the length of the inserting grooves is smaller than the length of the transverse edges of the T-shaped structure, so that the PCB connecting plate can clamp and hold the two PCB arranged up and down and is connected through a circuit;
the upper end side and the lower end side of the medium block are respectively provided with a bent edge, the bent edge is in movable cladding fit with the edge of the phase shifting module, simultaneously, the upper layer and the lower layer of the inner cavity of the outer cavity are respectively provided with a pull rod extending to the outside to form an upper pull rod and a lower pull rod, the end connecting directions of the two pull rods are all in opposite directions, the end parts of the pull rods are connected with the end parts of the medium plate, the medium block can move along the axial direction of the strip lines, and two mediums with different thicknesses are adopted at the positions of the medium block corresponding to the two strip lines.
2. The FA/D phase shifter of claim 1, wherein the number of PCB connector boards is four, and the number of mating grooves on each PCB board is four, and the circuit terminals on the PCB boards are correspondingly distributed.
3. The FA/D phase shifter of claim 1 wherein a built-in combiner is provided within the phase shifter.
4. The FA/D phase shifter of claim 1 wherein the two strip lines of the phase shifting module are arranged side by side from top to bottom with a spacing therebetween; the phase shifter adopts a series circuit structure, and forms a phase shift multiple difference relation according to different numbers of branches.
5. The FA/D phase shifter of claim 1, wherein the FA phase shifter and the D phase shifter are disposed in an upper layer and a lower layer, respectively, or in alternate positions, in the outer cavity interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811410936.6A CN109509939B (en) | 2018-11-24 | 2018-11-24 | FA/D phase shifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811410936.6A CN109509939B (en) | 2018-11-24 | 2018-11-24 | FA/D phase shifter |
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| Publication Number | Publication Date |
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| CN109509939A CN109509939A (en) | 2019-03-22 |
| CN109509939B true CN109509939B (en) | 2024-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811410936.6A Active CN109509939B (en) | 2018-11-24 | 2018-11-24 | FA/D phase shifter |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112652869A (en) * | 2019-10-10 | 2021-04-13 | 中兴通讯股份有限公司 | Phase shifter, electrically tunable antenna, network equipment and phase shifter manufacturing method |
| CN212542636U (en) * | 2020-08-12 | 2021-02-12 | 昆山恩电开通信设备有限公司 | High-performance cavity phase shifter applied to 5G system |
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2018
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