CN117175175A - Axial wrapping type power divider - Google Patents
Axial wrapping type power divider Download PDFInfo
- Publication number
- CN117175175A CN117175175A CN202311376951.4A CN202311376951A CN117175175A CN 117175175 A CN117175175 A CN 117175175A CN 202311376951 A CN202311376951 A CN 202311376951A CN 117175175 A CN117175175 A CN 117175175A
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- China
- Prior art keywords
- cambered surface
- microstrip
- column body
- printed board
- board
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000007704 transition Effects 0.000 claims abstract description 37
- 238000004806 packaging method and process Methods 0.000 claims abstract description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 7
- 238000005476 soldering Methods 0.000 claims description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 6
- 229910052737 gold Inorganic materials 0.000 claims description 6
- 239000010931 gold Substances 0.000 claims description 6
- 239000010409 thin film Substances 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000006866 deterioration Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 239000012212 insulator Substances 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- Waveguides (AREA)
Abstract
The invention discloses an axial wrapping type power divider, which mainly solves the problems of space waste and broadband vertical transition index deterioration caused by power division when multichannel frequency conversion equipment works. The power divider comprises a printed board printed with a microstrip power dividing circuit, a column body formed by combining a small sector cambered surface and a large sector cambered surface which are concentric and opposite, a microstrip transition input board and a microstrip transition output board which are respectively fixed at two ends of the column body and are communicated with the microstrip power dividing circuit on the printed board, and a chord shell for packaging the printed board wrapped on the column body; wherein, the printed board is wrapped on the small fan-shaped cambered surface of the column body. Through the design, the axial wrapping type power divider is low in cost, simple to operate, good in index and wide in application scene.
Description
Technical Field
The invention belongs to the technical field of radio frequency microwave communication, and particularly relates to an axial wrapping type power divider.
Background
In modern microwave communication, miniaturization has been advanced into various aspects of microwave communication. In particular, in the microwave radio frequency field, the requirements of the multichannel receiver and the multichannel transmitter on the size and the weight are also increasing. The stricter technical indexes, smaller size and lighter weight require radio frequency engineers to seek special methods and special processes to realize the technical indexes.
When the multichannel frequency conversion equipment works, local oscillation input signals are required to be independently provided for each channel, but due to the influence of the channels, the local oscillation signals cannot be directly provided for each channel from the same side, and therefore, local oscillation ports are required to be input after the power division at the other side of the channels is vertically transited. This presents two relatively serious problems: firstly, the power division of the signal occupies more space on the other side of the radio frequency microwave surface, so that the utilization rate of a subsequent power supply control part is greatly reduced; meanwhile, the vertical transition is generally represented in the broadband high-frequency characteristic, and loss, in-band fluctuation and standing wave index can be seriously deteriorated, and even abnormal system operation can be caused.
Disclosure of Invention
The invention aims to provide an axial wrapping type power divider, which mainly solves the problems of space waste and broadband vertical transition index deterioration caused by power division when multichannel frequency conversion equipment works.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides an axial wrapping formula merit divides ware, includes printing the microstrip merit divides the printed board of circuit, is formed by the combination of the little sector cambered surface of concentric reverse and big sector cambered surface, is used for wrapping up the cylinder of printing board, is fixed in respectively at the cylinder both ends and microstrip transition input board and microstrip transition output board that the microstrip merit divides the circuit intercommunication on the printed board to and be used for wrapping up the string shell that the printed board of covering on the cylinder carries out encapsulation; wherein, the printed board is wrapped on the small fan-shaped cambered surface of the column body.
Further, in the invention, the printed board adopts a soft base material with wrapping characteristic, the front surface of the printed board is covered with a microstrip power division circuit strip line, and the back surface of the printed board is bare copper; the length L of the printed board corresponds to the axial dimension of the column body, the width W corresponds to the arc length of the small fan-shaped cambered surface of the column body, and the thin film resistor of the microstrip power division circuit is integrated on the microstrip power division circuit strip line.
Further, in the invention, the column body is in a combined form of a small sector cambered surface and a large sector cambered surface which are concentric and opposite, namely, the sectors are concentric and the steps from the two large sector cambered surfaces to the small sector cambered surface are provided with through grooves; the end face of one end of the column body is provided with a first groove in a straight shape, and the first groove is used for soldering tin sintering and installing a microstrip transition input board; and a second groove for soldering tin sintering of the microstrip transition output plate is formed in the end face of the other end of the cylinder.
In the invention, an isolation boss is designed between each path of power division signals corresponding to the microstrip transition output board in the second groove, and is used for isolating each path of power division signals.
Further, in the invention, the two ends of the chord shell are designed into a step sliding bar structure, and the step sliding bar is used for sliding into a through groove from a large sector cambered surface to a small sector cambered surface on the column body.
Further, in the invention, the radius R of the inner wall of the chord shell is larger than the radius R of the small fan-shaped cambered surface of the cylinder, so that a gap exists between the inner wall of the chord shell and the radial dimension of the coated printed board after the chord shell is mounted on the cylinder.
Further, in the invention, the microstrip transition input board and the microstrip transition output board are bridged with the printed board through the gold strap spot welding.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention realizes DC-40 GHz power division output by introducing a thin film circuit process, selecting a substrate capable of being wrapped, integrating a thin film resistor and a thin film printed circuit.
(2) The invention realizes the vertical transition of signals in a limited volume through an axial installation process, and solves the index deterioration introduced by the transition of the traditional insulator.
(3) The isolation boss designed between the power division signals enables the power division signals to be isolated from each other, effectively avoids the coupling phenomenon between each power division signal, and achieves high isolation between the power division signals.
The axial wrapping type power divider is low in cost, simple to operate, good in index and wide in application scene.
Drawings
Fig. 1 is a schematic diagram of a microstrip transition input board mounted on a column in the present invention.
Fig. 2 is a schematic diagram of a microstrip transition output board mounted on a column in the present invention.
FIG. 3 is a schematic view of an end structure of the column according to the present invention.
FIG. 4 is a schematic view of the other end of the column according to the present invention.
Fig. 5 is a schematic diagram of a printed board according to the present invention.
Fig. 6 is a schematic diagram of a microstrip transition input board according to the present invention.
Fig. 7 is a schematic diagram of a microstrip transition output board according to the present invention.
Fig. 8 is a schematic structural view of the chordal housing of the present invention.
Fig. 9 is a schematic diagram of wrapping a printed board and a column in an embodiment of the invention.
FIG. 10 is a schematic diagram of the assembly of the chordal housing and column according to the present invention.
Fig. 11 is a schematic diagram of an application of the present invention in a frequency conversion circuit.
Fig. 12 is a graph of a simulation of the performance of a wrapped power divider of the present invention.
Wherein, the names corresponding to the reference numerals are:
the high-power-supply-voltage-limiting circuit comprises a 1-printed board, a 2-small fan-shaped cambered surface, a 3-large fan-shaped cambered surface, a 4-cylinder, a 5-microstrip transition input board, a 6-microstrip transition output board, a 7-chord shell, an 8-microstrip power-division circuit strip line, a 9-through slot, a 10-first groove, a 11-second groove, a 12-isolation boss, a 13-step slide bar and a 14-gap.
Detailed Description
The invention will be further illustrated by the following description and examples, which include but are not limited to the following examples.
As shown in fig. 1 and fig. 2, the axial wrapping type power divider disclosed by the invention comprises a printed board 1 printed with a microstrip power dividing circuit, a column 4 formed by combining a small sector cambered surface 2 and a large sector cambered surface 3 which are concentric and opposite, a microstrip transition input board 5 and a microstrip transition output board 6 which are respectively fixed at two ends of the column 4 and are communicated with the microstrip power dividing circuit on the printed board 1, and a chord shell 7 for packaging the printed board 1 wrapped on the column 4; wherein, the printed board 1 is wrapped on the small fan-shaped cambered surface 2 of the column body 4. The microstrip transition input board 5 and the microstrip transition output board 6 are bridged with the printed board 1 through the spot welding of the gold strip, so that the transition of the vertical conversion of the power division signals is realized.
As shown in fig. 5, in this embodiment, the printed board 1 is made of a soft base material with wrapping characteristics, and has a front surface covered with a microstrip power division circuit strip line 8 and a back surface made of bare copper. Through electromagnetic simulation design, the front microstrip power division circuit strip line and the back bare copper both adopt gold plating technology, so that good circuit characteristics and solderability are met. The length L of the printed board 1 corresponds to the axial dimension of the column body 4, the width W corresponds to the arc length of the small fan-shaped cambered surface of the column body 4, the thin film resistor of the microstrip power division circuit is integrated on the microstrip power division circuit strip line 8, parasitic parameters introduced by the traditional chip resistor can be avoided, and the working frequency is reduced.
As shown in fig. 3 and 4, the cylinder 4 is in a combination form of a small sector cambered surface 2 and a large sector cambered surface 3 which are concentric and opposite in cambered surface. The cylinder adopts an electrochemical gold plating process, thereby meeting the requirement of excellent weldability. The small fan-shaped cambered surface 2 is used for wrapping the printed board, the corresponding fixture is used for positioning, and the wrapped printed board is sintered on the small fan-shaped cambered surface 2 of the cylinder by soldering tin, as shown in fig. 8 and 9. From the front view of the end face of the column body, through grooves 9 are formed at the step positions from the two large sector cambered surfaces 3 to the small sector cambered surface 2. Correspondingly, as shown in fig. 7, the two ends of the chord shell 7 are designed into a step sliding bar 13 structure, and the step sliding bar 13 is used for sliding into a through groove 9 from the large sector cambered surface 3 to the small sector cambered surface 2 on the column, as shown in fig. 11.
As shown in fig. 1 and 2, a first groove 10 in a shape of a straight line is arranged on one end surface of the column 4, and is used for soldering tin to sinter and mount a microstrip transition input board 5, which is aligned with the center of the input position of the microstrip power division circuit printed board; the other end face of the column body 4 is provided with a second groove 11 for soldering tin sintering of the microstrip transition output board 6. An isolation boss 12 is designed between each path of power division signals corresponding to the microstrip transition output board 6 in the second groove 11 and is used for isolating each path of power division signals. The coupling between each path of power division signals is effectively avoided, and the high isolation between the power division signals is realized.
In this embodiment, the chord shell 7 adopts an electrochemical gold plating process, satisfying excellent solderability. The radius R of the inner wall of the chord shell 7 is larger than the radius R of the small sector cambered surface 2 of the cylinder body so as to ensure that a gap 14 exists between the inner wall of the chord shell 7 and the radial dimension of the coated printed board 1 after the chord shell 7 is installed on the cylinder body 4. The gap 14 has a value of R-R (neglecting the thickness of the microstrip power division circuit printed board), as shown in fig. 10, so that the occurrence of short circuit between the microstrip line and the chord shell 7 is effectively avoided. The size can be calculated through electromagnetic simulation, and the values of R and R are optimized, so that a good circuit effect is ensured. The radial dimension of the outer wall of the chord shell is consistent with the radial dimension of the large sector cambered surface of the column body, meanwhile, the two ends of the chord shell are designed into step structures, and the step sliding strip can slide into a through groove from the large sector cambered surface to the small sector cambered surface on the column body, so that the assembly of the axial wrapping type power divider is completed, and the axial wrapping type power divider is shown in fig. 11.
As shown in fig. 11, an axial wrapping type power divider of the present invention is applied to a four-channel up-down-conversion microwave assembly. The four-channel variable-frequency microwave component requires small structural appearance, consistency of channel amplitude and phase, high performance index and the like due to the specificity. In the traditional design, the local oscillation signal transits to one side of the channel through the insulator after the power of the power supply surface is divided, so that the space structure is greatly wasted, and the performance index is greatly reduced. In space, the power division occupies a large amount of power control space, and typesetting of power control is greatly limited; the occupation of the space of the power control part makes the power control layout very compact, increases the risk of signal crosstalk and reduces the electromagnetic compatibility of the assembly. The vertical transition of the insulator can be marginally feasible within the range of DC-10 GHz, but after the frequency exceeds 10GHz, the vertical transition of the insulator can cause the power fluctuation of broadband signals to be extremely deteriorated, and the port matching is seriously mismatched, particularly when the frequency is more than 20GHz, the components or the system can be seriously disabled. The above problems can be perfectly solved by using an axial wrap-around power divider of the present invention, while the present invention provides excellent performance in the DC-40 GHz frequency range, and the wrap-around power divider of the present invention has a simulation curve as shown in fig. 12.
Through the design, the axial wrapping type power divider disclosed by the invention has the advantages of low cost, simplicity in operation, excellent index, wide application scene and strong practicability, and can be widely popularized.
The above embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but all the insubstantial modifications or color changes made in the main design concept and spirit of the present invention are still consistent with the present invention, and all the technical problems to be solved are included in the scope of the present invention.
Claims (7)
1. The axial wrapping type power divider is characterized by comprising a printed board (1) printed with a microstrip power dividing circuit, a column body (4) formed by combining a small sector cambered surface (2) and a large sector cambered surface (3) which are concentric and opposite, a microstrip transition input board (5) and a microstrip transition output board (6) which are respectively fixed at two ends of the column body (4) and are communicated with the microstrip power dividing circuit on the printed board (1), and a chord shell (7) for packaging the printed board (1) wrapped on the column body (4); the printed board (1) is wrapped on the small fan-shaped cambered surface (2) of the column body (4).
2. The axial wrapping type power divider according to claim 1, wherein the printed board (1) is made of a soft base material with wrapping characteristics, the front surface of the printed board is covered with a microstrip power dividing circuit strip line (8), and the back surface of the printed board is bare copper; the length L of the printed board (1) corresponds to the axial dimension of the column body (4), the width W corresponds to the arc length of the small fan-shaped cambered surface of the column body (4), and the thin film resistor of the microstrip power division circuit is integrated on the microstrip power division circuit strip line (8).
3. The axial wrapping type power divider according to claim 2, wherein the column body (4) is in a combination form of a small sector-shaped cambered surface (2) and a large sector-shaped cambered surface (3) which are concentric and opposite in terms of sector shape, and through grooves (9) are formed at the step positions from the two large sector-shaped cambered surfaces (3) to the small sector-shaped cambered surface (2); a first groove (10) in a straight shape is formed in the end face of one end of the column body (4) and is used for soldering tin sintering and mounting a microstrip transition input board (5); the end face of the other end of the column body (4) is provided with a second groove (11) for soldering tin sintering of the microstrip transition output plate (6).
4. An axial wrap-around power divider according to claim 3, characterized in that an isolation boss (12) is designed between each path of power division signal of the corresponding microstrip transition output board (6) in the second groove (11) for isolating each path of power division signal.
5. The axial wrapping type power divider according to claim 4, wherein two ends of the chord shell (7) are designed into a step sliding bar (13) structure, and the step sliding bar (13) is used for sliding into a through groove (9) from a large sector cambered surface (3) to a small sector cambered surface (2) on the column body.
6. The axial wrapping type power divider according to claim 5, wherein the radius R of the inner wall of the chord shell (7) is larger than the radius R of the small sector cambered surface (2) of the cylinder, so as to ensure that a gap (14) exists between the inner wall of the chord shell (7) and the radial dimension of the wrapped printed board (1) after the chord shell (7) is mounted on the cylinder (4).
7. An axial wrap-around power divider according to claim 6, characterized in that the microstrip transition input board (5) and microstrip transition output board (6) are bridged with the printed board (1) by means of gold strap spot welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311376951.4A CN117175175B (en) | 2023-10-24 | 2023-10-24 | Axial wrapping type power divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311376951.4A CN117175175B (en) | 2023-10-24 | 2023-10-24 | Axial wrapping type power divider |
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| Publication Number | Publication Date |
|---|---|
| CN117175175A true CN117175175A (en) | 2023-12-05 |
| CN117175175B CN117175175B (en) | 2024-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311376951.4A Active CN117175175B (en) | 2023-10-24 | 2023-10-24 | Axial wrapping type power divider |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4163955A (en) * | 1978-01-16 | 1979-08-07 | International Telephone And Telegraph Corporation | Cylindrical mode power divider/combiner with isolation |
| CN103490133A (en) * | 2013-09-18 | 2014-01-01 | 中国电子科技集团公司第四十一研究所 | Micro-strip multi-directional power divider/combiner based on flexible connection |
| CN104466330A (en) * | 2014-11-25 | 2015-03-25 | 陕西黄河集团有限公司 | Microstrip power divider with coaxial cable input into arbitrary paths |
| CN105222857A (en) * | 2014-06-30 | 2016-01-06 | 罗斯蒙特储罐雷达股份公司 | Multichannel guide wave radar level gauge |
| CN110994108A (en) * | 2019-12-30 | 2020-04-10 | 华南理工大学 | Four-way arbitrary power division ratio Gysel type power divider/combiner |
| CN111048880A (en) * | 2020-02-12 | 2020-04-21 | 南京长江电子信息产业集团有限公司 | Power divider |
| KR20220168105A (en) * | 2021-06-15 | 2022-12-22 | 서강대학교산학협력단 | Power divider and combiner |
| CN115663430A (en) * | 2022-12-28 | 2023-01-31 | 成都世源频控技术股份有限公司 | Spiral winding shaft type microstrip filter and preparation method thereof |
-
2023
- 2023-10-24 CN CN202311376951.4A patent/CN117175175B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4163955A (en) * | 1978-01-16 | 1979-08-07 | International Telephone And Telegraph Corporation | Cylindrical mode power divider/combiner with isolation |
| CN103490133A (en) * | 2013-09-18 | 2014-01-01 | 中国电子科技集团公司第四十一研究所 | Micro-strip multi-directional power divider/combiner based on flexible connection |
| CN105222857A (en) * | 2014-06-30 | 2016-01-06 | 罗斯蒙特储罐雷达股份公司 | Multichannel guide wave radar level gauge |
| CN104466330A (en) * | 2014-11-25 | 2015-03-25 | 陕西黄河集团有限公司 | Microstrip power divider with coaxial cable input into arbitrary paths |
| CN110994108A (en) * | 2019-12-30 | 2020-04-10 | 华南理工大学 | Four-way arbitrary power division ratio Gysel type power divider/combiner |
| CN111048880A (en) * | 2020-02-12 | 2020-04-21 | 南京长江电子信息产业集团有限公司 | Power divider |
| KR20220168105A (en) * | 2021-06-15 | 2022-12-22 | 서강대학교산학협력단 | Power divider and combiner |
| CN115663430A (en) * | 2022-12-28 | 2023-01-31 | 成都世源频控技术股份有限公司 | Spiral winding shaft type microstrip filter and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| CHAO WANG ET AL.: "Multiway microwave planar power divider/combiner based on substrate integrated rectangular waveguide directional couplers", 《MICROWAVE AND OPTICAL TECHNOLOGY LETTERS》, vol. 50, no. 6 * |
| 张娜: "基于介质谐振器的太赫兹超材料器件研究", 《万方学术》 * |
| 马庆超: "双频功分器及LCP柔性功分器的设计", 《中国优秀硕士学位论文全文数据库（信息科技辑）》, no. 2 * |
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| CN117175175B (en) | 2024-01-16 |
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