CN107749510B - Parallel power synthesizer and assembling method thereof - Google Patents
Parallel power synthesizer and assembling method thereofDownload PDFInfo
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- CN107749510B CN107749510BCN201711192738.2ACN201711192738ACN107749510BCN 107749510 BCN107749510 BCN 107749510BCN 201711192738 ACN201711192738 ACN 201711192738ACN 107749510 BCN107749510 BCN 107749510B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
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Abstract
Translated fromChinese
Description
Technical Field
The invention relates to the field of power synthesizers, in particular to a parallel power synthesizer and an assembling method thereof.
Background
The power synthesizer is a commonly used device in the field of microwave communication and the like, and is used for synthesizing multi-path microwave signal energy into one path and outputting the path. In a stripline power combiner, a parallel power combiner may be used when isolation between the branches is not required.
The impedance of each port of the microwave device is generally 50 Ω, while the impedance of some ports of the parallel power combiner is usually not 50 Ω, taking a 2-in-1 equal power combiner as an example, when the impedance of two branches is 50 Ω, the impedance of the combined output port is 25 Ω, and impedance transition is needed to convert the impedance to 50 Ω.
The traditional impedance transition mode is a gradient line or 1/4 wavelength impedance converter and the like. These impedance transitions tend to be bulky in broadband multiplexing.
Taking the 1/4 wavelength impedance transformer as an example, when the operating bandwidth of the power combiner is wide, a plurality of sections of 1/4 wavelength transmission lines are required; when the working frequency of the power synthesizer is low, each section of 1/4 wavelength transmission line is long; when the power combiner is a multi-path combiner, the impedance ratio is higher, and more sections of 1/4 wavelength transmission lines are needed, for example, the output port impedance of a 2-in-1 power combiner is 25 Ω, the output port impedance of a 4-in-1 power combiner is 12.5 Ω, and the output port impedance of an 8-in-1 power combiner is 6.25 Ω; all of the above factors increase the size of the power combiner.
Disclosure of Invention
In view of the above analysis, in order to solve the above problems, the present invention provides a parallel power combiner, which has a compact structure, a large power capacity, and significant advantages in a broadband multi-path power combining communication system.
The purpose of the invention is mainly realized by the following technical scheme:
a parallel power combiner comprises a cover plate, a metal block, a dielectric block, a partition metal block, a shunt metal block and a metal probe connector; the cover plate is fixed on the top of the metal block, and the dielectric block is arranged in a cavity in the metal block; the partition metal blocks and the shunt metal blocks are distributed in a plurality of mutually independent partition cavities in the medium block; the shunt metal block is arranged at the position, close to the outer side, of the dielectric block and is connected with the adjacent partition metal block; the metal probe connector is connected with the metal block of the separation cavity or the metal block of the shunt circuit through the metal block and the small holes on the medium block.
Furthermore, the medium blocks comprise a first medium dividing block at the upper part and a second medium dividing block at the lower part, grooves are formed in the two medium dividing blocks, and the two medium dividing blocks are buckled to form a plurality of mutually independent separate cavities; the sizes of the plurality of separate cavities are the same as those of the separate cavity metal blocks or the shunt metal blocks, and the separate cavity metal blocks and the shunt metal blocks are respectively embedded into the separate cavities; the shunt metal block and the adjacent one of the compartment metal blocks share one compartment.
The grooves in the medium blocks are the same as the size of the metal blocks in the separated cavities and the metal blocks in the shunts, so that the metal blocks in the separated cavities and the metal blocks in the shunts can be just embedded into the medium blocks, the medium blocks are tightly connected with the metal blocks in the separated cavities, the positions of the metal blocks in the separated cavities and the metal blocks in the shunts are fixed, and the power capacity of the power combiner is increased. The dielectric block is divided into a plurality of isolating cavities through the isolating cavity metal block, and the effect of each isolating cavity is to avoid mode disorder caused by impedance mismatching of electromagnetic wave signals.
Further, the power synthesizer is suitable for L, S, C, X, Ku, Ka or Q wave bands; the shapes and the number of the compartment metal blocks and the shunt metal blocks are related to the use wave bands.
The electromagnetic wave propagation of different wave bands can be different, so that each wave band corresponds to the structure of one metal partition cavity, and s parameters of a plurality of ports are obtained through simulation calculation of electromagnetic simulation software, so that the shapes and the number of the metal blocks of the partition cavities and the metal blocks of the branches can be determined by the optimal s parameters.
Further, when the power combiner is suitable for a Ka band, the compartment metal blocks include a first compartment metal block, a second compartment metal block, a third compartment metal block, a fourth compartment metal block, and a fifth compartment metal block, and the compartment metal blocks are sequentially arranged in the same plane; the first partition cavity metal block, the second partition cavity metal block, the third partition cavity metal block and the fourth partition cavity metal block are of the same structure and are T-shaped metal blocks, and the fifth partition cavity metal block is a cuboid-structure metal block; the side surface of the first separation cavity metal block is provided with a small hole into which a metal probe connector can be inserted; and the side surface of the fifth compartment metal block is connected with the shunt metal block.
The main function of the metal block of the compartment is to match the input and output impedance, and the main principle is to complete the matching of the input and output by the transformation of electromagnetic waves. The function of the shunt metal block is to distribute the electromagnetic wave signal evenly to a plurality of output ends.
Further, the first compartment metal block, the second compartment metal block, the third compartment metal block and the fourth compartment metal block are sequentially arranged in parallel in a positive T and reverse T staggered mode, and the fifth compartment metal block is parallel to other compartment metal blocks.
Furthermore, the upper part of the shunt metal block is a U-shaped structure branch, and the lower part of the shunt metal block is a cuboid structure; both ends of the U-shaped structure are provided with small holes which can be inserted into the metal probe connectors; the lower end of the lower cuboid is connected with the adjacent metal block of the separation cavity.
Further, five metal probe connectors are included; one of the metal probe connectors can be inserted into the small hole of the first separation cavity metal block, and other metal probe connectors can be respectively inserted into the small holes of the shunt metal blocks; the metal probe connector is characterized in that a conductor metal probe is arranged inside the metal probe connector, and a polytetrafluoroethylene medium is coated outside the conductor metal probe.
Further, the size of the metal block is 36mm x 32mm x 10mm, the wall thickness is 3mm, and the size of the cavity inside the metal block is 30mm x 26mm x 7 mm; the cover plate is 36mm by 32mm by 3mm in size; the dielectric blocks are 26mm by 30mm by 6mm in size.
Furthermore, the upper part of the T-shaped metal block is 4mm x 2mm x 4mm, and the lower part of the T-shaped metal block is 2mm x 21 mm; the size of the metal block of the fifth compartment is 2mm by 25 mm; the size of the branch of the shunt metal block is 1mm x 3mm, and the diameter of the metal probe of the inner conductor of the metal probe connector is 0.7 mm.
The electromagnetic waves of different wave bands correspond to the shapes of different metal blocks of the separation cavity and the shunt metal blocks, and when the power combiner is suitable for the Ka wave band, the structures, the number and the sizes of the metal blocks of the separation cavity and the shunt metal blocks are preferable.
The invention also provides an assembling method of the parallel power synthesizer, which comprises the following steps:
step one, putting a first medium dividing block into a metal block, and enabling one surface of a groove to face upwards;
step two, placing the partition cavity metal block and the shunt metal block into the groove of the first shunt medium block, digging the groove of the second shunt medium block to face downwards, and placing the second shunt medium block into the cavity of the metal block, so that the partition cavity metal block and the shunt metal block are completely attached to the partition cavity of the medium block;
step three, inserting and fixing conductor metal probes of the metal probe connector into small holes in the metal block of the separation cavity or the shunt metal block after the conductor metal probes respectively penetrate through the small holes in the metal block and the small holes in the medium block;
and step four, fixing the cover plate on the top of the metal block, and fixing each metal probe connector on the side wall of the metal block.
The invention has the following beneficial effects:
the invention provides a parallel medium type power synthesizer and an assembling method thereof, the parallel medium type power synthesizer completes the impedance matching of input and output through the coupling action between metal blocks of a separate cavity, and couples electromagnetic waves in the cavity into a connector for output through a metal probe connector. The traditional power synthesizer generally adopts a gradient line or 1/4 wavelength impedance converter to complete the process, the invention adopts a transformation method to complete the power synthesis, and utilizes the cross coupling theory in a filter to complete the impedance transformation from input to output. Through dividing into a plurality of compartments metal block, divide into several compartments with the medium piece, avoid the electromagnetic wave signal because the mode confusion that impedance mismatch arouses, utilize the metallic block of branch road to distribute the electromagnetic wave signal evenly to a plurality of output. The power synthesizer is suitable for L, S, C, X, Ku, Ka or Q wave bands, and only S parameters of a plurality of ports are obtained through simulation calculation of electromagnetic simulation software, so that the shapes and the number of the metal blocks of the separation cavity and the metal blocks of the shunt circuit can be determined by the optimal S parameters, and then the impedance matching process is completed according to the theory of the resonant cavity filter to match different electromagnetic wave bands. Compared with the existing synthesizer, the power synthesizer disclosed by the invention has the advantages of simpler and more stable structure, easiness in realization, wider frequency band and smaller insertion loss, is compact in structure and large in power capacity, is more suitable for the application field of microwave and millimeter wave power synthesis, and particularly has obvious advantages in a broadband multipath power synthesis communication system.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a schematic view of a cover plate and a metal block according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a dielectric block according to an embodiment of the present invention;
FIG. 3 is a schematic view of a compartment metal block according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a shunt metal block of an embodiment of the present invention;
FIG. 5 is a schematic view of a metal probe connector according to an embodiment of the invention;
FIG. 6 is a schematic diagram of a first dielectric sub-block assembly according to an embodiment of the present invention;
FIG. 7 is a schematic view of a metal block assembly of the septal cavity of an embodiment of the present invention;
FIG. 8 is a schematic diagram of a second sub-dielectric block assembly according to an embodiment of the present invention;
FIG. 9 is a schematic view of a metal probe connector assembly according to an embodiment of the present invention;
FIG. 10 is a schematic view of a cover plate assembly according to an embodiment of the present invention;
wherein: the metal probe connector comprises a 1-cover plate, a 2-metal block, a 3-dielectric block, a 4-partition metal block, a 4-1-first partition metal block, a 4-2-second partition metal block, a 4-3-third partition metal block, a 4-4-fourth partition metal block, a 4-5-fifth partition metal block, a 5-shunt metal block and a 6-metal probe connector.
Detailed Description
The present invention is further described in the following description in conjunction with the following drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention.
The present embodiment provides a dielectric parallel power combiner suitable for Ka band, including: the structure comprises acover plate 1, ametal block 2, adielectric block 3, fivemetal blocks 4 with separate cavities, twoshunt metal blocks 5 and five metal probe connectors 6, wherein the cavity block is a metal cuboid block with a cavity formed inside; thecover plate 1 is acuboid metal block 2 and is used for covering themetal block 2, a closed metal cavity is formed by the metal block and the metal block, and themedium block 3 can be placed in the closed metal cavity. Themetal block 2 and thedielectric block 3 are provided with small holes which can be inserted with the metal probe connectors 6, and the number of the small holes is the same as that of the metal probe connectors 6.
Themedium block 3 divides into two parts from top to bottom, be first minute medium block and second minute medium block respectively, all dig the recess on two minute medium blocks, when two minute medium blocks lock together from top to bottom, the recess can form a plurality of mutually independent separate chambeies, the size that these separate the chamber is the same with five and separatechamber metal block 4 and two branchcircuit metal block 5's size, wherein, because branchcircuit metal block 5 need with one of them separatechamber metal block 4 contact, in order to guarantee the propagation of electromagnetic wave, consequently dividecircuit metal block 5 and its adjacent separatechamber metal block 4 to share one and separate the chamber, these separate the chamber can enough be used for fixed separatechamber metal block 4 and branchcircuit metal block 5 position in the cavity, increased power combiner's power capacity simultaneously. The material of thedielectric block 3 needs to be capable of transmitting electromagnetic waves, so that the material of thedielectric block 3 is polytetrafluoroethylene, grooves with the same size are formed in thedielectric block 3, and grooves with the same size are formed in the twoshunt metal blocks 5.
The main function of thecompartment metal block 4 is to match the input and output impedance, and the main principle is to complete the matching of the input and output by the transformation of electromagnetic waves. Therefore, the s-parameters of several ports need to be obtained through simulation calculation of electromagnetic simulation software, so that the shapes and the number of thecompartment metal blocks 4 and theshunt metal blocks 5 can be determined by the optimal s-parameter, and then the impedance matching process is completed according to the theory of the resonant cavity filter to match different electromagnetic wave bands. The fivecompartment metal blocks 4 are respectively a first compartment metal block 4-1, a second compartment metal block 4-2, a third compartment metal block 4-3, a fourth compartment metal block 4-4 and a fifth compartment metal block 4-5, wherein the first compartment metal block 4-1, the second compartment metal block 4-2, the third compartment metal block 4-3 and the fourth compartment metal block 4-4 are consistent in structure and are of a T-shaped structure, and the fifth compartment metal block 4-5 is a section of metal cuboid. In themedium block 3, five partitioncavity metal blocks 4 are sequentially arranged in the same plane, a first partition cavity metal block 4-1, a second partition cavity metal block 4-2, a third partition cavity metal block 4-3 and a fourth partition cavity metal block 4-4 are arranged in a positive T and reverse T staggered mode, and the five partitioncavity metal blocks 4 are all parallel. One side of the first compartment metal block 4-1 is provided with a small hole, a metal probe connector 6 is inserted and welded and fixed in the small hole, and the fifth compartment metal block 4-5 is connected with theshunt metal block 5.
The fivecompartment metal blocks 4 may be made of aluminum or copper material, preferably silver aluminum or gold copper plated material, the silver aluminum has the advantage of light weight and can reduce the weight of the power combiner, while the gold copper plated material has the advantage of relatively heavy weight but has the advantages of rapid heat dissipation and small surface loss, so that two materials can be selected according to actual requirements.
Theshunt metal block 5 is composed of aU-shaped metal block 2 and a small section of cuboid. The ends of the U-shaped branches of theshunt metal block 5 are provided with small holes for inserting and positioning the conductor metal probes of the metal probe connector, so that the conductor metal probes in the metal probe connector 6 are tightly connected with theshunt metal block 5.
The metal probe connector consists of an inner conductor metal probe and an outer polytetrafluoroethylene medium ring block, and couples and outputs electromagnetic waves from the cavity of themetal block 2 into the connector.
Based on the technical scheme, the partition cavity in themedium block 3 and the partitioncavity metal block 4 have the same size, so that the partitioncavity metal block 4 is just embedded into themedium block 3, and the partitioncavity metal block 4 is kept to be tightly connected with themedium block 3. The small holes on the side wall of the first separation cavity metal block 4-1 and the branch of theshunt metal block 5 have the same size as the conductor metal probes in the metal probe connector 6, so that the metal probe connector 6 is tightly connected with the first separation cavity metal block 4-1.
The preferred power combiner structure size for the Ka band is as follows: the length, width and height of thecover plate 1 are 36mm, 32mm and 3 mm; the size of themetal block 2 is 36mm x 32mm x 10mm, the size of the inner cavity thereof is 30mm x 26mm x 7mm, and the wall thickness is 3 mm; the two dielectric blocks are the same in size and are both 26mm by 30mm by 3 mm; the first compartment metal block 4-1, the second compartment metal block 4-2, the third compartment metal block 4-3 and the fourth compartment metal block 4-4 are T-shaped formed by two sections of cuboids with the sizes of 2mm x 21mm and 4mm x 2mm x 4mm, and the fifth compartment metal block 4-5 is a section of metal cuboid with the sizes of 2mm x 25 mm; the size of two branches of theshunt metal block 5 is 1mm x 3mm, and the tail ends of the branches are provided with small holes with the diameter of 0.7 mm; the diameter of the inner conductor metal probe of the metal probe connector 6 is 0.7mm, and the diameter of the medium coated outside is 2 mm.
When the power combiner is used for the synthesis of L, S, C, X, Ku or Q wave band and other wave band electromagnetic waves, s parameters of an input port and an output port need to be obtained through simulation calculation of electromagnetic simulation software, so that the shapes and the number of thecompartment metal blocks 4 and theshunt metal blocks 5 can be determined by the optimal s parameters, and then the impedance matching process is completed according to the theory of the resonant cavity filter to match different electromagnetic wave bands. For example, the s-parameter can be calculated by using electromagnetic simulation software such as CST, HFSS, ADS, etc., or by using other software capable of performing electromagnetic simulation calculation.
The invention also provides an assembling method of the power synthesizer, which comprises the following steps:
1. the firstmedium block 3 is placed into the cavity of themetal block 2, and the side with the groove is upwards dug.
2. And placing the five partitioncavity metal blocks 4 and the twoshunt metal blocks 5 into the grooves of the first dielectric dividing block respectively to enable the partitioncavity metal blocks 4 and theshunt metal blocks 5 to be tightly attached to the first dielectric dividing block.
3. And digging a groove of the secondmedium block 3 to face downwards, and filling the groove into the cavity of themetal block 2, so that themetal block 4 of the separation cavity and themetal block 5 of the branch circuit are completely attached to the groove of the second medium block.
4. Inserting a conductor metal probe in a metal probe connector 6 into a small hole in the side wall of the first compartment metal block 4-1, and welding and fixing; and respectively inserting the conductor metal probes in the rest metal probe connectors 6 into the small holes of theshunt metal block 5, and welding and fixing.
5. Thecover plate 1 and themetal block 2 are fixed by screws, and the metal probe connector 6 is fixed to the outer wall of themetal block 2 by screws.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (8)
1. A parallel power combiner is characterized by comprising a cover plate (1), a base metal block (2), a medium block (3), a partition metal block (4), a shunt metal block (5) and a metal probe connector (6); the cover plate (1) is fixed on the top of the base metal block (2), and the dielectric block (3) is arranged in a cavity in the base metal block (2); the partition metal blocks (4) and the shunt metal blocks (5) are distributed in a plurality of mutually independent partition cavities in the medium block (3); the shunt metal block (5) is arranged at the position, close to the outer side, of the medium block (3) and is connected with the adjacent partition metal block (4); the metal probe connector (6) is connected with the partition metal block (4) or the shunt metal block (5) through small holes in the base metal block (2) and the medium block (3);
the power combiner is suitable for a Ka wave band, and the metal block (4) of the battery compartment comprises: the battery comprises a first compartment metal block (4-1), a second compartment metal block (4-2), a third compartment metal block (4-3), a fourth compartment metal block (4-4) and a fifth compartment metal block (4-5), wherein the compartment metal blocks are sequentially arranged in the same plane; the first compartment metal block (4-1), the second compartment metal block (4-2), the third compartment metal block (4-3) and the fourth compartment metal block (4-4) are of the same structure and are T-shaped metal blocks, and the fifth compartment metal block (4-5) is a cuboid-structure metal block; the side surface of the first compartment metal block (4-1) is provided with a small hole into which a metal probe connector (6) can be inserted; the side surface of the fifth compartment metal block (4-5) is connected with the shunt metal block (5).
2. A parallel power combiner according to claim 1, wherein the dielectric blocks (3) comprise a first sub-dielectric block at an upper portion and a second sub-dielectric block at a lower portion, both of the sub-dielectric blocks are provided with grooves, and the plurality of mutually independent compartments are formed after buckling; the sizes of the plurality of the separation cavities are the same as that of the separation cavity metal blocks (4) or the shunt metal blocks (5), and each separation cavity metal block (4) and each shunt metal block (5) are respectively embedded into the separation cavities; the shunt metal block (5) and the adjacent one compartment metal block (4) share one compartment.
3. A parallel power combiner according to claim 1, wherein the first compartment metal block (4-1), the second compartment metal block (4-2), the third compartment metal block (4-3) and the fourth compartment metal block (4-4) are arranged in parallel in sequence in a positive T and reverse T staggered form, and the fifth compartment metal block (4-5) is parallel to the other compartment metal blocks.
4. A parallel power combiner according to claim 1, wherein the upper part of the shunt metal block (5) is a U-shaped branch and the lower part is a rectangular parallelepiped; both ends of the U-shaped structure are provided with small holes which can be inserted into the metal probe connectors (6); the lower end of the lower cuboid is connected with the adjacent metal block (4) of the separation cavity.
5. A parallel power combiner according to claim 1, comprising five metal probe connectors; one of the metal probe connectors (6) can be inserted into the small hole of the first separation cavity metal block (4-1), and other metal probe connectors (6) can be respectively inserted into the small holes of the shunt metal blocks (5); the metal probe connector (6) is internally provided with a conductor metal probe, and a polytetrafluoroethylene medium is coated outside the conductor metal probe.
6. A parallel power combiner according to claim 1, wherein the base metal block (2) has dimensions of 36mm x 32mm x 10mm, a wall thickness of 3mm, and an internal cavity of 30mm x 26mm x 7 mm; the cover plate (1) has dimensions of 36mm by 32mm by 3 mm; the dielectric block (3) has dimensions of 26mm by 30mm by 6 mm.
7. A parallel power combiner according to claim 1, wherein the T-shaped metal blocks have upper dimensions of 4mm x 2mm x 4mm and lower dimensions of 2mm x 21 mm; the size of the metal block (4) of the fifth compartment is 2mm by 25 mm; the size of the branch of the shunt metal block (5) is 1mm x 3mm, and the diameter of the conductor metal probe in the metal probe connector (6) is 0.7 mm.
8. A method of assembling a parallel power combiner according to any of claims 1-7, comprising the steps of:
step one, putting a first medium dividing block into a base metal block (2), and making one side of a groove upwards;
step two, placing the partition cavity metal block (4) and the shunt metal block (5) into a groove of the first sub-medium block, digging a groove of the second sub-medium block to face downwards, and placing the groove into a cavity of the base metal block (2) so that the partition cavity metal block (4) and the shunt metal block (5) are completely attached into a partition cavity of the medium block (3);
thirdly, inserting and fixing an inner conductor of the metal probe connector (6) into small holes in the partition metal block (4) or the shunt metal block (5) after the inner conductor respectively penetrates through the small holes in the base metal block (2) and the small holes in the medium block (3);
and step four, fixing the cover plate (1) on the top of the base metal block (2), and fixing each metal probe connector (6) on the side wall of the base metal block (2).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2688531B2 (en)* | 1990-02-28 | 1997-12-10 | 株式会社トキメック | Power distributor / combiner |
| US6108569A (en)* | 1998-05-15 | 2000-08-22 | E. I. Du Pont De Nemours And Company | High temperature superconductor mini-filters and mini-multiplexers with self-resonant spiral resonators |
| US8350644B2 (en)* | 2009-12-15 | 2013-01-08 | Microelectronics Technology, Inc. | Band pass filter combiner |
| CN205508986U (en)* | 2016-03-25 | 2016-08-24 | 北京中微普业科技有限公司 | Filter configuration is divided to track traffic signals transceiver module merit |
| CN107275814B (en)* | 2017-06-26 | 2023-04-28 | 安徽四创电子股份有限公司 | Synthesizer structure for radar |
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