CN118448837A - Short wave power synthesizer - Google Patents
Short wave power synthesizer Download PDFInfo
- Publication number
- CN118448837A CN118448837A CN202410903975.9A CN202410903975A CN118448837A CN 118448837 A CN118448837 A CN 118448837A CN 202410903975 A CN202410903975 A CN 202410903975A CN 118448837 A CN118448837 A CN 118448837A
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- CN
- China
- Prior art keywords
- matching
- synthesizer
- layer plate
- coaxial connector
- capacitor
- Prior art date
- 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
- 239000003990 capacitor Substances 0.000 claims abstract description 29
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 18
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 18
- 239000003985 ceramic capacitor Substances 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003012 network analysis Methods 0.000 description 1
- 238000006257 total synthesis reaction Methods 0.000 description 1
Classifications
-
- 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
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
- H01P5/183—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers at least one of the guides being a coaxial line
-
- 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
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/38—Impedance-matching networks
Landscapes
- Transmitters (AREA)
Abstract
The invention discloses a short wave power synthesizer, which belongs to the technical field of synthesizers and comprises a synthesizer shell (1), wherein an upper layer plate (8) and a lower layer plate (9) are arranged in the synthesizer shell (1), an input coaxial connector (2) and a balance resistor (4) are arranged on the lower layer plate (9), an output coaxial connector (3) is arranged above the upper layer plate (8), and the short wave power synthesizer further comprises at least four paths of input circuits, each path of input circuit comprises a matching unit, the matching unit comprises a matching capacitor C1 (5), a matching inductor L1 (6) and a total matching capacitor C2 (7), and the matching capacitor C1 (5) and the matching inductor L1 (6) of the matching unit are arranged on the upper layer plate (8); the synthesizer of the invention has the advantages of greatly reduced weight, reduced volume, effective impedance matching, reduced port standing wave and transmission loss, effective synthesizer heating reduction, and improved synthesizer synthesis efficiency.
Description
Technical Field
The invention relates to the technical field of synthesizers, in particular to a shortwave power synthesizer.
Background
The synthesizer is an important component of the transmission system in which the power synthesis is performed. Because the single power tube is only hundred W level, it is difficult to meet the power requirement of the whole transmitter, so that a multi-path power synthesizer is needed to synthesize the low-power radio frequency signal into the required high-power signal, the total power obtained is far greater than the output power of the single power amplifier circuit, thereby effectively improving the transmitting efficiency and reducing the manufacturing cost.
The implementation modes of the power synthesizer in the radio frequency microwave field are numerous, and the implementation modes comprise the synthesis of a plurality of bridge forms such as Wilkinson microstrip line synthesis, branch line parallel line synthesis and the like, and the synthesis of a transmission line transformer form; different synthesis modes are used according to different power and frequency, and the synthesis modes comprise waveguide type, microstrip line stripline type, coaxial line type and the like.
The waveguide synthesizer can bear high power, but is mostly used above the L wave band due to size limitation, and short waves (the frequency is 3-30 MHz) are not considered to be used; the Wilkinson synthesizer designed by the microstrip line has a too long size in a short wave band, and the microstrip line is difficult to bear high-power signals above KW level. At present, a general short-wave high-power synthesizer adopts a transmission line transformer principle to design, but due to the use of the transmission line transformer, the 30KW-32 combined 1-level synthesizer has large volume and heavy weight, and due to the concentrated heating of a magnetic core, the high-power synthesizer has higher temperature rise, and various forced cooling measures are adopted to reduce the temperature rise, so that the extra manufacturing cost is caused.
Disclosure of Invention
The present invention is directed to a short wave power combiner for solving the above problems.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the short wave power synthesizer comprises a synthesizer shell, an upper layer plate and a lower layer plate are arranged in the synthesizer shell, an input coaxial connector and a balance resistor are arranged on the lower layer plate, an output coaxial connector is arranged above the upper layer plate, at least four paths of input circuits are further included, each path of input circuit comprises a matching unit, the matching unit comprises a matching capacitor C1, a matching inductor L1 and a total matching capacitor C2, the matching capacitor C1 and the matching inductor L1 of the matching unit are arranged on the upper layer plate, and the total matching capacitor C2 is arranged on a side plate and is connected to a total synthesis point through a plurality of silver plating high-temperature wires; the input coaxial connector is connected to the input end of the matching unit of the upper plate through a coaxial cable, and meanwhile, the input coaxial connector is connected to the balance resistor, and the balance resistor is installed among ports in a star connection mode and a middle point common potential mode, so that isolation among ports is achieved.
As an preferable technical scheme, the matching capacitor C1 is a multilayer ceramic capacitor. To meet the high power transmission needs. For example, DLC70E multilayer ceramic capacitors of Darlikappy may be used.
As an optimal technical scheme, the matching inductor L1 is wound on a polytetrafluoroethylene bracket by an enamelled wire, and the bracket is provided with a threaded groove for fixing the wound wire to form an air-core coil. The inductance can adjust the number of turns and the turn spacing, thereby adjusting the inductance value and the center frequency point.
As a preferable technical scheme, the total matching capacitor C2 is an adjustable ceramic vacuum capacitor. Specifically, the electric performance and the center frequency point of the synthesizer are adjusted by adjusting the relative area of the capacitance plates and then the capacitance value through the adjustable vacuum capacitance adjusting rod.
As a preferred technical scheme, the matching capacitors C1 and the matching inductors L1 of the matching unit are 32 groups in total, and are uniformly staggered on the upper surface and the lower surface of the upper layer plate, as shown in fig. 2, 16 groups are arranged on each surface, and 16 groups on each surface are radially arranged to form a circular structure. The space utilization rate of the composite structure is greatly improved, the composite structure is finally connected to the central conductor of the output coaxial connector in a concentrated mode to be synthesized, and the synthesized power is finally output through the output coaxial connector.
The invention adopts a novel synthesis circuit and a synthesis structure with high space utilization rate, greatly reduces the volume and weight of the synthesizer, has compact structure and better consistency, and can be applied to synthesizer designs with different frequencies, synthesis paths and powers to provide reference for the design of short wave high-power synthesizers.
Compared with the prior art, the invention has the advantages that:
1. the invention adopts a brand new synthesis circuit, avoids using components with heavy weight such as a short wave transmission line transformer and the like, and greatly reduces the weight of the synthesizer from 150Kg to 40Kg;
2. According to the invention, three-stage matching capacitors and matching inductors are adopted to directly synthesize impedance matching, so that compared with the traditional multistage synthesizer, the transmission loss is reduced from 0.6dB to 0.2dB, the heat of the synthesizer is effectively reduced, and the synthesis efficiency of the synthesizer is improved;
3. The integral synthesis structure of the invention presents a birdcage-shaped structure, and the synthesis units are distributed in the synthesizer in a ring shape, so that the space utilization rate of the synthesis structure is greatly improved, and compared with the traditional 32-path 30 KW-level synthesizer, the height of more than 25U is reduced to 9U.
Drawings
FIG. 1 is a perspective view of the structure of embodiment 1 of the present invention;
FIG. 2 is a side view of the upper plate of example 1 of the present invention;
Fig. 3 is a circuit diagram of embodiment 1 of the present invention.
In the figure: 1. a synthesizer housing; 2. inputting a coaxial connector; 3. outputting a coaxial joint; 4. balancing resistance; 5. a matching capacitor C1; 6. matching inductance L1; 7. a total matching capacitance C2; 8. an upper plate; 9. a lower plate.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Example 1:
Referring to fig. 1 and 2, a short wave power synthesizer includes a synthesizer housing 1, including four side plates and an upper input/output panel and a lower input/output panel, forming a complete cube, an upper plate 8 and a lower plate 9 are disposed in the synthesizer housing 1, an input coaxial connector 2 and a balancing resistor 4 are disposed on the lower plate 9, an output coaxial connector 3 is disposed above the upper plate 8, and further includes 32 paths of input circuits, as shown in fig. 3, each path of input circuit includes a matching unit, the matching unit includes a matching capacitor C1 5, a matching inductance L1 6 and a total matching capacitor C2 7, the matching capacitor C1 5 and the matching inductance L1 6 of the matching unit are disposed on the upper plate 8, and the total matching capacitor C2 7 is disposed on the side plates and is connected to a total combining point through a plurality of silver plating high-temperature wires; the input coaxial connector 2 is connected to the input end of the matching unit of the upper plate 8 through a coaxial cable, meanwhile, the input coaxial connector 2 is connected to the balance resistor 4, and the balance resistor 4 completes the installation of balance resistors among ports in a star connection and middle point common potential mode, so that the isolation among ports is realized;
In this embodiment, the matching capacitor C1 5 is a multilayer ceramic capacitor; the matching capacitor C1 5 of the embodiment adopts a DLC70E type multilayer ceramic capacitor of Darlikepu;
the matching inductor L1 6 is wound on a polytetrafluoroethylene bracket by an enamelled wire, and the bracket is provided with a threaded groove for fixing the wound wire to form an air-core coil;
The total matching capacitor C2 7 is an adjustable ceramic vacuum capacitor; the total matching capacitor C2 7 of the embodiment adopts CKTB-1500-5 type adjustable ceramic vacuum capacitor of Crlker technology.
In this embodiment, a total of 32 sets, that is, 32 paths, of matching capacitors C1 7 and matching inductors L1 6 of the matching unit are uniformly arranged on the upper and lower surfaces of the upper layer plate 8, 16 sets on each surface are radially arranged in a circular structure, and finally, the 16 sets are intensively connected to the central conductor of the output coaxial connector 3 for synthesis, and the synthesized power is finally output through the output coaxial connector 3.
The performance of the 32-path 30KW short wave power synthesizer in the embodiment is tested by using vector network analysis, the port standing wave is less than 1.3, the insertion loss is less than 0.2dB, and the isolation is greater than 35dB.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. The shortwave power synthesizer is characterized by comprising a synthesizer shell (1), wherein an upper layer plate (8) and a lower layer plate (9) are arranged in the synthesizer shell (1), an input coaxial connector (2) and a balance resistor (4) are arranged on the lower layer plate (9), an output coaxial connector (3) is arranged above the upper layer plate (8), the shortwave power synthesizer further comprises at least four paths of input circuits, each path of input circuit comprises a matching unit, the matching unit comprises a matching capacitor C1 (5), a matching inductor L1 (6) and a total matching capacitor C2 (7), and the matching capacitor C1 (5) and the matching inductor L1 (6) of the matching unit are arranged on the upper layer plate (8); the input coaxial connector (2) is connected to the input end of the matching unit of the upper plate (8) through a coaxial cable, meanwhile, the input coaxial connector (2) is connected to the balance resistor (4), and the balance resistor (4) completes the installation of the balance resistor among ports in a star connection and middle point common potential mode, so that isolation among ports is achieved.
2. A short wave power combiner according to claim 1, characterized in that the matching capacitor C1 (5) is a multilayer ceramic capacitor.
3. A shortwave power combiner according to claim 1, characterized in that the matching inductance L1 (6) is wound from enameled wire to a polytetrafluoroethylene support, which is provided with a threaded groove for fixing the wound wire, constituting an air-core coil.
4. A short wave power combiner according to claim 1, characterized in that the total matching capacitance C2 (7) is an adjustable ceramic vacuum capacitance.
5. The shortwave power synthesizer according to claim 1, wherein the matching capacitors C1 (5) and the matching inductors L1 (6) of the matching unit are 32 groups in total, and are uniformly arranged on the upper surface and the lower surface of the upper plate (8), 16 groups are arranged on each surface, 16 groups on each surface are arranged in a birdcage-shaped annular structure, and finally are intensively connected to the central conductor of the output coaxial connector (3) for synthesis, and the synthesized power is finally output through the output coaxial connector (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410903975.9A CN118448837B (en) | 2024-07-08 | 2024-07-08 | Short wave power synthesizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410903975.9A CN118448837B (en) | 2024-07-08 | 2024-07-08 | Short wave power synthesizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118448837A true CN118448837A (en) | 2024-08-06 |
| CN118448837B CN118448837B (en) | 2024-09-03 |
Family
ID=92318344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410903975.9A Active CN118448837B (en) | 2024-07-08 | 2024-07-08 | Short wave power synthesizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118448837B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008160449A (en) * | 2006-12-22 | 2008-07-10 | Toshiba Corp | High frequency power amplifier |
| CN104393384A (en) * | 2014-11-13 | 2015-03-04 | 华南理工大学 | A Miniaturized Radial Power Divider/Combiner with High Isolation |
| WO2022156828A1 (en) * | 2021-01-22 | 2022-07-28 | 华南理工大学 | Grounded coplanar waveguide structure-based radio frequency broadband power amplifier and design method |
| CN115528404A (en) * | 2021-06-25 | 2022-12-27 | 广州海格通信集团股份有限公司 | Different frequency power combiner and multi-channel different frequency power combiner |
| CN115842233A (en) * | 2023-02-28 | 2023-03-24 | 季华实验室 | Radio frequency power synthesizer |
-
2024
- 2024-07-08 CN CN202410903975.9A patent/CN118448837B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008160449A (en) * | 2006-12-22 | 2008-07-10 | Toshiba Corp | High frequency power amplifier |
| CN104393384A (en) * | 2014-11-13 | 2015-03-04 | 华南理工大学 | A Miniaturized Radial Power Divider/Combiner with High Isolation |
| WO2022156828A1 (en) * | 2021-01-22 | 2022-07-28 | 华南理工大学 | Grounded coplanar waveguide structure-based radio frequency broadband power amplifier and design method |
| CN115528404A (en) * | 2021-06-25 | 2022-12-27 | 广州海格通信集团股份有限公司 | Different frequency power combiner and multi-channel different frequency power combiner |
| CN115842233A (en) * | 2023-02-28 | 2023-03-24 | 季华实验室 | Radio frequency power synthesizer |
Non-Patent Citations (1)
| Title |
|---|
| 兰洋: "超短波宽带大功率6路功率合成器设计分析", 《通讯世界》, vol. 27, no. 5, 25 May 2020 (2020-05-25) * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118448837B (en) | 2024-09-03 |
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