CN216850278U - Three-path power synthesis device - Google Patents
Three-path power synthesis device Download PDFInfo
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- CN216850278U CN216850278U CN202122812064.XU CN202122812064U CN216850278U CN 216850278 U CN216850278 U CN 216850278U CN 202122812064 U CN202122812064 U CN 202122812064U CN 216850278 U CN216850278 U CN 216850278U
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Abstract
The application discloses a three-way power synthesis device, relates to the field of high-power microwaves, and particularly relates to a three-way power synthesis device; the method comprises the following steps: one output port and three input ports; the output end is a rectangular waveguide, the machining is easy to carry out, a plurality of impedance transformation blocks are arranged in the rectangular waveguide, and the input port is converted by using an impedance matching structure. By adjusting parameters such as the size and the position of the matching structure, the relative relation between each port and the waveguide and the path of signal transmission can be optimized, and the amplitude and the phase consistency of the ports are realized; the matching structure is simple and easy to process, the compactness of the structure is improved, and the difficulty of assembly is reduced.
Description
Technical Field
The application relates to the field of high-power microwaves, in particular to a three-path power synthesis device.
Background
The power synthesizer utilizes the power amplifying circuit to amplify the input signal, and the traditional binary power synthesis can only realize 2^ n power synthesis, so that the synthesis scale exceeding the requirement is often adopted in some engineering applications. This not only results in the increase of hardware cost, consumption, has still increased the volume of equipment, weight, has reduced the performance stability of equipment long-time work.
In the prior art, three paths of power distribution synthesis are realized, wherein the three paths of power distribution synthesis mainly comprise a branch waveguide structure, a waveguide E-T cascade structure, a chain type waveguide power synthesis structure and an N path power synthesis structure; among them, a branched waveguide structure is usually adopted to implement three-way power division and synthesis. The various structures all have the problems of not compact structure and high requirement on processing precision.
As shown in fig. 1, the branched waveguide structure is formed by adding one path of sub-line waveguide on the basis of the 3dB branched directional coupler, so as to form a structure of one path of main line waveguide in the middle and two paths of sub-line waveguides on two sides. The power of the main line waveguide is coupled to the auxiliary line through the branch waveguide between the main line waveguide and the auxiliary line waveguide. However, the phase consistency of the branched waveguide structure is poor, and the volume and the structural size of the device are not compact enough, so that the requirement on the processing precision is high.
As shown in fig. 2, the waveguide E-T cascade structure adopts two-stage synthesis, which has multi-stage cascade loss and reduces the synthesis efficiency. Meanwhile, it is not easy to achieve ideal 1:1 and 2:1 power distribution in the structure processing process, increasing the processing difficulty.
The chain type waveguide power synthesis structure conveniently realizes power synthesis of any path by adjusting the coupling degree of each section, but because the paths of signal transmission are inconsistent, the structure can only realize in-phase output at a single frequency point, and after the frequency point is deviated, the phase consistency is rapidly deteriorated. Meanwhile, the distance between the ports of the chain structure is large, so that the whole size of the device is not compact enough.
The N-path power synthesis structure adopts standard waveguide input, and then the wide edge of the waveguide is extended to form a waveguide cavity. The cavity may be equivalent to a section of low impedance transmission line. The device based on the N-path power synthesis structure is large in size and not compact enough in structure. Meanwhile, the requirements on the processing precision of the connection part of each port and the inductance column are high.
Therefore, in order to solve the problems in the prior art, it is urgently needed to provide a novel power synthesis technology that combines other combining manners such as binary and the like, can flexibly obtain multi-path power synthesis, and has a compact structure, easy processing and high performance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to avoid the defects in the prior art, and provides a novel three-path power synthesis device which is compact in structure, easy to process and high in performance.
The purpose of the utility model is realized by the following technical scheme:
a three-way power combining apparatus comprising: one output port and three input ports; the output end 1 is a rectangular waveguide and is internally provided with a plurality of impedance transformation blocks; the input port is connected with the impedance transformation block through an internal conductor which is internally connected; each input port is separately connected with the corresponding impedance transformation block.
Preferably, the input port includes: a first input port, a second input port, and a third input port; the first input port and the second input port are symmetrically distributed on two sides of the center line of the rectangular waveguide, and the third input port is arranged on the center line; the impedance transformation blocks connected with the impedance transformation device are respectively a first impedance transformation block, a second impedance transformation block and a third impedance transformation block.
More preferably, the first input port and the second input port are both of a coaxial end feed structure or a microstrip side feed structure.
Preferably, the first input port and the second input port are both in a coaxial side-feeding structure.
Preferably, the first and second impedance transformation blocks are both of a graded impedance transformation structure.
Preferably, the first and second impedance transformation blocks are both electrically or magnetically coupled matching structures.
In the above, the third input port is a coaxial end feed structure or a microstrip side feed structure.
In the above, the third input port is a coaxial side-feeding structure.
Specifically, the third impedance transformation block is of a gradual impedance transformation structure.
In another specific example, the third impedance transformation block is an electric coupling or magnetic coupling matching structure.
The utility model achieves the following beneficial effects: a three-way power combining apparatus comprising: one output port and three input ports; the output end is a rectangular waveguide, the machining is easy to carry out, a plurality of impedance transformation blocks are arranged in the rectangular waveguide, and the input port is converted by using an impedance matching structure. By adjusting parameters such as the size and the position of the matching structure, the relative relation between each port and the waveguide and the path of signal transmission can be optimized, and the amplitude and the phase consistency of the ports are realized; the matching structure is simple and easy to process, the compactness of the structure is improved, and the difficulty of assembly is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a branched waveguide structure in the prior art.
Fig. 2 is a schematic structural diagram of a waveguide E-T cascade structure in the prior art.
Fig. 3 is a schematic perspective view of a three-way power combining device in embodiment 1 of the present application.
Fig. 4 is a schematic top view of a three-way power combining device in embodiment 1 of the present application.
Fig. 5 is a schematic side view of a three-way power combining device in embodiment 1 of the present application.
Fig. 6 is a schematic side view of a three-way power combining device in embodiment 2 of the present application.
Fig. 7 is a schematic perspective view of a three-way power combining device in embodiment 3 of the present application.
Fig. 8 is a schematic top view of a three-way power combining device in embodiment 3 of the present application.
Fig. 9 is a schematic side view of a three-way power combining device in embodiment 3 of the present application.
Fig. 10 is a schematic perspective view of a three-way power combining device in embodiment 4 of the present application.
Fig. 11 is a schematic top view of a three-way power combining device in embodiment 4 of the present application.
Fig. 12 is a schematic side view of a three-way power combining device in embodiment 4 of the present application.
Fig. 13 is a schematic perspective view of a three-way power combining device in embodiment 5 of the present application.
Fig. 14 is a schematic top view of a three-way power combining device in embodiment 5 of the present application.
Fig. 15 is a schematic side view of a three-way power combining device in embodiment 5 of the present application.
Among them, fig. 5 to fig. 15 include:
1. a rectangular waveguide;
21. a first input port; 22. a second input port; 23. a third input port;
211. a first inner conductor; 221. a second inner conductor; 231. a third inner conductor;
212. a first impedance transformation block; 222. a second impedance transformation block; 232. and a third impedance transformation block.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below through embodiments with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
As shown in fig. 3 to 5, one of the implementation methods of a three-way power combining apparatus of the present application is a three-way power combining apparatus, including: one output port and three input ports; the output end is a rectangular waveguide 1, and a plurality of impedance transformation blocks are arranged in the output end; the input port is connected with the impedance transformation block through an internal conductor which is internally connected; one end of the inner conductor is connected with the conductive structure in the input port, the other end of the inner conductor is connected with the impedance transformation block to play a role of conduction, and each input port is respectively and independently electrically connected with the corresponding impedance transformation block.
Specifically, the input port includes: a first input port 21, a second input port 22, and a third input port 23; the first input port 21 and the second input port 22 are symmetrically distributed on two sides of the center line of the rectangular waveguide 1, and the third input port 23 is arranged on the center line; the first input port 21, the second input port 22, and the third input port 23 are individually connected to the first impedance conversion block 212, the second impedance conversion block 222, and the third impedance conversion block 232 via the first inner conductor 211, the second inner conductor 221, and the third inner conductor 231, respectively, which are connected to each other.
More specifically, the first input port 21, the second input port 22, and the third input port 23 all adopt a coaxial feed structure. Wherein, coaxial end is presented the structure, promptly: the input port adopts a coaxial connector and is arranged at the short-circuit end of the rectangular waveguide 1.
The first impedance transformation block 212, the second impedance transformation block 222, and the third impedance transformation block 232 all adopt a gradual impedance transformation structure to perform impedance matching.
More specifically, the output end is of a metal waveguide structure, and has low insertion loss and high power capacity.
The input port is converted by using the impedance conversion block, and the relative relation between each port and the waveguide and the relative relation between the ports and the signal transmission path can be optimized by adjusting the parameters such as the size, the position and the like of the impedance conversion block, so that the amplitude and the phase consistency of the ports are realized. The first input port 21 and the second input port 22 are symmetrically distributed on two sides of the center line, and are symmetrical in position and identical in size, so that the two paths have good amplitude and phase consistency.
Example 2
As shown in fig. 3 to fig. 6, the main technical solution of this embodiment is substantially the same as that of embodiment 1, and the features not explained in this embodiment adopt the explanations in embodiment 1, and are not described again here. This example differs from example 1 in that:
in each impedance transformation block, the transitional structural impedance gradient relation may be any one of step transformation, exponential gradient, triangular gradient and Klopfenstein gradient.
Specifically, as shown in fig. 8, the first impedance transformation block 212, the second impedance transformation block 222, and the third impedance transformation block 232 all adopt a step transformation structure, and the corresponding structural impedance gradient relationship is step transformation.
Example 3
As shown in fig. 7 to 9, the main technical solution of this embodiment is substantially the same as that of embodiment 1 or embodiment 2, and the features that are not explained in this embodiment adopt the explanations in embodiment 1 or embodiment 2, which is not described herein again. This example differs from example 1 or example 2 in that:
specifically, the first input port 21, the second input port 22, and the third input port 23 all adopt a microstrip type side-feeding structure. Wherein, microstrip formula side is presented the structure, promptly: the input port adopts a direct insertion type connector, adopts a microstrip line as an inner conductor to be connected with the direct insertion type connector, and is arranged on the side surface of the rectangular waveguide 1.
Example 4
As shown in fig. 10 to 12, the main technical solution of this embodiment is substantially the same as that of embodiment 1, embodiment 2, or embodiment 3, and the features that are not explained in this embodiment adopt the explanations in embodiment 1, embodiment 2, or embodiment 3, and are not described herein again. This example differs from example 1 or example 2 or example 3 in that:
Specifically, the first input port 21, the second input port 22, and the third input port 23 all adopt a coaxial side-feeding structure. Wherein, coaxial side-fed structure, promptly: the input port is a coaxial connector and is arranged on the side surface of the rectangular waveguide 1.
More specifically, the first impedance transformation block 212, the second impedance transformation block 222, and the third impedance transformation block 232 corresponding to the first input port 21, the second input port 22, and the third input port 23 all adopt an electric coupling matching structure, that is, matching corresponding impedances through capacitive coupling.
Specifically, the first impedance transformation block 212, the second impedance transformation block 222, and the third impedance transformation block 232 corresponding to the first input port 21, the second input port 22, and the third input port 23 are matched by using a magnetic coupling matching structure, that is, matching corresponding impedances by magnetic field coupling.
Example 5
As shown in fig. 13 to 15, the main technical solution of this embodiment is substantially the same as that of embodiment 1 or embodiment 2 or embodiment 3 or embodiment 4, and the features not explained in this embodiment adopt the explanations of embodiment 1 or embodiment 2 or embodiment 3 or embodiment 4, which are not described herein again. This example differs from example 1 or example 2 or example 3 or example 4 in that:
The first input port 21 and the second input port 22 need to be symmetrical in position and the same in size, and maintain good consistency, while the third input port 23 is relatively independent, and can be used for impedance matching and signal transmission path optimization independently. That is, the third input port 23 may take a different port form from the first input port 21 or the second input port 22, and the third impedance transformation block 232 may take the same or different impedance matching structure as the first impedance transformation block 212 or the second impedance transformation block 222.
Specifically, as shown in fig. 13 to 15, the first input port 21 and the second input port 22 both adopt a coaxial feed structure, and the third input port 23 adopts a microstrip type side feed structure. The corresponding first impedance transformation block 212, second impedance transformation block 222 and third impedance transformation block 232 all adopt a gradual impedance transformation structure to perform impedance matching.
The third input port 23 and the first and second input ports 21 and 22 may be combined using different input forms, input positions, and connected to matched impedance transformation blocks. Each input structure is simple, the amplitude and phase consistency of each port can be flexibly adjusted, and high-efficiency power synthesis is realized.
In conclusion, the first-order power synthesis is adopted, so that the path loss of the power synthesis is reduced. Meanwhile, a parallel input structure is adopted, and three input ports are designed in the same area, so that the problem of unbalanced phase of a chain structure is avoided. Meanwhile, the main body (namely the output end) of the waveguide structure is of a rectangular waveguide structure, and machining is easy to perform. Meanwhile, the matching structure is simple and easy to process, the compactness of the structure is improved, the assembly difficulty is reduced, the insertion loss is low, the power capacity is large, the impedance matching structure can be flexibly adjusted, the waveguide conversion of broadband low reflection is realized, and the working bandwidth of power synthesis is improved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present application and the technical principles employed. It will be understood by those skilled in the art that the present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the appended claims.
Claims (10)
1. A three-way power combining apparatus, comprising: one output port and three input ports;
the output end is a rectangular waveguide and is internally provided with a plurality of impedance transformation blocks;
the input port is connected with the impedance transformation block through an internally connected inner conductor;
each input port is separately connected with the corresponding impedance transformation block.
2. The three-way power combining apparatus of claim 1, wherein:
the input port includes: a first input port, a second input port and a third input port;
the first input port and the second input port are symmetrically distributed on two sides of a central line of the rectangular waveguide, and the third input port is arranged on the central line; the impedance transformation blocks connected with the impedance transformation device are respectively a first impedance transformation block, a second impedance transformation block and a third impedance transformation block.
3. The three-way power combining apparatus of claim 2, wherein:
the first input port and the second input port are both of a coaxial end feed structure or a microstrip type side feed structure.
4. The three-way power combining apparatus of claim 2, wherein:
the first input port and the second input port are both coaxial side-fed structures.
5. The three-way power combining apparatus of claim 3, wherein:
the first impedance transformation block and the second impedance transformation block are both of a gradual impedance transformation structure.
6. The three-way power combining apparatus of claim 4, wherein:
the first impedance transformation block and the second impedance transformation block are both electric coupling or magnetic coupling matching structures.
7. A three-way power combining apparatus according to any one of claims 2 to 6, wherein:
the third input port is of a coaxial end feed structure or a micro-strip side feed structure.
8. A three-way power combining apparatus according to any one of claims 2 to 6, wherein:
the third input port is of a coaxial side feed structure.
9. The three-way power combining apparatus of claim 7, wherein:
the third impedance transformation block is of a gradual impedance transformation structure.
10. The three-way power combining apparatus of claim 8, wherein:
the third impedance transformation block is an electric coupling or magnetic coupling matching structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122812064.XU CN216850278U (en) | 2021-11-16 | 2021-11-16 | Three-path power synthesis device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122812064.XU CN216850278U (en) | 2021-11-16 | 2021-11-16 | Three-path power synthesis device |
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| CN216850278U true CN216850278U (en) | 2022-06-28 |
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