A special-shaped waveguide power distribution synthesis device

Abstract

The present invention discloses a special-shaped waveguide power distribution and synthesis device, comprising a radial power divider, a radial synthesizer and a plurality of power amplification modules, and also comprising a plurality of power distribution and synthesis components, wherein the power distribution and synthesis components comprise a power division part and a synthesis part, wherein the input end of the power division part is connected to the output end of the radial power divider, and the power division part is configured with N output ends; the synthesis part is configured with N input ends, the input end of each power amplification module is connected to an output end of the power division part, and the output end of the power amplification module is connected to an input end of the synthesis part, and the output end of the synthesis part is connected to the input end of the radial synthesizer; N is an integer greater than 1. The present invention can reduce assembly errors and assembly difficulty, and reduce the difficulty of simulation design of radial power dividers or radial synthesizers, under the premise that the number of power division paths remains unchanged.

Description

Technical Field

[0001] The invention relates to the technical field of waveguide radial power distribution and synthesis, and in particular to a special-shaped waveguide power distribution and synthesis device. Background Art

[0002] Waveguide radial power synthesis technology is mostly used in situations where high-power synthesis of rectangular waveguide power amplifier modules is required. A common solution is to input the RF input signal into a radial power divider, which is then divided by the rectangular waveguide in the radial power divider to output multiple branch signals. Each branch signal corresponds to a power amplifier module. A single branch signal is amplified by the power amplifier module and then input into a radial synthesizer. Several amplified branch signals are synthesized by the rectangular waveguide in the radial synthesizer to output the target RF signal.

[0003] For example, if a 16-path power division and synthesis scheme is adopted, corresponding to 16 power amplifier modules, a one-to-sixteen radial power divider and a sixteen-to-one radial synthesizer are required. The radial power divider needs 16 waveguides to be connected to the input ports of the 16 power amplifier modules respectively, and the radial synthesizer needs 16 waveguides to be connected to the output ports of the 16 power amplifier modules respectively.

[0004] However, in the process of assembling several waveguides and radial power dividers, or several waveguides and radial synthesizers, the phenomenon of error superposition is quite obvious, the possibility of a completely qualified assembly in one time is very small, and the assembly is difficult; moreover, the difficulty of simulation design of radial power dividers or radial synthesizers is also relatively large. Summary of the invention

[0005] The purpose of the present invention includes providing a special-shaped waveguide power distribution and synthesis device, which is designed for waveguide radial power synthesis and can reduce assembly errors and assembly difficulty while keeping the number of power division paths unchanged, and reduce the difficulty of simulation design of radial power dividers or radial synthesizers.

[0006] The embodiments of the present invention are implemented by the following technical solutions:

[0007] A shaped waveguide power distribution and synthesis device comprises a radial power divider, a radial synthesizer and a plurality of power amplification modules, and also comprises a plurality of power distribution and synthesis components, wherein the power distribution and synthesis components comprise a power division part and a synthesis part, wherein the input end of the power division part is connected to the output end of the radial power divider, and the power division part is configured with N output ends; the synthesis part is configured with N input ends, the input end of each of the power amplification modules is connected to an output end of the power division part, and the output end of the power amplification module is connected to an input end of the synthesis part, and the output end of the synthesis part is connected to the input end of the radial synthesizer; and N is an integer greater than 1.

[0008] In one embodiment of the present invention, the power distribution and synthesis component is configured with an H-plane waveguide for transmitting signals.

[0009] In one embodiment of the present invention, the power distribution and synthesis component includes a power division part and a synthesis part integrated into one body.

[0010] In one embodiment of the present invention, the power distribution and synthesis component includes an upper cover plate, an intermediate plate and a lower base plate stacked in sequence from top to bottom; the power division part is arranged between the intermediate plate and the lower base plate, and the synthesis part is arranged between the upper cover plate and the intermediate plate.

[0011] In one embodiment of the present invention, the power division part includes a first T-shaped air waveguide cavity and a power division input waveguide port configured on the lower base plate, and a pair of power division output waveguide ports configured on the lower base plate, and the power division input waveguide port and the pair of power division output waveguide ports are respectively connected to the ends of the first T-shaped air waveguide cavity.

[0012] In one embodiment of the present invention, the first T-shaped air waveguide cavity includes a first T-shaped waveguide groove configured on the middle plate and the lower bottom plate surface for covering the first T-shaped waveguide groove.

[0013] In one embodiment of the present invention, the synthesis part includes a second T-shaped air waveguide cavity and a synthetic output waveguide port configured on the lower base plate, and a pair of synthetic input waveguide ports configured on the lower base plate, and the synthetic output waveguide port and the pair of synthetic input waveguide ports are respectively connected to the ends of the second T-shaped air waveguide cavity.

[0014] In one embodiment of the present invention, the second T-shaped air waveguide cavity includes a second T-shaped waveguide groove configured on the upper cover plate and the middle plate surface for covering the second T-shaped waveguide groove.

[0015] In one embodiment of the present invention, a plurality of the power distribution and combining components are evenly distributed around the radial power divider and combiner.

[0016] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0017] The embodiment of the present invention sets a power distribution and synthesis component that integrates power distribution and power synthesis. The radial power divider performs a power division on the main RF input signal and outputs a branch RF signal. The power distribution synthesis component performs a secondary power division on the branch RF signal. Under the premise of also using the path number power amplification synthesis, compared with the prior art, the power distribution synthesis component is used to perform a secondary power division on the signal to reduce the connection port between the waveguide and the radial power division synthesizer, thereby reducing the signal transmission error caused by the assembly error and reducing the assembly difficulty. Moreover, the number of waveguide paths in the radial power division synthesizer only needs to be set to one N of the number of waveguide paths in the existing radial power divider and radial synthesizer, and N is an integer greater than 1, which reduces the difficulty of simulation design of the radial power divider and radial synthesizer. In addition, since the number of waveguide paths in the radial power divider and radial synthesizer is halved, the volume of the radial power divider and radial synthesizer is reduced, which also reduces the overall volume of the special-shaped waveguide power distribution synthesis device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A bottom view of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the power distribution synthesis component in the present invention;

[0021] Figure 3 This is a schematic diagram of the upper cover structure of the power distribution and synthesis component in the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the intermediate board of the power distribution and synthesis component in the present invention;

[0023] Figure 5 It is a schematic diagram of the lower base plate structure of the power distribution and synthesis component in the present invention;

[0024] Figure 6 It is a connection diagram of the power distribution and synthesis component, the radial power divider and the radial synthesizer in the present invention;

[0025] Figure 7 It is a schematic diagram of the principle of the present invention.

[0026] icon:

[0027] 1- radial power divider, 2- power amplification module, 3- power distribution synthesis component, 31- upper cover plate, 32- middle plate, 33- lower base plate, 341- power divider input waveguide port, 342- power divider output waveguide port, 343- first T-shaped waveguide slot, 351- synthesis output waveguide port, 352- synthesis input waveguide port, 353- second T-shaped waveguide slot, 4- radial synthesizer. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the present invention, it should be noted that if the terms "inside" or "outside" appear to indicate an orientation or position relationship, it is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when in use. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "configure", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Please refer to Figures 1 to 7A shaped waveguide power distribution and synthesis device comprises a radial power divider 1, a radial synthesizer 4 and a plurality of power amplification modules 2, and also comprises a plurality of power distribution and synthesis components 3, wherein the power distribution and synthesis components comprise a power division part and a synthesis part, wherein the input end of the power division part is connected to the output end of the radial power divider 1, and the power division part is provided with N output ends; the synthesis part is provided with N input ends, the input end of each of the power amplification modules 2 is connected to an output end of the power division part, and the output end of the power amplification module 2 is connected to an input end of the synthesis part, and the output end of the synthesis part is connected to the input end of the radial synthesizer 4; and N is an integer greater than 1.

[0034] In order to reduce assembly errors, assembly difficulty, and difficulty in simulation design of the radial power divider 1 or the radial synthesizer 4 while keeping the number of power division paths unchanged, the present technical solution provides a special-shaped waveguide power distribution and synthesis device including a radial power divider 1, a radial synthesizer 4, a power amplification module 2, and a power distribution and synthesis component 3. The number of power distribution and synthesis components 3 is equal to the number of power division paths of the radial power divider 1, and all power distribution and synthesis components 3 are evenly distributed around the radial power divider 1.

[0035] The power distribution and synthesis component 3 includes an upper cover plate 31, an intermediate plate 32 and a lower base plate 33 which are stacked together from top to bottom in sequence, the power division part is arranged between the intermediate plate 32 and the lower base plate 33; the synthesis part is arranged between the upper cover plate 31 and the intermediate plate 32. A first T-shaped waveguide groove 343 is arranged on the side of the middle plate 32 facing the lower bottom plate 33. The first T-shaped waveguide groove 343 and the surface of the lower bottom plate 33 covering the first T-shaped waveguide groove 343 constitute a first T-shaped air waveguide cavity. A power division input waveguide port 341 and a pair of power division output waveguide ports 342 are arranged on the lower bottom plate 33. The power division input waveguide port 341 and the pair of power division output waveguide ports 342 are respectively connected to the three ends of the first T-shaped air waveguide cavity. The first T-shaped air waveguide cavity, the power division input waveguide port 341 and the pair of power division output waveguide ports 342 constitute a power division part, which is used to divide the signal power transmitted from the radial power divider 1 to the power distribution synthesis component 3 into two branch signals. The port of the radial power divider 1 is interconnected with the power division input waveguide port 341 through a waveguide, and the power division output waveguide port 342 is interconnected with the signal input port of the power amplifier module 3. Each branch signal is connected to a power amplifier module 3 to perform power amplification on the branch signal.

[0036] The upper cover plate 31 is provided with a second T-shaped waveguide groove 353, and the second T-shaped waveguide groove 353 and the surface of the middle plate 32 covering the second T-shaped waveguide groove 353 constitute a second T-shaped air waveguide cavity. The lower bottom plate 33 is provided with a synthesis output waveguide port 351 and a pair of synthesis input waveguide ports 352, and the synthesis output waveguide port 351 and the pair of synthesis input waveguide ports 352 are respectively connected to the three ends of the second T-shaped air waveguide cavity. The second T-shaped air waveguide cavity, the synthesis output waveguide port 351 and the pair of synthesis input waveguide ports 352 constitute a synthesis part, which is used to synthesize the two amplified branch signals into one signal. The synthesis input waveguide port 352 is interconnected with the power amplifier module 3, the synthesis output waveguide port 351 is interconnected with the radial synthesizer 4, and the synthesis input waveguide port 352 corresponds to the power division output waveguide port 342 one by one.

[0037] It should be noted that the second T-shaped waveguide groove 353 is located on the upper cover plate 31, while the synthesized output waveguide port 351 and a pair of synthesized input waveguide ports 352 are both arranged on the lower base plate 33. Since there is an intermediate plate 32 between the upper cover plate 31 and the lower base plate 33, in order to make the synthesized output waveguide port 351 and the synthesized input waveguide port 352 connected with the second T-shaped waveguide groove 353, a through hole is further opened at the corresponding position on the intermediate plate 32, so that the synthesized output waveguide port 351 is connected with the second T-shaped waveguide groove 353, and the synthesized input waveguide port 352 is connected with the second T-shaped waveguide groove 353.

[0038] It should be noted that the power division unit can change the structure of the waveguide slot according to design requirements to achieve the distribution of even-numbered branch signals such as one-to-four, one-to-six, or one-to-eight. Similarly, the synthesis unit can change the structure of the waveguide slot according to design requirements to achieve the synthesis of even-numbered branch signals such as four-in-one, six-in-one, or eight-in-one.

[0039] The power division part of this technical solution adopts 2-way power division, that is, one-to-two; the synthesis part of this technical solution adopts 2-way synthesis, that is, two-in-one. The working principle of this technical solution is: the main RF input signal enters the radial power divider 1, and the radial power divider 1 divides the main RF input signal into n branch RF signals of equal power through waveguides. 10 , 1 branch RF signal a 10 Corresponding to interconnecting a power distribution synthesis component 3, one of the branch RF signals a 10 For example, the branch RF signal a 10 The power division part of the power distribution and synthesis component 3 is entered from the power division input waveguide port 341 and is divided into two branch RF signals a with half the power. 20 , 2-way branch RF signal a 20 The two power splitter output waveguide ports 342 are output respectively, and the 1-way branch RF signal a 20 Corresponding to interconnecting a power amplifier module 3, the branch RF signal a output by the power divider output waveguide port 34220 The signal is transmitted to the power amplifier module 3 and amplified by the power amplifier module 3 to a set power to become the branch RF signal a 21 , branch RF signal a 21 The two-way branch RF signal a of the power distribution and synthesis component 3 is transmitted from the power amplifier module 3 to the synthesis input waveguide port 352. 21 Then it is synthesized into a branch RF signal a by the power distribution and synthesis component 3 11 , n-way branch RF signal a 11 The main RF output signal is outputted by the radial combiner 4 to realize the output power amplified RF signal. n is the number of power splitter paths of the radial power divider 1 and the number of combined paths of the radial combiner 4, and the two are equal, and n is an integer greater than 1.

[0040] In the prior art, when it is necessary to synthesize a high-power RF signal of a certain frequency band, that is, when it is necessary to synthesize a main RF output signal with a relatively large output power, due to the technical bottleneck in the industry, the maximum output power of the monolithic power amplifier module 3 of the frequency band is limited, and it is necessary to use a multi-path power amplification synthesis method to complete the high-power synthesis, and each path corresponds to a power amplifier module 3. The number of paths is determined by the power value of the main RF output signal and the output power of the monolithic power amplifier module 3. Taking 16-way power amplification synthesis as an example, a 16-path power division and synthesis scheme is adopted, corresponding to 16 power amplifier modules, then a one-to-sixteen radial power divider and a sixteen-in-one radial synthesizer are required. The radial power divider needs to use 16 waveguides to connect to the input ports of the 16 power amplifier modules respectively, and the radial synthesizer needs to use 16 waveguides to connect to the output ports of the 16 power amplifier modules respectively. However, in the process of assembling several waveguides and radial power dividers 1, and several waveguides and radial synthesizers 4, the assembly errors at the connection points between the waveguide and the radial power divider 1, and between the waveguide and the radial synthesizer 4 will increase the signal transmission error. The radial power divider 1 and the radial synthesizer 4 have a total of 32 connection ports, and the error superposition phenomenon of all ports is relatively obvious. The possibility of a completely qualified assembly in one time is very small, and the assembly difficulty is great. Moreover, the number of paths of the radial power divider 1 and the radial synthesizer 4 is determined by the power amplification synthesis scheme, and the power amplification synthesis scheme is determined by the maximum output power of the power amplifier module 3. Therefore, the design and manufacture of the radial power divider 1 and the radial synthesizer 4 are carried out after the power amplification synthesis scheme is determined. However, the difficulty of the simulation design of the 16-path radial power divider 1 and the 16-path radial synthesizer 4 is also relatively large.

[0041] Compared with the prior art, under the premise of also using 16-way power amplification synthesis, the present technical solution sets a power distribution synthesis component 3 integrating power distribution and power synthesis, which can be used to divide the branch RF signal a output by the radial power divider 1. 10Perform a one-to-two secondary power division to form a branch RF signal a 20 , and to form 16 branch RF signals a 20 , radial power divider 1 only needs to output 8 branch RF signals a 10 That is, the radial power divider 1 and the synthesizer end only need to be provided with 8 connection ports each, for a total of 16 connection ports. Compared with the prior art, the connection ports between the waveguide and the radial power divider 1 and the radial synthesizer 4 are reduced, which also reduces the signal transmission error caused by the assembly error and reduces the assembly difficulty. Only 8 waveguides need to be provided in the radial power divider 1 and the radial synthesizer 4, which reduces the difficulty of the simulation design of the radial power divider and the synthesizer compared with the structure of 16 waveguides in the prior art. Moreover, since the number of waveguide paths in the radial power divider 1 and the radial synthesizer 4 is halved, the volume of the radial power divider 1 and the radial synthesizer 4 is reduced, which also reduces the overall volume of the special-shaped waveguide power distribution and synthesis device.

[0042] In some embodiments, the power distribution and synthesis component 3 includes a power division unit and a synthesis unit integrated into one. By integrating the power division unit and the synthesis unit into one, it is beneficial to reduce the overall volume of the shaped waveguide power distribution and synthesis device, reduce the space occupied in the entire device, and help reduce the size of the device. It should be noted that the power division unit and the synthesis unit can also be separated from each other, although this solution is not conducive to reducing the overall volume of the shaped waveguide power distribution and synthesis device, cannot reduce the space occupied in the entire device, and is not conducive to reducing the size of the device. However, this solution can achieve

[0043] It should be noted that the present invention can be used for the multi-channel waveguide radial synthesis scheme of the even-numbered power amplifier module. However, when the volume of the radial power divider 1 and the radial synthesizer 4 is small enough, the present invention is no longer applicable.

[0044] In some embodiments, the first T-shaped waveguide groove 343 and the second T-shaped waveguide groove 353 are both H-plane waveguide grooves. Since the power distribution and synthesis component 3 is a three-layer structure, and the depth of the H-plane waveguide groove is smaller than that of the E-plane waveguide groove, the use of the H-plane waveguide groove can reduce the overall volume of the power distribution and synthesis component 3.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A shaped waveguide power distribution and synthesis device, comprising a radial power divider (1), a radial synthesizer (4) and a plurality of power amplification modules (2), characterized in that: It also includes a plurality of power distribution and synthesis components (3), the power distribution and synthesis components including a power division part and a synthesis part integrated into one body, the input end of the power division part is connected to the output end of the radial power divider, and the power division part is configured with N output ends; The synthesizer is configured with N input terminals, the input terminal of each power amplification module is connected to an output terminal of the power division unit, and the output terminal of the power amplification module is connected to an input terminal of the synthesizer, and the output terminal of the synthesizer is connected to the input terminal of the radial synthesizer; N is an integer greater than 1; The power distribution and synthesis component (3) comprises an upper cover plate (31), a middle plate (32) and a lower base plate (33) which are stacked in sequence from top to bottom. The power distribution part is arranged between the middle plate (32) and the lower bottom plate (33); The synthesis portion is arranged between the upper cover plate (31) and the middle plate (32).

2. The shaped waveguide power distribution and synthesis device according to claim 1, characterized in that: The power distribution and synthesis component (3) is equipped with an H-plane waveguide for transmitting signals.

3. The shaped waveguide power distribution and synthesis device according to claim 1, characterized in that: The power division part comprises a first T-shaped air waveguide cavity and a power division input waveguide port (341) arranged on the lower base plate (33), and a pair of power division output waveguide ports (342) arranged on the lower base plate (33); the power division input waveguide port (341) and the pair of power division output waveguide ports (342) are respectively connected to the ends of the first T-shaped air waveguide cavity.

4. The shaped waveguide power distribution and synthesis device according to claim 3, characterized in that: The first T-shaped air waveguide cavity comprises a first T-shaped waveguide groove (343) arranged on the middle plate (32) and a surface of the lower bottom plate (33) used for covering the first T-shaped waveguide groove (343).

5. The shaped waveguide power distribution and synthesis device according to claim 1, characterized in that: The synthesis section comprises a second T-shaped air waveguide cavity and a synthesis output waveguide port (351) arranged on the lower base plate (33), and a pair of synthesis input waveguide ports (352) arranged on the lower base plate (33); the synthesis output waveguide port (351) and the pair of synthesis input waveguide ports (352) are respectively connected to the ends of the second T-shaped air waveguide cavity.

6. The shaped waveguide power distribution and synthesis device according to claim 5, characterized in that: The second T-shaped air waveguide cavity comprises a second T-shaped waveguide groove (353) arranged on the upper cover plate (31) and a surface of the middle plate (32) used for covering the second T-shaped waveguide groove (353).

7. The special-shaped waveguide power distribution and synthesis device according to claim 1, characterized in that a plurality of the power distribution and synthesis components (3) are evenly distributed around the radial power divider (1).

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